Ac Current And Frequency Measurement - Ht Instruments Ht701 Bedienungsanleitung

5.4.

AC CURRENT AND FREQUENCY MEASUREMENT

The maximum input AC current is 400mA. Do not measure currents
exceeding the limits given in this manual. Exceeding current limits could
result in electrical shocks to the user and damage to the instrument.
Fig. 5: Use of the instrument for AC current measurement
1. Cut off power supply from the circuit to be measured.
2. Select the mA
3. If necessary, press the MODE key for manually selecting AC measurement (see §
4.3.3).
4. Use the RANGE key for manually selecting the measuring range (see § 4.2.6) or use
Autorange selection. If current value is unknown, select the highest range.
5. Insert the red cable into the input terminal mA and the black cable into the input
terminal COM
6. Connect the red lead and the black lead in series to the circuit whose current you want
to measure (see Fig. 5)
7. Supply the circuit to be measured. The display shows the value of current.
8. If the display shows the message "OL", the maximum measurable value has been
reached.
9. Press the Hz/0 key to display the frequency measure of AC current. The symbol
"Hz" is shown on the display.
10. For using the HOLD function, see § 4.2.1, for measuring MAX/MIN/AVG values see §
4.2.2 and for saving the result, see § 4.2.5
position.
CAUTION
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HT701