TIMTER™ Multi
-mode Dual
Telemetry Transmitter
104
Quasonix, Inc.
11.2 Transmitter Commands
The Dual transmitter, shown in Figure 56, enables several configurations including SOQPSK only, SOQPSK with
LDPC, SOQPSK with STC, and SOQPSK with LDPC and STC. In addition to establishing the correct connection(s)
to a receiver, proper configuration requires setting up the transmitter with a small number of commands.
Figure 56: Quasonix Dual Transmitter
When running STC on a Dual Transmitter, both channels must be set up identically.
To facilitate this, type the CH 3 command prior to the other commands to automatically set both channels to the
same parameters. The channels may be set up one at a time but CH 3 prevents duplication of work.
Table 20 shows the commands required to set up the four possible configurations.
Table 20: Dual Transmitter Input Commands for Channel 1 and Channel 2
SOQPSK
only
SOQPSK
+
LDPC
SOQPSK
+
STC
SOQPSK
+
STC
+
LDPC
CH 3
CH 3
CH 3
CH 3
MO 1
MO 1
MO 13*
MO 13*
LD 0
LD 1
LD 0
LD 1
*MO 13 sets the mode to STC.
When running SOQPSK or SOQPSK with LDPC, the frequency may be changed separately for Channel 1 and
Channel 2 by using the FR command on the appropriate channel.
