Icom IC-F620 - Page 16

*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
5 - 5
SOFTWARE ADJUSTMENT – continued
Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.
Minimum distortion
level
Push [ENTER] key
on the connected
computer keyboard
to set “S3 level”.
Push [ENTER] key
on the connected
computer keyboard
to set “S1 level”.
Set “SQL level” to
close squelch.
Then set “SQL level”
at the point where
the audio signals
just appears.
1
1
2
1
• Operating freq. : 400.000 MHz [L]
440.000 MHz [M]
480.000 MHz [H]
• IF bandwidth : Wide
• Connect a standard signal generator to
the antenna connector and set as:
Frequency : 400.000 MHz [L]
440.000 MHz [M]
480.000 MHz [H]
Level : 10 µV* (–87 dBm)
Modulation : 1 kHz
Deviation : ±3.5 kHz [N/W]
±2.8 kHz [N/M]
• Receiving
• Operating freq. : 400.000 MHz [L]
440.000 MHz [M]
480.000 MHz [H]
• IF bandwidth : Wide
• Connect an SSG to the antenna con-
nector and set as:
Frequency : 400.000 MHz [L]
440.000 MHz [M]
480.000 MHz [H]
Level : 14 µV* (–84 dBm)
Modulation : 1 kHz
Deviation : ±3.5 kHz [N/W]
±2.8 kHz [N/M]
• Receiving
• Set an SSG as :
Level : 0.45 µV* (–114 dBm)
Modulation : 1 kHz
Deviation : ±3.5 kHz [N/W]
±2.8 kHz [N/M]
• Receiving
• Operating freq. : 415.000 MHz [L]
465.000 MHz [M]
500.000 MHz [H]
• IF bandwidth : Narrow
• Connect an SSG to the antenna con-
nector and set as:
Frequency : 415.000 MHz [L]
465.000 MHz [M]
500.000 MHz [H]
Level : 0.2 µV* (–121 dBm)
Modulation : 1 kHz
Deviation : ±1.75 kHz
• Receiving
RX
SENSITIVITY
[BPF T1] –
[BPF T4]
S-METER
[S-METER]
SQUELCH
LEVEL
[SQL]
MAIN
Rear
panel
Connect a SINAD meter with a
4 Ω load to the external [SP]
jack.
Connect a SINAD meter with a
4 Ω load to the external [SP]
jack.
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
UNIT LOCATION
CONVENIENT:
The BPF T1–BPF T4 can be adjusted automatically.
q-1: Set the cursol to “BPF ALL” on the adjustment program and then push [ENTER] key.
q-2: The connected PC tunes BPF T1–BPF T4 to peak levels.
or
w-1: Set the cursol to one of BPF T1, T2, T3, or T4 as desired.
w-2: Push [ENTER] key to start tuning.
w-3: Repeat w-1 and w-2 to perform additional BPF tuning.