*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.
Содержание IC-F620
Страница 1: ...SERVICE MANUAL UHF TRANSCEIVER iF610 iF620 iF621...
Страница 27: ...SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT TOP VIEW 9 1 8V 2 8 to microphone 1 7 J1 AFO MICE GND CLO PTT MIC CLI...
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Страница 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13817HZ C1U q C 2002 Icom Inc...