Sanwa CD731A, Instruction Manual

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6
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MAINTENANCE
1. This section is very important for safety. Read and understand
the following instruction fully and maintain your instrument
properly.
2. The instrument must be calibrated and inspected at least once
a year to maintain the safety and accuracy.
WARNING
6-1 Maintenance and inspection
1. Appearance
・
Is the appearance not damaged by falling?
2. Test leads
・ Is the cord of the test leads not damaged?
・ Is the core wire not exposed at any place of the test leads?
If your instrument falls in any of the above items, do not use it and
have it repaired or replace it with a new one.
●
Make sure that the test leads are not cut, referring to the section.
6-2 Calibration
The calibration and inspection may be conducted by the dealer.
For more information, please contact the dealer.
1) Measurement item
Anode voltage of cathode ray tube, high focusing voltage, and
voltage of high-impedance circuit
2) Measurement range : DC1000 V range
(Set manually in the manual mode)
3) Measuring method
①
Insert the red plug of the high-voltage probe into the V input
terminal and the black plug into the COM terminal.
② Set the function switch to V, select DC with the SELECT
switch, and set the RANGE HOLD switch to the 1000 V range.
③ Connect the black clip to the ground line of the circuit under test and
touch the measuring position with the pin at the end of the probe.
④
Read the indicator and multiply the reading by 0.1 for kV.
⑤
After measurement, release the pin from the circuit under
test and then remove the clip.
●
HV-60 cannot be used for AC voltage measurement.