Pll Adjustment - Icom iF110 Service Manual

5-2 PLL ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
PLL LOCK 1 • Operating freq. : 174.000 MHz
VOLTAGE • Receiving
2 • Output power
• Transmitting
3 • Operating freq. : 136.000 MHz
• Receiving
4 • Output power
• Transmitting
LV
PLL lock voltage
check point
UNIT
MAIN Connect a digital multi-
: Low1
: Low1
5 - 4
MEASUREMENT
LOCATION
meter or an oscillo-
scope to the check
point, "LV".
DC power supply
13.2 V / 15 A
ADJUSTMENT
VALUE
UNIT ADJUST
3.2 V MAIN C134
3.6 V C133
0.9–1.5 V Verify
0.8–1.4 V
C134
PLL lock voltage
adjustment for RX
C133
PLL lock voltage
adjustment for TX