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Precautions when Processing Test Leads
Variations in oscillation frequency and variations in measurement cable inductance will have a
particularly significant effect on test results when testing low-inductance workpieces.
It is recommended that you bundle the 2 cables as shown below to minimize impedance changes
due to shape.
Bundle band
• To reduce the waveform differences between lines when testing the same type of workpiece on
multiple lines, etc., as far as possible use cables with the same capacitance values. The cable
capacitance value depends on the length and type. Use an inductance measuring instrument to
adjust the cable capacitance value between shielding from the core wires.
• The recommended wiring diagram when creating a switching device using relays, etc., is shown
below.
Connect all coaxial cable shields to the ground pole.
Switching device
Bundling the HIGH and LOW
terminals is recommended.
In the case of the diagram below, the cable shields are connected via the case of the switching
device to comprise the instrument ground pole. A shorter distance for the core switching unit is
recommended.
Summary of Contents for ST4030
Page 2: ......
Page 14: ...6 Usage Notes ...
Page 32: ...24 Inspecting before Measurement and Verifying Operations ...
Page 42: ...34 Table Copying ...
Page 108: ...100 Setting Dielectric Break down Judgment Conditions ...
Page 132: ...124 Terminal Open Error Setting ...
Page 198: ...190 Editing Files and Folders ...
Page 214: ...206 Interface Specifications ...
Page 248: ...240 Precautions when Processing Test Leads ...
Page 252: ...244 Index ...
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