KVH Industries eTrac Satellite TV System User Manual


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Appendix A
System Specifications
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MeetsallInmarsatspecificationsfortheInmarsatmini-CNetworkforLand-mobileand
Maritimeterminals.(R&TTE)
TransmitFrequency 1626.5to1660.5MHznote1
ReceiveFrequency 1525.0to1559.0MHznote1
ChannelSpacing 5/2.5/1.25kHz
Modulation 1200symbols/secBPSK
AmbiguityResolution Uniqueword
Coding R
1
/2 K=7convolutionalcode(interleavedcode
symbolsRX)
DataRate 600bits/sec
RXFrameLength 8.64seconds
TXSignallingAccessMode SlottedALOHA
TXMessageChannel TDMA&FDMA,interleavedcodesymbols
TerminalInterface EIA/TIA-232-EDTEinterface.CCITTRec.V.24/28,
4800-115000baudIA-5code
I/OInterface SixdedicatedIn/Outpins
Opencollector.Sinks25mAeach
SystemSet-up S-RAMBatterybackup
DCPowerSource 10.5to32VfloatingDC
Maxlimit:100VA
Maxcurrent:4A
Maxpower:32W
RX:1.8W,TX:23W@12Vsupply
Fuse Self-recoveringPolyfuse
Temperature Operating:-31
ºFto131ºF(-35ºCto55ºC)
Storage:-40ºFto175ºF(-40ºCto80ºC)
Dimensions 6.4"(163mm)dia;5.75"(143mm)high
Weight 2.4lbs(1.1kg)
Note1.Inmarsatfrequencies:TX:1626.5-1646.5MHz;RX:1525-1545MHz
SystemSpecifications
A-134-0002Rev.D
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