Table of Contents
Advertisement
CDM-710G High-Speed Satellite Modem
Introduction
1.5.2
Modulator
1.5.2.1
CDM-710G 70/140 MHz Modulator
Description
Frequency
Impedance
Connector
Return Loss
Output Power
Output Power Accuracy
Output Power Stability
Carrier Mute
Harmonics and Spurious
Integrated Phase Noise
Spectral Inversion
Quadrature Phase Error
Quadrature Amplitude Imbalance 0.2 dB maximum
Carrier Null
Combined Amplitude Imbalance
and Quadrature Phase Error
52 to 88 MHz or 104 to 176 MHz in 100Hz steps. Bandwidth of transmitted
spectrum is within IF frequency range.
75 Ω or 50 Ω, programmable
BNC Female
18 dB
0 to -20 dBm in 0.1 dB steps.
Carrier is not interrupted when changing between output power levels or
removing data connections.
± 0.5 dB at 25°C
Within ± 0.5 dB of 25C value over all specified environments
55 dB below main carrier output
-55 dBc/4 kHz over operating frequency range (excludes spectral mask area)
and is with a modulated carrier
-55 dBc/4 kHz 10 to 52 MHz, 176 to 250 MHz
Continuous component < 1 degrees RMS double-sided, 100 Hz to 10 MHz
Normal or Inverted
< 2°
35 dB below an unmodulated carrier
Single sideband test with suppressed sideband 35 dB minimum below
unmodulated carrier
1–15
Requirements
Revision 1
MN-CDM710G
Advertisement
Table of Contents
