Icom IC-7600 Service Manual page 40

4-9-2 SOFTWARE ADJUSTMENT (RECEIVE) (continued)
ADJUSTMENT
ADJUSTMENT
PREPARATION
TOTAL GAIN 1
(Pre-AMP: OFF)
[Total Gain HF PRE
(Pre-AMP: ON) 2 [Total Gain HF PRE
EXTERNAL AGC 1
[AGC (RX-DSP)]
S-METER 1
[HF S0 LEVEL]
2
[HF S9 LEVEL]
3
[S9+60 LEVEL]
†
; The output level of the standard signal generator (SSG) is indicated as the SSG's terminated circuit.
ITEM
1) Connect an SSG to [ANT1] and set it as;
Frequency
– Modulation : None
Level
2) Connect an AC Millivoltmeter to [EXT-SP].
1) Set the SSG as;
Level
2) Set the audio output level to 0 dB as the reference.
3) Set the SSG as;
OFF]
Level
4) Adjust the AF output level using MAIN DIAL, then push [F-6]
(SET).
• Adjust the AF output level using MAIN DIAL, then push [F-6]
(SET).
ON]
1) Set the SSG as;
Level
2) Push [F-6] (SET).
1) Set the SSG as;
Level
2) Push [F-6] (SET). (the beep "Pi" sounds)
NEVER CHANGE the SSG output level until the two short beeps
"PiPi" sound. The two short beeps will sound after 0.5 sec. from
1st single beep "Pi" sounds.
1) Set the SSG as;
Level
2) Push [F-6] (SET). (the beep "Pi" sounds)
NEVER CHANGE the SSG output level until the two short beeps
"PiPi" sound. The two short beeps will sound after 1 sec. from 1st
single beep "Pi" sounds.
1) Set the SSG as;
Level
2) Push [F-6] (SET). (the beep "Pi" sounds)
NEVER CHANGE the SSG output level until the two short beeps
"PiPi" sound. The two short beeps will sound after 0.5 sec. from
1st single beep "Pi" sounds.
(Returns to "ADJUST MODE.")
OPERATION
: 14.1515 MHz
: OFF (initially)
†
: +60 dBµ (–47 dBm)
: "OFF"
†
: +70 dBµ (–37 dBm)
: "OFF"
†
: +34 dBµ (–73 dBm)
†
: +94 dBµ (–13 dBm)
4 - 21
VALUE
–
–30 dB
–
–
–
–