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2. RSSI (H) Sensitivity Adjustment
• Perform the adjustment at T1CH (26CH : 43.780MHz) as a rule.
Setting :
Procedure :
1
FM rf signal generator condition :
Carrier frequency
: 43.780MHz
Modulation frequency
: 20Hz (EXT)
Deviation
: AM 50%
Output level
: 2dB
µ
V (1.259
µ
V) (EMF)
2
Use the oscilloscope to confirm the FM rf signal generator in-
put (AF) signal waveform and RSSI signal, and use the RV101
so that they are synchronized matched (duty is synchronized).
RSSI WAVEFORM
RSSI output waveform
RF signal EXT
signal 20Hz
0V
Adjust so that they
synchronize at 0V.
C113
TP2
TP3
R117
C51
TP9
R506
IC501
[HAND MAIN BOARD]
(Component side)
RV101
[HAND MAIN BOARD]
(Conductor side)
TP2
TP3
FM rf signal
generator
AF oscillator
+
-
output : 20Hz
TP9
(TP3)
oscilloscope
