Pll Adjustment - Icom IC-F210 Service Manual

5-2 PLL ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
PLL LOCK 1 • Operating freq. : 400.000 MHz
VOLTAGE
• Receiving
2 • Output power
• Transmitting
3 • Operating freq. : 430.000 MHz
• Receiving
4 • Output power
• Transmitting
A: 400–430 MHz version for [F210], [F211]
LV
PLL lock voltage
check point
UNIT
A MAIN Connect a digital multi-
440.000 MHz B
: Low1
A
B
490.000 MHz
: Low1
B: 440–490 MHz version for [F210], [F211], [F221]
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
1.0 V MAIN C133
1.1 V C134
3.3–4.5 V Verify
3.3–4.5 V
C134
PLL lock voltage
adjustment for RX
C133
PLL lock voltage
adjustment for TX