Frequency Adjustment - Icom IC-F4210D Service Manual

6-2 FREQUENCY ADJUSTMENTS
1) Select an adjustment item using [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
PLL LOCK 1 • Channel
VOLTAGE • Receiving
(RX)
(TX) 2 • Channel
• Transmitting
(RX) 3 • Channel
[Verify] • Receiving
(TX) 4 • Channel
[Verify] • Transmitting
NOTE: Only when the lock voltage is not in the specifi ed range, perform following adjustments.
(RX) 5 • Channel
• Receiving
(TX) 6 • Channel
• Transmitting
REFERENCE 1 • Channel
FREQUENCY • Transmitting
*; [Low band] versions.
**; [High band] versions.
(The values shown above are an example only. Each transceiver has own values.)
CONDITION
: 1-1 1) Connect an RF power meter to the an-
tenna connector.
2) Set the adjustment value on the "Adjust
Utility" screen.
: 1-2
: 1-3 • Click the [Update (F5)] button to check on
the "I/O Check window" as below.
: 1-4
: 1-3 1) Connect an RF power meter to the an-
tenna connector.
2) Set the adjustment value on the "Adjust
Utility" screen.
: 1-4
: 1-2 • Loosely couple a frequency counter to the
antenna connector.
• I/O Check window
OPERATION
* * *
5 - 5
ADJUSTMENT
VALUE
ITEM
[RX LVA(Adjust)] 1.00 V*
1.20 V**
[TX LVA(Adjust)]
3.50–4.10 V*
[LV (RX)]
3.50–3.80 V**
2.00–4.00 V*
[LV (TX)]
3.00–3.60 V**
[RX LVA(Adjust)] 3.70 V
3.00 V*
3.30 V**
[TX LVA(Adjust)]
470.000000
MHz*
[REF] 520.000000
MHz**
(±50 Hz)
Lock voltage
appears here