General description of model a3la-xm version 1.0 may 22, 2009 copyright © 2009 by nal research corporation the specifications in this document are subject to change at nal research‘s discretion. Nal research assumes no responsibility for any claims or damages arising out of the use of this document ...
Nal research corporation (tn2009-25-v1.0) 2 table of contents glossary ....................................................................................................................... 3 1.0 purpose ..................................................................................................
Nal research corporation (tn2009-25-v1.0) 3 glossary bis bureau of industry and security dav data after voice dod emss dod enhanced mobile satellite services dpl digital peripheral link dte data terminal equipment dsn defense switch network ear export administration regulations fdma frequency divisi...
Nal research corporation (tn2009-25-v1.0) 4 1.0 purpose this document describes the electrical and mechanical interfaces of the a3la-xm. Model a3la-xm is an iridium satellite modem comprised of a 9522b l-band transceiver (lbt) with an extended input voltage range. It is designed to transmit either a...
Nal research corporation (tn2009-25-v1.0) 5 2.2 rf specifications operating frequency: 1616 to 1626.5 mhz duplexing method: tdd multiplexing method: tdma/fdma link margin: 13.1 db average average power during a transmit slot (max): 7w average power during a frame (typical): 0.6w receiver sensitivity...
Nal research corporation (tn2009-25-v1.0) 6 2.7 reference documents a3la-xm product information getting started with model a3la-xm (tn2009-26-v1.0) at command reference for model a3la-xm (tn2009-27-v1.0) encryption module manual (tn2009-28-v3.0) current drawn by a3la-xm (tn2009-29-v1.0) current draw...
Nal research corporation (tn2009-25-v1.0) 7 3.1 rs232 data interface (standard 9-wire configuration) the a3la-xm supports a standard rs232 data interface to a dte incorporating hardware handshaking and flow control. The rs232 data interface comprises of eight standard rs232 data, control and status ...
Nal research corporation (tn2009-25-v1.0) 8 ‗/‘ position. A flathead screw driver can be used to turn the rotary switches to change from serial to usb and vice versa. A standard usb port 2.0 comprises of four pins as shown in table 1. When the rotary switches are set for usb, pin 9 of the multi-inte...
Nal research corporation (tn2009-25-v1.0) 9 level (i.E. Low) for at least 270 ms and released, the a3la-xm will alternate from its current on/off state. The current drawn on the external load used to pull the a3la-xm to gnd is no more than 0.5ma. The signal on pin 1 is considered gnd when it is at 0...
Nal research corporation (tn2009-25-v1.0) 10 4.0 antenna connector the a3la-xm modem uses a single tnc female 50-ohm connector for both transmit and receive. Cable loss between the modem and the antenna is critical and must be kept less than 2db at the operating frequency of 1616 to 1626.5 mhz. The ...
Nal research corporation (tn2009-25-v1.0) 11 2. Keep the antenna‘s vswr low—the higher the antenna vswr the higher the current consumed by the a3la-xm. 3. Keep the antenna cables‘ loss to less than 2db—the higher the antenna cable loss the higher the current consumed by the a3la-xm. 4. Keep the powe...
Nal research corporation (tn2009-25-v1.0) 12 phones) is used hold the sim in-place. An external sim card reader may also be interfaced as a peripheral to the a3la-xm via the dpl bus. A sim card in the external reader will take precedence over the sim chip in the integrated connector when both are pr...
Nal research corporation (tn2009-25-v1.0) 13 2. Security requirements for cryptographic modules, annex a: approved security functions for fips pub 140-2, us department of commerce, national institute of standards and technology, february 19 th , 2003. 9.0 self-monitoring to prevent modem lock-up the...
Nal research corporation (tn2009-25-v1.0) 14 as an option, the a3la-xm‘s bottom plate can be replaced with a bigger plate with the same mounting hole-pattern as the a3la-d. This allows the a3la-xm to be a ‗true‘ drop-in replacement for the a3la-d. Figure 4 of 4 in appendix e shows the dimension of t...
Nal research corporation (tn2009-25-v1.0) 15 appendix a: description of the iridium network a.1 description of the iridium network the iridium satellite network is owned and operated by iridium satellite llc (isllc). It was constructed as a constellation of 66 satellites in low-earth orbit, terrestr...
Nal research corporation (tn2009-25-v1.0) 16 although there are multiple gateways, a user is registered to a single gateway. The gateways perform call connection setup and administrative duties such as billing and resource management. The satellite constellation provides connectivity between users, ...
Nal research corporation (tn2009-25-v1.0) 17 a.3 dial-up data service dial-up data serviceprovides connectivity through the iridium satellite network to another iridium modem, to the public switch telephone network (pstn), to the defense switch network (dsn), to a remote lan (e.G., a corporate netwo...
Nal research corporation (tn2009-25-v1.0) 18 authentication and registration is completed allowing isu-to-isu communication without the gateway in the loop. A.4 direct internet connection the iridium direct internet service allows users to connect to the internet via the iridium gateway without havi...
Nal research corporation (tn2009-25-v1.0) 19 compression. The channel rate is still 2.4 kbps. However, 10 kbps effective throughput can be achieved depending on content (graphics and images will result in lower effective throughput). A.5 short-burst data (sbd) sbd is a simple and efficient bi-direct...
Nal research corporation (tn2009-25-v1.0) 20 a.8 iridium geo-location the iridium network makes calculations of the geographical location (geo-location) of an isu each time a call is placed. The technique employed to determine the geo-location of an isu is based on measurements of the isu and satell...
Nal research corporation (tn2009-25-v1.0) 21 appendix b: standards compliance the 9522b l-band transceiver is designed to comply with the standards for radio emissions compliance, electromagnetic compatibility, and ac safety in the united states, european union and canada assuming an antenna with a ...
Nal research corporation (tn2009-25-v1.0) 22 appendix c: export compliance information the a3la-xm is controlled by the export laws and regulations of the united states of america (u.S.). It is the policy of nal research to fully comply with all u.S. Export and economic sanction laws and regulations...
Nal research corporation (tn2009-25-v1.0) 23 appendix d: mil-std-810f certificate of compliance.
Nal research corporation (tn2009-25-v1.0) 24 iridi um nal res ea rc h co rp o ra tio n mod el : a3l a -x m power / serial / dpl sim appendix e: mechanical drawings.
Nal research corporation (tn2009-25-v1.0) 25 nal res earch c o rpo ra ti o n m o d el: a 3 l a -x m power / serial / dpl sim iridiu m.
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