Icom IC-F3GT Marine Radio User Manual


 
5 - 7
Minimum distortion
level
12 dB SINAD
At the point where
the audio signals
just appears.
1
• Operating frequency:
400.000 MHz
A
440.000 MHz B
470.000 MHz C
490.000 MHz D, E
• Connect a standard signal generator to
the antenna connector and set as:
Frequency : 400.000 MHz
A
440.000 MHz B
470.000 MHz C
490.000 MHz D, E
Level :
10 µV* (–87 dBm
)
Modulation : 1 kHz
Deviation : ±3.5 kHz*
1
±2.8 kHz ˜
±1.75 kHz*
2
ˆ
• Receiving
• Operating frequency:
400.000 MHz
A
440.000 MHz B
470.000 MHz C
490.000 MHz D, E
• Connect a standard signal generator to
the antenna connector and set as:
Frequency : 400.000 MHz A
440.000 MHz B
470.000 MHz C
490.000 MHz D, E
Level : 0.2 µV* (–121 dBm)
Modulation : 1 kHz
Deviation : ±3.5 kHz*
1
±2.8 kHz ˜
±1.75 kHz*
2
ˆ
• Receiving
• Receiving
RX
SENSITIVITY
[BPF T1] –
[BPF T4]
SQUELCH
LEVEL
[SQL]
Top
panel
Top
panel
Connect a SINAD meter with an
8 load to the [SP] jack.
Connect a SINAD meter with an
8 load to the [SP] jack.
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
UNIT
LOCATION
*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
SOFTWARE ADJUSTMENT – continued
Select an operation using [] / [] keys, then set specified value using [] / [] keys on the connected computer keyboard.
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.
1
2
A: 400–430 MHz B: 440–470 MHz C: 470–500 MHz D: 490–512 MHz E: 490–520 MHz
ˆ: N-type : W-type ˜: M-type
*
1,
*
2
W/N-type must be set the standard signal generator deviation level both *
1
and *
2
on the RX SENSITIVITY AND SQUELCH
LEVEL ADJUSTMENTS.