Icom IC-M2A Service Manual page 15

5-2 PLL AND RX SENSITIVITY ADJUSTMENTS
ADJUSTMENT ADJUSTMENT CONDITION
LOCK 1 • Operating channel : ch16
VOLTAGE • Receiving
• Operating channel : ch16
2
• Output power
• Transmitting
• Operating channel : ch16
RX 1
• Set an SSG as:
SENSITIVITY
Frequency
Level
Modulation
Deviation
• Receiving
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
CP1
PLL lock voltage
check point
MEASUREMENT
UNIT
MAIN Connect a digital
multi-meter or oscil-
loscope
check point CP1.
: Low
Top Connect an SSG to
Panel the antenna con-
: 156.8 MHz
nector and a SINAD
meter with 8 Ω load
(ch. 16)
: 3.2 µV*
to the [SP] jack.
(–97 dBm)
: 1 kHz
: ±3.5 kHz
5 - 3
VALUE
LOCATION
1.8 V
to the
1.7 V
0.35 µV (–116 dBm)
0.56 µV (–112 dBm)
ADJUSTMENT
POINT
UNIT ADJUST
Verify
Verify
[M2A]
[M21]