Icom IC-400PRO - 5-2 PLL ADJUSTMENT

5 - 4
LV
PLL lock voltage
check point
C134
PLL lock voltage
adjustment for TX
C133
PLL lock voltage
adjustment for RX
DC power supply
13.8 V / 10 A
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
• Operating freq. : 450.000 MHz
• Receiving
• Output power : Low1
• Transmitting
• Operating freq. : 500.000 MHz
• Receiving
• Output power : Low1
• Transmitting
MAIN Connect a digital multi-
meter or an oscillo-
scope to the check
point, “LV”.
1.0 V
1.0 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