Icom ID-51A Service Manual - Page 29

Receive Adjustments, Receive, Sensitivity, Receive Sensitivity, S-meter, S-meter S3 Level

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5-3 TRANSMIT ADJUSTMENT (Continued) 5-4 RECEIVE ADJUSTMENTS 1) Select an adjustment item (band) using /. 2) Set the SSG as specified (frequency, deviation and output level), and then push to automatically adjust. ADJUSTMENT ADJUSTMENT ITEM OPERATION VALUE RECEIVE SENSITIVITY [A-BAND] (137.02 MHz) (145.02 MHz) (173.98 MHz) (380.02 MHz) (435.02 MHz) NOTE: "RECEIVE SENSITIVITY" must be adjusted before "S-METER." Otherwise, "S-METER" will not be adjusted properly. - [VTL] [VTM] [VTH] [UTL] [UTM] 1 1) Set the power supply voltage to 7.4 V. 2 2) Connect an SSG to the antenna connector, and then set it as; Frequency : (Displayed on the function display) 3 Level : -10 dBµ (-117 dBm)† 4 Modulation : 1 kHz Deviation : 3.5 kHz 5 6 - Push . (Automatic adjustment) (478.98 MHz) [UTH] 7 [AIR BAND] (108.02 MHz) (127.02 MHz) (136.95 MHz) - [ATL] [ATM] [ATH] 1 1) Set the power supply voltage to 7.4 V. 2 2) Connect an SSG to the antenna connector, and then set it as; Frequency : (Displayed on the function display) 3 Level : -10 dBµ (-117 dBm)† 4 Modulation : 1 kHz Deviation : 30% (AM) - Push . (Automatic adjustment) [B-BAND] (137.02 MHz) (145.02 MHz) (173.98 MHz) (380.02 MHz) (435.02 MHz) - [VTL] [VTM] [VTH] [UTL] [UTM] 1 1) Set the power supply voltage to 7.4 V. 2) Connect an SSG to the antenna connector, and then set it as; Frequency : (Displayed on the function display) 2 Level : -10 dBµ (-117 dBm)† 3 Modulation : 1 kHz Deviation : 3.5 kHz 4 5 - Push . (Automatic adjustment) (478.98 MHz) [UTH] 6 S-METER [BC BAND] NOTE: "RECEIVE SENSITIVITY" must be adjusted before "S-METER" and "S-METER S3 LEVEL." Otherwise, "S-METER" and "S-METER S3 LEVEL will not be adjusted properly. 1 1) Set the power supply voltage to 7.4 V. - 2) Connect an SSG to the antenna connector and set it as; - Modulation : 1 kHz Deviation : 30% (AM) (AM S0 level) [BS0] 2 • Set the SSG as; Frequency : (Displayed on the function display) Level : +2 dBµ (-105 dBm)† (AM S3 level) [BS3] 3 • Set the SSG as; Level : +5 dBµ (-102 dBm)† (AM Full scale) (WFM S0 level) [BSF] [BS0] 4 • Set the SSG as; Frequency : (Displayed on the function display) Level : +12 dBµ (-95 dBm)† 5 • Set the SSG as; Frequency : (Displayed on the function display) Level : +2 dBµ (-105 dBm)† Push . (Automatic adjustment) (WFM S3 level) [BS3] 6 • Set the SSG as; Frequency : (Displayed on the function display) Level : +5 dBµ (-102 dBm)† (WFM Full scale) 7 • Set the SSG as; [BSF] Frequency : (Displayed on the function display) Level : +12 dBµ (-95 dBm)† †; This output level of a standard signal generator (SSG) is indicated as SSG's open circuit. 5 - 11

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5-4 RECEIVE ADJUSTMENTS
1) Select an adjustment item (band) using
/
.
2)
Set the SSG as specified (frequency, deviation and output level), and then push
to automatically adjust.
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION
VALUE
RECEIVE
SENSITIVITY
[A-BAND]
NOTE:
“
RECEIVE SENSITIVITY
” must be adjusted before “
S-METER
.” Otherwise, “
S-METER
” will
not be adjusted properly.
–
1
1)
Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector, and then set it as;
Frequency
: (Displayed on the function display)
Level
: –10 dBμ (–117 dBm)
†
Modulation
: 1 kHz
Deviation
: 3.5 kHz
–
(137.02 MHz)
[VTL]
2
Push
.
(Automatic
adjustment)
(145.02 MHz)
[VTM]
3
(173.98 MHz)
[VTH]
4
(380.02 MHz)
[UTL]
5
(435.02 MHz)
[UTM]
6
(478.98 MHz)
[UTH]
7
[AIR BAND]
–
1
1)
Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector, and then set it as;
Frequency
: (Displayed on the function display)
Level
: –10 dBμ (–117 dBm)
†
Modulation
: 1 kHz
Deviation
: 30% (AM)
–
(108.02 MHz)
[ATL]
2
Push
.
(Automatic
adjustment)
(127.02 MHz)
[ATM]
3
(136.95 MHz)
[ATH]
4
[B-BAND]
–
1
1)
Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector, and then set it as;
Frequency
: (Displayed on the function display)
Level
: –10 dBμ (–117 dBm)
†
Modulation
: 1 kHz
Deviation
: 3.5 kHz
–
(137.02 MHz)
[VTL]
Push
.
(Automatic
adjustment)
(145.02 MHz)
[VTM]
2
(173.98 MHz)
[VTH]
3
(380.02 MHz)
[UTL]
4
(435.02 MHz)
[UTM]
5
(478.98 MHz)
[UTH]
6
S-METER
[BC BAND]
NOTE:
“
RECEIVE SENSITIVITY
” must be adjusted before “
S-METER
” and “
S-METER S3 LEVEL
.” Other-
wise,
“
S-METER
” and “
S-METER S3 LEVEL
will not be adjusted properly.
–
1
1)
Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector and set it as;
Modulation
: 1 kHz
Deviation
: 30% (AM)
–
(AM S0 level)
[BS0]
2
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: +2 dBμ (–105 dBm)
†
Push
.
(Automatic
adjustment)
(AM S3 level)
[BS3]
3
• Set the SSG as;
Level
: +5 dBμ (–102 dBm)
†
(AM Full scale)
[BSF]
4
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: +12 dBμ (–95 dBm)
†
(WFM S0 level)
[BS0]
5
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: +2 dBμ (–105 dBm)
†
(WFM S3 level)
[BS3]
6
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: +5 dBμ (–102 dBm)
†
(WFM Full scale)
[BSF]
7
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: +12 dBμ (–95 dBm)
†
†
; This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.