Adjustment
1) Required Test Equipment
1. Regulated
Supply voltage:
Current:
Standard voltage:
2. Frequency Counter
Measurable frequency:
Measurements stability:
3. Power Meter
Measurable frequency:
Impedance:
Measuring range:
4. Linear Detector
Measurable frequency:
Characteristics:
CN:
Power Supply
2v to 15v
2A or more.
13.w
Up to
1GHz
0.2ppm
Up to
50~2,
Full scale of
Up to
Flat
60dB or more.
or so
500MHz.
unbalanced.
5OOMHz.
1OOW
or so.
6. Oscilloscope
Measurable frequency: DC to
7. AF Voltmeter
Measurable frequency:
Maximum sensitivity:
50Hz
to 1 MHz.
1mV
or more.
8. Spectrum Analyzer
Measuring range:
DC to
9. SSG
1GHz
Maximum frequency:
output:
Output Impedance:
or more.
-2OdB/O.l pV
50R,
unbalanced.
10. Dummy Load
Impedance:
Dissipation:
822
1OOW
or more.
30MHz.
2GHz
or more.
to
120dB/l
V.
5. Digital Multimeter
Voltage range:
Input resistance:
FS=l6Vorso.
1MQ
or more.
11. Distortion Meter
Measurable frequency:
Input level:
30Hz
50mV to
to
100KHz.
1OV
rms.
2) Adjustment for
TX-RX Common Adjustment
I I
Item
Condition
DJ580TlTD
I
Measurement
Test-equipment
Termina I
Adjustment
Unit
Parts Method
Specifications/
Remarks
Backup
Voltage
Power off
PLL Adjustment
Item
UHF TX
VCG
UHF RX
VCO
VHF VCO
I
I
c
1
I4
I
Condition
Frequency:
45.00MHz
PT-T
ON
Power: Middle
Frequency:
45.00MHz
Frequency:
145.00MHz
Digital multimeter
1 !$I!. 1 1
I
Measurement
Test-equipment
Frequency Counter ANT
Digital multimeter
Digital multimeter
Digital multimeter
Termina I
TPl
TPl
TP2
I
Unit
E
u-VCG
u-vco
v-VCG
ICheck 12.6Vor
Adjustment
Parts Method
TC406
L433
+
L432
L441
I
more
ipecificationsr
Remarks
44500000MH
2
1.5 -
1.7v
1.8 -
2.2v
I
RX Ad’ustment
Item
r-l
Freq: 445.05MHz
Receive
Sensitivity
S Meter
SSG mod:
Power Supply
Voltage: 6V
Freq: 145.05MHz
SSG mod:
Power Supply
Voltage: 6V
Freq: 445.05MHz
SSG output:
Freq: 145.05MHz
SSG output: 15dBuV
Condition
1KHz
1KHz
15dB uV
(EMF)
(EMF)
T
L
Measurement
Test-equipment
SSG
Oscilloscope
AF Voltmeter
Distortion meter
‘ermina
SP
T
Unit
Fu=
RF
IF
IF
Adjustment
Parts
TC401
TC405
L422,
L424
L428
VR103
VR104
Met hod
12dB
SINAD:
MAX
12dB
SINAD:
MAX
Full
Full
ipecifications,
Remarks
12dB
SINAD
-7.5dbuV
(EMF)
12dB
SINAD
-7.5dbuV
EMF)
+lO
...
+25d B
u’.’
(EMF)
+lO
-
+25dBuV
(EMF)
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