Icom IC-F521 Service Manual

5 - 4
5-2 PLL ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
ADJUSTMENT
UNIT LOCATION UNIT ADJUST
PLL LOCK
VOLTAGE
1 • Operating CH
• Receiving
: CH8 MAIN Connect a digital
multimeter or an oscil-
loscope to the check
point, "LV".
1.4 V MAIN C133
2 • Transmitting 1.0 V C134
3 • Operating CH
• Receiving
: CH6 3.5–4.5 V Verify
4 • Transmitting 3.0–4.0 V
LV
PLL lock voltage
check point
C134
PLL lock voltage
adjustment for TX
C133
PLL lock voltage
adjustment for RX
DC power supply
13.6 (13.2) V / 20 A

Icom IC-F521 Specifications

General

Brand	Icom
Model	IC-F521
Category	Transceiver
Language	English