Icom IC-T81E Service Manual page 20

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