Frequency Adjustment - Icom IC-FR5000 Service Manual

6-2 FREQUENCY ADJUSTMENT

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
PLL LOCK 1
VOLTAGE
-Preparation-
-Adjust- 2 • CH.
RX • Receiving
(Band center)
RX 3 • CH.
(Band high) • Receiving
TX 4 • CH.
(Band low) • Transmitting
TX 5 • CH.
(Band center) • Transmitting
LOCK 1 • CH.
VOLTAGE • Receiving
VERIFY
RX
(Band low)
RX 2 • CH.
(Band center) • Receiving
TX 3 • CH.
(Band center) • Transmitting
TX 4 • CH.
(Band high) • Transmitting
TX 1
FREQUENCY
2 • CH.
• Transmitting
1) Connect an RF power meter to the
TX antenna.
2) Set the preset adjustment value on
–
the adjustment utility window.
: 1-1 • Select the item [RX LVA L], then
push the [ENTER] key.
: 1-2 • Select the item [RX LVA H], then
push the [ENTER] key.
: 1-3 • Select the item [TX LVA L], then push
the [ENTER] key.
: 1-4 • Select the item [TX LVA H], then
push the [ENTER] key.
: 1-5 • Ve r i f y t h e l o ck vo l t a g e a t e a c h
channels on the [RX LIVIN] item on
the "I/O Check window" as below.
: 1-6
: 1-7 • Ve r i f y t h e l o ck vo l t a g e a t e a c h
channels on the [TX LIVIN] item on
the "I/O Check window" as below.
: 1-8
1) Set the item [TX Mode] to "1."
– 2) Connect an RF power meter to the
TX antenna.
: 1-9 1) Adjust the frequency using [←] / [→]
keys of the PC's keyboard.
2) Push the [ENTER] key to store the
adjust value.
• I/O CHECK WINDOW
*The above voltages are just an example.
6 - 6
OPERATION
Lock voltage verify
ADJUSTMENT
VALUE
ITEM
[LV (RX L)] 161 [3.15V]
[LV (RX H)] 153 [3.00V]
[LV (TX L)] 51 [1.0V]
[LV (TX H)] 36 [0.7V]
[RX LVA L]
[RX LVA H]
(Automatic
adjustment)
[TX LVA L]
[TX LVA H]
[RX LIVIN]
0.5–1.5 V
(I/O Check
(Verify)
window)
3.0–4.5 V
[TX LIVIN]
(Verify)
(I/O Check
2.0–3.5 V
window)
(Verify)
[TX Mode] "1"
[TX REF] 173.9000 MHz