Kenwood TK-8180, Service Manual

Page: 48 / 91

TK-8180/8189
48
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment
Unit Terminal Parts Unit Method
ADJUSTMENT
1. Sensitivity 1) Adj item : [SENS1] SSG Rear ANT Front [ ],[ ] Enter the following Note : After replacing the
adjust Adjust : [
✳✳✳
] panel panel adjustment values EEPROM (IC401) aline
2) Adj item : [L SENS1]
→
AF VTVM EXT. SP to the transceiver sensitivity.
[L’ SENS1]
→
[C SENS1]
→
Oscilloscope by pressing [ ] and
[H’ SENS1]
→
[H SENS1] [ ] keys.
Adjust : [
✳✳✳
] [L SENS1] : 95
[L’ SENS1] : 123
[C SENS1] : 151
[H’ SENS1] : 173
[H SENS1] : 195
After setting the
adjustment value,
press [B] key.
The adjustment
value will be stored
in memory.
2. Sensitivity [Panel test mode] Check 12dB SINAD or more
check 1) CH-Sig : 1-1
SSG output
Wide 5k : –116dBm (0.35
µ
V)
(MOD : 1kHz/
±
3kHz)
Narrow : –116dBm (0.35
µ
V)
(MOD : 1kHz/
±
1.5kHz)
3. Squelch 1) Adj item : [n SQL] After input signal After adjusting SQL, check
(Preset) Adjust : [
✳✳✳
] from SSG, press [B] SQL open/close.
adjust SSG output : 12dB SINAD level key. That numeric SSG 12dB SINAD level + 4dB
• Narrow (MOD : 1kHz/
±
1.5kHz) will be stored in : Open
memory. SSG 12dB SINAD level – 6dB
2) Adj item : [nL SQL]
→
: Close
[nC SQL]
→
[nH SQL] [nC SQL] MOD 1kHz/
±
1.5kHz
Adjust : [
✳✳✳
] [sC SQL] MOD 1kHz/
±
2.4kHz
[wC SQL] MOD 1kHz/
±
3.0kHz
• Wide 4k 3) Adj item : [s SQL]
Adjust : [
✳✳✳
]
SSG output : 12dB SINAD level
(MOD : 1kHz/
±
2.4kHz)
4) Adj item : [sL SQL]
→
[sC SQL]
→
[sH SQL]
Adjust : [
✳✳✳
]
• Wide 5k 5) Adj item : [w SQL]
Adjust : [
✳✳✳
]
SSG output : 12dB SINAD level
(MOD : 1kHz/
±
3.0kHz)
6) Adj item : [wL SQL]
→
[wC SQL]
→
[wH SQL]
Adjust : [
✳✳✳
]
Receiver Section