Frequency Adjustment - Icom IC-F4001 Service Manual

5-2 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
VOLTAGE
-Adjustment-
(RX) 2 • CH.
• Receiving
(TX) 3 • CH.
• Transmitting
PLL LOCK 1 • CH.
VOLTAGE • Receiving
-Verify-
(RX)
(TX) 2 • CH.
• Transmitting
REFERENCE 1 • CH.
FREQUENCY • Transmitting
CONDITION
• Connect an RF power meter to the
– antenna connector.
: 1 • Select the item [RX LVA], then push
[ENTER].
: 1 • Select the item [TX LVA], then push
[ENTER].
: 2 • Click the [Reload (F5)] button to check
on the "I/O Check window" as illustrated
below.
: 2
: 3 • Loosely couple a frequency counter to the
antenna connector.
• I/O Check window
(The values shown above are example only.
Each transceiver has own values.)
OPERATION
Lock voltage
* * *
5 - 5
ADJUSTMENT
VALUE
ITEM
– –
1.0 V
[RX LVA]
1.0 V
[TX LVA]
3.0–4.0 V
(Verify)
[LVIN]
(On the "I/O
Check window")
2.7–3.9 V
(Verify)
470.0000 MHz
[REF] (±300 Hz)