![CEM 9915 Operating Instruction Download Page 13](http://html.mh-extra.com/html/cem/9915/9915_operating-instruction_2580992013.webp)
1.
Perform any measurement as described in the operating instructions.
2.
Press the RELATIVE button to store the reading in the display and the
"
REL
" indicator will appear on the display.
3.
The display will now indicate the difference between the stored value
and the measured value.
4.
Press the RELATIVE button to return to normal operation.
BACKLIGHT BUTTON
1.
Press the BACKLIGHT button 2 seconds the display light ON
2.
Press BACKLIGHT button again to exit the light mode.
Hz/%duty BUTTON
Press Hz/Duty Button to choose Frequency or Duty Cycle in the range of
Frequency; Press Hz/%Duty Button to measure Frequency or Duty Cycle
while measures voltage or Current, the Voltage/Current requirement and
range of Frequency see the following form, press Hz/%Duty Button to
return to measurement of Voltage or Current.
Range
( DC/AC )
Sensitivity
Frequency
width
4V
≥
1.5V rms
5Hz~10kHz
40V, 400V
≥
10V rms
5Hz~20kHz
≥
20V rms
5Hz~200kHz
1000V/1000V
≥
420V rms
50Hz~1kHz
400mA
≥
45mA rms
5Hz~5kHz
10A
≥
4A rms
5Hz~1kHz