![background image](http://html.mh-extra.com/html/icom/ic-f2000-series/ic-f2000-series_service-manual_2038222017.webp)
4-7
ADJUSTMENT
TRANSCEIVER’S
CONDITION
OPERATION
ADJUSTMENT
ITEM
VALUE
PLL LOCK
VOLTAGE
- Verification -
(RX Band low)
13 • CH No.: 1
• Receiving
• Click
button to display the "I/O
Check" window as shown below.
•
Click [Update (F5)] to re-load the
latest value for each item.
[LVIN]
(On the "I/O
Check" window)
For 400~470 MHz
versions:
0.9~1.1 V
For 450~512/520 MHz
versions:
0.8~1.2 V
(RX Band high)
14 • CH No.: 3
• Receiving
For 400~470 MHz
versions:
2.55~2.95 V
For 450~512/520 MHz
versions:
Less than 4.0 V
(TX Band low)
15 • CH No.: 1
• Transmitting
For 400~470 MHz
versions:
0.9~1.1 V
For 450~512/520 MHz
versions:
0.8~1.2 V
(TX Band high)
16 • CH No.: 3
• Transmitting
3.6~4.0 V
REFERENCE
FREQUENCY
- Adjustment -
(Band high)
1
• CH No.: 3
• Transmitting
• Loosely couple the frequency
counter to the antenna connector.
[REF Data]
For 400~470 MHz
versions:
470.000000 MHz
(±500 Hz)
For 450~512/520 MHz
versions:
520.000000 MHz
(±500 Hz)
- Verification -
(Band low)
2
• CH No.: 1
• Transmitting
–
For 400~470 MHz
versions:
400.000000 MHz
(±500 Hz)
For 450~512/520 MHz
versions:
450.000000 MHz
(±500 Hz)
(Band center)
3
• CH No.: 2
• Transmitting
For 400~470 MHz
versions:
435.000000 MHz
(±500 Hz)
For 450~512/520 MHz
versions:
485.000000 MHz
(±500 Hz)
• I/O Check window
* * *
(The values shown above are only examples.
Each transceiver has own values.)
Lock voltage
4-2 FREQUENCY ADJUSTMENTS (CONTINUED)
1) Select an adjustment item using [↑]/[↓]/[←]/[→] on the PC’s keyboard.
2) Set or modify the adjustment value as specified using [Space]/[Back Space] on the PC’s keyboard.