UNI-T UT58D Spécifications télécharger pdf (Page 15)

Model UT58D: OPERATING MANUAL

Measurement Operation(2)

Note

l If the value of voltage to be measured is unknown,

use the maximum measurement position (1000V)

and reduce the range step by step until a satisfactory

reading is obtained.

l The LCD displays “1” indicating the existing selected

range is overloaded, it is required to select a higher

range in order to obtain a correct reading.

l In each range, the Meter has an input impedance of

approx. 10M This loading effect can cause

measurement errors in high impedance circuits. If the

circuit impedance is less than or equal to 10k , the

error is negligible (0.1% or less).

l When DC voltage measurement has been completed,

disconnect the connection between the testing leads

and the circuit under test, and remove the testing

leads away from the input terminal of the Meter.

B. DC and AC Current Measurement (see figure 4)

( figure 4)

Black Red

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UNI-T UT58D Spécifications Page 15