Environmental And Physical; Modulator; 70/140 Mhz) Modulator; Cdm-710 (70/140 Mhz) Modulator - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710 Broadcast Satellite Modem
Introduction
1.4.1

Environmental and Physical

Description
Operating
Temperature
Storage
Operating
Humidity
Storage
AC
Power Supply Input
DC
AC
Fuse
DC
Power Consumption
AC Power Cord Retainer
Modular design
Dimensional Envelope, 1RU
Weight
Keypad
Front Panel
Operational Display
Features
LEDs
1.4.2

Modulator

1.4.2.1

CDM-710 (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
0 to 50ºC (32 to 122ºF)
-20 to 70ºC (-4 to 158ºF)
95% maximum, non-condensing
99% maximum, non-condensing
100-240V AC 50/60Hz, auto-ranging
-48 VDC
T2.00A 5x20 mm 250VAC time lag
T6.25A, 6.3x32mm (3AG), 250VAC time lag
< 75 W, 55W typical
Standard
Simplex or Duplex
1.72H x 19.00W x 18.65D inches
(4.37H x 48.26W x 47.37D cm)
15lbs (6.8 kg)
Up, down, left, right, Clear, and Enter keys
24-characters/line x 2 lines Vacuum Fluorescent Display (VFD)
8 status LEDs
52 to 88 MHz or 104 to 176 MHz in 100 Hz steps. Bandwidth of transmitted
spectrum is within IF frequency range.
75Ω or 50Ω, 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
Requirements
Revision 11
MN/CDM710.IOM