Data And Miscellaneous Interfaces; Data Rate Ranges - Comtech EF Data CDM-570 Installation And Operation Manual

CDM-570/570L Satellite Modem with Optional IP Module
Introduction
1.4.4

Data and Miscellaneous Interfaces

Primary Data RS-422/EIA-530 DCE (Rates up to 10 Mbps)
(3 selectable modes) (also supports X.21 DCE & DTE)
V.35 DCE (Rates up to 10 Mbps)
Synchronous EIA-232 (Rates up to 300 kbps)
G.703 (Optional for units
1.544 Mbps T1 (Balanced 100Ω)
as of 10/2009)
2.048 Mbps E1 (unbalanced 75Ω or balanced 120Ω)
1, 2, 5, 10 or 20 MHz, -6dBm to +10dBm
External Reference In
(The Ext. ref. locks Tx and Rx synthesizers, and all baseband clock generation)
Modem Alarms Relay outputs (Tx, Rx & unit faults)
Demodulator I & Q test outputs (constellation)
Demodulator Rx Signal Level output (0 to 10 volts)
External carrier off input
1:1 Control Async serials link to other modem, and switching signals in 1:1 pair, via CRS-170A
Alarm Relay Type: Form C Contacts. Rating: 125V AC/30V DC, 0.3A AC/1A DC
Remote Control EIA-232 or EIA-485 modem control and monitoring
Ethernet 10/100 Base Tx for http, SNMP and Telnet interfaces
1.4.5

Data Rate Ranges

FEC Type Modulation
BPSK
None
QPSK/OQPSK
BPSK
Viterbi
QPSK/OQPSK
BPSK
QPSK/OQPSK
Viterbi + R-S
16-QAM
TCM + R-S 8-PSK
BPSK
QPSK/OQPSK
Turbo
8-PSK/8-QAM
16-QAM
Important Note: Where noted in the table above, if EDMAC framing is employed, the upper data rate will
be reduced by 5% for data rates up to 2.048 Mbps, and by 1.6% for data rates above 2.048 Mbps, where
EDMAC2 framing is used, or for Rate 21/44 BPSK/QPSK Turbo, or Rate 5/16 BPSK Turbo.
Code Rate Data Rate Range
Uncoded 4.8 kbps to 3.000 Mbps
Uncoded 9.6 kbps to 5.000 Mbps
Rate 1/2 2.4 kbps to 1.500 Mbps
Rate 1/2 4.8 kbps to 3.000 Mbps
Rate 3/4 7.2 kbps to 4.500 Mbps
Rate 7/8 8.4 kbps to 5.250 Mbps
Rate 1/2 2.4 kbps to 1.363 Mbps
Rate 1/2 4.3 kbps to 2.727 Mbps
Rate 3/4 6.5 kbps to 4.091 Mbps
Rate 7/8 7.5 kbps to 4.666 Mbps
Rate 3/4 13.0 kbps to 4.000 Mbps
Rate 7/8 16.8 kbps to 4.666 Mbps
Rate 2/3 8.7 kbps to 4.400 Mbps
Rate 5/16 2.4 kbps to 0.937 Mbps
Rate 21/44 2.4 kbps to 1.430 Mbps
Rate 21/44 4.8 kbps to 2.860 Mbps
Rate 3/4 7.2 kbps to 4.500 Mbps
Rate 7/8 8.4 kbps to 5.250 Mbps
Rate 0.95 9.1 kbps to 5.666 Mbps
Rate 3/4 10.8 kbps to 6.750 Mbps
Rate 7/8 13.6 kbps to 7.875 Mbps
Rate 0.95 15.3 kbps to 8.500 Mbps
Rate 3/4 14.4 kbps to 9.000 Mbps
Rate 7/8 16.8 kbps to 9.980 Mbps
1–16
Revision 12
MN/CDM570L.IOM
25-pin D-sub (female)
15-pin D-sub (female)
or BNC (female)
BNC (female)
15-pin D-sub (male)
9-pin D-sub (female)
15-pin D-sub (male)
9-pin D-sub (male)
RJ-45
EDMAC limited?
Yes – see note below
No