Icom IC-7600 Service Manual page 32

4-7 MAIN UNIT ADJUSTMENT (SCOPE CIRCUIT)
ADJUSTMENT ADJUSTMENT CONDITION
SCOPE 1 • Frequency
DISPLAY
• Mode
• [DUALWATCH] : "OFF"
• [P.AMP]
• [ATT]
• [SCOPE]
• [SCOPE ATT] : "OFF"
2
• [SPAN]
• Receiving
3
SCOPE GAIN 1 • Receiving
SCOPE ATT 1 • [SCOPE ATT] : "30 dB"
• Receiving
†
; The output level of the standard signal generator (SSG) is indicated as the SSG's terminated circuit.
: 14.200 MHz • Connect an SSG to [ANT1] and set
as;
(Main band)
Frequency
: CW
Modulation
Level
: "OFF"
: "OFF"
: "ON"
• Connect an SSG to J6001 and set
: "±25 kHz"
as;
Frequency
Modulation
Level
• Connect an SSG to [ANT1] and set
as;
Frequency
Modulation
Level
1) Connect an SSG to [ANT1] and set
as;
Frequency
Modulation
Level
2) Adjust the waveform to set the peak of
the wave spectrum reaches the 6th scale.
1) Connect an SSG to [ANT1] and set
as;
Frequency
Modulation
Level
2) Adjust the waveform to set the peak of
the wave spectrum reaches the 3rd scale.
<fig. 1>
<fig. 2>
4 - 13
OPERATION
: 14.200 MHz
: None
†
: +54 dBµ (–53 dBm)
: 71.715 MHz
: None
†
: +100 dBµ (–7 dBm)
: 14.200 MHz
: None
†
: +54 dBµ (–53 dBm)
: 14.200 MHz
: None
†
: +54 dBµ (–53 dBm)
: 14.200 MHz
: None
†
: +54 dBµ (–53 dBm)
6th scale
3rd scale
ADJUSTMENT
VALUE
POINT
L6032→L6037→
L6041→L6023→
Maximum
L6028→C6076
waveform
(in sequence)
on the
and
SCOPE
L6023, L6028,
screen
C6076
(repeatedly)
Minimum
waveform
C6076 on the
SCOPE
screen
Maximum
waveform
L6023, L6028
on the
(repeatedly)
SCOPE
screen
R6071 (See fi g.1)
R6043 (See fi g.2)