Icom IC-703 - PLL Adjustments

4 - 2
4-2 PLL ADJUSTMENTS
REFERENCE
FREQUENCY
VCO1 LOCK
VOLTAGE
VCO2 LOCK
VOLTAGE
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
2
1
1
• Display frequency: Any
• Receiving
• Display frequency: 29.99999 MHz
• Mode : USB
• Receiving
• Display frequency
: 60.00000 MHz
• Mode : USB
• Receiving
MAIN
MAIN
MAIN
Connect an RF volt-
meter to check point
CP9611.
Connect a frequency
counter to check
point CP9671.
Connect a digital
multimeter or oscillo-
scope to check point
CP9151.
Connect a digital
multimeter or oscillo-
scope to check point
CP9151.
1.5–3.5 V
64.000000 MHz
4.0 V
4.0 V
MAIN
MAIN
MAIN
Verify
R9552
C9202
C9252