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Deleting data
The data can be deleted if READ or MEMO have been pressed. Pressing CLEAR briefly deletes the data on the
current memory position, prolonged pressing (c. 5 sec) deletes all saved data.
Backlighting
The background illumination is switched on or off by pressing LIGHT and switches off automatically 15 seconds
after activation.
Automatic deactivation
The automatic deactivation function is activated or deactivated by pressing APS. When the automatic deactivation
function is active, the
tone will sound after 15 minutes of inactivity and the measuring instrument is switched into resting state. The
device can be reactivated by pressing any button.
The rotary switch must be set to "OFF" if the measuring instrument is not used for a longer period.
Replacing the battery
Danger
|
Do not change the batteries if the measuring instrument is damp.
Do not change the batteries whilst the measuring instrument is being used. Before changing the
|
batteries, switch off the measuring instrument and disconnect the test leads and the earthing
rods to avoid an electric shock.
Caution
|
Do not mix new and old batteries.
Comply with the polarity of the batteries.
|
Unscrew and remove the cover of the battery compartment.
Replace the batteries whilst complying with the polarity.
Replace the cover of the battery compartment and screw down.
®
Testboy
TV 441
symbol is displayed on the LCD. If the automatic deactivation function is active, a signal
Operation
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