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SDM-300L3 Satellite Modem
Front Panel Operation
Note: If only 4-Channel SYNC/ASYNC is enabled, only tributaries 1 to 4 will be
displayed.
FUNCTION SELECT: CONFIGURATION: MUX:
AGGREGATE DATA RATE
3.7 to 4001.3 kbps > 4001.3 or < 3.7 kbps, status only
The aggregate data rate is the sum of all tributary data rates plus the multiplex overhead
4.6.1.3
FUNCTION SELECT: CONFIGURATION: FLEX MUX
(OPTIONAL/CONDITIONAL)
IMPORTANT
Flex Mux is offered as a factory or field installed interface. Simultaneous operation of a
main data channel and three overhead channels are supported. The main data channel is a
G.703 type electrical interface at E1 (2048 kbps) or T1 (1544 kbps) terrestrial data rate
and supports both pass through and D&I modes of operation. AUPC, ASYNC data and
voice channels are supported in the three overhead channels.
Channel (Main Data) # 1: G.703, E1 or T1
Channel (Overhead) # 2: ADPCM (Audio)
Channel (Overhead) # 3: EIA-232, EIA-422, or AUPC
Channel (Overhead) # 4: EIA-232, EIA-485 or AUPC
The modulator and demodulator data rates are status only. Only the code rate can be
changed. The data rate displayed
programmed code rate, D&I overhead (16/15 if enabled) and Reed-Solomon overhead
(126/112 or 219/201 if enabled) must be included.
AGGREGATE DR
2305.3 Kbps
CONFIGURATION
FLEX MUX
Conditional:This menu is available only if the optional FLEX MUX
card is installed, and Modem Type = CUSTOM with Overhead Type =
FLEX MUX.
(if applicable) fixed overhead. When calculating the symbol rate based on the
includes data rates of all channels plus 1.3 kbps
4–53
Revision 1
MN/SDM300L3.IOM
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