Section 5 Adjustment Procedures; Preparation - Icom IC-M2A Service Manual

SECTION 5 ADJUSTMENT PROCEDURES

5-1 PREPARATION

EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter Frequency range
(terminated type) Impedance
SWR
Frequency range
Frequency counter Frequency accuracy : ±1 ppm or better
Sensitivity
Digital multimeter Input impedance
ENTERING THE ADJUSTMENT MODE
• Push and hold the [H/L] key and [PTT] switch, and then turn power ON.
OPERATING IN THE ADJUSTMENT MODE
• Change adjustment items:
• Change adjustment values:
EXITING THE ADJUSTMENT MODE
When adjustment is finished, need to do follow operation to cancel the adjustment mode. Otherwise, the transceiver does not
work properly.
• Turn power OFF.
• Push and hold the [H/L] key and [PTT] switch, and then turn power ON.
• DC POWER CABLE CONNECTION
connect (soldering)
GRADE AND RANGE
: 7.5 V DC
: 3 A or more
: 0.1–10 W
: 100–300 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–300 MHz
: 100 mV or better
: 10 MΩ/DC or better
[16] key
[Y] and [Z] keys
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Top view
EQUIPMENT
FM deviation meter
Audio generator
Standard signal
generator (SSG)
Attenuator
DC power supply
+
connect (soldering)
Bottom view
5 - 1
GRADE AND RANGE
Frequency range : 30–300 MHz
Measuring range : 0 to ±10 kHz
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 100–300 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Power attenuation : 40 dB or more
Capacity : 10 W or more
+
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