Comtech EF Data CDM-IP 300L - Manual (Page 53)

CDM-IP 300L IP-Centric Satellite Modem Rev. 1
CD/CDMIP300L.IOM
25
Calibration Front panel programmable adjustment for aging.
Output Power Range 0 to -40 dBm in 0.1 dB steps
Output Power Accuracy ± 1.5 dB
Output Power Stability versus
Temperature ± 1.0 dB
Output Power Offset Adds offset of –99.0 to +99.0 dB in 0.1 dB steps to
displayed IF output power.
Output Impedance 50 Ω
Output Return Loss ≥ 14 dB
Output Noise Floor -130 dBc/Hz (20 MHz from carrier)
Output Phase Noise The phase noise of the TX IF output carrier is no worse
than:
dB/Hz Frequency Offset
-63.0 100 Hz
-73.0 1 kHz
-83.0 10 kHz
-93.0 100 kHz
Fundamental AC line spurious is -42 dBc or lower.
The sum of all the single sideband spurious, from 0 to
0.75 x symbol rate, is -42 dBc or lower.
Spurious Emissions -55 dBc, 55 to 2000 MHz in 4 kHz bandwidth
Modulator IF Output Spectrum Shape The modem meets the following TX output spectral
mask specifications. The desired mask is selectable
from the front panel or remotely.
INTELSAT/EUTELSAT
Closed net (CEFD and CSC)
Closed net (Fairchild compatible)
Closed net (SDM 51, SDM 52)
Carrier Suppression < -30 dBc (test mode)
Harmonics of modulated carrier < -55 dBc
Output Unit Reference:
Frequency
Stability
Power Level
Phase Noise On center conductor of L-Band output connector
10.0 MHz
± 0.02 ppm (Optional: 1.0 ppm)
0.0 dBm, ± 3 dBm
dB/Hz Frequency Offset
-50 1 Hz
-80 10 Hz
-110 100 Hz
-140 1 kHz
-150 10 kHz
-150 100 kHz