Kenwood TM-V71A, Руководство по обслуживанию

Страница: 52 / 103

TM-V71A/V71E
52
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
• Band B 5) Frequency: 145.000MHz E,M4
Frequency: 146.000MHz K
Detector: +P HOLD
LPF: 3kHz
HPF: OFF
De-emphasis: OFF
6) PTT: ON
Linear
detector
Oscilloscope Rear
panel ANT Check 0.65~0.85kHz
7) Frequency: 435.000MHz E,M4
Frequency: 444.000MHz K
8) PTT: ON
21 .Protection
Check
• Band A TX Power: High
ANT: Short circuit and Open
1) Frequency: 145.000MHz
E,M4
Frequency: 146.000MHz K
2) PTT: ON
Ammeter Check 12A or less
• Band B 3) Frequency: 435.000MHz E,M4
Frequency: 444.000MHz K
4) PTT: ON
Reciever Section (Refer to the table on pages 44 to 46 for the frequencies which will apply in the adjustment mode.)
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
1. BPF RSSI
(Band A)
Adjust
• 144MHz band 1) Adj item: [BPF A VL] →
[BPF A VC] → [BPF A VH]
Adjust: [
***
]
SSG output: –100dBm (2.24µV)
SSG MOD: 1kHz
SSG DEV: 3kHz
SSG
Oscilloscope
Distortion
meter
AF V.M
Dummy
load Rear
panel ANT
EXT.SP Front
panel Tuning
control Turn the Tuning
control until the
maximum RSSI
value will appear on
the LCD. When the
same RSSI value
remains while it
is being adjusted,
set the adjustment
value to the center
value.
For example, set the
adjustment value
to 38 for the values
listed below.
RSSI
value
Adjustment
value
54 35
55 36
55 37
55 38
55 39
55 40
54 41
• 200MHz band 2) Adj item: [BPF A 2L]
Adjust: [ ***
]
SSG output: –100dBm (2.24µV)
3) Adj item: [BPF A 2C]
Adjust: [ ***
]
SSG output: –90dBm (7.08µV)
4) Adj item: [BPF A 2H]
Adjust: [ ***
]
SSG output: –80dBm (22.4µV)
• 430MHz band 5) Adj item: [BPF A UL]
Adjust: [
***
]
SSG output: –90dBm (7.08µV)
6) Adj item: [BPF A ULD]
→
[BPF A UC] → [BPF A UHD]
→ [BPF A UH]
Adjust: [
***
]
SSG output: –100dBm (2.24µV)