73
ADJUSTMENT
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
TK-890/
(
B
)
/H
(
B
)
9. Maximum
1) Select _ _L
Power meter Rear
ANT
Panel
PF3 key Wide
±
4.1kHz
±
0.1kHz
deviation
MXDV_XXX
Deviation
PF4 key
• Wide
in tune mode
meter
PTT : ON
AF VTVM
Panel
MIC
Deviation meter filter
AG
HPF : OFF
Oscilloscope
LPF : 15kHz
De-emphasis : OFF
AG : 1kHz/50mV
2) Select _ _C
MXDV_XXX
in tune mode
PTT : ON
3) Select _ _H
MXDV_XXX
in tune mode
PTT : ON
• Narrow
1) Up/down knob : Set the narrow
Narrow
±
2.05kHz
±
0.05kHz
n_L
MXDV_XXX in tune mode
PTT : ON
2) Select n_C
MXDV_XXX
in tune mode
PTT : ON
3) Select n_H
MXDV_XXX
in tune mode
PTT : ON
10. MIC
1) CH-SIG : 1-1
TX-RX
VR501 Check
2.75~3.25kHz
sensitivity
PTT : ON
(B/3)
Wide only
Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
AG : 1kHz/5mV
11. DQT
1) CH-SIG : 1-2
Panel
PF3 key Wide/Narrow
Flat the a parts.
balance
Select BLNC_XXX
PF4 key Make the
in tune mode
demodulation wave-
PTT : ON
form neat.
Deviation meter filter
HPF : OFF
LPF : 3kHz
De-emphasis : OFF
2) Up/down knob : Set the narrow
n_ _
BLNC_XXX in tune mode
PTT : ON
A
A
Содержание TK-890/(B)
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Страница 96: ...TK 890 B H B TK 890 B H B BLOCK DIAGRAM 119 ...