Button Descriptions - Extech Instruments EX505A User Manual

True rms autoranging digital multimeter
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Product Description

3.3 Button Descriptions

#NAS100177; r. AD/97993/98002; en-US
Short press to select an alternate mode for the function in use.
Select DC or AC in the voltage and current modes.
Select resistance, diode, continuity, or capacitance.
Select ℃ or ℉ in the Temperature mode.
Data Hold button: Short press to freeze/unfreeze reading.
LCD backlight button: Long press to switch the backlight on or off. The back-
light switches off automatically after 5 minutes.
Short press to switch to the manual range, and then to step through the
available ranges. Long press to return to the Auto range mode.
Maximum and Minimum Readings: Short press to toggle the MAX and MIN
measurements. Long press again to exit the mode.
Relative (zero) button: Press to store the reading as a reference. Subse-
quent readings will subtract the reference from the displayed reading.
Frequency and Duty Cycle button: When measuring AC current or voltage
(function switch set to a voltage or current position), press this button to view
the frequency of the measured signal. Press again to view the duty cycle,
and press a third time to return to the voltage or current display.
When measuring electronic frequency signals, set the function switch to Hz
% and then use this button to toggle the frequency and duty cycle displays.
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