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5 - 8
SOFTWARE ADJUSTMENT (continued)
• Select an operation using [
↑
] / [
↓
]keys, then set specifi ed value using [
←
] / [
→
] keys on the connected computer keyboard
• Need to adjust "S-METER ADJUSTMENT" after "RX SENSITIVITY ADJUSTMENT" is adjusted.
Otherwise , "S-METER ADJUSTMENT" will not be adjusted properly.
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
UNIT
LOCATION
RX
SENSITIVITY
[BPF T1]
[BPF T2]
(Analog)
1
• Operating CH
: CH 13
PC
screen
Connect the SINAD meter with
an 4
Ω
load to the [EXT SP]
jack.
Minimum distortion
level
• Connect the SSG to the antenna connec-
tor and set as:
Frequency
Level
Modulation
Deviation
• Receiving
: 136.000 MHz
: 10 µV* (–87 dBm)
: 1 kHz
:
±
3.5 kHz
CONVENIENT:
The BPF T1, BPF T2 can be adjustment automatically.
q
-1: Set the cursor to "BPF ALL" and then push [ENTER] key.
q
-2: The connected PC tunes BPF T1, T2 to peak levels.
or
w
-1: Set the cursor to one of BPF T1, T2 as desired.
w
-2: Push [ENTER] key to start tuning.
w
-3: Repeat
w
-1 and
w
-2 to perform additional BPF tuning.
Digital RSSI
[Dig RSSI]
(IC-F1721D/
F1821D only)
1
• Operating CH.
: CH 12
Push the [ENTER] key on the connected computer's keyboard
to set "Dig RSSI" level.
• Connect the SSG to the antenna connec-
tor and set as:
Frequency
Level
Modulation
• Receiving
: 136.000 MHz
: 0.18 µV* (–122 dBm)
: No modulation
S-METER
[RSSI]
1
• Operating CH.
: CH 13
Push the [ENTER] key on the connected computer's keyboard
to set "S3" level.
• Connect the SSG to the antenna connec-
tor and set as:
Frequency
Level
Modulation
Deviation
• Receiving
: 136.000 MHz
: 14 µV* (–84 dBm)
: 1 kHz
:
±
3.5 kHz
2
• Set the SSG as:
Level
• Receiving
: 0.45 µV* (–114 dBm)
Push the [ENTER] key on the connected computer's keyboard
to set "S1" level.
SQUELCH
LEVEL
[SQL]
1 • Operating CH.
: CH 2
Rear
panel
Connect speaker to the [EXT
SP] jack.
Set SQL level to
close squelch.
Then set SQL level
at the point where
the audio signals
just appears.
• Connect the SSG to the antenna connec-
tor and set as:
Frequency
Level
Modulation
Deviation
• Receiving
: 136.000 MHz
: 0.2 µV* (–121 dBm)
: 1 kHz
:
±
3.5 kHz
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.