Frequency Adjustment - Icom IC-F4101D 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].
ADJUSTMENT
PLL LOCK VOLTAGE 1 • Channel
-RX-
(Band low)
(Band high) 2 • Channel
-TX- 3 • Channel
(Band low)
(Band high)* 4 • Channel
-VERIFY-** 5 • Channel
REFERENCE 1 • Channel
FREQUENCY
*: For only [350 MHz band]. **: For only [400 MHz band].
(The values shown above are an example only. Each transceiver has own values.)
TRANSCEIVER'S
CONDITION
: 1-1 1) Connect an RF power meter to the
• Receiving antenna connector.
2) Set the preset adjustment value on
the adjustment utility window.
: 1-2
• Receiving
: 1-1
• Transmitting
: 1-2
• Transmitting
: 1-2 • Click the [Update (F5)] button to check
• Transmitting on the "I/O Check window" as below.
: 1-3 • Loosely couple a frequency counter to
• Transmitting the antenna connector.
• I/O Check window
OPERATION
* * *
5 - 4
ADJUSTMENT
VALUE
ITEM
[RX LVA(Adjust)] 1.00 V
[RX LVA(Check)] 3.70 V
1.00 V
[TX LVA(Adjust)]
3.20 V
[TX LVA(Check)]
[LVIN] 2.00–4.00 V
(On the "I/O (Verify)
Check window")
470.000000 MHz
[400 MHz band]
400.000000 MHz
[REF]
[350 MHz band]
(±50 Hz)
Lock voltage
appears here