4 - 8
4-4 RECEIVER ADJUSTMENTS
*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.
RECEIVER
PEAK
RECEIVER
TOTAL GAIN
NOISE
BLANKER
Maximum AF output
level
30 dB of AF level differ-
ence
Adjust the maximum
noise wave displayed
on the oscilloscope.
At the point where the
noise just reduces.
1
1
1
2
• Display freq.
: 14.15000 MHz
• Mode
: USB
• [RIT]
: OFF
• [AGC]
: Fast (F AGC)
• [NB]
: OFF
• [P.AMP/ATT]
: Preamp ON
• Connect a standard signal genera-
tor to the [ANT] connector and set
as:
Frequency
: 14.15150 MHz
Level
: 0.5 µV* (–113 dBm)
Modulation
: OFF
• Receiving
• [P.AMP/ATT]
: Preamp OFF
• Set an SSG as:
Frequency
: 14.15150 MHz
Level
: 500 µV* (–53 dBm)
and OFF
Modulation
: OFF
• Receiving
• Display freq.
: 14.15000 MHz
• Mode
: USB
• [P.AMP/ATT]
: Preamp ON
• [NB]
: ON
• Connect an SSG to the [ANT] con-
nector and set as:
Frequency
: 14.15150 MHz
Level
: 18 µV* (–82 dBm)
Modulation
: OFF
and apply the following signal to
the [ANT] connector.
• Receiving
• [NB]
: ON
• Set an SSG as:
Level
: 10 µV* (–87 dBm)
Modulation
: OFF
• Receiving
L881,
L882,
L1101,
L1102,
L1201
R1203
L1052,
L1053
Verify
Connect an AC milli-
voltmeter to the [EXT
SP] jack with an 8
Ω
dummy load.
Connect an AC milli-
voltmeter to the [EXT
SP] jack with a 8
Ω
dummy load.
Connect an oscillo-
scope to check point
CP1001.
MAIN
MAIN
MAIN
Rear
Panel
Rear
Panel
MAIN
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1 msec.
100 msec.
