Icom IC-T81A, Руководство по обслуживанию

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5 - 6
RECEIVER ADJUSTMENT (Continued)
The following adjustment must be performed on the normal mode after “SENSITIVITY ADJUSTMENT” in SECTION 5-3.
*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.
S-METER
(50 MHz band)
(WFM band)
(144 MHz band)
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
ADJUSTMENT
UNIT LOCATION
1
2
3
4
5
6
7
8
• Displayed frequency :
51.000 MHz [EUR], [UK], [ITA]
52.000 MHz
[AUS], [SEA], [USA-1]
• Connect the SSG to the antenna
connector and set as:
Level : 1 µV
*
(– 107 dBm)
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Connect a terminator to the [SP]
jack.
• Receiving
• Set an SSG output level for the
S-meter to S3.
• Receiving
• Increase an SSG output level.
• Receiving
• Displayed frequency :
92.000 MHz [SEA], [USA-1]
98.000 MHz
[EUR], [UK],[ITA], [AUS]
• Connect the SSG to the antenna
connector and set as:
Level : 2 µV
*
(– 101 dBm)
Modulation : 1 kHz
Deviation : ± 52.5 kHz
• Connect a terminator to the [SP]
jack.
• Receiving
• Increase an SSG output level.
• Receiving
• Displayed frequency :
145.000 MHz [EUR], [UK]
146.000 MHz
[ITA], [AUS], [SEA], [USA-1]
• Connect the SSG to the antenna
connector and set as:
Level : 0.5 µV
*
(– 113 dBm)
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Connect a terminator to the [SP]
jack.
• Receiving
• Set an SSG output level for the
S-meter to S3.
• Receiving
• Increase an SSG output level.
• Receiving
Top
panel
Front
panel
Top
panel
Front
panel
Top
panel
SSG
Front
panel
S-meter
S-meter
Output level
S-meter
0.56 µV – 1.8 µV
(-112dBm – -102 dBm)
Full scale
Full scale
0.28 µV – 0.89 µV
(-118dBm – -108 dBm)
Full scale
Push and hold
the [SQL] key
Verify
Verify
Push and hold
the [SQL] key
Verify
Push and hold
the [SQL] key
Verify
Verify