Icom IC-F41GS, Руководство по обслуживанию

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5 - 8
*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
NOTE:
After “RX SENSITIVITY” adjustment is finished, “S-METER (or RSSI L0/L2—[MPT])” adjustment
(at page 5-9) must be re-adjusted.
SOFTWARE ADJUSTMENT – continued
Select an operation using [
↑
] / [
↓
] keys, then set specified value using [
←
] / [
→
] keys on the connected computer keyboard.
0.70 kHz [Wide]
0.35 kHz [Narrow]
Minimum distortion
level
1
1
• Operating freq. : 400.000 MHz [L]
440.000 MHz [ML]
450.000 MHz [MH]
480.000 MHz [H]
• Output power : Low1
• CTCSS
: 88.5 Hz
• DTCS code : 007
• Set the FM deviation meter as:
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector
: (P–P)/2
• No audio applied to the [MIC] input.
• Transmitting
• Operating freq. : 400.000 MHz [L]
440.000 MHz [ML]
450.000 MHz [MH]
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 [ML]
450.000 MHz [MH]
480.000 MHz [H]
Level : 10 µV* (–87 dBm)
Modulation : 1 kHz
Deviation : ±3.5 kHz
• Receiving
CTCSS/DTCS
DEVIATON
[CTCS/DTCS]
RX
SENSITIVITY
[BPF T1] –
[BPF T4]
Top
panel
MAIN
Connect an FM deviation meter
to the antenna connector
through the attenuator.
Connect a SINAD meter with an
8
Ω
load to the multi connector
through the JIG cable (*OPC-
966).
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.