Icom IC-M34, Руководство по обслуживанию

Страница: 16 / 30

5 - 5
RECEIVE
SENSITIVITY
[BPF T1] NOTE1: “RECEIVE SENSITIVITY” should be adjusted before “SQUELCH LEVEL.” Otherwise, “SQUELCH
LEVEL ” will not be adjusted properly.
NOTE2: DO NOT put the cursor on [BPF ALL] and [BPF2] then push the [ENTER] key. Otherwise, “RECEIVE
SENSITIVITY” will not be adjusted properly.
1 • Operating CH. : 16
• Connect an SSG to the antenna con-
nector and set as;
Frequency
: 156.8000 MHz
Level : 20 dB
µ
* (–87 dBm)
Modulation : 1 kHz
Deviation : ±3.0 kHz
• Receiving
Put the cursor on the [BPF T1], and push
the [ENTER] key on the keyboad of the
connected PC. Automatic
adjustment
SQUELCH
LEVEL
[Noise] 1 • Operating CH. : 16
• Connect an SSG to the antenna con-
nector and set as;
Frequency
: 156.8000 MHz
Level : –4dB
µ
* (–111 dBm)
Modulation : 1 kHz
Deviation : ±3.0 kHz
• Receiving
Put the cursor on the [Noise], and push
the [ENTER] key on the keyboad of the
connected PC. Automatic
adjustment
5-3 SOFTWARE ADJUSTMENT (TRANSMIT and RECEIVE)
Select an adjustment item using [
↑
] / [
↓
] keys, then set to the specifi ed value using [
←
] / [
→
] keys on the connected PC’s keyboard.
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE
TRANSMIT
OUTPUT
POWER
[RF Power
(High)] NOTE: DO NOT put the cursor on [RF POWER (E-Low)] then push the [ENTER] key. Otherwise, “TRANSMIT
OUTPUT POWER” will not be adjusted properly.
1 • Operating CH. : 16
• RF power : High
• Transmitting
Connect an RF power meter to the antenna
connector.
5.0 W
[RF Power
(A-High)] 2 • Operating CH. : 16
• RF power : A-High
• Transmitting 2.0 W
[RF Power
(Low)] 3 • Operating CH. : 16
• RF power : Low
• Transmitting 0.75 W
FM DEVIATION
[MOD] 1 • Operating CH. : 16
• RF power : Low
• Set the FM deviation meter as;
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Connect an audio generator to the [SP MIC]
connector through the JIG cable, and set as;
Frequency : 1 kHz
Level : 25 mV rms
• Transmitting
Connect an FM deviation meter to the
antenna connector through an attenuator. ±4.30 to ±4.40 kHz