Kenwood TK-2180 Service Manual page 36

TK-2180
Item Condition
20. BATT [Panel test mode]
detection 1) CH-Sig : 1-1
check BATT terminal voltage : 6.6V
Connect "S" terminal to GND.
PTT : ON
2) BATT terminal voltage : 5.8V
Connect "S" terminal to GND.
PTT : ON
Receiver Section
Item Condition
1. Sensitivity 2 1) Adj item : [L SENS2] →
[L' SENS2] → [C SENS2] →
fixed value
[H' SENS2] → [H SENS2]
write
2. Sensitivity 1 1) Adj item : [SENS1]
adjust Adjust : [✳✳✳]
2) Adj item : [L SENS1] →
[L' SENS1] → [C SENS1] →
[H' SENS1] → [H SENS1]
Adjust : [✳✳✳]
SSG output
: –118dBm (0.28µV)
(MOD : 1kHz/± 1.5kHz)
3. Sensitivity [Panel test mode]
check 1) CH-Sig : 1-1
SSG output
Wide 5k
: –117dBm (0.32µV)
(MOD : 1kHz/± 3kHz)
Narrow
: –117dBm (0.32µV)
(MOD : 1kHz/± 1.5kHz)
4. Squelch 1) Adj item : [n SQL]
(Preset) Adjust : [✳✳✳]
adjust SSG output : –118dBm (0.28µV)
• Narrow (MOD : 1kHz/± 1.5kHz)
2) Adj item : [nL SQL] →
[nC SQL] → [nH SQL]
Adjust : [✳✳✳]
36
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power meter Panel ANT Panel
DVM BATT
terminal
S – +
Measurement
Test-
Unit Terminal Unit
equipment
SSG Panel ANT Panel
AF VTVM Universal
Oscilloscope connector
Panel
Adjustment
Parts Method
Check The transceiver can transmit
without causing the LED to
blink.
The transceiver should not
transmit and LED blinking.
Adjustment
Parts Method
Selector Write the value as followings
knob [L SENS2] : "1"
[L' SENS2] : "20"
[C SENS2] : "70"
[H' SENS2] : "70"
[H SENS2] : "70"
Adjust for Rotate the selector knob and
12dB SINAD increase the adjustment value
starting from "1" to obtain
SINAD 12dB.
Check 12dB SINAD or more
Selector After input signal After adjusting SQL, check
knob from SSG, press [B] SQL open/close.
key. That numeric SSG –118dBm : Open
will be stored in SSG OFF : Close
memory. [nC SQL] MOD 1kHz/± 1.5kHz
[sC SQL] MOD 1kHz/±2.4kHz
[wC SQL] MOD 1kHz/± 3.0kHz
Specifications/Remarks
Specifications/Remarks