Functional description
32
Testboy
®
TV 431
Locking the Test button for the insulation test
Press the Test button in insulation test mode to perform the insulation test until the button has been released. The dis-
play will show the HOLD symbol as soon as the button has been released.
Press the LOCK button (the display will show LOCK) and then the Test button. An insulation test will be performed until
you press the Test button again. The Test button is unlocked and the insulation test aborted.
If the time function has been activated, the function for locking the Test button is not available.
Saving measurement data
Pressing the MEMO button activates the data hold function automatically. 'MEMO' appears on the LC display and; the
auxiliary display shows the memory cell (see below). Change the code with the
△
/
▽
buttons and save the data with the
ENTER button in the desired memory cell. The display shows ‘SAVE’ If a signal tone is issued, the data has been
saved. The device can save 20 data entries and memory cell between 00 and 19.
Displaying measurement data
Press the READ button to display the saved data. Use the
△
/
▽
buttons to select the desired code and access the ap-
pendant data.
Deleting data
Working in READ mode, press the ENTER button. The display shows dEL n. Press the ENTER button again to delete
the selected data. You can delete all the data using the READ button. A signal tone indicates that the data has been de-
leted. Press a different button to leave the current mode.
Comparison function
If the comparison function has been activated and the measured value exceeds or undercuts the upper or lower limit
