Comtech EF Data HPCST-5000 - Manual (Page 40)

Introduction High-Power TWTA Satellite Terminals
1-24 Rev. 1
Table 1-16. HPA-1200 Transmit Characteristics
Transmit Characteristics
TWT Rated Output Power 125W 350W
Rated Output Power at Flange
Gain (minimum):
small signal (SSG)
large signal (LSG)
Maximum SSG Variation
Any 80 MHz band
Full Band
Slope
Stability (24 hr.)
Stability, Temp
100W
42 dB min.
46 dB min.
1.0 dB max.
2.5 dB max.
0.04 dB/MHz max.
± 0.25 dB max.
± 1.0 dB max.
300W
47 dB min.
52 dB min.
1.0 dB max.
2.5 dB max.
0.04 dB/MHz max.
± 0.25 dB max.
± 1.0 dB max.
Intermodulation:
(with two equal signals)
-18 dBc max. with two equal carriers at 4 dB total output
backoff
Harmonic Output -60 dBc max.
AM to PM Conversion 2.5°/dB at 6 dB below rated power
Group Delay:
Linear
Parabolic
Ripple
(any 80 MHz)
0.02 ns/MHz
0.005 ns/MHz
2
≤ 1 ns p-p
Noise Power:
Transmit band
Receive band -80 dBW/4 kHz
-160 dBW/4 kHz -70 dBW/4 kHz
-150 dBW/4 kHz
Residual AM Noise -50 dBc to 10 kHz
-20 (1.5 + logf) dBc to 500 kHz
-85 dBc above 500 kHz
Phase Noise 10 dB below IESS phase noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc