Icom IC-7800 Service Manual page 66

SOFTWARE ADJUSTMENTS–Continued
ADJUSTMENT ADJUSTMENT CONDITION
DRIVE LEVEL
• Connect an audio generator to [MIC]
1
connector and set as;
Frequency
Vd METER
1
Level
• Connect an RF power meter to
Id METER
1
[ANT1] connector.
• Connect a 100
[ANT2] connector.
2
3
SWR METER
1
TOTAL GAIN
• Push [F4 (RX)] to enter the RX
1
adjustment mode.
• Connect an SSG to [ANT1]
connector and set as;
Frequency
Level
2
Modulation
• Connect an AC millivolt meter
to [SP] jack with an 8
3 • Set an SSG as;
Frequency
Level
4
• Set an SSG as;
5
Frequency
Level
6
• Set an SSG as;
7
Frequency
Level
8
*This output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
: 1.5 kHz
: 10 mV
Ω
dummy load to
Total Gain A HF PRE OFF
: 14.1515 MHz
: 1 mV* (–47 dBm)
Total Gain A HF PRE ON
: OFF
Ω
load.
Total Gain A 50M PRE OFF
: 50.1515 MHz
: 1 mV* (–47 dBm)
Total Gain A 50M PRE ON
Total Gain B HF PRE OFF
: 14.1515 MHz
: 1 mV* (–47 dBm)
Total Gain B HF PRE ON
Total Gain B 50M PRE OFF
: 50.1515 MHz
: 1 mV* (–47 dBm)
Total Gain B 50M PRE ON
4 - 25
DISPLAY
Push [F-7 (SET)] to set the DRIVE level and
DRIVE
selects the next adjustment item.
Vd48V
Push [F-7 (SET)] to set the Vd meter indication
and selects the next adjustment item.
Push [F-7 (SET)] to set the 0 A meter
Id 0A
indication and selects the next adjustment item.
Id 5A
R o t a t e
the driving current become 5 A.
Push [F-7 (SET)] to set the 5 A meter
indication and selects the next adjustment item
Id 10A R o t a t e
driving current become 10 A.
Push [F-7 (SET)] to set the 10 A meter
indication and selects the next adjustment item
SWR
Push [F-7 (SET)] to set the SWR meter
indication and return to the opening screen.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the HF A total gain and
selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the HF A total gain and
selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the 50 M A total gain
and selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the 50 M A total gain
and selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the HF B total gain and
selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the HF B total gain and
selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the 50 M B total gain
and selects the next adjustment item.
R o t a t e [ M A I N D I A L ] t o s e t 3 0 d B o f
AF level difference between 1 mV and
no signal input from the SSG.
Push [F-7 (SET)] to set the 50 M B total gain
and selects the next adjustment item.
OPERATION
[ M A I N D I A L ] t o
[ M A I N D I A L ] t o s e t
s e t
t h e