Service manual

Page 13
SVR-200 Service Manual
Figure 3
700/800/900 MHz Receiver
1. Receiver front end: Connect a DC voltmeter to TP1 on the SVR-200 main board. Set the service monitor
connected to the SVR-200 to the generate mode, receive frequency at .5μV RF output with a 1kHz tone and
60% deviation. Confirm a reading of 1VDC ±.2VDC at TP1.
2. Repeater squelch: Adjust the service monitor RF output for .5μV. Adjust RV9 on the SVR-200 main board
so the repeater COR LED is just on. Decrease the service monitor RF output to .25μV and ensure that the
repeater COR LED is off.
3. Transmit audio output: Adjust the service monitor RF output for 1mV. Turn the CTCSS modulation on and
set for 15% deviation. Confirm that the repeater COR, CTCSS and mobile PTT LED’s are on. Adjust RV3
on the SVR-200 main board for 60% deviation as read on the service monitor connected to the mobile radio.
4. Local Rx audio: Connect an 8 ohm speaker to P4 and set RV4 for the desired listening level. Turn off the
CTCSS modulation of the service monitor connected to the SVR-200. Confirm that the repeater CTCSS and
mobile PTT LED’s are off.
5. Lock Tone Decode: Change the 1kHz tone modulation to the lock tone frequency. Confirm that the PRI LED
goes off after approximately .5 seconds.
TP2