Kenwood TK-3260EX, Service Manual

Page: 12 / 14

TK-3260EX
12
Receiver.Section
Item Condition
Measurement Adjustment
Specifications./.Remarks
Test.equipment Terminal Parts Method
1. Sensitivity
Check
[Wide 5k]
1) TEST CH: Low, Low’, Center,
High’, High (5 points
SSG output
: –118dBm (0.28
μ
V)
SSG MOD: 3.0kHz
SSG
DVM
Oscilloscope
AF VTVM
ANT
SP/MIC
connector
FPU Check 12dB SINAD or more
[Wide 4k] 2) TEST CH: Center
SSG output
: –117dBm (0.32
μ
V)
SSG MOD: 2.4kHz
[Narrow] 3) TEST CH: Center
SSG otuput
: –115dBm (0.4
μ
V)
SSG MOD: 1.5kHz
2. Squelch Open
Writing
[Wide 5k] 1) TEST CH: Center
SSG output
: 12dB SINAD –1dB level
SSG MOD: 3.0kHz SSG
DVM
Oscilloscope
AF VTVM
ANT
SP/MIC
connector
FPU Write Squelch open
[Wide 4k] 2) TEST CH: Center
SSG output
:12dB SINAD –1dB level
SSG MOD: 2.4kHz
[Narrow] 3) TEST CH: Center
SSG output
: 12dB SINAD –0.5dB level
SSG MOD: 1.5kHz
3. Squelch Tight
Writing
[Wide 5k] 1) TEST CH: Center, Low, High
(3 points)
SSG output
: 12dB SINAD +4.5dB level
SSG MOD: 3.0kHz
[Wide 4k] 2) TEST CH:Center
SSG output
:12dB SINAD +4.5dB level
SSG MOD: 2.4kHz
[Narrow] 3) TEST CH:Center
SSG otuput
: 12dB SINAD +4.5dB level
SSG MOD: 1.5kHz
4. Low RSSI
Writing
[Wide 5k] 1) TEST CH: Center, Low, High
(3 points)
SSG output
: –121dBm (0.2
μ
V)
ANT Write
[Wide 4k] 2) TEST CH: Center
SSG output
: –121dBm (0.2
μ
V)
[Narrow] 3) TEST CH: Center
SSG output
: –121dBm (0.2
μ
V)
5. High RSSI
Writing
[Wide 5k] 1) TEST CH: Center,
SSG output
: –70dBm (70.8
μ
V)
SG
DVM
Oscilloscope
AF VTVM
ANT FPU Write
[Wide 4k] 2) TEST CH: Center
SSG output
: –70dBm (70.8
μ
V)
[Narrow] 3) TEST CH: Center
SSG output
: –70dBm (70.8
μ
V)