Transmit Adjustments - Icom IC-M85 Service Manual

4-4 TRANSMIT ADJUSTMENTS

1. Select an adjustment item by pushing [↑]/[↓]/[←]/[→] on the PC's keyboard.
2. Set or modify the adjustment value as specified using [Space]/[BackSpace] on the PC's keyboard.
ADJUSTMENT
TX OUTPUT 1 •
POWER •
(High power)
(Middle power) 2
( Land High 3
power)*
1
(Low power)
4
DEVIATION 1 –
( Narrow 2 •
bandwidth)
•
( Middle 3 •
bandwidth)*
•
2
(Wide bandwidth) 4 •
•
MODULATION 1 •
BALANCE •
(Narrow)
(Middle)* 2 •
2
•
(Wide) 3 •
•
CTCSS 1 •
DEVIATION •
(Narrow)
(Middle)*
2 •
2
•
(Wide) 3 •
•
DTCS DEVIATION •
(Narrow) •
(Middle)* •
2
•
(Wide) •
•
VOX
1 •
ATIS DEVIATION* 1 –
2
ATIS (1300 Hz)
•
•
ATIS (2100 Hz) •
•
* For only [USA] version. * For only [FRG] version.
1 2
TRANSCEIVER'S
CONDITION
Channel: 10
Transmitting
Channel: 11
Transmitting
Channel: 12
Transmitting
Channel: 13
Transmitting
Channel: 14
Transmitting
Channel: 15
Transmitting
Channel: 16
Transmitting
Channel: 17
Transmitting
Channel: 18
Transmitting
Channel: 19
Transmitting
Channel: 20
Transmitting
Channel: 21
Transmitting
Channel: 22
Transmitting
Channel: 23
Channel: 24
Transmitting
Channel: 25
Transmitting
OPERATION
• Connect the test equipment to the
antenna connector as shown in
page 4-1.
• Adjust the power supply voltage to
7.2 V while transmitting.
Set the test equipment to:
HPF: OFF
LPF: 20 kHz
De-emphasis: OFF
Detector: (P–P)/2
Set the test equipment to:
Frequency: 1 kHz
Waveform: Sine wave
Level: 150 mV rms
No audio signals applied to the JIG
cable.
No audio signals applied to the JIG
cable.
No audio signals applied to the JIG
cable.
• Set the VOX function ON.
• Set the test equipment to:
Frequency: 1 kHz
Level: 40 mV rms
Set the test equipment to:
HPF: OFF
LPF: 20 kHz
De-emphasis: OFF
Detector: (P–P)/2
Select "ATIS" item to 1300 Hz.
Select "ATIS" item to 2100 Hz.
4-6
ADJUSTMENT
VALUE
ITEM
[RF Power 5 W
(High)]
[RF Power 3 W
(Middle)]
[RF Power 1.75 W
(LMR High)]
[RF Power
0.75 W
(Low)]
[MOD ±2.10 kHz
(Narrow)]
±0.05 kHz
[MOD (Middle)] ±3.20 kHz
±0.05 kHz
[MOD (Wide)] ±4.10 kHz
±0.05 kHz
[BAL (Narrow)] Set to square
wave form
[BAL (Middle)]
[BAL (Wide)]
[CTCSS ±0.34 kHz
(Narrow)] ±0.02 kHz
[CTCSS
±0.55 kHz
(Middle)] ±0.02 kHz
[CTCSS ±0.68 kHz
(Wide)] ±0.02 kHz
[DTCS ±0.34 kHz
(Narrow)] ±0.02 kHz
[DTCS ±0.55 kHz
(Middle)] ±0.02 kHz
[DTCS (Wide)] ±0.68 kHz
±0.02 kHz
– Verify that the
transceiver is
transmitting,
and the status
indicator lights
red.
– –
– ±1.3 kHz ±10%
(Verify)
±2.1 kHz ±10%
(Verify)