Environmental And Physical; Base Unit Connectors; Test Functions; Modulator (Dual If) - Comtech EF Data CDM-760 Installation And Operation Manual

Introduction
CDM-760 Advanced High-Speed Trunking Modem

1.3.2 Environmental and Physical

Operating 0 to 50ºC (32 to 122ºF)
Temperature
Humidity
Power Supply
Input
Optional 48V DC 43-60 VDC
120 VAC @ 60 Hz 88W, 93 VA typical
Power
230 VAC @ 50 Hz 88W, 133 VA typical
Consumption
Optional 48 VDC 85W typical
Dimensions
Weight
AC Receptacles

1.3.3 Base Unit Connectors

Alarm Connector
Unit Management
Tx & Rx IF Connectors
L-Band Monitor
Traffic Data Interface

1.3.4 Test Functions

Data Test Pattern
CW
SSB Carrier
Loopback

1.3.5 Modulator (Dual IF)

70 / 140 MHz
Impedance / Connector
Output Power
Power Accuracy
L-Band
Impedance / Connector
Output Power
Power Accuracy
Storage -40 to 70ºC (-40 to 158ºF)
95% maximum, non-condensing
AC 100-240 VAC, 50/60 Hz
1.75 (1 RU) H x 19.0 W x 18.65 D inches (4.4 H x 48.3 W x 47.4 D cm)
15 lbs (6.8 kg)
Includes restraint for standard IEC-320 inlet
DB-15 male: Form C; Tx, Rx and unit faults; External Tx Carrier Off; IQ test point
DB-9 male with EIA-232 and RS 485 2W/4W
RJ-45 Ethernet (Maximum Ethernet packet size 10,240 bytes including Ethernet header & CRC)
70/140 MHz: BNC
L-Band: Type 'N' female
Type 'SMA female
2X RJ45 10/100/1000 BaseT Ethernet
1X Optical Gigabit Ethernet (optional)
Note: All Data GigE interfaces have a maximum Ethernet packet size of 1632 bytes including
Ethernet header & CRC
2^10-1, 2^15-1 and 2^23-1 compatible with BERT on applicable interfaces
Modulation disabled and CW signal is transmitted
Provides suppressed carrier and suppressed sideband
Full Duplex only
50 to 180 MHz in 100 Hz steps, maximum symbol rate is within IF limits
75 Ω / BNC Female. Return Loss ≥ 18 dB
0 to -25 dBm, 0.1 dB steps (70/140 MHz)
±0.5 dB of nominal at 25°C. Within ±0.5 dB from 25°C value at same frequency
950-2150 MHz in 100 Hz steps, modulator maximum symbol rate is within IF limits
50Ω, Type N Female. Return Loss ≥ 15 dB
-0 to -40 dBm, 0.1 dB steps
±0.5 dB of nominal at 25°C, ±0.5 dB from 25°C value at same frequency
1–10
Revision 4
MN-CDM760