CIRCUIT TESTER
Circuit testers are available in both the analog and digital types. They should be used selectively according to the
purpose of measurement.
Analog type: This type is convenient for observing movement during operation, but the measured value should only
be used for reference or rough judgement.
Digital type: Fairly accurate reading is possible, but it is difficult to observe the variation or movement.
1. Difference in measurement results with the digital type and analog type
* The result may be different between measurements with the analog type and digital type.
Always use a circuit tester according to its operation manual.
Cautions when the polarities are different between the analog type and digital type are described below.
(1) Analog circuit tester
Measurement result example
Tester range: kΩ range
(2) Digital circuit tester
Measurement result example
Tester range: MΩ range
Forward direction Reverse direction
Analog type
Forward
Continuity exists
11 kΩ
Reverse
No continuity
∞
Forward direction Reverse direction
Digital type
Forward
No continuity
1
Reverse
Continuity exists
2 MΩ
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