Comtech EF Data IPSat GW1000 - Manual (Page 39)

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01-0945-401 Rev A 08/2004
Appendix A
Technical Specifications
General Specifications
Chassis 2RU rack-mountable in standard 19" rack. Approximately 15" deep
and 13” wide.
Power 90 to 265 VAC, 47 to 63 Hz
Integrated line filter
Internal supply will source up to 5W BUCs; external power supply
for larger BUCs available
Cooling Forced air; air inlet on side panels, exhaust on rear panel
At least 2 inches free air space on back and sides for air flow
required
Environmental 0 to 50 degrees C ambient, 5 to 95% RH, non-condensing
Vibration as normally encountered in stationary hub facility
Regulatory CE Mark approval pending, others upon request
Monitor & Control Available through, RS-232 console, TELNET, or optional Network
Management System
Demodulator Specifications
RF Input
50 to 2150 MHz
–20 to –65 dBm carrier power
–10 dBm maximum aggregate power
Symbol Rates 1.0 to 45.0 Msps
Data Rates 1.0 to 72.5 Mbps
Demodulation QPSK
DVB Forward Error
Correction Viterbi rate 1/2, 2/3, 3/4, 5/6, and 7/8 inner decoder
DVB-compliant deinterleaver
DVB Reed-Solomon rate 188/204 outer block decoder
DVB synchronous descrambler
Compliant with DVB-S standard, EN 300 421
DVB Mode BER Performance per EN 300 421
BERT
RS-422 electrical
Synchronous clock and data
1/8th aggregate data rate (less RS sync byte)
Modulator Specifications
RF Output 950 to 1750 MHz
RF Output Power +8 to –35 dBm carrier power adjustable in 0.1 dB steps
RF Step Size 1 kHz
Symbol Rates 19.2 Ksps to 2.048 Msps
Data Rates 9.6 Kbps to 2.048 Mbps
Modulation BPSK or QPSK
FEC Modes Intelsat mapped symbols per IESS 308; 1/2, 3/4, and 7/8 rate
DVB mapped symbols per EN300 421; 1/2, 3/4, and 7/8 rate
Radyne ComStream Sequential 1/2 and 3/4 rate
Scrambler V.35 asynchronous scrambler in Viterbi only
Differential Encoding Included in Viterbi and Sequential
Phase Noise Compatible with IESS 308
Spurious Compatible with IESS 308
BERT RS-422 electrical
Synchronous clock and data
1/8th aggregate data rate (less RS sync byte)