KYORITSU 2009A - Manual (Page 25)

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NOTE
● If the instrument in the Data Hold mode goes into "sleep," it will
return to the normal mode.
７−３ LoHz Function
In ACV or ACA range, if frequency of the voltage or current under test
is 40Hz or lower, the display indicates "LoHz" and sample rate is
automatically switched from the normal 3 times/sec to 2 times/sec to
reduce fluctuation of the reading.
"LoHz" is also indicated where input is 3% of full scale or less.
７−４ OUTPUT Terminal (For current ranges only)
DANGER
●Never use the instrument on a circuit above 750VAC/1000VDC.
This may cause electrical shock hazard and damage to the
instrument or the circuit under test.
●Do not make measurement with the battery compartment cover
removed.
●Never apply voltage to the OUTPUT terminal.
①Attach the output plug to a connection lead so that the output
voltage can be connected to a recording device such as a chart
recorder.