Comtech EF Data CDM-760 - Environmental and Physical; Base Unit Connectors; Test Functions; Modulator (Dual IF)

Introduction Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
1–10
1.3.2 Environmental and Physical
Temperature
Operating 0 to 50ºC (32 to 122ºF)
Storage
-40 to 70ºC (-40 to 158ºF)
Humidity
95% maximum, non-condensing
Power Supply
Input
AC
100-240 VAC, 50/60 Hz
Optional 48V DC
43-60 VDC
Power
Consumption
120 VAC @ 60 Hz
88W, 93 VA typical
230 VAC @ 50 Hz
88W, 133 VA typical
Optional 48 VDC
85W typical
Dimensions 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)
Weight 15 lbs (6.8 kg)
AC Receptacles Includes restraint for standard IEC-320 inlet
1.3.3 Base Unit Connectors
Alarm Connector
DB-15 male: Form C; Tx, Rx and unit faults; External Tx Carrier Off; IQ test point
Unit Management
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)
Tx & Rx IF Connectors
70/140 MHz: BNC
L-Band: Type ‘N’ female
L-Band Monitor
Type ‘SMA female
Traffic Data Interface
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
1.3.4 Test Functions
Data Test Pattern 2^10-1, 2^15-1 and 2^23-1 compatible with BERT on applicable interfaces
CW Modulation disabled and CW signal is transmitted
SSB Carrier Provides suppressed carrier and suppressed sideband
Loopback Full Duplex only
1.3.5 Modulator (Dual IF)
70 / 140 MHz
Impedance / Connector
Output Power
Power Accuracy
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
L-Band
Impedance / Connector
Output Power
Power Accuracy
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