Figure 9 Disabling The Transmitter - Motorola PDR 3500 Basic Service Manual

Press and hold
Station Control
1
Module Shift Button.
Press Vol Down/
2
Access Disable
9-20
Intcm/Acc D LED
3
should Flash yellow.
Exciter
Module

Figure 9 Disabling the Transmitter

Step 11. Measure the 12dB SINAD sensitivity and make a note
of the level. This level will serve as a baseline for the
receiver sensitivity. If 12 dB SINAD cannot be
achieved, suspect the following:
• Test configuration used does not match that shown
in Figure 8B.
• Excessive loss in the coaxial cables or coupler.
Step 12. Remove the cable connecting the coupler to the top
panel receive port. Connect the coupler to the
duplexer's antenna port. Connect the duplexer's
receive port to the station's top panel receive port, as
in normal station operation. (See Figure 8B.)
Step 13. Measure the 12 dB SINAD once again, and note the
result. The difference between this 12 dB SINAD level
and the level measured in Step 11 reflects the insertion
loss of the duplexer. The difference should be no
greater than approximately
• VHF: 1.3 dB
• UHF: 1.6 dB
If the difference is greater, suspect the following:
• Duplexer receive and transmit ports are reversed
• Loose or damaged cables between the duplexer
and the station
• Station receive frequency does not match the
duplexer receive frequency. Use a different
frequency or replace the duplexer. (Field tuning of
duplexers is not recommended.)
September 27, 2000
PA Full LED should
4
NOT illuminate.
MAEPF-27037-O
68P81093C75-O