Comtech EF Data CDM-625 - Manual (Page 63)

CDM-625 Advanced Satellite Modem Revision 15
Introduction MN-CDM625
1–27
Modulation Code Rate
Spectral
Efficiency, bps/Hz
Typical Eb/No, for
BER=5 x 10 -8
Minimum Data
Rate,
ACM Mode
Maximum Data
Rate,
ACM Mode
BPSK 0.488 0.49 2.4 dB 18.1 kbps 2.00 Mbps
QPSK 0.533 1.07 2.2 dB 39.6 kbps 4.38 Mbps
QPSK 0.631 1.26 2.7 dB 46.7 kbps 5.16 Mbps
QPSK 0.706 1.41 3.4 dB 52.2 kbps 5.78 Mbps
QPSK 0.803 1.61 3.8 dB 59.6 kbps 6.60 Mbps
8-QAM 0.642 1.93 4.6 dB 71.5 kbps 7.91 Mbps
8-QAM 0.711 2.13 5.2 dB 78.8 kbps 8.73 Mbps
8-QAM 0.780 2.34 5.6 dB 86.6 kbps 9.59 Mbps
16-QAM 0.731 2.93 6.3 dB 108.5 kbps 12.01 Mbps
16-QAM 0.780 3.12 7.0 dB 115.5 kbps 12.79 Mbps
16-QAM 0.829 3.32 7.5 dB 122.8 kbps 13.61 Mbps
16-QAM 0.853 3.41 8.0 dB 126.2 kbps 14.00 Mbps
1.4.9 Miscellaneous
Front Panel
Tactile keypad, 6 keys (up, down, left, right, ENTER, CLEAR)
Vacuum Fluorescent Display (blue) – two lines @ 40 characters/line
Loopbacks Internal IF loopback, RF loopback, digital loopback, and inward/outward loopback
Fault Relays
Hardware fault, Rx and Tx Traffic Alarms, Open Network Backward Alarms
Type: Form C Contacts. Rating: Up to +/-50V, max. 0.5 Amp
M&C Interface EIA-232 and EIA-485 (addressable multidrop, 2-wire or 4-wire) or Ethernet (10/100 BaseT)
M&C Software Serial communications, SNMP, Telnet, Web Server (HTTP)
Firmware update Via Ethernet port. ftp protocol
Dimensions 1RU high, 17.65 inches (448 mm) deep
Weight 10.5 lbs (4.8 kg) max. (All option cards and 48V BUC supply installed)
AC Consumption
48W (typ. TPC/LDPC Codec and CnC module installed), 68W (max.)
280W (typ. TPC/LDPC Codec, CnC module, 48V BUC supply installed), 300W (max.)
AC Operating Voltage
100-240 VAC nom. – autosensing
90-264 VAC max.
DC Consumption (option) As per AC consumption
DC Operating Voltage
43-60 VDC nom.
36-60 VDC max.
Operating temperature 0-50ºC (32-122ºF)
1.4.10 Approvals
“CE” as follows:
EN 55022 Class B (Emissions)
EN 50082-1 (Immunity)
EN 60950-1 (Safety)
EN 61000-3-2
EN 61000-3-3
EN 61000-4-2
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-8
EN 61000-4-9
EN 61000-4-11
EN 61000-4-13
FCC Federal Communications Commission Federal Code of Regulation FCC Part 15, Subpart B.