407026-EU-EN v2.6 3/14
5
Data Hold
While measuring, press the HOLD button to freeze the reading. The LCD will display D.H. indicating
that the Data Hold function is engaged. Press HOLD again to return to normal operation.
Relative % Mode
In the RELATIVE mode of operation, the meter displays light level as a comparison to a reference
value. The reference value is stored by pressing the ‘%’ button while the desired light level
reference is on the display. When the button is pressed, ‘100%’ will be displayed and the ‘%’ icon
will appear.
After the ‘%’ button is pressed, light measurements will be displayed as a percentage of the
reference value. For example, if the light level reference is 1000 LUX, a display of 500 LUX will be
represented as 50%. Further, a light level of 250 LUX will display as 25%. Use the equation below:
Press the ‘%’ button again to return to normal operation.
Maximum (MAX), Minimum (MIN), and Average (AVG) readings
The meter can keep track of the highest, lowest, and average readings for later recall.
1. Press the RECORD button to start tracking the MAX, MIN, and AVG readings. The REC display
will switch on.
2. When desired, press the RECALL button.
3. The MAX display icon appears next to the REC display icon. The reading shown is the highest
reading encountered since the RECORD button was pressed.
4. Press RECALL twice more to view the MIN and AVG readings.
5. Press the RECORD button to return to normal operation.
RS-232 PC Interface
This meter is equipped with a RS-232 serial data port. For streaming of data to a PC via the RS232
Output jack, the optional 407001-USB kit (RS232 to USB cable and driver CD) along with the
407001 software (available free at www.extech.com) are required.
Battery Replacement
When the low battery indicator appears (LBT), replace the battery as soon as possible. Reliable
readings can be obtained for several hours after the first appearance of the low battery indication.
To replace the battery:
1. Remover the meter's rubber protective holster.
2. The battery compartment is located on the lower back of the meter. Pry the battery compartment
cover off using a small coin or screwdriver and remove the battery.
3. Replace the 9V battery and reinstall the cover.
4. Ensure that the battery cover is secured after replacing the battery.
You, as the end user, are legally bound (
Battery ordinance
) to return all used batteries and
accumulators;
disposal in the household garbage is prohibited!
5.
You can hand over your used batteries / accumulators at collection points in your community
or wherever batteries / accumulators are sold!
Disposal:
Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
Light measurement
Display % = --------------------------------------------------------------------------- X 100
Stored reference light measurement
Содержание 407026
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