Kenwood TK-6110, Руководство по обслуживанию

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