Comtech EF Data C5 - Manual (Page 50)

Specifications C5/K1/K3 Integrated Satellite Terminal System
2–16 Rev. 0
2.2.1 Ku-Band Transmit Specifications
Refer to Table 2-11 for Ku-Band transmit specifications.
Table 2-11. Ku-Band Transmit Specifications
Parameter Specification
Frequency Range 14.0 to 14.5 GHz
Frequency Resolution 100 Hz
Maximum Power (P1dB) # +30 dBm or # +35 dBm, measured with a CW signal
Power Range +17 to +30 dBm or +22 to +35 dBm, measured with a CW signal
Power Resolution 0.1 dB steps
Output S/N Ratio > 50 dB
Power Accuracy
% 1.5 dB at maximum power
% 2.0 dB at maximum power
Power Flatness
" 0.2 dB over any 1 MHz segment
Power Temperature Stability
% 0.75 dB, maximum –40& to +55&C (–40& to +127&F)
Group Delay Variation
" 25 ns p-p, over any 2.5 MHz segment
3 rd IMD Intercept Point +44 dBm minimum, measured with two carriers 17 dB below intercept point
at transmit output with ALC ON measured with CW signal
Transmit Frequency Drift/Temperature
% 1 x 10 -8 from 0
& to +50&C (32& to 122&F) (IDU)
Daily Frequency Stability
% 1 x 10 -9 (at constant temperature)
Annual Reference Frequency Aging < 5 x 10 -8 (front panel adjustment for lifetime aging)
Transmit Phase Noise < 3.0
& RMS SSB integrated 100 Hz to 1 MHz
Undesired Sideband Suppression < -30 dBc
Carrier Suppression < -35 dBc
Spurious < -13 dBm
Harmonics < -20 dBc
RF Off Level < - 30 dBm
Ku-Band Output VSWR " 1.5:1, 50!, 14.0 to 14.5 GHz
Symbol Rate Range (Variable) 4.8 to 2500 ks/s
Data Rate Range (Variable):
QPSK
BPSK 4.8 to 4375 kbit/s, in 1.0 bit/s steps
2.4 to 1250 kbit/s, in 1.0 bit/s steps
Modulator Output IF Shape EFD Closed, CSC Closed, FDC Closed
Modulation Coherent QPSK or BPSK
Forward Error Correction Viterbi K = 7, 1/2, 3/4, 7/8 rate
Optional: Sequential K = 36, 1/2, 3/4, 7/8 rate
Optional: Reed-Solomon IESS 308/309 Concatenated 225.205 T = 10
Scrambling CCITT V.35 IESS modified, CCITT V.35 (EFD/CSC). FDC, 2 15 -1 SYNC