Icom IC-M87 Service Manual page 18

5-2 SOFTWARE ADJUSTMENTS
• Select the adjustment item with [↑] / [↓] keys, then set specifi ed value or condition with [←] / [→] keys on the connected com-
puter keyboard.
ADJUSTMENT
P L L L O C K 1 • Operating CH
VOLTAGE • Receiving
2 • Operating CH
• Transmitting
REFERENCE 1 • Operating CH
FREQUENCY • Connect an RF power meter to the an-
[REF] tenna connector.
• Transmitting
OUTPUT 1 • Operating CH
POWER • Transmitting
[Power (High)]
[Power (Mid] 2 • Operating CH
• Transmitting
[Power (Low)] 3 • Operating CH
• Transmitting
[Power (E-Low)] 4 • Operating CH
• Transmitting
1 • Operating CH
FM
• Connect an audio generator to the multi
DEVIATION
connector through the JIG cable and set
[MOD W]
as;
• Set an FM deviation meter as;
HPF
LPF
De-emphasis
Detector
• Transmitting
2 • Operating CH
[MOD N]
• Transmitting
[Balance (W)] 1 • Operating CH
• No audio is applied to the multi connector.
• Set an FM deviation meter as;
HPF
LPF
De-emphasis
Detector
• Transmitting.
[Balance (N)] • Operating CH
• Transmitting.
ADJUSTMENT CONDITION
: A1
: A1
: A1
: A1
: A1
: A1
: A1
: A1
: 1.0 kHz/200 mVrms
: OFF
: 20 kHz
: OFF
: (P±P)/2
: A2
: A3
: OFF
: 20 kHz
: OFF
: (P±P)/2
: A4
MEASUREMENT
UNIT LOCATION
PC Connect a digital multimeter
screen to the check point LV.
Top Loosely couple a frequency
panel counter to the antenna con-
nector.
Top Connect an RF power meter
panel to the antenna connector.
Top Connect an FM deviation me-
panel ter to the antenna connector
through an attenuator.
Top Connect an FM deviation me-
panel ter with an oscilloscope to the
antenna connector through an
attenuator.
5 - 4
VALUE
1.85–3.35 V
(Verify)
1.8–3.3 V
(Verify)
160.0000 MHz
0.75 W
0.75 W
0.75 W
0.45 W
±4.15–4.25 kHz
±2.00–2.10 kHz
Set to square wave
form