Kenwood TK-7180 Service Manual Addendum page 20

TK-7180/7189/8180/8189
TK-7180/7189 Receiver Section
Item Condition
1. Sensitivity 1) Adj item : [SENS1]
adjust Adjust : [✳✳✳]
2) Adj item : [L SENS1] →
[L' SENS1] → [C SENS1] → Oscilloscope
[H' SENS1] → [H SENS1]
Adjust : [✳✳✳]
2. Sensitivity [Panel test mode]
check 1) CH-Sig : 1-1
SSG output
Wide 5k : –116dBm (0.35µV)
(MOD : 1kHz/± 3kHz)
Narrow : –116dBm (0.35µV)
(MOD : 1kHz/± 1.5kHz)
3. Squelch 1) Adj item : [n SQL]
(Preset) Adjust : [✳✳✳]
adjust SSG output : 12dB SINAD level
• Narrow (MOD : 1kHz/± 1.5kHz)
2) Adj item : [nL SQL] →
[nC SQL] → [nH SQL]
Adjust : [✳✳✳]
• Wide 3) Adj item : [w SQL]
Adjust : [✳✳✳]
SSG output : 12dB SINAD level
(MOD : 1kHz/± 3.0kHz)
4) Adj item : [wL SQL] →
[wC SQL] → [wH SQL]
Adjust : [✳✳✳]
4. Low RSSI 1) Adj item : [n LRSSI]
adjust Adjust : [✳✳✳]
• Narrow SSG output : 12dB SINAD level
(MOD : 1kHz/± 1.5kHz)
2) Adj item : [nL LRSSI] →
[nC LRSSI] → [nH LRSSI]
Adjust : [✳✳✳]
• Wide 3) Adj item : [w LRSSI]
Adjust : [✳✳✳]
SSG output : 12dB SINAD level
(MOD : 1kHz/± 3.0kHz)
4) Adj item : [wL LRSSI] →
[wC LRSSI] → [wH LRSSI]
Adjust : [✳✳✳]
20
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG Rear ANT Front
panel panel
AF VTVM EXT. SP
Adjustment
Parts Method
[ ],[ ] Enter the following Note : After replacing the
adjustment values EEPROM (IC401) align
to the transceiver sensitivity.
by pressing [ ] and
[ ] keys.
[L SENS1] : 60
[L' SENS1] : 88
[C SENS1] : 109
[H' SENS1] : 159
[H SENS1] : 192
After setting the
adjustment value,
press [B] key.
The adjustment
value will be stored
in memory.
Check 12dB SINAD or more
After input signal After adjusting SQL, check
from SSG, press [B] SQL open/close.
key. That numeric SSG 12dB SINAD level + 4dB
will be stored in
memory. SSG 12dB SINAD level – 6dB
[nC SQL] MOD 1kHz/± 1.5kHz
[wC SQL] MOD 1kHz/± 3.0kHz
After input signal The following erroneous
from SSG, press [B] performance may occur if any
key. That numeric irregular RSSI adjustment,
will be stored in such as pressing the [B] key
memory. assigned for determination
when it is the ANT OPEN
state, is performed.
• The antenna bar ( ) cannot
• Scan does not stop.
Specifications/Remarks
: Open
: Close
appear correctly.