Kenwood TK-2170ST Service Manual page 48

TK-2170/2170ST
Receiver Section
Item Condition
1. Sensitivity 1) Adj item : [SENS_]
adjust Adjust : [✳✳✳]
2) Adj item : [S.ENS_] →
[S.E.NS_] → [S.E.N.S_] →
[S.E.N.S._] → [S.E.N.S._.]
Adjust : [✳✳✳]
SSG output : –103dBm (1.58µV)
(MOD : 1kHz/± 1.5kHz)
2. Sensitivity [Panel test mode]
check 1) CH-Sig : 1-1
SSG output
Wide : –117dBm (0.32µV)
(MOD : 1kHz/± 3kHz)
Narrow : –116dBm (0.35µV)
(MOD : 1kHz/± 1.5kHz)
3. Squelch 1) Adj item : [SQL_ _]
(Preset) Adjust : [✳✳✳.]
adjust SSG output : –119dBm (0.25µV)
• Narrow (MOD : 1kHz/± 1.5kHz)
• Wide 2) Adj item : [SQL_ _]
Adjust : [✳✳✳]
SSG output : –120dBm (0.22µV)
(MOD : 1kHz/± 3.0kHz)
4. Low RSSI 1) Adj item : [LRSSI]
adjust Adjust : [✳✳✳.]
• Narrow SSG output : –118dBm (0.28µV)
(MOD : 1kHz/± 1.5kHz)
2) Adj item : [L.RSSI] →
[L.R.S.SI] → [L.R.S.S.I.]
Adjust : [✳✳✳.]
5. Squelch 1) Adj item : [SQLT_]
(Tight) Adjust : [✳✳✳.]
adjust SSG output : –115dBm (0.4µV)
• Narrow (MOD : 1kHz/± 1.5kHz)
• Wide 2) Adj item : [SQLT_]
Adjust : [✳✳✳]
SSG output : –116dBm (0.35µV)
(MOD : 1kHz/± 3.0kHz)
6. High RSSI 1) Adj item : [HRSSI]
adjust Adjust : [✳✳✳.]
• Narrow SSG output : –70dBm (70.8µV)
(MOD : 1kHz/± 1.5kHz)
2) Adj item : [H.RSSI] →
[H.R.S.SI] → [H.R.S.S.I.]
Adjust : [✳✳✳.]
48
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG Panel ANT Panel
AF VTVM SP/MIC
Oscilloscope
Panel
Adjustment
Parts Method
Selector Adjust for Rotate the selector knob and
knob RSSI MAX increase the adjustment value
starting from "1" to obtain
RSSI MAX.
Check 13dB 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.
After input signal
from SSG, press [B]
key. That numeric
will be stored in
memory.
After input signal After adjusting SQL, check
from SSG, press [B] SQL open/close.
key. That numeric SSG –113dBm : Open
will be stored in SSG OFF : Close
memory.
After input signal
from SSG, press [B]
key. That numeric
will be stored in
memory.
Specifications/Remarks