Abell TH-308GB UHF, Руководство по обслуживанию

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TH-308GB UHF SERVICE MANUAL
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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 moer
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 FREQUENCY LIST
Destination
D57 D02
Channel
TX f
(MHz) Rx f
(MHz) TX f
(MHz) Rx f
(MHz)
Center 460.050 410.05
Low 450.050 400.05
High 469.950 419.95
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.
2 ． Place the unit on the jig and fix it with 12 screws.
3
．
Solder the antenna terminal to the terminal of unit.
Note
：
Supply power from an external power supply
(Relay terminal
：
+ Jig
<chassis> ：-)