Comtech EF Data SDM-300A User Manual
Page 323
SDM-300A Sattellite Modem
Revision 6
Flex Mux
MN/SDM300A.IOM
15–3
Table 15-1. System Specification
System Specification
Number of Channels
1 to 4, Each Channel is independently configurable.
User Channel #1
Drop and Insert
G.703 E1 with Nx64 kbps channels.
G.703T 1 with Nx64 kbps channels.
User Channel #2
ADPCM Audio Channel
32 kbps audio channel 600
Ω, balanced 4-wire.
User Channel #3
AUPC Channel
Automatic Uplink Power Control (AUPC) is included to provide remote output power
adjustment capability.
Note: AUPC can not be selected for Channels #3 and #4 simultaneously.
User Channel #3
Auxiliary Data Channel
EIA-422 SYNC/ASYNC with CTS flow control, 0.6 to 40000 kbps (in 100 bit steps).
EIA-232 SYNC/ASYNC with CTS flow control, 0.6 to 64 kbps (in 100 bit steps).
User Channel #4
AUPC Channel
AUPC is included to provide remote output power adjustment capability.
Note: AUPC can not be selected for Channels #3 and #4 simultaneously.
User Channel #4
Auxiliary Data Channel #2
EIA-485 ASYNC, 0.6 to 64 kbps (in 100 bit steps).
EIA-232 SYNC/ASYNC with CTS flow control, 0.6 to 64 kbps (in 100 bit steps).
Aggregate Data Rate
4.8 to 4001.3 kbps, the aggregate data rate is the sum of all tributary data rates plus the
multiplex overhead.
Multiplex Overhead
1.3 kbps.