Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
Summary of Specifications MN/CDM710.IOM
8.4 L-Band Modulator
Description Requirements
Frequency 950 to 1950 MHz in 100Hz steps. Bandwidth of transmitted spectrum is within IF
frequency range.
Impedance
50 Ω
Connector Type N Male
Return Loss 15 dB
Output Power -5 to -25 dBm in 0.1 dB steps.
Carrier is not interrupted when changing between output power levels or removing
data connections.
Output Power Accuracy
± 0.5 dB at 25°C
Output Power Stability
Within ± 0.5 dB of 25C value over all specified environments
Carrier Mute 55 dB below main carrier output
Harmonics and Spurious -55 dBc/4 kHz over operating frequency range (excludes spectral mask area) and
is with a modulated carrier
-55 dBc/4 kHz 250 to 950 MHz, 1950 to 2500 MHz
Integrated Phase Noise Continuous component < 1 degrees RMS double-sided, 100 Hz to 10 MHz
Spectral Inversion Normal or Inverted
Quadrature Phase Error
< 2°
Quadrature Amplitude
Imbalance
0.2 dB maximum
Carrier Null 35 dB below an unmodulated carrier
Combined Amplitude
Imbalance and
Quadrature Phase Error
Single sideband test with suppressed sideband 35 dB minimum below
unmodulated carrier
8–4