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- Installation And Operation Manual
Radyne OM20 Installation And Operation Manual
Summary of OM20
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Om20 universal outdoor modem installation and operation manual tm116 revision 1.2 radyne corporation • 3138 e. Elwood st. • phoenix, az 85034 • (602) 437-9620 • fax: (602) 437-4811 • www.Radn.Com.
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Om20 universal outdoor modem warranty policy tm116 – rev. 1.2 iii warranty policy wp radyne corp. (seller) warrants the items manufactured and sold by radyne corp. To be free of defects in material and workmanship for a period of two (2) years from date of shipment radyne corp.’s obligation under it...
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Om20 universal outdoor modem warranty policy tm116 – rev. 1.2 iv in no event shall radyne corp. Be liable for incidental, consequential, special or resulting loss or damage of any kind howsoever caused. Radyne corp.’s liability for damages shall not exceed the payment, if any, received by radyne cor...
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Om20 universal outdoor modem preface tm116 – rev. 1.2 v preface p this manual provides installation and operation information for the radyne om20 (outdoor modem). This is a technical document intended for use by engineers, technicians, and operators responsible for the operation and maintenance of t...
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Om20 universal outdoor modem preface tm116 – rev. 1.2 vi trademarks product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. Copyright ©2008, radyne corporation. This manual is proprietary to radyne corp. And is inte...
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 vii table of contents toc section 1 - introduction ............................................................................................................. 1-1 1.0 overview .............................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 viii section 4 - om20 initial configuration ..................................................................................... 4-1 4.0 om20 hardware .......................................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 ix 4.12 standard ibs mode ...................................................................................................... 4-19 4.13 asynchronous multiplexer mode ......................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 x 6.1.3 led indicators............................................................................................................... 6-3 6.2 gui screen menus.................................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 xi 7.1.2.1.2 minor alarms ........................................................................................................... 7-6 7.1.2.1.3 common equipment faults....................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 xii a.0.6 sequential interface ......................................................................................................A-1 a.1 customized options................................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 xiii e.3.3 pcm-31 .........................................................................................................................E-3 e.3.4 pcm-31c ..................................................................................
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Om20 universal outdoor modem table of contents tm116 – rev. 1.2 xiv.
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Om20 universal outdoor modem introduction tm116 – rev. 1.2 1-1 introduction 1 this chapter provides an overview of the om20 outdoor modem. The om20 system can support a c-band with power levels of 2, 5 and 10 watts or ku-band with output powers of 2, 4 and 8 watts. Figure 1.1. Outdoor modem (om20) w...
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Om20 universal outdoor modem introduction tm116 – rev. 1.2 1-2 in addition, monitoring features provide verification of buc and lnb status. The om20 monitors both the current and the voltage at the output of the tx and rx ports, thus allowing the user to monitor the operating status of buc and lnb. ...
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Om20 universal outdoor modem introduction tm116 – rev. 1.2 1-3 1.1.1 features/options installed at time of order features installed at the time of ordering are the options pre-installed/initialized in the factory prior to shipment. Features and options can be reviewed from the gui or remote port of ...
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Om20 universal outdoor modem introduction tm116 – rev. 1.2 1-4.
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-1 installation 2 this document provides unpacking and installation instructions, and a description of external connections. 2.0 installation requirements the om20 is designed to be easily installed on antenna offset feed struts or king pos...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-2 the om20 contains a lithium battery . Danger of explosion exists if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance with local an...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-3 2.2 removal and assembly the standard om20 is shipped in a single box that contains mating connectors. Carefully unpack the unit and ensure that all of the above items are in the carton. The standard om20 power supply is designed for uni...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-4 figure 2.2a. Om 20 rear interconnects (cont) 2.3 mounting and wiring considerations the om20 should be mounted with the buc higher than the om20 with the interconnecting communication cabling and power cords at the lowest possible positi...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-5 2.3.1 om20 mounting bracket instructions mount the om20 to the desired location at the antenna using the supplied brackets. Each brackets has two threaded holes 3/8 x 16 as shown in figure 2-4 below. Figure 2.4. Om20 mounting brackets.
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-6 2.3.2 om20 general antenna post mount diagram the om20 and buc can be mounted vertically on the antenna king post. This is the preferred method of mounting on smaller diameter antenna systems where sufficient support of the feed boom arm...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-7 2.3.4 om20 antenna feed arm mount diagram the om20 can be mounted horizontally on the antenna feed arm. This is the preferred method of mounting on larger diameter antenna systems where sufficient support and weight handling characterist...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-8 2.3.6 om20 additional interface diagrams figure 2-9. Om20 eia-530 interface figure 2-10. Om20 g.703 interface 18p l n b omt ac pwr data / m& c interface eia -530 data / m &c i /o ifl indoor outdoor om- 20 j7 rx input j8 tx out ac pwr j1 ...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-9 figure 2-11. Om20 asi interface l n b omt ac pwr data / m& c interface m &c i /o eia -530 data / m &c i /o enet data / m &c i /o asi data tx asi data rx ifl indoor outdoor om- 20 j7 rx input j8 tx out ac pwr j1 j2 m&c i/o j3 data i/o j4 ...
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Om20 universal outdoor modem installation tm116 – rev. 1.2 2-10
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-1 om20 initial configuration 3 3.0 om20 initial configuration check the om20 is shipped from the factory with preset factory defaults. Upon initial power-up, a user check should be performed to verify the shipped modem config...
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-2 standard om20 factory default configuration settings modulator: data rate: 2.048 mbps mode: closed network satellite framing: none scrambler: v.35 (iess) drop and insert: disabled inner fec: 1/2 rate viterbi outer fec: disa...
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-3 3.1 initial configuration and setup process the following descriptions assume that the om20 is installed in a suitable location with prime ac power and supporting equipment available. Before initial power up of the om20, it...
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-4 resetting ip address & terminal to default/reset mode if the unit should lockup or lose communication during the initialization process, the unit remote interface can be reset using the supplied reset mating connector. By i...
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-5 dc voltage may be present on the output connector. 3.3 storage and reshipment it is recommended that the unit be stored or reshipped in its original sealed packing. The unit should be stored in a dry location where the temp...
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Om20 universal outdoor modem om20 initial configuration tm116 – rev. 1.2 3-6.
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-1 om20 theory of operation 4 4.0 om20 hardware the om20 outdoor modem is based on the dmd20 modem product platform that consists of a two printed circuit card (minimum configuration) design with additional optioned printed circuit c...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-2 4.0.1 om20 l-band printed circuit card the l-band printed circuit card consists of an analog modulation function, an analog complex downconversion, and two wide-band digital synthesizers. The block diagram of the l-band assembly i...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-3 4.0.2 om20 baseband processing printed circuit card the advent of million-plus gate count fpgas, advanced logic synthesis tools, and dsps providing hundreds of mips enabled the design of a software configurable modem. Large, fast ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-4 4.1 om20 functional block diagram figure 4-3 represents the om20 functional blocks. The modem is shown in a typical application with customer data, tx/rx rf equipment, and antenna i/o. Figure 4-3. Om20 outdoor modem functional blo...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-5 4.1.2 tx baseband processing the tx data and clock enters the baseband processor, passes through a rate adapting fifo, and enters the framer/drop processor. In closed-net mode, the data passes through the framer unaltered. In idr,...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-6 4.2 monitor & control (m&c) subsystem the modems m&c system is connected to most of the circuitry on any board contained in the modem. These connections provide status on the working condition of the circuitry as well as providing...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-7 4.2.1 terminal port this port supports an asynchronous control protocol as described in section 4. It is configured to support rs-232 signal levels. This port is intended for use in computer-based remote m&c. All functions of the ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-8 two form-c relays under processor control are available on the om20 connector j2 mod fault: de-energized when any transmit side fault is detected. Demod fault: de-energized when any receive side fault is detected. Two open collect...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-9 usage of the modems loopback capabilities in conjunction with the ethernet data interface can produce undesirable network loops. In order to run any type of data test with an ethernet interface you must utilize two modems connecte...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-10 figure 4-4. Loopback functional block diagram.
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-11 figure 4-5. Loopback functional block diagram figure 4-6. Loopback functional block diagram.
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-12 4.6 clocking options the modem supports a number of different clocking options that can be recovered from the satellite or the terrestrial links. The various clocking options allow users to determine which clock will best fit the...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-13 the following paragraphs define the types of clocking options available to the user at the front panel. Sct (internal oscillator) scte (external tx terrestrial clock) rx satellite clock 4.6.1.1 scte: serial clock transmit externa...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-14 the modem handles rx buffer clock selections based on source priority levels. The user assigns priorities to the clock sources based on source selections. Source 1 has the highest priority and source 5 being the last resort or lo...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-15 external reference port input is specified at 0 to +6 dbm. 4.7 rs422/v.35 interface j3 (standard option) data must be clocked into the modem by either the scte or sct source. If scte is selected as the tx clock source, then scte ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-16 when the signal is received and demodulated by the receiving modem, it is fed to a viterbi decoder for the first layer of error correction. After error correction is performed by the viterbi decoder, the unique words are located ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-17 768 1024 1536 (126, 112, 7) (126, 112, 7) (126, 112, 7) 0.125 0.125 0.125 4 4 4 10 8 5 idr (with 96 kbps o/h) 1544 2048 6312 8448 (225, 205,10) (219, 201, 9) (194, 178, 8) (194, 178, 8) 0.0976 0.0896 0.0899 0.0899 4 4 4 4 9 7 2 8...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-18 table 4-2. Kbps baud rate example for standard ibs kbps baud rate example for enhanced mode 128 64 9.6 300 256 128 19.2 600 384 192 32 600 512 256 64 1200 640 320 128 2400 768 384 192 4800 896 448 256 4800 1024 512 320 9600 1152 ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-19 1920 19200 1984 19200 2048 19200 4.12 standard ibs mode in the first or “normal” mode, all bit assignments are per the ibs standard. The bits of overhead housekeeping byte 32 are implemented as shown in table 4-3 below: table 4-3...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-20 the ibs async mode must be selected for true asynchronous channel operation to be available. 4.14 esc backward alarms when running in idr mode and if the modem has the esc option, there will be four backward alarms available for ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-21 4.14.1 to disable the esc backward alarms if the esc alarms port will not be used and the backward alarm indications are to be disabled, you must connect pins 10, 11, 22 and 23 to pin 1 (gnd) on esc alarms port. 4.15 satellite co...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-22 figure 4-10. 1 to 1 control ratio diagram the control ratio of the receiving units must match the control ratio of the transmitting unit. 4.15.2 aggregate data rate the aggregate data rate equals the following: user data rate + i...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-23 4.15.3 overhead rate comparison the scc overhead ratio varies depending on the user data rate, the in-band rate, and the control ratio. This gives scc the advantage of lower overhead rates when compared to ibs, which has a fixed ...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-24 example 1: user data rate: 1,024,000 bps in-band rate: 19,200 bps control ratio: 1 to 7 minimum in-band = (1,024,000 * 7)/((7 + 1) * 250) = 3,584 (less than in-band rate) slot bits = (1,024,000 * (7 * 10))/(19,200 * (7 + 1)) = 46...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-25 this allows the user to select the baud rate of the async port (j17) in scc mode. 7. Under tx async mode menu, set the desired es bits/char: es bits/char {7,8} this allows the user to choose between 7 or 8 bits of data. 8. Repeat...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-26 4.16 edmac satellite framing/deframing mode the modem supports edmac satellite framing. Edmac can be enables for both modulator and demodulator satellite framing when modem is configured in closed net applications. Edmac satellit...
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Om20 universal outdoor modem theory of operation tm116 – rev. 1.2 4-27.
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-1 rear panel interfaces 5 this section discusses the electrical interfaces available of the unit. 5.0 om20 external interface connections all om20 external connections are interconnected to labeled connectors located on the front ...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-2 figure 5-1. Om20 front panel ports figure 5-1a. Om20 rear panel ports.
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-3 5.0.1 power input 5.0.1.1 ac power input (j1) ac input is located on connector j1 of the om20. The auto-ranging universal power supply input allows for the connection of ac power to the port between the range of 100 – 240 vac an...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-4 the om20’s internal m&c system is connected to most of the circuitry on any board contained in the chassis. These connections provide status on the condition of the circuitry and provide the data required for the various measure...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-5 5.0.3 eia-530 synchronous data, es-es asynchronous overhead data, and g.703 balanced data i/o port (j3) this 38 pin d38999/24fd35pn connector contains the eia-530 data connections (rs- 422/v.35/rs-232, the es-es rs485 asynchrono...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-6 table 5.4.Cont. Eia-530 synchronous data i/o; es-es async data connector (j3) j3 pin no. Signal name signal direction eia-530 std. 25 pin connector reference 26 transmit data b (es-es) txd_b input n/c 27 transmit data a (es-es) ...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-7 for a system operating at a maximum temperature of 50°c, a total maximum cable length of 88 meters should be used (100m - (0.4 x (50-20))). Commercially available cat 5e cable should not be used due to cable elongation during if...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-8 5.0.11 led indicators there are two (2) light emitting diodes (led’s) on the front of the unit, power and alarm. Whenever proper ac power is supplied to the unit and the power supply is functioning normally, this led will be gre...
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Om20 universal outdoor modem rear panel interfaces tm116 – rev. 1.2 5-9.
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-1 web browser/remote protocol 6 6.0 web browser user interface the web browser interface for om20 can be accessed through the rj45, snmp port located on the unit. Instructions on how to configure the interface for this appli...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-2 6.1.1 appearance this site is a monitor and control of an individual complete satellite terminal. With a front panel look and feel, and an appearance that resembles the dmd20 layout, the product features a familiar look..
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-3 6.1.2 navigation the navigation scheme consists of gel tabs that correspond to the front panel top-level menu selections. When the mouse is dragged over a tab, it gets highlighted with a rollover effect and a sub-level of ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-4 6.1.3 led indicators twelve leds on the om20 gui interface (refer to table 6-2) indicate the status of the om20’s operation. The led colors maintain a consistent meaning. Green is appropriate for normal operation, yellow m...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-5 6.2 gui screen menus there are four main menus displayed on the introduction screen upon startup of the web browser. This screen will give a brief overview of the product and contains no configurable items. The four main m...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-6 6.2.1 introduction menu this menu will first appear when starting up the web browser. This page lists the general features of the unit, and lists a brief description of the unit. Notice on the bottom of the page that there...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-7 6.2.1.1 login screen upon initially accessing the password setup, ip administration and monitor & control configuration menu tabs a login prompt will appear. In order to gain access to any of the configuration menus, log i...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-8 6.2.2 password setup the access menu allows for multiple operators to be allowed access to the system. User access priorities can be set be completing the fields in the access menu below. Access menu figure 6-4. Access men...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-9 preferences menu figure 6-5. Modem preferences menu user confirmation: {disabled, enabled} the user confirmation preference allows the user to force/disable confirmation of all changes through the web interface. This does ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-10 6.2.3 ip and application administration the modem addressing menu provides instructions on how to configure the modem, applications and pc. Modem addressing figure 6-6. Modem addressing server boot mode: {default, non-vol...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-11 ip test: the ip test boot mode has a similar behavior to the default boot mode. The terminal, ip, snmp, ftp and web parameters changed by the default setting will also be reset by the ip test boot mode. However, instead o...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-12 configuring applications figure 6-7. Configuring applications snmp setup: snmp version: {v1 & 2, v3} default = v1 & v2 trap version: {v1 & 2} default = v1 authorization: {traps on, traps off} default = traps off read comm...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-13 snmp snmp version: v1 & v2 trap version: v1 authorization: traps off rd community: public rdwr community: public user 1 viewer-md5 user 2 viewer-sha user 3 oper-md5 user 4 oper-sha access group viewer access group viewer ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-14 terminal and remote port type vt100 baud rate 19200 interface rs232 remote control terminal table 6-8. Terminal and remote port parameters non-vol: stores and uses ip mask and addresses as provided by the user. Bootp: at ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-15 configuring the pc figure 6-8. Configuring the pc.
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-16 6.2.4 monitor and control menu under this menu, all modem functions that are monitored and/or controlled are accessible. To access the m&c sub menu options drag the cursor across the gel-tabs. Note that as the cursor pass...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-17 with the desired mode of operation or the mode will not be allowed. The following parameters are set and cannot be changed while the unit is in the given mode of operation: idr: (iess-308) for data rates 1.544, 2.048, 6.3...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-18 frequency (mhz): allows the user to enter the modulator if output frequency of the modem in 1 hz increments. Uplink frequency (mhz): displays the output frequency of the buc also referred to as satellite uplink frequency....
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-19 data menu figure 6-10. Data menu data rate (bps): {refer to technical specs for data rates} allows the user to set the data rate in bps steps. Symbol rate (sps): allows the user to view the symbol rate. Inner fec viterbi ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-20 differential coding: {enabled, disable} allows the user to enable or disable the differential encoder. Having the encoder enabled ensures proper phase lock. May not be adjustable in some modes. Scrambler selection: {none,...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-21 reed-solomon menu these selections are active only when the reed-solomon option is installed. Figure 6-11. Reed-solomon menu reed-solomon control: {enabled, disable} allows the user to enable/disable the reed-solomon enco...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-22 odu buc menu figure 6-12. Obu-buc menu lo frequency (mhz): allows the user to enter the local oscillator frequency of the buc lo in order for the uplink frequency to be displayed correctly (refer to the buc manufacturer’s...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-23 10 mhz buc reference: {enabled, disabled} allows the user to enable or disable the 10 mhz buc reference clock. Low alarm thrsh (volts) this menu allows the user to establish the lower voltage threshold limit of the buc. I...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-24 amplus: enables the fsk communication link for amplus bucs only. This feature enables the dmd20lbst to retrieve and display certain buc parameters on the front panel of the modem. Buc address {xxxx} allows the user to ent...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-25 aupc menu these selections are visible only when the aupc option is installed. Figure 6-13. Aupc menu local mode: the 'local aupc configuration' menu contains the local configuration parameters for the aupc function. Mode...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-26 nominal level. This nominal power should be set to a level high enough to re-establish communications regardless of rain fade. Nominal tx power {-20 to -45 db} this allows the user to set the nominal transmit power. The n...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-27 ef aupc: when configured for ef aupc, this setting is compared against the local received e b /n o and commands to the remote modem to increase or decrease transmit power. Nearside: when configured for nearside aupc, this...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-28 tx 2047 test {disable, enable} allows the user to enable or disable the transmit 2047 pattern test mode of the remote modem. Rx 2047 ber: reports the ber measurement of the receiver 2047 pattern test mode of the remote mo...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-30 for data rates framing type: 1/15 (ibs) descrambler type: iess-309 spectrum mask: intelsat ibs: (iess-309) for data rates framing type: 1/15 (ibs) descrambler type: iess-309 spectrum mask: intelsat drop & insert: data rat...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-31 spectrum: {normal, inverted} allows the user to invert the direction of rotation for psk demodulation. Normal meets iess specification. Spectral inversion may be required if the lnb lo is higher in frequency than the lnb ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-32 carrier input level limit: {-30 to 90 dbm} allows the user to adjust the low level threshold limit for input power. Input power level below the threshold limit will trigger a major alarm on the demodulator. Eb/no alarm th...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-33 comstream seq {3/4} dvb vit {1/2, 2/3, 3/4, 5/6, 7/8} dvb trellis {2/3, 5/6, 8/9} allows the user to select the rx code rate and type. Tpc interleaver {disabled, enabled} allows the user to disable or enable tpc interleav...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-34 scc inband rate {300 to 115200} note: only available (visible) when scc is selected for the rx satellite framing allows the user to request the rate of in-band data for the overhead channel. Async inband rate: {75, 150, 3...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-35 reed-solomon menu figure 6-16. Reed-solomon menu reedsolomon control: {enabled, disabled} allows the user to enable/disable the reed-solomon encoder. Rs n value: {refer to table 3-1 for valid n/k values} displays the curr...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-36 odu-lnb menu figure 6-17. Odu-lnb menu lo frequency (mhz): allows the user to enter the local oscillator frequency in mhz in order for the downlink frequency to be displayed correctly (refer to the lnb manufacturer’s spec...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-37 low alarm thrsh (amps) this menu allows the user to establish the lower current/amp threshold limit of the lnb. If current falls below this limit, an alarm will flash. High alarm thrsh (amps) this menu allows the user to ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-38 tx clock polarity: {auto, normal, inverted} allows the user to select the clock polarity for the tx terrestrial clock relative to the tx data. “auto” detects wrong polarity and automatically corrects. If g.703 interface i...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-39 es interface: {rs-232, rs-485} allows the user to select the interface type. Es baud rate: {150 – 1024} for ibs es to es {150 – 19200} for es to es enhanced {150 – 115200} for scc communications es to es : fixed baud rate...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-40 rx setup menu figure 6-19. Rx setup menu circuit id: provides entry of rx circuit identifier. Circuits can be given up to an 11 character alphanumeric identity such as dlink1 terrestrial streaming: {byte output, packet ou...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-41 buffer clock polarity: {normal, inverted} allows the user to select the buffer clock polarity for the tx terrestrial clock relative to the tx data. If g.703 interface is selected, this selection cannot be changed. Number ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-42 insert map the insert map displays the current programmed rx insert map for the modem. (refer to section 3.13, “drop and insert mapping” in this manual). Insert mode: {none, t1-d4, t1-esf, pcm-30, pcm-30c, pcm-31, pcm-31c...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-43 general menu figure 6-20. General menu external frequency (mhz): {variable through data rate} allows the user to select the external clock frequency in mhz. Reference frequency source: {internal, external, high-stability}...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-45 corrected ber: the cber display shows an estimated corrected bit error rate of the modem. Depending on the symbol rate the modem is running, the high-end performance scale of this display will vary (10 e -9 , 10 -10 or 10...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-46 monitor eth link status menu figure 6-22. Eth link status menu total packets: displays the total number of ethernet packets received from the satellite (only visible when ethernet is selected as the interface type). Error...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-47 the status of the following ports may be one of the following: down: the link is down. Unresolved: unable to agree on connection speed. 10 mbps half: connected at 10 base-t half duplex. 10 mbps full: connected at 10 base-...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-48 event menu figure 6-23. Event menu delete all: cleans the entire event buffer. Event type: i informational y yellow alarm. Indicates a transmit or receive warning condition . R red alarm. Indicates a transmit or receive f...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-49 6.2.4.5 alarms menu transmit menu figure 6-24. Transmit menu major alarms fpga config: {pass/fail, unmasked/masked} indicates a transmit fpga configuration failure. Dsp config: {pass/fail, unmasked/masked} indicates a tra...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-50 lb synth pll: {pass/fail, unmasked/masked} indicates that the tx l-band synthesizer is not locked. This alarm will flash on during certain modem parameter changes. A solid indication points toward a configuration problem ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-51 receive menu figure 6-25. Receive menu major alarms fpga config: {pass/fail, unmasked/masked} indicates a receive fpga hardware failure. Dsp config: {pass/fail, unmasked/masked} indicates a receive dsp failure. Signal loc...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-52 lb synth pll: {pass/fail, unmasked/masked} indicates that the rx l-band synthesizer is not locked. This alarm will flash on during certain modem parameter changes. A solid indication points toward a configuration problem ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-53 ifec lock: {pass/fail, unmasked/masked} indicates that the framing unit is unable to find the expected framing pattern. Ofec lock : {pass/fail, unmasked/masked} indicates that the reed-solomon decoder is not locked. Inter...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-54 common menu figure 6-26. Common menu common alarms terr fpga cfg: {pass/fail, unmasked/masked} indicates an interface card fpga configuration failure. Codec fpga cfg: {pass/fail, unmasked/masked} indicates turbo codec car...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-55 -1.5v tx supply {pass/fail, unmasked/masked} displays the measured voltage of the 1.5 volt tx power bus located inside the modem. +3.3v supply {pass/fail, unmasked/masked} displays the measured voltage of the +3.3 volt po...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-56 6.2.4.6 system menu terminal & remote menu figure 6-27. Terminal & remote menu remote port control {terminal, computer} terminal emulation: {vt-100, wyse50, vt100} allows the user to select the emulation type. Terminal ba...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-57 hw/fw configuration menu figure 6-28. Hw/fw configuration menu firmware revision: displays the installed firmware revision. M&c revision: displays the installed monitor and control revision. Main board: indicates the rady...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-58 features menu figure 6-29. Features menu the web browser menu allows viewing of actively enabled features. Each feature displays a series of symbols that describe feature status. The following symbols indicate: installed ...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-60 carrier type: {normal, cw, dual, offset pos fir, neg fir} restart test pattern: clicking this button resets the test pattern counter and generator..
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-61 6.3 configuring the om20 to use the ethernet data interface (optional) the om20 ethernet related menus are available and can be used to control the data interface as follows: under the interface menu: under the tx setup m...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-62 6.3.2 packet statistics the following statistics are available under the monitor menu when the ethernet data interface is selected: total packets: this counter displays the total number of ethernet packets received from t...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-63 link status: the following status is available under the monitor menu/link status sub-menu when the ethernet data interface is selected: port 1 status: displays the current status of lan port 1. Port 2 status: displays th...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-64 to be modified and pressing the terminal key of the option number. For example, to change the transmit data rate, enter ‘33’ at the terminal. The modem will respond by presenting the options available and requesting input...
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Om20 universal outdoor modem web browser/remote protocol tm116 – rev. 1.2 6-65.
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-1 maintenance and troubleshooting 7 this section discusses unit maintenance and troubleshooting for the om20 universal satellite modem. The om20 contains a lithium battery . Danger of explosion exists if the battery is i...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-2 7.1.1 alarm faults 7.1.1.1 major tx alarms alarm possible cause fpga cfg indicates a transmit fpga hardware failure. Dsp cfg indicates a transmit fpga failure. Sct clock pll indicates that the tx sct clock pll is not l...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-3 7.1.1.2 major rx alarms alarm possible cause fpga cfg indicates a receive fpga hardware failure. Dsp cfg indicates a receive dsp failure. Signal lock indicates that the demod is unable to lock to a signal. Frame lock i...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-4 7.1.1.4 minor rx alarms alarm possible cause buff underflow indicates that a doppler buffer underflow has occurred. Buff near empty indicates that the doppler buffer is about to underflow. Buff near full indicates that...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-5 7.1.1.5 drop and insert alarms alarm possible cause multiframe lock the insert framer is not in sync. Crc lock an insert crc fault occurred. Valid in t1-esf, pcm-30, or pcm- 30c modes. T1 signaling an insert t1 yellow ...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-6 7.1.2 alarm masks the om20 performs a high degree of self-monitoring and fault isolation. The alarms for these faults are separated into the following three categories: active alarms common equipment alarms backward al...
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Om20 universal outdoor modem maintenance and troubleshooting tm116 – rev. 1.2 7-7.
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-1 technical specifications 8 8.0 data rates – (refer to section 8.11) 8.1 modulator modulation bpsk, qpsk, and oqpsk (8psk, 16qam optional) l-band tuning range 950 to 2050 mhz in 1 hz steps impedance 50-ohm connector n-type fem...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-2 8.2 demodulator demodulation bpsk, qpsk, and oqpsk (8psk, 16qam optional) l-band tuning range 950 to 2050 mhz in 1 hz steps impedance 50-ohm connector n-type female return loss 10 db minimum spectrum intelsat iess 308/309/310...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-3 8.6 terrestrial interfaces a variety of standard interfaces are available for the om20 modem in stand-alone applications. 8.7 idr/esc interface (optional) g.703 t1 (dsx1) 1.544 mbps, 100-ohm balanced, ami and b8zs g.703 e2 8....
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-4 qpsk seq 3/4 7200 2048000 qpsk seq 7/8 8400 2048000 qpsk tpc 1/2 4582 9545454 qpsk tpc 3/4 7200 15000000 qpsk tpc 7/8 8400 17500000 oqpsk none 9600 20000000 oqpsk vit 1/2 4800 10000000 oqpsk vit 3/4 7200 15000000 oqpsk vit 7/...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-5 8.11.2 dvb 187 mode modulation code rate min data rate max data rate bpsk vit 1/2 2400 4583333 bpsk vit 2/3 2934 6111111 bpsk vit 3/4 3300 6875000 bpsk vit 5/6 3667 7638888 bpsk vit 7/8 3850 8020833 qpsk vit 1/2 4400 9166666 ...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-6 204 mode modulation code rate min data rate max data rate bpsk vit 1/2 2400 5000000 bpsk vit 2/3 3200 6666666 bpsk vit 3/4 3600 7500000 bpsk vit 5/6 4000 8333333 bpsk vit 7/8 4200 8750000 qpsk vit 1/2 4800 10000000 qpsk vit 2...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-7 8.12 om20 / ber specifications 8.12.1 ber performance (viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber viterbi decoder specification 1/2 rate specification 3/4 rate specifica...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-8 8.12.2 ber performance (sequential) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber sequential decoder specification 1/2 rate specification 3/4 rate specification 7/8 rate typical per...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-9 8.12.3 ber performance (viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber viterbi decoder reed solomon specification 1/2 rate specification 3/4 rate typical p...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-10 8.12.4 ber performance (8psk trellis) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber trellis decoder specification 2/3 rate specification 2/3 rate w/rs typical performance 8psk unco...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-11 8.12.5 ber performance (16qam viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db ber viterbi decoder specification 3/4 rate specification 7/8 rate typical performance 16qa...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-12 8.12.6 ber performance (16qam viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db ber viterbi decoder - reed solomon specification 3/4 rate w/rs specifica...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-13 8.12.7 ber performance ((o)qpsk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber turbo decoder specification turbo 1/2 specification turbo 3/4 typical performance b/o/qpsk unco...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-14 8.12.8 ber performance (8psk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db ber turbo decoder specification turbo 3/4 typical performance 8psk uncoded theory specification turbo ...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-15 8.12.9 ber performance (16qam turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db ber turbo decoder specification turbo 3/4 typical performance 16qam uncoded theory specifica...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-16 1/2 rate 3/4 rate 7/8 rate 1/2 rate 3/4 rate 7/8 rate 1e-3 4.2 db 5.3 db 6.2 db 3.9 db 4.9 db 5.8 db 1e-4 4.8 db 6.1 db 7.1 db 4.5 db 5.6 db 6.5 db 1e-5 5.5 db 6.8 db 7.9 db 5.1 db 6.3 db 7.2 db 1e-6 6.1 db 7.6 db 8.6 db 5.7...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-17 2/3 rate 2/3 rate w/rs 2/3 rate 2/3 rate w/rs 1e-3 6.2 db 5.2 db 4.8 db 4.9 db 1e-4 7 db 5.5 db 5.6 db 5.1 db 1e-5 7.8 db 5.8 db 6.4 db 5.4 db 1e-6 8.7 db 6.2 db 7.2 db 5.6 db 1e-7 9.5 db 6.5 db 8.1 db 5.8 db 1e-8 10.2 db 6....
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-18 turbo 1/2 turbo 3/4 turbo 7/8 turbo 1/2 turbo 3/4 turbo 7/8 1e-3 tbd 3.2 db 4 db tbd 2.8 db 3.7 db 1e-4 tbd 3.4 db 4.1 db tbd 3 db 3.8 db 1e-5 2.7 db 3.6 db 4.2 db 2.4 db 3.2 db 3.9 db 1e-6 2.9 db 3.8 db 4.3 db 2.6 db 3.4 db...
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-19 8.12.10 input level refer to figure 8-10 for the om20 power threshold limits. Figure 8-10 demodulator input level specification.
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Om20 universal outdoor modem technical specifications tm116 – rev. 1.0 8-20
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Om20 universal outdoor modem appendix a tm116 – rev. 1.2 a-1 product options a a.0 hardware options the following enhanced interface cards are available. All options must be factory installed. A.0.1 g.703/idr esc interface the om20 can be equipped with a g.703/idr esc interface. Factory installed op...
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Om20 universal outdoor modem appendix a tm116 – rev. 1.2 a-2 a.1 customized options the om20 may be customized for specific customer requirements. Most modifications or customization can be accomplished by means of firmware/software modifications. The following are examples of the types of customiza...
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Om20 universal outdoor modem appendix a tm116 – rev. 1.2 a-3.
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 1 software upgrade procedure b the outdoor modem software may be upgraded via the terminal or the web interface. B.0 terminal software upgrade the om20 outdoor modem offers the ability to perform field upgrades of the modem’s feature set qu...
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 2 if the code entered is correct, the display will display code accepted, otherwise the display will display invalid code. Care should be taken to insure that the upgrade code is entered properly. After three unsuccessful attempts to enter ...
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 3 the value displayed on the top line of this menu is the 12-digit unit id. It is displayed as 3 sets of 4 digits in a dot-delineated format as follows: 1 2 3 4 . 1 2 3 4 . 1 2 3 4 your radyne sales representative will ask you for this numb...
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 4 b.5 web browser software upgrade b.6 monitor and control all modem settings can be monitored and controlled through the browser based on the user access rights. The goal is an easy-to-use navigation scheme that would enable users to view ...
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 5 the web browser menu allows viewing of actively enabled features. Each feature displays a series of symbols that describe feature status. The following symbols indicate: installed no hardware available. Requires hardware for upgrade. Feat...
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Om20 universal outdoor modem appendix b tm116 – rev. 1.2 b- 6.
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Om20 universal outdoor modem appendix c tm116 – rev. 1.2 c- 1 carrier control c c.0 states the om20 transmitter will turn off the carrier output automatically when the modem determines there is a major alarm. This is done to prevent the carrier from outputting an unknown spectrum and possibly distur...
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Om20 universal outdoor modem appendix c tm116 – rev. 1.2 c- 2 c.5 carrier rts modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel, and the user is required to enter “yes” to re-enable output after the change. When using t...
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Om20 universal outdoor modem appendix c tm116 – rev. 1.2 c- 3.
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 1 quick start guide d d.0 introduction this section provides quick setup instructions to access the web browser through the rj45 ethernet interface. The web user interface allows for complete monitoring and control of all modem parameters a...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 2 6. In order for the computer to recognize the modem, the computers subnet mask must match the subnet mask of the modem. The ip address mask is 255.255.255.000. To ensure the safety of the network, it may be necessary to contact the networ...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 3 figure 3. Web browser - modem introduction page 11. To navigate other parts of the site, the modem needs to know who the user is. Upon selecting any of the commands, the modem will request an authentication from the user. This authenticat...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 4 the modem offers addition features that allow for specific administrative privileges for various users. Please refer to section 3.3 for additional information. This concludes the initial set up that will allow the user full access to the ...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 5 figure 5. Modem addressing screen d.3.2 configuring the computer this section is a continuation from the initial setup or can be used on an existing system that requires a network setup change. The computer needs to be configured with the...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 6 d.4 web users setup and configurations controls options we use authentication and authorization together with a user database and a security realm to design a secure site. This makes use of users and groups, where users are generally peop...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 7 figure 6. User settings/access screen access rights represent the following: guest: users are able to navigate most of the site, and view modem parameter settings. Oper: users can monitor and control modem parameter settings, and change t...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 8 d.4.2 boot mode options (reference only) boot modes selections are based on the networks requirements needed for setting up the web browser. Refer to the manual for more specific details. Boot mode options are: default: during initializat...
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Om20 universal outdoor modem appendix d tm116 – rev. 1.2 d- 9.
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 1 drop and insert (d&i) e e.0 drop and insert (d&i) (for efficient drop & insert refer to appendix f) the radyne om20 drop and insert (d&i) function provides an interface between a full t1 or e1 trunk whose framing is specified in ccitt g.7...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 2 sd (ddi) om20 modem terrestrial trunk figure 3-9. Drop only e.2 insert only when insert is enabled and drop is disabled, the om20 performs an insert-only function. If framed terrestrial e1 or t1 data is available, it should be input via t...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 3 e.3 mode selection the om20 d&i can be easily configured to support several commonly used terrestrial data formats. For e1 data, the user can choose between pcm-30, pcm-30c, pcm-31 and pcm-31c. For t1 data, the user can choose between t1-...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 4 8, 10, 12, 15, 16, 20, 24, or 30. In the dmd20, robbed bit signaling (rbs) is handled without any need for operator intervention and is transparent to the user. E.3.6 t1-esf/t1-esf-s the t1-esf mode of operation supports a t1 interface wi...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 5 sd (ddi ) ddo idi rd (ido ) om20 modem terrestrial t 1 trunk tx rx sd ( ddi ) ddo idi rd ( ido ) dmd 20 modem terrestrial t 1 trunk tx rx idi rd ( ido ) dmd 20 modem tx rx idi rd ( ido ) dmd 20 modem tx rx sd (ddi ) ddo idi rd (ido ) om20...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 6 assigning time slots: example : for a modem w/ drop & insert enabled at a data rate of 256kb (with timeslots assigned 1 - 1, 2 - 2, etc.). At a data rate of 256kb, the modem will allow 4 channels to assign timeslots (nx64kb). Under the in...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 7 it is not mandatory to assign timeslots in sequential order, although the lowest timeslot must be entered in the lowest channel. For example: timeslots may be assigned 1 - 2, 2 - 5, etc. But not 1 - 5, 2 - 2. E.6 configuring the om20 for ...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 8 n = 6, data rate = 384000 n = 8, data rate = 512000 n = 10, data rate = 640000 n = 12, data rate = 768000 n = 15, data rate = 960000 n = 16, data rate = 1024000 n = 20, data rate = 1280000 n = 24, data rate = 1536000 n = 30, data rate = 1...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 9 e.6.2 operational network specification the network specification of the modem often determines which additional menus and displays are available for use by the operator. The d&i mode-specific menus will not be displayed unless the networ...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 10 therefore, the insert terrestrial frame source selection should be made prior to attempting to change the buffer clock. In most instances, the insert terrestrial frame source selection will be set to external and the buffer clock will au...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 11 use satch ts edit capability to define proper mapping of satellite channels to insert terrestrial slots use map copy to copy rx edit to rx active under demodulator: under demod if: set frequency to desired value example 2: multidestinati...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 12 e.7 d&i maps and map editing the drop and insert multiplexer is programmed by loading it with a transmit and receive map. Maps always contain 30 entries, although, only the first “n” entries are relevant (see table 4-10). The om20 includ...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 13 table e-2. D&i rom maps rom map t1/e1 time slot # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 ...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 14 the following paragraphs give examples of typical configurations that could use the rom maps as templates. The rom map used would have to be first copied to the appropriate active transmit (drop) and/or active receive (insert) map(s) bef...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 15 rom map 6 could be used as the template for an active transmit (drop) and/or active receive (insert) map with a modulator and/or demodulator configured for 768 kbps operation. The t1 or e1 data in the transmit path or the demodulated dat...
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Om20 universal outdoor modem appendix e tm116 – rev. 1.2 e- 16.
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 1 efficient drop & insert f f.0 introduction the following paragraphs describe the menu structure and procedure for configuring a radyne om20 modem for efficient drop & insert mode. F.1 prerequisite in order for a modem to be configured for...
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 2 f.2 efficient drop & insert mode with efficient drop & insert, the terrestrial interface selections, terrestrial framing modes, terrestrial to satellite mapping, es to es channel, satellite and terrestrial backward alarm functionality, an...
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 3 f.2.1 calculating the required satellite bandwidth in order to calculate the satellite bandwidth (i.E. The symbol rate), we must first calculate the efficient d&i rate (i.E. The data rate plus the overhead required for efficient drop & in...
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 4 summary and examples: the following examples further illustrate how to calculate the efficient d&i rate which can be summarized for n timeslots as: efficient d&i rate = data rate + (n * 250 bps) with e1 signaling add n * 2000 bps with enh...
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 5 example 2b: change to e1-pcm30 framing (e1 signaling), standard es to es overhead add 10 * 2000 bps to our previous calculation gives 662500 bps still saving over 20,000 bps compared to the open network standard. Example 2c: change to enh...
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Om20 universal outdoor modem appendix f tm116 – rev. 1.2 f- 6.
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -1 strap codes g g.0 strap codes the strap code is a quick set key that sets many of the modem parameters. For quick setup of the modem, strap codes are very helpful. When a strap code is entered, the modem is automatically configured for th...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -2 24 56 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 33 56 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 34 64 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 36 64 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 40 128 1 1/2 vit none v.35 (iess) dis ...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -3 76 3264 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 81 3264 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 88 512 16/15 3/4 vit ibs ibs dis dis qpsk ibs 97 1024 1 1/2 vit cnt v.35 (iess) dis dis qpsk cnt 98 1024 1 3/4 vit cnt v.35 (iess) dis...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -4 54 1280 16/15 1/2 vit ibs ibs dis dis qpsk cnt 57 1280 16/15 3/4 vit ibs ibs dis dis qpsk cnt 58 1344 16/15 1/2 vit ibs ibs dis dis qpsk cnt 67 1408 16/15 1/2 vit ibs ibs dis dis qpsk cnt 71 1408 16/15 3/4 vit ibs ibs dis dis qpsk cnt 75 ...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -5 g.1 sample applications the following section provides brief application notes for operating the modem and explains by example how to configure the modem for some of the most popular configurations. The following information illustrates t...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -6 set mode to idr under mod data menu: set code rate to 3/4 vit set data rate for 8448000 under mod if menu: set desired tx frequency and power level turn if on method 2 - under interface menu: set interface type set tx clock selection set ...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -7 method 2 - under interface menu: set interface type set tx clock selection set mod strap code to: 120 under mod if menu: set desired tx frequency and power level turn if on demodulator: method 1 - under interface menu: set interface type ...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -8 set mod strap code to: 101 under mod if menu: set desired tx frequency and power level turn if on demodulator: method 1 - under interface menu: set interface type set buff clock selection set buffer size set mode to: closed net under demo...
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Om20 universal outdoor modem appendix g tm116 – rev. 1.2 g -9.
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Om20 universal outdoor modem appendix h tm116 – rev. 1.2 h- 1 aupc operation h h.0 automatic uplink power control (aupc operation) the modem has an optional built-in provision for automatic uplink power control, aupc. Aupc is useful when operating power levels are affected by environmental changes i...
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Om20 universal outdoor modem appendix h tm116 – rev. 1.2 h- 2 h.0.2 ef aupc in ef aupc mode, the target e b /n o indicates the local unit wants the remote unit to maintain a power level sufficient to provide the local e b /n o value. Ef aupc can be set to operate on either or both directions of a li...
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Om20 universal outdoor modem appendix h tm116 – rev. 1.2 h- 3 the aupc menu functions and their descriptions are shown on table h-1 ands h-2. Table h-1. Local aupc functions function aupc available options description aupc mode disable, nearside, radyne, efdata enables/disables the aupc to function ...
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Om20 universal outdoor modem appendix h tm116 – rev. 1.2 h- 4.
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-1 glossary i a a ampere ac alternating current adc analog to digital converter agc automatic gain control ais alarm indication system. A signal comprised of all binary 1s. Amsl above mean sea level ansi american national standards institute as...
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-2 c c celsius cats computer aided test software ca/xxxx cable assembly cd-rom compact disk – read only memory clk clock cm centimeter com common cpu central processing unit crc cyclic redundancy check. A system of error checking performed at t...
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-3 f f fahrenheit fas frame acquisition sync. A repeating series bits, which allow acquisition of a frame. Fcc federal communications commission fec forward error correction fifo first in, first out fpga field programmable gate arrays fw firmwa...
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-4 k kbps kilobits per second kbps kilobytes per second kg kiloton khz kilohertz ksps kilosymbols per second l lcd liquid crystal display led light emitting diode lo local oscillator m ma milliampere mbps megabits per second mfas multi-frame ac...
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-5 q qam quadrature amplitude modulation qpsk quadrature phase shift keying r om random access memory rf radio frequency rom read only memory rms root mean square ru rack unit. 1 ru = 1.75”/4.45 cm rx receive (receiver) rxd receive data r-s ree...
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Om20 universal outdoor modem glossary tm116 – rev. 1.2 i-6 w x y z w watt misc. µs microsecond 16qam 16 quadrature amplitude modulation 8psk 8 phase shift keying.