TM 11-7025-221-10
1-15. TD-1337(V)3/G Interfaces.
EARTH SIDE
Supergroups. Multiplexer (mux) combines group inputs, dedicated user input (if used), 16 kb/s DVOW
input (if used), 2.4 kb/s DVOW input, and CESE telemetry into a single output SG. Output SG
rate is always the total of the following:
Sum of active group input rates
If used, 16 kb/s or 32 kb/s for dedicated user
If used, 16 kb/s for 16 kb/s DVOW
8 kb/s for overhead (includes 2 kb/s of CESE data and 2.4 kb/s DVOW)
Four demultiplexers (demux) provide for simultaneous demultiplexing of four separate and independent
received SG `s.
Group Inputs/Outputs, Connection points exist for 9 group inputs/outputs. From these, a maximum
of 8 may be selected for use (8 ports max available). The above chart defines which type(s)
of group inputs/outputs (formats) can be accommodated by each port. Listed below the chart are
the possible data rates for each format. As indicated by note 2, group data rates of 1024 and
1152 kb/s require the use of two ports.
Each received SG is demultiplexed (recombined) into its composite parts by a demux. Applicable
group data is then switched to its designated port for output to the group. Thus, inputs and outputs
for a given group use the same numbered port.
1-16
