MEWOI MEWOI-JY218, User Manual, Page: 8 / 16

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VI. Keypad interface
VII. Instrument operation
Fit new batteries by sliding the battery cover open and inserting
two AA batteries in the correct orientation.
Switch on and allow the instrument to settle for 60 seconds before
calibrating.
Before starting a measurement, calibrate the instrument as per the
guidance in Chapter 8 of this manual.
7.1 Selecting the frequency and time weighting
Select the measurement frequency and time weighting required:
To toggle between A, C and Z weighting, press .
To toggle between fast, slow and impulse weighting,press
.
Measurement start/stop
Perform calibration
Soft key: CAL/Print
Time weighting toggle
Reset max, min,
LCpeak
Frequency weighting toggle
Measurement start/stop
Select/View