TH-308GB UHF SERVICE MANUAL
- 30 -
Adjustment
Required test Equipment
1
．
Stability power supply
1
．
The supply voltage can be changed between 5V and 18V, and the current is 3A or more.
2
．
The standard voltage is 7.5V
2
．
DC Ammeter
1
．
Class 1 ammeter (17ranges and other features).
2
．
The full scare can be set to either 300mA or 3A.
3
．
A cable of less internal loss must to be used.
3
．
Frequency counter (F. Counter)
1
．
Frequency of 1GHz or so can be measured
。
2
．
The sensitive can be changed to 500MHz or blow, and measurements are highly stable and
accurate .(about 0.2ppm)
。
4
．
Power Meter
1
．
Measurable frequency
：
Up to 500MHz
2
．
Impedance
：
50
Ω
, instability.
3
．
Measuring range
：
full scale of 10W or so.
4
．
A standard cable (5D2W 1m) must be used.
5
．
RF Voltmeter(RF V.M)
1
．
Frequency range
：
up to 500MHz or so.
6
．
Linear Detector
1
．
Frequency range
：
up to 500MHz or so.
2
．
Characteristics are flat, CN is 60dB or more.
7
．
Digital Voltmeter
1
．
Voltage range
：
FS=18V or so.
2
．
Input resistance: 1M
Ω
or more
8
．
Oscillograph
1
．
Measuring range
：
DC to 30MHZ.
2
．
Provide highly accurate measurements for5 to 25MHz.
9
．
AF Voltmeter (AF V.M)
1
．
Measuring range
：
50Hz to 1MHz
2
．
Maximum sensitivity
：
1mV or more.
10
．
Spectrum Analyzer
Summary of Contents for TH-308GB UHF
Page 29: ...TH 308GB UHF SERVICE MANUAL 28 Exploded View ...
Page 30: ...TH 308GB UHF SERVICE MANUAL 29 Packing View ...
Page 36: ...TH 308GB UHF SERVICE MANUAL 35 BPF Wave Figure 1 ...
Page 40: ...TH 308GB UHF SERVICE MANUAL 39 TH308GB Parts View Side A ...
Page 41: ...TH 308GB UHF SERVICE MANUAL 40 TH308GB Parts View Side B ...
Page 42: ...TH 308GB UHF SERVICE MANUAL 41 TH308GB PC Board View Side A ...
Page 43: ...TH 308GB UHF SERVICE MANUAL 42 TH308GB PC Board View Side B ...
