−41−
5-6-2
Current Measurement Maximum rating input value DC/AC 20A
1. Never apply voltage to the input terminals.
2. Finish measurement within 10seconds to prevent heat
generation.
3. Provide intervals of 5 minutes or longer between measurements
to prevent heat generation.
4. Perform measurement with the leads kept straight to prevent
overheat.
WARNING
1) Applications
Current in DC and AC circuit is measured.
2) Measuring ranges
20A
3) Measurement procedure (See fig12, page16)
①Connect the test lead of the black plug to the COM input
terminal and the red plug to the "20A" input terminal.
②Set the function switch at "20A" function, and select either
DC● or AC〜 with the shift switch.
③Apply the black test pin to the negative potential side of the
circuit to measure and the red test pin to the positive
potential side.
④Read the value on the display.
⑤After measurement, remove the red and black test pins from
the circuit measured.
●If the display will not change when an input signal is applied
(measurement is not possible), a probable cause is a blown fuse.
●The accuracy guaranteed frequercy range is 40Hz to 400Hz
(CD731), 40Hz〜1kHz (CD751)
●For the 20A range, no unit symbol will be indicated.
●5A Continuous : 20A for 10 secound max. with 5 minutes cool
down interval.
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