Hioki 3640-20, Instruction Manual

Page: 20 / 40

10
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2.4 Connecting 9662 LUX SENSOR
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Electromagnetic noise may cause measurements to fluctuate
if the instrument is used in the vicinity of an inverter-type
power supply or radio transmitter. In such situations, make
a loop in the Lux Sensor cable and clamp the provided
ferrite core around the loop as shown in the illustration
below.
Zero ajustment
With the measurement value displayed, place the cap
provided over the lens. If you press the zero adjust button,
"
0Adj
" appears on the LCD, and zero adjustment is
performed for all ranges.
If the
REC
mark or " " mark is displayed on the LCD,
zero adjustment cannot be performed.
If the cap is not set (100 x1 or greater for the 2000 1x
range), "
CAP
" appears on the LCD. Make sure the cap is
set.
"
CAP
" goes out after a few seconds, and the measurement
value reappears. If the cap is set while "
CAP
" is displayed,
zero adjustment is performed automatically.