Premier Mounts Modem CDM-600 Manual De Usuario
CDM-600 Satellite Modem
Revision 7
Open Network Operations
MN/CDM600.IOM
9–4
9.4 IDR
Primary Data Rates Supported
G.703
EIA-422 (Replaces 8K Overhead)
V.35 (Replaces 8K Overhead)
EIA-422 (Replaces 8K Overhead)
V.35 (Replaces 8K Overhead)
1544 kbps SD, RD
2048 kbps SD, RD
6312 kbps SD, RD
8448 kbps SD, RD
2048 kbps SD, RD
6312 kbps SD, RD
8448 kbps SD, RD
Engineering Service Channel
ESC Audio
2 duplex ADPCM channels
Audio Encoding
CCITT G.721
Audio Interface Type
600
Ω transformer-balanced 4-wire
Audio Input Level
Nominal Input : 0dBm0 (-3dBm, 600
Ω)
Adjustment range: -6 to +8 dB, 2 dB steps
Audio Output Level
Adjustment range: -6 to +8 dB, 2 dB steps
Audio Filtering
Internal 300 to 3400 Hz input and output
ESC Data Interface Type
EIA-422
ESC Data Rate
8 kbps, also 64 kbps if ADPCM audio is not used
ESC Data Circuits
Supported
Supported
SD, ST, RD, RT, Octet in, Octet out
Data Signal Phasing
Per EIA-449, data changes on the rising clock transition, is
sampled on the falling clock edge
sampled on the falling clock edge
Octet Timing
Octet high with every 8
th
bit, aligns with frame bit d8
Faults and Alarms
Backward Alarms
Supported
Supported
4 input, 4 output
Backward Alarm Inputs
1 k
Ω pull up to ground, set high to activate.
Backward Alarm Outputs
Form C Relay, N/O, N/C, Com