Tenmars TM-291, User Manual

Page: 7 / 12

4
reading on the LCD for a long time; click the
button again to unlock to unlock the reading.

Click the button to continuously update the
maximum measuring value on the LCD to keep the
+peak value (max. value), click the button again
to cancel.

Click the button to continuously update the
minimum measuring value on the LCD to keep the -peak
value (min. value), click the button again to
cancel.
5-1 Disable Auto Power Off Mode
The meter will automatically power off after
powering on for about 15 minutes. The LCD
displays symbol at the mode. If to
disable the function, press and hold the
button for more than 2 seconds.
5-2 Zeroing

Prior to measuring the static voltage, click the
button for more than 2 seconds to clear the reading if an
old reading survived on the LCD. (Note: Set the static
voltage of the surrounding environment to be 0, if not,
the measuring may be biased.)
5-3 Manual record mode

At measuring mode, click button to record