Comtech EF Data C5 - Manual (Page 38)

Specifications C5/K1/K3 Integrated Satellite Terminal System
2–4 Rev. 0
2.1.2 C-Band Transmit Specifications
Refer to Table 2-3 for transmit specifications.
Table 2-3. C-Band Transmit Specification
Parameter Specifications
Frequency Range 5.925 to 6.425 GHz, in 100 Hz steps
Frequency Resolution 100 Hz
Maximum Power (P1db)
# +37 dBm, measured with a CW signal at ODU output connector
Power Range +25 to +38 dBm, measured with a CW signal at ODU output connector
Power Resolution 0.1 dB steps
Output S/N Ratio $ 50 dB
Power Accuracy
% 1.5 dB at +37 dBm
% 2.0 dB at +27 dBm
Power Flatness " 0.2 dB over any 1 MHz segment
Power Temperature Stability
% 0.75 dB maximum -40& to +55&C (-40& to +131&F)
Group Delay Variation " 25 ns, over any 2.5 MHz segment
3 rd IMD Intercept Point +44 dBm minimum measured with two carriers 17 dB below intercept
point at TX output with ALC ON measured with CW signal.
TX Frequency Drift/Temperature (IDU)
% 1 x 10 -8 from 0
& to +50&C (32& to 122&F)
Daily Frequency Stability % 1 x 10 -9 (at constant temperature)
Annual Reference Frequency Aging
' 5 x 10 -8 (front panel adjustment for lifetime aging)
TX Phase Noise
' -65 dBc/Hz at 100 Hz
' -70 dBc/Hz at 1 kHz
' -70 dBc/Hz at 10 kHz
' -75 dBc/Hz at 100 kHz
or < 2.8
& RMS SSB integrated 100 Hz to 1 MHz at # +27 dBm output
Undesired Sideband Suppression ' -30 dBc
Carrier Suppression ' -35 dBc
Spurious
' -15 dBm
Harmonics ' -20 dBc
RF OFF Level
' -30 dBm
C-Band Output VSWR
" 1.5:1, 50!, 5.925 to 6.425 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 bit/s steps
2.4 to 1250 kbit/s, in 1 bit/s steps
Modulator Output IF Shape EFD Closed
CSC Closed
FDC Closed
Modulation Coherent QPSK or BPSK
Forward Error Correction Viterbi K = 7 decoder, 1/2 3/4, and 7/8 rate
Optional: Sequential k = 36, 1/2, 3/4, and 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