Receive Adjustment; Transmit Adjustment - Icom IC-M25 Service Manual

6-3 RECEIVE ADJUSTMENTS
1) Select an adjustment item using [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specified using [←]/[→] on the PC's keyboard, and then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
CONDITION
RX SENSITIVITY 1 NOTE: When "RX SENSITIVITY" is re-adjusted, "SQUELCH" must be re-adjusted too.
• CH.:
• Receiving
SQUELCH 1 NOTE: When "RX SENSITIVITY" must be adjusted before "SQUELCH." And when "RX SENSITIVITY" is
• CH.:
• Receiving
†
The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
6-4 TRANSMIT ADJUSTMENTS
1) Select an adjustment item using [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specified using [←]/[→] on the PC's keyboard, and then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
TX OUTPUT 1 • CH.:
POWER • Transmitting
(High)
(L_High)* 2
(Low) 3
(E_Low)*
4
*For only [FRG] version.
16 • Connect an SSG to the antenna connector and
set it as;
Frequency: 156.800 MHz
Level † :
Modulation: 1 kHz
Deviation:
re-adjusted, "SQUELCH" must be re-adjusted too.
16 • Connect an SSG to the antenna connector and
set it as;
Frequency: 156.800 MHz
†
Level :
Modulation: 1 kHz
Deviation:
CONDITION
16 • Connect an RF power meter to the
antenna connector.
OPERATION
+30 dBµ (–77 dBm)
±3.0 kHz
–4 dBµ
(–111 dBm)
±3.0 kHz
OPERATION
6-3
ADJUSTMENT
VALUE
ITEM
Push [ENTER]
on [BPF].
(Automatic
[BPF]
adjustment)
Push [ENTER]
on [Noise].
(Automatic
[Noise]
adjustment)
ADJUSTMENT
VALUE
ITEM
[RF Power (High)]
[RF Power (L_High)]
[RF Power (Low)]
[RF Power (E_Low)]
4.5 W
2.5 W
0.75 W
0.45 W