Icom IC-F41GT - Pll Adjustment

5 - 6
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
• Operating freq. : 400.000 MHz [L]
440.000 MHz [ML]
450.000 MHz [MH]
480.000 MHz [H]
• Receiving
• Transmitting
• Operating freq. : 430.000 MHz [L]
480.000 MHz [ML]
490.000 MHz [MH]
520.000 MHz [H]
• Receiving
• Transmitting
MAIN Connect a digital multi-
meter or an oscillo-
scope to the check
point, “CP7”.
1.3 V
1.3 V
2.5–4.0 V [L]
3.0–4.5 V other
3.0–4.5 V
MAIN C372
C373
Verify
ADJUSTMENT ADJUSTMENT CONDITIONS
UNIT LOCATION
VALUE
UNIT ADJUST
MEASUREMENT ADJUSTMENT
CP7 (LV)
PLL lock voltage
check point
C372
PLL lock voltage
adjustment for RX
C373
PLL lock voltage
adjustment for TX
• MAIN unit