2 environmental and physical – Comtech EF Data CDM-760 User Manual
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Introduction
Revision 2
CDM-760 Advanced High-Speed Trunking Modem
MN-CDM760
1–10
1.3 CDM-760 Specifications
1.3.1 System Specifications
Symbol/Date Rate Range
Programmable in 1 sps increments
DVB-S2
QPSK: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 to 150 Msps / 261.9 Mbps max
8-PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 to 120 Msps / 314.2 Mbps max
16-APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 to 90 Msps / 313.5 Mbps max
32-APSK: 3/4, 4/5, 5/6, 8/9, 9/10 to 72 Msps / 313.7 Mbps max
DVB-S2-EB1
QPSK: 1/2, 8/15, 17/30, 3/5, 19/30, 2/3,127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 150 Msps / 261.9
Mbps max
8-PSK: 17/30, 3/5, 19/30, 2/3, 127/180, 3/4, 5/6, 31/36, 8/9, 9/10 to 120 Msps / 314.2 Mbps max
16-APSK: 19/30, 2/3,127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 90 Msps / 313.5 Mbps max
32-APSK: 127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 72 Msps / 313.7 Mbps max
DVB-S2-EB1
QPSK: 1/2, 8/15, 17/30, 3/5, 19/30, 2/3,127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 150 Msps / 261.9
Mbps max
8-PSK: 17/30, 3/5, 19/30, 2/3, 127/180, 3/4, 5/6, 31/36, 8/9, 9/10 to 120 Msps / 314.2 Mbps max
16-APSK: 19/30, 2/3,127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 90 Msps / 313.5 Mbps max
32-APSK: 127/180, 3/4, 4/5, 5/6, 31/36, 8/9, 9/10 to 72 Msps / 313.7 Mbps max
64-APSK: 4/5, 5/6, 31/36, 8/9, 9/10 to 54 Msps / 281.9 Mbps max
FECFrame
Standard (64,800 bits) or Short (16,200 bits)
Pilots
On or Off
Alpha (Rolloff)
20%, 25% or 35% (in DVB-S2 mode)
5%, 10%, 15%, 20%, 25% or 35% (in DVB-S2-EBx mode)
Management
Front panel keypad / display EIA-232 /485, or 10/100/1000 BaseT with, SNMP, Telnet, HTTP
Firmware Update
Ethernet management port
Frequency Stability
Internal, stability ±0.06 ppm
Form C
Modulator, demodulator and Unit fault
Configuration Retention
Non-volatile memory; Returns upon power up
External Reference I/O
Reference Selections: Internal 10 MHz, External Input 1, 2, 5, 10 MHz at -6dBm to +10dBm (nominal
50/75Ω, BNC female connector)
Output Selection: (internal 10 MHz) at 2.7 volts peak-to-peak ± 0.4 volts, low impedance output
Tx and Rx IF and L-Band synthesizers phase lock to the reference.
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