Hz And % Duty Cycle Test; Relative Mode; Max Min Mode - Extech Instruments EX350 User Manual

Hz and % Duty Cycle Test
Hz and Duty Cycle % are available in the AC Voltage or AC Current functions or can be selected
directly in the Hz% position of the function switch. Follow the AC voltage or AC Current
procedures for operational details.
% Duty Cycle Note: Duty Cycle measurements are AC only for this meter. Measurement
signals must be 'zero crossing' and must reach ‐0.7V for the meter to properly display Duty
Cycle %.
Relative Mode
This function applies only to Voltage, Current, Temperature and Capacitance modes. In Relative
mode a reference reading can be stored with which to compare subsequent readings. Press the
REL button to store the displayed reading in memory, this becomes the reference. The symbol
will be displayed when the Relative mode is active. Subsequent readings will now be
compared to the stored reference (Displayed Reading = Measurement minus Reference). Press
the REL button again to exit the Relative mode; the Relative symbol will switch off.
Max Min Mode
Press the MAX MIN button to start recording the Max and Min measured values. The MAX icon
will appear on the display. Press the MAX MIN button to step through and view the Max value,
the Min value and the Max‐Min value. Press and Hold the MAX MIN button for 2 seconds to exit
the mode. Max Min is available for Voltage, Current, Resistance and Temperature. Manual range
is automatically selected in this mode
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