Comtech EF Data SNM-1001L - Manual (Page 318)

SNM-1001L Satellite Modem Revision 1
Burst Mode Modulator Operation MN/SNM1001L.OM
C–4
C.2.8 Phase Noise
1. The phase noise of the transmit IF output carrier is no worse than:
dBc/Hz Distance from Carrier
-66.0 100 Hz
-76.0 1 kHz
-86.0 10 kHz
-96.0 100 kHz
-96.0 1 MHz
2. Fundamental AC line spurious is -42 dBc or lower.
3. The sum of all the single sideband spurious, from 0 to 0.75 x symbol rate, is -42 dBc or
lower.
C.2.9 Transmit IF Output Switch
When set to off, no signal present at the output is greater than -60 dBm, measured in a 3 kHz
bandwidth from 0 to 500 MHz.
C.2.10 Transmit IF Power
The transmit IF power is operator selectable from -5 to -30 dBm, in 0.1 dB steps, with an
accuracy of
± 0.5 dB. The maximum drift due to temperature change over the specified range is
± 0.5 dB.
As an option the output can be selectable from +5 to -20 dBm, in 0.1 dB steps, with an accuracy
of
± 0.5 dB. The maximum drift due to temperature change over the specified range is ± 0.5 dB.
C.2.11 Modulator Power Offset
An offset to the displayed IF output power may be entered from -99.0 to +99.0 dB, in 0.1 dB
steps.
C.2.12 Modulated IF Output Shape
The modem meets the following transmit output spectral mask specifications. The desired mask
is selectable from the front panel or remotely.
• INTELSAT/EUTELSAT
• Closed net (Comtech EF Data)