Kenwood TS-130S Service Manual page 32

32
ADJUSTMENTS
GENERAL
Adjustment procedures for this transceiver are classified into
formal adjustments requiring a full service bench and
simplified adjustment using a VTVM, AF and RF VITVM, AG,
and AF and RF dummy load.
Complete frequency counter,
adjustment also requires a
SSG, sweep generator, etc.
TEST EQUIPMENT REQUIRED
1. VTVM or DVM
1) Input resistance: More than 1MQ
2) Voltage range: 1.5 to 1000V AC/DC
NOTE : A high-precision voltmeter may be used. However, accu-
rate readings can not be obtained for high-impedance circuits.
2. DC current meter
100mA, 200mA, 2A, 10A, High-precision
current meter may be used.
1) Current range:
3. RF VTVM
1) Input impedance: 1MQ and less than 3 pF, min.
2) Voltage range: 10mV to 300V
3) Frequency range: 50MHz or greater
NOTE: During adjustment special accuracy is not required (such as
input level or PLL circuit carrier oscillator output), a VTVM or
VOM may substitute for an RF VTVM by measuring through the
output of a detector as shown in item 14.
4. AF VTVM
1) Frequency range: 50Hz to 10kHz
2) Input resistance: 1M or greater
3) Voltage range: 10mV to 30V
5. AF GENERATOR (AG)
1) Frequency range: 200Hz to 5kHz
2) Output: 2mV~1V, low distortion
6. AF DUMMY LOAD
1) Impedance: 82
2) Dissipation: 3W or greater
7. REF DUMMY LOAD
1) Impedance: 502, 1502
2) Dissipation: 100W continuous or greater
3) Frequency limits: 1.8 to 30MHz
The above-mentioned instruments may be used for simplified
adjustment. For complete, precise adjustment, the following instru-
ments are also necessary.
8. OSCILLOSCOPE
Requires high sensitivity, and external synchronization capability.
9. SWEEP GENERATOR
1) Center frequency: 8.83MHz
2) Frequency deviation: Maximum +5kHz
3) Output voltage: More than 0.1V
4) Sweep rate: At least 0.5 sec/cm
10. Standard Signal Generator (SSG)
1) Frequency range: 1.8 to 30MHz
2) Output: —20dB/0.1uV~120dB/1V
NOTE: Generator must be frequency stable.
11. FREQUENCY COUNTER
1) Minimum input voltage: 50mV
2) Frequency range: Greater than 40MHz
12. NOISE GENERATOR
Must generate ignition noise containing harmonics beyond 30MHz.
13. Spectrum analyzer
1) Frequency range: 100K to 110MHz
2) Bandwidth: 1kHz to 3MHz
NOTE: R-1000 receiver may be used.
14, Detector
1) For adjustment of TX BPF
INPUTO rege "2 OUTPUT
To coil pack 10P IN60 To oscilloscope
GNDO— 3392 ) 1N60 J 100r _oO no
2) For adjustment of PLL unit BPF
INPUT O—
4
0 OUTPUT
To PLL unit oP IN6O To oscilloscope
GNDO- 1N60 Tioor On
15. Directional coupler
16. FIX-CH adjusting crystal element
1) 5.750MHz (center: 250kHz)
REFERENCE
Japanese '' SSG"' American''SG"'
—-6dB............... ee ee ee eee 0.25uV
OdB.. 2... ee es 0.5yV
0 | TeV
12dB. 1. Le ee ees Qu
24dB we ee ee ees Bu
30dB.... 2... et ee et es 15, 8uV
40dB ... 2... ee ee ee ee 50uV
50dB .... ee ee ee 158uV
60dB ... 2... ee ee ee 500uV
1A | = Sa 1.58mV
B0dB .. 1... 2. ee ee ee 5mV
9QOdB. 1... ee ee es 15,8mV
100dB .. 2... ee ee 50mV
120dB .. 2... . ees O0.5V