Icom IC-F24/S, Service Manual Addendum

Page: 63 / 85

5 - 7
5-2-2 FREQUENCY ADJUSTMENT FOR IC-F26-L
1) Select an adjustment item using cursor or [
↑
] / [
↓
] keys of the PC’s keyboard.
2) Set or modify the adjustment value as specifi ed using [
←
] / [
→
] keys of the PC’s keyboard, then push the [ENTER] key.
ADJUSTMENT ADJUSTMENT CONDITION OPERATION
ADJUSTMENT
ITEM
VALUE
PLL LOCK
VOLTAGE
-Preparation- 1 • Connect an RF Power Meter to
the antenna. – – –
-Adjust-
RX 2 • CH. : CH.1
• Receiving
• Monitoring lock voltage at the "LVIN"
in the "ADJUSTMENT WINDOW"
(see the previous page), adjust the
[RX LVA] using [
←
] / [
→
] keys on the
PC’s keyboard.
or
• Set the
[RX LVA] to "51" , then push
the [ENTER] key.
[RX LVA]
1.4 V
(at the "LVIN"
item)
or
"72"
(at the [RX/TX
LVA])
TX 3 • CH. : CH.1
• Transmitting
• Monitoring lock voltage at the "LVIN"
in the "ADJUSTMENT WINDOW"
(see the previous page), adjust the
[TX LVA] using [
←
] / [
→
] keys on the
PC’s keyboard.
or
• Set the
[TX LVA] to "51" , then push
the [ENTER] key.
[TX LVA]
LOCK
VOLTAGE
VERIFICATION
RX
1 • CH. : CH.2
• Receiving
• Verify the lock voltage at the "LVIN"
in the "ADJUSTMENT WINDOW"
(see the previous page).
[LVIN]
3.3–4.5 V
(Verify)
TX 2 • CH. : CH.2
• Transmitting
REFERENCE
FREQUENCY 1 • Connect an RF Power Meter to
the antenna.
– – –
2 • CH. (16CH/2CH) : CH.2
• Transmitting
1) Adjust the frequency using [
←
] / [
→
]
keys on the PC’s keyboard.
2) Push the [ENTER] key to store the
adjust value.
[REF] 389.9000 MHz