Transmitter Deviation - Motorola R2008C Operator's Manual

B. TRANSMITTER DEVIATION
1) Connect R2008C to transceiver unit via the junction box, as
in manual test mode
~onnection.(Refer
to Fig. 12.)
2) Select power monitor mode and execute the following manual
mode commands:
01 Suspend
09 Load synthesizer, enter desired channel
07 Carrier on
14 TX unmute
3) To check deviation, connect mod out jack to TX audio
connector on junction box. Set either 1KHz level or code
synth level using modulation display and observe deviation
on GEN/MOD display. Use Tone Memory display to vary fre-
quency of tone A or tone B to check deviation on frequencies
other than
1
kHz. Send manual mode command 13 TX mute to
mute transmitter audio for further tests.
4) Signalling tone deviation can be set by sending the manual
mode command 16, Signalling Tone On, to the transceiver unit.
Set deviation to 8 kHz measured on GEN/MON display. Manual
mode command 17, Signaling Tone Off, will deactivate the
transceiver signaling tone generator.
5) DTMF deviation can be set by executing manual mode command
42, DTMF On, and inputting desired digit such as 06. Adjust
the transceiver for approximately
8.5-9
kHz deviation
(roughly equal to
9
radians peak phase deviation).
6) SAT deviation can be set by executing manual mode command 32,
SATON, and entering 01. Set SAT deviation to 2kHz.
32
68-81069A70-0
DEXYTa