5 - 3
L.V.
PLL lock voltage
check point
L38
Rx PLL lock voltage
adjustment
L43
Tx PLL lock voltage
adjustment
R376
Reference frequency
adjustment
5-3 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
PLL
REFERENCE
FREQUENCY
1
2
3
4
1
• Operating freq.
: 390.000 MHz
[L]
440.000 MHz
[M]
480.000 MHz
[H]
• Receiving
• Operating freq.
: 430.000 MHz
[L]
490.000 MHz
[M]
520.000 MHz
[H]
• Receiving
• Operating freq.
: 390.000 MHz
[L]
440.000 MHz
[M]
480.000 MHz
[H]
• Transmitting
• Operating freq.
: 430.000 MHz
[L]
490.000 MHz
[M]
520.000 MHz
[H]
• Transmitting
• Operating freq.
: 390.000 MHz
[L]
440.000 MHz
[M]
480.000 MHz
[H]
• Transmitting
MAIN
Rear
panel
Connect a digital multi-
meter or an oscillo-
scope to the check
point “LV”.
Loosely couple a fre-
quency counter to the
antenna connector.
2.0 V
7.0–13.0 V
2.0 V
7.0–13.0 V
390.0000 MHz [L]
440.0000 MHz [M]
480.0000 MHz [H]
MAIN
MAIN
L38
Verify
L43
Verify
R376
ADJUSTMENT
ADJUSTMENT CONDITIONS
UNIT
LOCATION
VALUE
UNIT
ADJUST
MEASUREMENT
ADJUSTMENT
• MAIN UNIT
[L]: [L-band (400–430 MHz)], [M]: [M-band (440–490 MHz)], [H]: [H-band (490–520 MHz)]
Содержание IC-F2610
Страница 1: ...UHF FM TRANSCEIVER iF2610 SERVICE MANUAL...
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