Frequency Adjustments - Icom IC-F1000 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, and then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
PLL LOCK 1
VOLTAGE
-Preparation-
-ADJUSTMENT- 2 • Select the item [RX LVA Start], then push [ENTER] to enter the
(RX Band low) lock voltage adjustment mode.
3 • Channel:
• Receiving
4 • Select the item [RX LVA Start], then push [ENTER].
(RX Band high) 5 • Channel:
• Receiving
6 • Select the item [RX LVA Start], then push [ENTER] to quit the
lock voltage adjustment mode.
-ADJUSTMENT- 7 • Select the item [TX LVA Start], then push [ENTER] to enter the
(TX Band low) lock voltage adjustment mode.
8 • Channel:
• Receiving
9 • Select the item [TX LVA Start], then push [ENTER] to quit the
lock voltage adjustment mode.
(TX Band high) 10 • Channel:
• Receiving
11 • Select the item [TX LVA Start], then push [ENTER] to quit the
lock voltage adjustment mode.
PLL LOCK 1 • Channel:
VOLTAGE • Receiving
-Verify-
(RX Band low)
(RX Band high) 2 • Channel:
• Receiving
(TX Band low) 3 • Channel:
• Transmitting
(TX Band high) 4 • Channel:
• Transmitting
REFERENCE 1 • Channel:
FREQUENCY • Transmitting
• I/O Check window
CONDITION
1) Connect an RF power meter to the
antenna connector.
– 2) Set the preset adjustment value on the
adjustment utility window.
1-1 • Select the item [RX LVA FL], then push
[ENTER].
1-2 • Set the item adjustment value in the [RX
LVA FH] on the adjustment utility window,
then push [ENTER].
1-1 • Select the item [TX LVA FL], then push
[ENTER].
1-2 • Set the item adjustment value in the [TX
LVA FH] on the adjustment utility window,
then push [ENTER].
1-3 • Click the [Reload (F5)] button to check on
the "I/O Check window" as below.
1-4
1-3
1-4
1-5 • Loosely couple a frequency counter to the
antenna connector.
(The values shown above are only examples.
Each transceiver has own values.)
OPERATION
Lock voltage
* * *
5-4
ADJUSTMENT
VALUE
ITEM
LV (RX LVA FL) 46
(0.9 V)
LV (TX LVA FL)
LV (RX LVA FH) 255
(5.0 V)
LV (TX LVA FH)
–
[RX LVA Start]
0.9 V
[RX LVA FL]
[RX LVA Start] –
255
[RX LVA FH] (5.0 V)
–
[RX LVA Start]
–
[TX LVA Start]
0.9 V
[TX LVA FL]
–
[TX LVA Start]
255
[TX LVA FH] (5.0 V)
–
[TX LVA Start]
[LVIN] 0.9 V ±0.2 V
(On the "I/O (Verify)
Check window")
Less than
3.5 V
(Verify)
0.9 V ±0.2 V
(Verify)
Less than
3.5 V
(Verify)
174.000000
[REF] MHz
(±150 Hz)