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Lock Keypad – GA257B and GA257L
The GA257B and GA257L instruments operate on a fixed range and therefore
it is not possible to change the measuring range. The range key described on
the previous page is therefore not needed on these models and is therefore
fitted with a dedicated instrument Lock Key.
Press
to immediately place the instrument in Lock mode. The instrument
will constantly display the battery status.
To UNLOCK the keypad press the following keys in the sequence shown below:-
It is also possible to LOCK the keypad on GA116L, GA216L, GA116E and
GA116I models through the options available under the Main Menu. Use the
same procedure as above to UNLOCK the keypad.
The LOCK feature is used to lock the instrument keypad. All keypad functions
are therefore disabled including the POWER key. This function is often used to
avoid inadvertent operation or tampering while the instrument is being used.
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OK
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