Kenwood TK-6110 Service Manual page 39

Item Condition
14. Sensitivity 1) Sensitivity
SENS_XXX
Adjust the sensitivity.
All values in Low, Center and High AF VTVM
frequencies changes one time. Distortion
2) Select _ _L
SENS_ _75 : K
SENS_ _50 : K2
in tune mode
SSG output : –116dBm/0.35 V
AF output : 0.25 V/4
3) Select _ _C
SENS_130 in tune mode
4) Select _ _H
SENS_230 in tune mode
15. Squelch 1) Squelch tight point
tight point SQ_T_XXX
Adjust the squelch tight point.
All values in Low, Center and High
frequencies changes one time.
2) Select _ _L
SQ_T_XXX in tune mode
SSG output : Value when 7dB
is added from the sensitivity
value of 12dB SINAD.
NB : ON
3) Select _ _C
SQ_T_XXX in tune mode
4) Select _ _H
SQ_T_XXX in tune mode
16. Squelch 1) Squelch open point
open point SQ_O_XXX
Adjust the squelch open point.
All values in Low, Center and High
frequencies changes one time.
2) Select _ _L
SQ_O_XXX in tune mode
SSG output : Value when 3dB
is subtracted from the
sensitivity value of 12dB
SINAD.
NB : ON
3) SSG output : OFF
4) Select _ _C
SQ_O_XXX in tune mode
5) SSG output : OFF
6) Select _ _H
SQ_O_XXX in tune mode
7) SSG output : OFF
17. NB 1) CH-SIG : 1-1
SSG output : –109dBm/0.8 V Pulse
Pulse generator
Output : 0.5Vp-p/50
Cycle : 100 sec
Pulse width : 10ns
NB : ON
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG Rear ANT Front
panel panel
EXT.SP TX-RX L237
(A/3)
meter
Oscilloscope
4 dummy
load
Front
panel
Front
panel
Front
panel
SSG Rear ANT
panel
generator
Distortion EXT.SP
meter
Oscilloscope
AF VTVM
TK-6110
Adjustment
Parts Method
B key SINAD 12dB or more
C key
Low check
Center check
High check
B key Adjust to point of
C key opening squelch
Check Squelch must be closed.
B key Adjust to point of
C key opening squelch
Check Squelch must be closed.
B key Adjust to point of
C key opening squelch
Check Squelch must be closed.
Check SINAD 12dB or more
SSG
Coupler Radio
Pulse
generator
Oscilloscope
Specifications/Remarks
4 load
Distortion
AF VTVM
meter
39