Icom IC-F211 - PLL Adjustment

LV
PLL lock voltage
check point
C133
PLL lock voltage
adjustment for TX
C134
PLL lock voltage
adjustment for RX
DC power supply
13.2 V / 15 A
5 - 4
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
• Operating freq. : 400.000 MHz A
440.000 MHz B
• Receiving
• Output power : Low1
• Transmitting
• Operating freq. : 430.000 MHz
A
490.000 MHz B
• Receiving
• Output power : Low1
• Transmitting
MAIN Connect a digital multi-
meter or an oscillo-
scope to the check
point, “LV”.
1.0 V
1.1 V
3.3–4.5 V
3.3–4.5 V
MAIN C133
C134
Verify
ADJUSTMENT ADJUSTMENT CONDITIONS
UNIT LOCATION
VALUE
UNIT ADJUST
MEASUREMENT ADJUSTMENT
A: 400–430 MHz version for [F210], [F211] B: 440–490 MHz version for [F210], [F211], [F221]