Icom IC-M72

5 - 5
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
UNIT OPERATION
RECEIVE
SENSITIVITY
[BPF T1]
[BPF T2]
1 • Operating CH. : 16
• Connect the standard signal
generator to the antenna connector
and set as;
Frequency : 156.8000 MHz
Level : +20 dB
µ
* (–87 dBm)
Modulation : 1 kHz
Deviation : ±3.0 kHz
• Receiving
Top
pannel
Connect the distortion meter
with an 8
Ω
load to the [MIC/
SP] jack through the JIG
cable.
Minimum distortion level
CONVENIENT:
RECEIVE SENSITIVITY can be adjusted automatically.
1. Put the cursor on the [BPF ALL Sweep] on the CS-M72 ADJ's screen and push the [ENTER] key.
2. The connected PC tunes BPF T1 and T2 to peak level automaticaly.
or
1. Put the cursor on the one of BPF T1 and T2 as desired.
2. Push the [ENTER] key to start tuning.
3. Repeat 1 and 2 to perform additional BPF tuning.
SQUELCH
LEVEL
[NOISE]
Need to adjust "SQUELCH LEVEL" after "RECEIVE SENSITIVITY" is adjusted. Otherwise, "SQUELCH
LEVEL" will not be adjusted properly.
1 • Operating CH. : 16
• Connect the standard signal
generator to the antenna connector
and set as;
Frequency : 156.8000 MHz
Level : –4 dB
µ
* (–111 dBm)
Modulation : 1 kHz
Deviation
: ±3.0 kHz
• Receiving
Top
panel
Push the [ENTER] key on the
keyboad of the connected PC.
Automatic
adjustment
TRANSMIT
OUTPUT POWER
[RF Power (High)]
1 • Operating CH. : 16
• RF power : High
• Transmitting
Top
panel
Connect the RF power meter
to the antenna connector.
5.6 W
(Except [AUS], [AUS-1])
4.7 W
([AUS], [AUS-1])
[RF Power (Middle)] 2 • Operating CH. : 16
• RF power : Middle
• Transmitting
3.0 W
[RF Power (Low)] 3 • Operating CH. : 16
• RF power : Low
• Transmitting
0.75 W
FM DEVIATION
[MOD]
1 • Operating CH. : 16
• Set the FM deviation meter as;
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Connect the audio generator to
the [MIC/SP] jack through OPC-973
and set as;
Frequency : 1 kHz
Level : 25 mV rms
• Transmitting
Top
panel
Connect the FM deviation
meter to the antenna con-
nector through the attenuator.
±4.30–4.40 kHz
VOX
[VOX]
1 • Operating CH. : 16
• Set to VOX mode.
(Push and hold [
], then push
[H/L•LOCK])
• No audio applied to the [SP MIC] jack.
PC
screen
Push the [ENTER] key on the
keyboad of the connected PC.
Automatic
adjustment
5-3 SOFTWARE ADJUSTMENT (RECEIVE AND TRANSMIT)
Select the adjustment item with [
↑
] / [
↓
] keys, then set the value with [
←
] / [
→
] keys on the connected PC.
NOTE: "RECEIVE SENSITIVITY" should be adjusted before "SQUELCH LEVEL," or "SQUELCH LEVEL"
will not be adjusted properly.
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.