Comtech EF Data CRS-200 - Manual (Page 59)

Rev. 1 A–1
A
Appendix A.
Summary Of Specifications
Type 1:N protection system, N=10 maximum, bridging architecture, C161 control
processor
Operating Modes Automatic switch to redundant modem (RM) based on modem alarms
Manual switch to RM
Manual parallel (bridging) of RM to any one of N traffic modems (TM)
Remove selected TMs from switch control
Programmable holdoff times for automatic switching (2-99 seconds)
Redundant Modem
Signal Source Any one of N traffic paths, both Transmit terrestrial data and Receive IF
(Parallel operation, or bridging)
IF Switching Passive splitting and combining using carrier muting of offline modem in a
single up/downconverter system. Operation with CRS-280 Transponder
Switch required for multiple up/downconverter system.
Switching Time Manual = 1 second if bridging selected TM, 6 seconds if not
Auto = 2 second if bridging selected TM, 7 seconds if not
Modem Interface 25-pin ‘D’ type male, requiring male-female pin-to-pin cable with all 25 pins
connected. All traffic, modem alarms and remote link with switch are
included on this interface.
Terrestrial Data
Interfaces EIA-422/EIA-530, V.35 or EIA-232 synchronous DCE
EIA-232 asynchronous DCE
X.21 synchronous DCE or DTE
(NOTE: Modem interface types connected to one switch may be mixed)
Front Panel Vacuum Fluorescent Display (2 lines, 24 characters each)
Tactile Keypad (6 keys)
Switch Status LEDs (Unit Fault, Remote ON/OFF, Stored Events)
Modem Status LEDs (Unit, Tx & Rx Faults, Bridged Status, Online)
Audible Alarm 2 tone buzzer, programmable to react to modem or switch faults
Power Supply 2 independent supplies
100-250 volts AC (+/- 10%)
Fused IEC connectors, 25 watts max total
Dimensions and
Weight 4U chassis x 275 mm deep, 18 lbs (8.2 kgs)
Compatible Modems CDM-500 (2.4 to 512 kbps, B/QPSK, Viterbi)
CDM-550 (2.4 to 2048 kbps, B/Q/OQPSK, Viterbi/Sequential w/RS)
CDM-550T (added Turbo Codec, AUPC and uncoded operation)