If Peak And Total Gain Adjustments - Icom IC-PCR100 Service Manual

5-3 IF PEAK AND TOTAL GAIN ADJUSTMENTS

ADJUSTMENT ADJUSTMENT CONDITION
IF PEAK 1 • Display freq.
• Mode
• AGC
• Filter
• R521, R523
• Connect a standard signal gen-
erator to [ANT] and set as:
Frequency
Level
Modulation
• Receiving
2 • Display freq.
• Set an SSG as :
Frequency
• Receiving
TOTAL GAIN 1 • Display freq.
• Mode
• Filter
• Set an SSG as :
Frequency
Level
Modulation
Deviation
• Receiving
2 • Mode
• Filter
• Set an SSG as :
Mode
Level
Modulation
Deviation
• Receiving
3 • Mode
• Filter
• Set an SSG as :
Level
Modulation
Deviation
• Receiving
4 • Set an SSG as :
Level
Modulation
Deviation
• Receiving
*This output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
MEASUREMENT
UNIT
: 130.0200 MHz
: FM
: ON
: 15 kHz
: Center
: 130.0200 MHz
: 50 µV* (–73 dBm)
: OFF
: 149.9800 MHz
: 149.9800 MHz
: 149.9700 MHz Rear
: AM Panel
: 6.0 kHz
: 149.97000 MHz
: 1.8 µV*
(–102 dBm)
: 1 kHz
: 70 %
: FM
: 15.0 kHz
: FM
: 1.0 mV*
(–47 dBm)
: 1 kHz
: 3.5 kHz
: AM
: 6.0 kHz
: 1.0 mV*
(–47 dBm)
: 1 kHz
: 70 %
Rear
: 100 mV* panel
(–7 dBm)
: 1 kHz
: 70 %
5 - 5
LOCATION
Maximum S-meter
level
Connect an AC Maximum AF level
millivoltmeter to the
[EXT SP] jack with
an 8 Ω dummy load.
Any AF level
+1 dB of AF level dif-
ference as step 2
Connect a distortion 10 % distortion
meter to the [EXT
SP] jack with an 8 Ω
dummy load.
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
Use the adjust-
ment software.
(see page 5-7,
Tuned BPF)
MAIN
Computer
display
MAIN
MAIN
L112
AF
Gain
R523
R521