Abell TH308G, Service Manual

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ABELL TH-308G VHF Service Manual
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10
．
Spectrum Analyzer
1 ． Measuring range ： DC to 1GHz or more.
11
．
Standard Signal Generator (SSG)
1
．
Maximum frequency
：
500MHz or more.
2
．
Output
：－
133dBm/0.05 µ V to 7dBm/501mV
3 ． Output resistance ： 50 Ω
12
．
Tracking Generator
1
．
Center frequency
：
50KHz to 500MHz
2
．
Frequency Deviation
：
±35MHz
3 ． Output voltage ： 100mV or more
13
．
Dummy Load
1
．
8 Ω
，
3W or more
14
．
Audio Generator (AG)
1
．
Frequency range
：
100Hz to 100KHz
2
．
Output
：
0.5mV to 1V
15
．
Distortion Meter
1 ． Frequency range ： 30Hz to 100KHz
2
．
Input level
：
50mVto10Vrms
ADJUSTMENT FREQUENCE LIST
Destination
A37 B25
Channel TX(MHz) RX(MHz) TX(MHz) RX(MHz)
Center 155.025 155.025 235.025 235.025
Low 136.025 136.025 220.025 220.025
High 173.975 173.975 249.975 249.975
Remark
·Connect the transceiver to the PC.
·Send the channel data to the transceiver, then backup the data.
·Program the adjustment frequencies which are on the list, into the transceiver.
Note
：
Remember to reload the backed up date after making the adjustment.
1
．
Jig (chassis) for adjustment
2
．
Use the jig as follow
：
1
．
Insert the coaxial cable connector into the jig.