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Tait T801-4 Installation And Operation Manual

Manual is about: GPS Frequency Reference

Summary of T801-4

  • Page 1

    Tb8100 base station tb9100 base station t801-4 gps frequency reference installation and operation manual mba-00033-01 issue 1 september 2007.

  • Page 2

    2 t801-4 installation and operation manual © tait electronics limited september 2007 contact information tait radio communications corporate head office tait electronics limited p.O. Box 1645 christchurch new zealand for the address and telephone number of regional offices, refer to the taitworld we...

  • Page 3: Contents

    T801-4 installation and operation manual 3 © tait electronics limited september 2007 contents preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 scope of manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 4

    4 t801-4 installation and operation manual © tait electronics limited september 2007 4.2 t801-4 with internal gps receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 4.3 t801-4 with external gps receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4.4 t...

  • Page 5: List of Illustrations

    T801-4 installation and operation manual 5 © tait electronics limited september 2007 list of illustrations figure 1.1 high level block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 figure 1.2 mechanical assembly . . . . . . . . . . . . . . . . . . . . . ....

  • Page 6: Preface

    6 t801-4 installation and operation manual © tait electronics limited september 2007 preface scope of manual welcome to the t801-4 gps frequency reference installation and operation manual. This manual provides information on programming, installing and operating the t801-4. Also included in this ma...

  • Page 7: Associated Documentation

    T801-4 installation and operation manual 7 © tait electronics limited september 2007 associated documentation the following associated documentation is available for this product: ■ the dalman 40742 gps antenna/receiver manual is provided in pdf format on the product cd. ■ additional gps information...

  • Page 8: Publication Record

    8 t801-4 installation and operation manual © tait electronics limited september 2007 publication record ppm parts per million pps pulse per second qs 2 taitnet qs 2 simulcast system rmc recommended minimum specific gps/transit data nmea 0183 data message rsu remote site unit rtc radio technical comm...

  • Page 9: Description

    T801-4 installation and operation manual description 9 © tait electronics limited september 2007 1 description this chapter provides a brief functional and mechanical description of the t801-4 gps frequency reference. It also provides detailed information on the controls and connections on the front...

  • Page 10: 1.1

    10 description t801-4 installation and operation manual © tait electronics limited september 2007 1.1 functional description the t801-4 gps frequency reference is an essential frequency reference for all tb8100 and tb9100 base station products when they are used in simulcast applications (for exampl...

  • Page 11

    T801-4 installation and operation manual description 11 © tait electronics limited september 2007 figure 1.1 high level block diagram smb2 smb3 smb4 smb1 jp1 jp3 satsync 7 module 1 (standar d) con1 j1 smb2 smb3 smb4 smb1 jp1 jp3 satsync 7 module 2 (optional) fr ont p anel boar d 2 con1 j101 j100 j2 ...

  • Page 12: 1.2

    12 description t801-4 installation and operation manual © tait electronics limited september 2007 1.2 mechanical description 1.2.1 identifying the t801-4 you can identify the model and hardware configuration of a t801-4 by referring to the product code printed on a label on the rear panel. The produ...

  • Page 13

    T801-4 installation and operation manual description 13 © tait electronics limited september 2007 1.2.2 mechanical assembly the main components and modules of the t801-4 are identified in figure 1.2 below. Note that satsync 7 module 2 and its associated dc converter and front panel boards are option...

  • Page 14: 1.3

    14 description t801-4 installation and operation manual © tait electronics limited september 2007 1.3 connections and controls 1.3.1 front panel there are two front panels available, depending on whether one or two satsync 7 modules are fitted. Figure 1.3 identifies the controls and connections on a...

  • Page 15

    T801-4 installation and operation manual description 15 © tait electronics limited september 2007 gps led this led has two states: ■ green indicates that the received 1pps signal is valid (gps fix). ■ red indicates the received 1pps signal has failed or is invalid. Master oscillator led this led has...

  • Page 16

    16 description t801-4 installation and operation manual © tait electronics limited september 2007 1.3.2 rear panel figure 1.4 connections and controls on the rear panel b frequency reference outputs from satsync 7 module 1 i dc inputs c frequency reference outputs from satsync 7 module 2 j power led...

  • Page 17

    T801-4 installation and operation manual description 17 © tait electronics limited september 2007 frequency output 1 & 2 the frequency reference outputs are available on these bnc connectors. The t801-4 with one satsync 7 module has two output frequency channels, and the t801-4 with two satsync 7 mo...

  • Page 18

    18 description t801-4 installation and operation manual © tait electronics limited september 2007 i/o port this port is a 9-way male d-range connector. It provides connections for the following signals: ■ outputs for gps receiver and master oscillator alarms for both satsync 7 modules ■ inputs for t...

  • Page 19

    T801-4 installation and operation manual description 19 © tait electronics limited september 2007 pin signal name signal type logic notes 1 osc alrm osc1 output open collector; active = 0v; output low level oscillator alarm for satsync 7 module 1; maximum input voltage = 30v; maximum sink current = ...

  • Page 20

    20 description t801-4 installation and operation manual © tait electronics limited september 2007 port a - dalman gps this 15-way female d-range provides the rs-485 interface between the t801-4 and the dalman external gps receiver. This port provides connections for the following signals: ■ a regula...

  • Page 21

    T801-4 installation and operation manual description 21 © tait electronics limited september 2007 port b - rsu this rj45 connector provides the rs-485 interface to the qs 2 rsu (remote site unit). It is used as the input for the signal from the gps module in the rsu. It provides connections for the ...

  • Page 22

    22 description t801-4 installation and operation manual © tait electronics limited september 2007 dip switches the dip switches are used to change the configuration of the t801-4. Some switches are used in combination with other switches, and some are used only in certain system configurations (thes...

  • Page 23

    T801-4 installation and operation manual description 23 © tait electronics limited september 2007 dc inputs the dc input is not a floating input. The t801-4 is designed to accept an input voltage of 10.5vdc to 28vdc with negative ground. There are two sets of inputs, which are diode-isolated from ea...

  • Page 24

    24 description t801-4 installation and operation manual © tait electronics limited september 2007 power led this green led is lit when the internal dc supply is active (on). Gps selected led - port a this yellow led is lit when the external gps receiver on port a is selected. Gps selected led - int/...

  • Page 25

    T801-4 installation and operation manual description 25 © tait electronics limited september 2007 figure 1.5 connecting one 1pps ttl output to multiple tb9100 base stations the longest length of cable must be between the t801-4 and the first tb9100 use short lengths of cable between each tb9100 50 Ω...

  • Page 26: 1.4

    26 description t801-4 installation and operation manual © tait electronics limited september 2007 1.4 back-up battery a 3v lithium battery (type cr2032) provides back-up power for the optional internal gps receiver. The battery provides back-up power to keep the module’s ram alive and to power the r...

  • Page 27: Operation

    T801-4 installation and operation manual operation 27 © tait electronics limited september 2007 2 operation this chapter describes the basic operation of the t801-4. It provides information on the following topics: ■ applying power ■ what happens when power is lost ■ the use of utc pulses (1pps) as ...

  • Page 28: 2.1

    28 operation t801-4 installation and operation manual © tait electronics limited september 2007 2.1 system start-up and shutdown the t801-4 will start up as soon as dc power is applied. The associated gps receiver(s) should be powered from the same supply so that they start up and shut down at the s...

  • Page 29: 2.3

    T801-4 installation and operation manual operation 29 © tait electronics limited september 2007 2.3 oscillator control the t801-4 frequency generation system uses the utc pulses (1pps) derived from the gps as an accurate and stable reference source. The master oscillator (vco) uses the utc pulses fr...

  • Page 30: 2.5

    30 operation t801-4 installation and operation manual © tait electronics limited september 2007 2.5 invalid gps reference when the 1pps signal is considered invalid, the following two actions occur: ■ the gps led goes red (after the fault output delay period). The gps led will flash (green) during t...

  • Page 31: 2.7

    T801-4 installation and operation manual operation 31 © tait electronics limited september 2007 2.7 gps fix acquisition times the t801-4 is designed to operate with either an internal trimble lassen iq gps receiver or an external dalman 40742 gps antenna/receiver. Each receiver has different gps fix...

  • Page 32: 2.8

    32 operation t801-4 installation and operation manual © tait electronics limited september 2007 2.8 alarms all six t801-4 alarms are available on the i/o port on the rear panel. Four of these alarms are generated by the satsync 7 module. The alarms are described in the following table. Refer to “i/o...

  • Page 33: 2.9

    T801-4 installation and operation manual operation 33 © tait electronics limited september 2007 fault output delay activation of the alarm outputs generated by the satsync 7 module can be delayed by a programmable time period. The delay applies directly to the gps and osc alarms, but will also delay...

  • Page 34

    34 operation t801-4 installation and operation manual © tait electronics limited september 2007 signal from the gps receiver, even if invalid, will be presented on the output of the t801-4. In some cases, however, the gps alarms (via dip switches 3 and 4) have no control over the t801-4 1pps outputs...

  • Page 35: Programming

    T801-4 installation and operation manual programming 35 © tait electronics limited september 2007 3 programming this chapter describes how to configure and monitor the t801-4 using the et software. This software allows the user to program such things as: ■ output frequencies and levels ■ alarm outpu...

  • Page 36: 3.1

    36 programming t801-4 installation and operation manual © tait electronics limited september 2007 3.1 installing the software the et software is provided on the product cd supplied with the t801-4. 1. Insert the product cd into your cd-rom drive. 2. Locate the “eng_term” folder on the cd. 3. Copy th...

  • Page 37

    T801-4 installation and operation manual programming 37 © tait electronics limited september 2007 6. Select options > connect to re-open the connect dialog box. Click connect . If the et software connects successfully to the satsync 7 module, the following screen appears. The pps and osc leds are gr...

  • Page 38

    38 programming t801-4 installation and operation manual © tait electronics limited september 2007 output frequency the current setting of the channel frequencies. Status these leds are duplicates of the front panel leds: ■ pps shows the status of the 1pps validity. If the led is flashing, refer to “...

  • Page 39: 3.3

    T801-4 installation and operation manual programming 39 © tait electronics limited september 2007 3.3 setting up the satsync 7 module the setup form allows you to set the operating parameters of the satsync 7 module. To open the setup form, click setup on the monitoring screen. The information and f...

  • Page 40

    40 programming t801-4 installation and operation manual © tait electronics limited september 2007 crossing within 40 seconds. The main purpose of this facility is to synchronize ctcss transmissions within a synchronous broadcast system. It also has the effect of synchronizing the output frequency wi...

  • Page 41

    T801-4 installation and operation manual programming 41 © tait electronics limited september 2007 data log selecting the write to disk check box will cause the system to write a continuous stream of measurement results to a file on your et computer. The file name is “satsync.Csv” and it is placed in...

  • Page 42: 3.4

    42 programming t801-4 installation and operation manual © tait electronics limited september 2007 3.4 viewing the data log the data log screen displays the last 10 control measurements which resulted in the master oscillator control voltage being updated. To open the data log, click log on the monit...

  • Page 43

    T801-4 installation and operation manual programming 43 © tait electronics limited september 2007 dac a representation of the master oscillator control voltage. Example log 1 this screen shows how the control algorithm is changing the dac in order to reduce the error. The table can be read as follow...

  • Page 44: 3.5

    44 programming t801-4 installation and operation manual © tait electronics limited september 2007 if the system decides that the 1pps signal is invalid, the control process will hold the dac at the last known good setting. When the 1pps status returns to a valid state, the control process will start...

  • Page 45

    T801-4 installation and operation manual programming 45 © tait electronics limited september 2007 sv’s in view, sv’s used sv’s in view is the number of space vehicles theoretically in view if there were no obstructions. Sv’s used is the number of space vehicles actually being used for the gps fix. G...

  • Page 46: 3.6

    46 programming t801-4 installation and operation manual © tait electronics limited september 2007 3.6 upgrading the satsync 7 firmware the pc software required to upload firmware updates to the satsync 7 module(s) is provided on the t801-4 product cd in the “loader” folder. Note disconnect the et so...

  • Page 47

    T801-4 installation and operation manual programming 47 © tait electronics limited september 2007 7. Select options > connect to re-open the connect dialog box. Click connect . If the loader software connects successfully to the satsync 7 module, the following screen appears. 8. Click load to load t...

  • Page 48

    48 programming t801-4 installation and operation manual © tait electronics limited september 2007 9. Click start to start the upload to the satsync 7 module. The screen will then display the progress of the upload. 10. When the upload is complete, select options > disconnect to disconnect the loader...

  • Page 49: System Configuration

    T801-4 installation and operation manual system configuration 49 © tait electronics limited september 2007 4 system configuration the t801-4 can be configured in hardware by the dip switches on the rear panel, and by the links on the system interface board. Software configuration is carried out usin...

  • Page 50: 4.1

    50 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 4.1 setting the links on the system interface board the system interface board has several sets of links which can be used to configure the operation of the t801-4. These links can be left in t...

  • Page 51

    T801-4 installation and operation manual system configuration 51 © tait electronics limited september 2007 figure 4.1 location of links on the system interface board 1 w302 w301 w400 w401 w305 w303 w304 1 1 1.

  • Page 52: 4.2

    52 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 4.2 t801-4 with internal gps receiver this configuration uses a standard product, the t801-4x-8100, which is supplied with the trimble bullet iii active antenna (also available separately as ta...

  • Page 53

    T801-4 installation and operation manual system configuration 53 © tait electronics limited september 2007 dip switch settings set the dip switches on the rear panel as indicated in the following table. Some switches have optional settings, depending on the requirements of your particular system. Re...

  • Page 54

    54 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 when activated, this line can disable the 1pps outputs. Set dip switch 3 off if you want to disable the 1pps rs-485 output. Set dip switch 4 off if you want to disable the 1pps ttl output. The ...

  • Page 55: 4.3

    T801-4 installation and operation manual system configuration 55 © tait electronics limited september 2007 4.3 t801-4 with external gps receiver this configuration uses a standard product with no internal gps receiver, the t801-4x-8000. The external dalman 40742 gps antenna/receiver is available sep...

  • Page 56

    56 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 dip switch settings set the dip switches on the rear panel as indicated in the following table. Some switches have optional settings, depending on the requirements of your particular system. Re...

  • Page 57: 4.4

    T801-4 installation and operation manual system configuration 57 © tait electronics limited september 2007 4.4 t801-4 with internal and external gps receivers this configuration uses a standard product, the t801-4x-8100, which is supplied with the trimble bullet iii active antenna (also available se...

  • Page 58

    58 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 connection 1. Connect the trimble bullet iii gps antenna to the gps ant connector on the rear panel. Refer to “cabling” on page 79 for more information on connectors and appropriate types and l...

  • Page 59

    T801-4 installation and operation manual system configuration 59 © tait electronics limited september 2007 dip switch settings set the dip switches on the rear panel as indicated in the following table. Some switches have optional settings, depending on the requirements of your particular system. Re...

  • Page 60

    60 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 alarms and monitoring various t801-4 outputs can be monitored for notification that a failure or changeover event has occurred. Refer to “alarms” on page 32 for details of these outputs. Note w...

  • Page 61: 4.5

    T801-4 installation and operation manual system configuration 61 © tait electronics limited september 2007 4.5 t801-4 with a single qs 2 rsu receiver in this configuration the t801-4 would not normally be fitted with the internal or external gps receivers, as these are either disabled or redundant. ...

  • Page 62

    62 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 link settings there are no changes to the factory default settings. Programming program the satsync 7 module(s) as required for: ■ output frequencies ■ output levels ■ fault output delay. Note ...

  • Page 63

    T801-4 installation and operation manual system configuration 63 © tait electronics limited september 2007 dip switch settings set the dip switches on the rear panel as indicated in the following table. Some switches have optional settings, depending on the requirements of your particular system. Re...

  • Page 64

    64 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 alarms and monitoring if the 1pps pulse from the qs 2 rsu becomes invalid, the satsync 7 module will not activate its gps alarms and front panel gps leds. This is because the invalid input sign...

  • Page 65: 4.6

    T801-4 installation and operation manual system configuration 65 © tait electronics limited september 2007 4.6 t801-4 with dual qs 2 rsu receivers in this configuration the t801-4 would not normally be fitted with the internal or external gps receivers, as these are either disabled or redundant. The...

  • Page 66

    66 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 4.6.1 connection and configuration connection the t801-4 is connected to two 1pps rs-485 networks. One is driven from the primary qs 2 rsu, and the other from the secondary rsu. Note that the t...

  • Page 67

    T801-4 installation and operation manual system configuration 67 © tait electronics limited september 2007 link settings set the links on the system interface board as shown in the following table. The factory default positions are shown in bold text. Refer to “setting the links on the system interf...

  • Page 68

    68 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 dip switch settings set the dip switches on the rear panel as indicated in the following table. Some switches have optional settings, depending on the requirements of your particular system. Re...

  • Page 69

    T801-4 installation and operation manual system configuration 69 © tait electronics limited september 2007 setting dip switch 4 in this configuration, when the primary 1pps signal becomes invalid, an alarm is triggered on the t801-4 which causes a changeover to the standby 1pps signal. When setting ...

  • Page 70

    70 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 if both 1pps signals become invalid: ■ the satsync 7 module(s) will continue to use one of the 1pps signals as a reference for the frequency outputs. ■ the satsync 7 oscillator alarms (and fron...

  • Page 71

    T801-4 installation and operation manual system configuration 71 © tait electronics limited september 2007 monitoring other alarms although the satsync 7 gps alarms will not be activated if the 1pps signal(s) becomes invalid, we still recommend that you monitor one of the gps alarm outputs. This ala...

  • Page 72

    72 system configuration t801-4 installation and operation manual © tait electronics limited september 2007 system alarms when a system alarm has been received, indicating that the 1pps signal has become invalid, you should visit and examine the site or system. One or both of the rsu gps receivers ha...

  • Page 73: Installation

    T801-4 installation and operation manual installation 73 © tait electronics limited september 2007 5 installation this chapter describes how to install the t801-4 in a standard 19 inch rack or cabinet. It also provides some general information on safety precautions and site requirements. Important b...

  • Page 74: 5.1

    74 installation t801-4 installation and operation manual © tait electronics limited september 2007 5.1 personal safety 5.1.1 explosive environments warning!! Do not operate the equipment near electrical blasting caps or in an explosive atmosphere. Operating the equipment in these environments is a d...

  • Page 75: 5.2

    T801-4 installation and operation manual installation 75 © tait electronics limited september 2007 5.2 equipment safety 5.2.1 esd precautions important this equipment contains devices which are susceptible to damage from static charges. You must handle these devices carefully and according to the pr...

  • Page 76: 5.3

    76 installation t801-4 installation and operation manual © tait electronics limited september 2007 5.3 regulatory information refer to “specifications” on page 83 for more information on the compliance standards to which the t801-4 has been tested and approved. 5.3.1 fcc compliance this equipment ha...

  • Page 77: 5.4

    T801-4 installation and operation manual installation 77 © tait electronics limited september 2007 5.4 environmental conditions 5.4.1 operating temperature range the operating temperature range of the t801-4 is –30°c to +60°c (–22°f to +140°f) ambient temperature. Ambient temperature is defined as t...

  • Page 78: 5.6

    78 installation t801-4 installation and operation manual © tait electronics limited september 2007 5.6 recommended tools it is beyond the scope of this manual to list every tool that an installation technician should carry. However, the following tools are specifically required for installing the t8...

  • Page 79: 5.9

    T801-4 installation and operation manual installation 79 © tait electronics limited september 2007 5.9 cabling general we recommend that you try to route all cables to and from the t801-4 along the side of the cabinet so the cooling airflow required for any other equipment is not restricted. Cables ...

  • Page 80: 5.10

    80 installation t801-4 installation and operation manual © tait electronics limited september 2007 5.10 disposal of packaging if you do not need to keep the packaging, we recommend that you recycle it according to your local recycling methods. The foam cushions are cfc- and hcfc-free and may be burn...

  • Page 81: Accessories

    T801-4 installation and operation manual accessories 81 © tait electronics limited september 2007 6 accessories the table below lists the accessories supplied with, or available for, the t801-4 at the time this manual was published. Other items may become available at a later date. Consult your near...

  • Page 82

    82 accessories t801-4 installation and operation manual © tait electronics limited september 2007.

  • Page 83: Specifications

    T801-4 installation and operation manual specifications 83 © tait electronics limited september 2007 7 specifications this chapter provides general, performance and physical specifications for the t801-4 gps frequency reference module. The performance figures given in these specifications are minimu...

  • Page 84

    84 specifications t801-4 installation and operation manual © tait electronics limited september 2007 operational supply voltage operating voltage standard test voltage polarity polarity protection 10.5vdc to 28vdc 13.8vdc negative earth only diode supply current a t801-41-8000 with dalman external g...

  • Page 85

    T801-4 installation and operation manual specifications 85 © tait electronics limited september 2007 weight one satsync 7 module two satsync 7 modules 2.6kg (5.7lb) 2.9kg (6.4lb) physical (continued) frequency reference outputs impedance 50 Ω signal type sine wave, levels programmable from 185mvpp t...

  • Page 86

    86 specifications t801-4 installation and operation manual © tait electronics limited september 2007 1pps ttl outputs all measurements made with the 1pps ttl outputs connected to a 50 Ω load. Level 3.5v rise time 20ns propagation delay a trimble internal gps receiver dalman external gps receiver 54n...

  • Page 87

    T801-4 installation and operation manual 87 © tait electronics limited september 2007 tait general software licence agreement this legal document is an agreement between you (the “licensee”) and tait electronics limited (“tait”). By using any of the software or firmware items prior-installed in the ...

  • Page 88

    88 t801-4 installation and operation manual © tait electronics limited september 2007 limited warranty the software or firmware ( including open source components ) is supplied by tait and accepted by the licensee “ as is ” without warranty of any kind either expressed or implied , including but not...

  • Page 89

    T801-4 installation and operation manual 89 © tait electronics limited september 2007 directive 1999/5/ec declaration of conformity da dansk undertegnede tait electronics limited erklærer herved, at følgende udstyr t801-4 overholder de væsentlige krav og øvrige relevante krav i direktiv 1999/5/ef. S...

  • Page 90

    90 t801-4 installation and operation manual © tait electronics limited september 2007 chinese rohs compliance information 中国 rohs 符合性公布表 除了以下印刷电路板以外， t801-4 gps 频率参考全部符合中国 rohs 要求。 部件名称 ( 不符合项 ) 有毒有害物质或元素 lead (pb) mercury (hg) cadmium (cd) hexavalent chromium (cr (vi)) poly- brominated biphenyls (p...