ADJUSTMENT
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
70
TK-890/
(
B
)
/H
(
B
)
Common Section
1. Frequency
• Frequency range (MHz)
list
K : 450~490 (TK-890/(B), 890H(B))
K2 : 480~512 (TK-890(B))
K3 : 403~430 (TK-890(B))
• Adjustment frequency (MHz)
• Signalling
2. Setting
• Receiver section
• Transmitter section
The indicated SSG output level are for maximum output.
Whenever there is no modulation desingnation,
standard modulation (MOD : 1kHz, DEV : 3kHz (Wide),
DEV : 1.5kHz (Narrow)) is indicated.
Connect the front panel (KCH-10) to the transceiver's body.
3. PLL lock
1) CH-SIG : 3-1
K
DC VM
TX-RX
CV
TX-RX
A (TC302) 1.5V
±
0.1V
voltage
CH-SIG : 10-1
K2,K3
Power meter (A/3)
(A/3)
2) CH-SIG : 9-1
K,K2
B (TC303)
CH-SIG : 11-1
K3
3) CH-SIG : 3-1
K,K2
C (TC301)
CH-SIG : 11-1
K3
PTT : ON
4) CH-SIG : 2-1
K
Check
8.0V or less
CH-SIG : 11-1
K2
CH-SIG : 7-1
K3
5) CH-SIG : 7-1
K
CH-SIG : 1-1
K2,K3
6) CH-SIG : 2-1
K,K3
CH-SIG : 11-1
K2
PTT : ON
4
Ω
dummy load
AF VTVM
Oscilloscope
Distortion meter
SSG
ACC
(SP)
ANT
AG
AF VTVM
MIC
PTT
Power meter
Coupler
Deviation
meter
Frequency
counter
ANT
–
+
–
+
+
–
Ammeter
Power
supply
DC IN
CH No.
Encode tone
Decode tone
1
None
None
2
100Hz square wave
None
3
QT 67.0Hz
QT 67.0Hz
4
QT 151.4Hz
QT 151.4Hz
5
QT 250.3Hz
QT 250.3Hz
6
DQT 023N
DQT 023N
7
Single tone 1633Hz
2 tone 321.7/928.1Hz
8
DTMF [9]
DTMF [159]
9
MSK
None
K
K2
K3
CH
TX
RX
TX
RX
TX
RX
1
470.000 460.100 496.000 490.100 416.500 420.100
2
450.000 450.100 480.000 480.100 403.000 410.100
3
490.000 469.900 512.000 499.900 430.000 429.900
4
460.000 460.000 490.000 490.000 420.000 420.000
5
460.200 460.200 490.200 490.200 420.200 420.200
6
460.400 460.400 490.400 490.400 420.400 420.400
7
470.000 470.100 492.000 492.100 403.000 403.100
8
480.000 480.100 502.000 502.100 413.000 413.100
9
490.000 489.900 512.000 511.900 423.000 422.900
10
490.000 489.900 420.000 419.900
11
470.000 470.100 440.000 439.900
Содержание TK-890/(B)
Страница 80: ...TK 890 B H B TK 890 B H B 79 WIRING ...
Страница 96: ...TK 890 B H B TK 890 B H B BLOCK DIAGRAM 119 ...