Operation
18
Testboy
®
TV 335
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Zero adjustment function
The zero point of the sensor curve can be adjusted by low intensities of light for optimum meas-
urement results. After switching on the instrument, install the protective cap in order to cover the
complete sensor.
By pressing the button “HOLD/ZERO” for an extended period, the adjustment is started. Wait until
the instrument is successfully adjusted, indicated by an acoustic signal.
The value 0.00 Lux appears on the display. During adjustment, avoid strong solar radiation.
Data hold function
By momentary activation of the button “Hold/Zero”, the measurement value is saved until the but-
ton is again activated.
Содержание TV 335
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