Receive 20 Khz-Band Tight Squelch Tuning - Motorola P100 Serie Servicehandbuch

Radio Programming and Tuning: Receiver Tuning
F1
F2
F3
F4
F5
5.7.5 Receive 20 kHz
1. Under the Alignment menu, select Rx Squelch, then select Squelch 20 kHz-band Tight.
(Figure 5-13. Rx 20 kHz-band Tight Squelch Tuning Window).
2. Apply a RF signal (with 1 kHz tone at 1.5 kHz deviation) for current frequency point with minimum
amplitude, -128 dBm (F1 being the first).
3. Set softpot to minimum (0) and adjust the amplitude of RF signal to the range of tight squelch
tuning (as shown in Table 5-5.) on the test equipment.
4. Adjust the softpot value by using either the Right arrow on the slider or Up arrow on the Working
Softpot box until the radio is totally muted.
5. Adjust the softpot value by using either the Left arrow on the slider or Down arrow on the Working
Softpot box until the radio is totally unmuted.
6. Repeat steps 2–5 for F2–F5.
7. Press Program to commit the softpot values into the codeplug.
Figure 5-12. Rx 20 kHz-band Normal Squelch Tuning Window
Band Tight Squelch Tuning
-
5-17