TK-90
74
1. Setting
1) Connect the DC cord to the
DC power supply.
DC IN : DC 13.6V
2. Checksum
1) Menu No. : 46
Check
Checksum appears.
3. Display test
1) Menu No. : 47
Check
LCD all segments light.
1. LO2
1) Display f. : 13.200MHz
f. counter
TX-RX
LO2
Check
62.40000MHz
(62.4MHz)
Mode : USB
frequency
Disconnect the cable from
Note :
Do not make the
LO2 and insert a cable from
LO2 (62.4MHz) frequendy
the frequency counter.
adjustment.
After the adjustment,
connect the cable to LO2.
2. LO2 level
1) Display f. : 13.200MHz
Spectrum
TX-RX
L731
Level max.
–15dBm or more
Mode : USB
analyzer
L729
±
15.6MHz spurious
60dBc or less
Disconnect the cable from
minimum
LO2 and insert a cable from
the spectrum analyzer.
After the adjustment,
connect the cable to LO2.
3. Lock voltage 1) VCO1
DC V.M
CV
TX-RX
TC703 4.20V
±
0.05V
Display f. : 14.999MHz
Mode : USB
Display f. : 30.000kHz
Check
0.2~1.0V
2) VCO2
TX-RX
TC702 4.20V
±
0.05V
Display f. : 30.000MHz
Mode : USB
Display f. : 14.500MHz
Check
0.2~1.0V
Common Section
Item
Condition
Measurement
Adjustment
Specifications/Remarks
Test-
equipment
Unit
Terminal
Parts
Unit
Method
PLL Section
Item
Condition
Measurement
Adjustment
Specifications/Remarks
Test-
equipment
Unit
Terminal
Parts
Unit
Method
ADJUSTMENT
Test cable for microphone input (E30-3360-08)
3
2
4
5
6
7
8
3
1
2
4
5
6
7
8
1
GREEN
RED
BLACK
BLUE
SHIELD
WHITE
GRAY
YELLOW
PTT
GND
BLC
SB
ME
MIC
RXD1
DM
Tuning cable (E30-3383-05)
Adapter cable (E30-3383-05) is required for
injecting an audio if PC tuning is used.
See “PC Mode” section for the connec-
tion.
Lead wire +
MIC
Shield wire –
