EN-21
6-2 HOLD BUTTON
0A
390A
Press the HOLD BUTTON to freeze the displayed value. Press
it again to unfreeze the display and return to normal operation.
7. Buzzer
The Instrument beeps once for every valid button-press, and
beeps twice for every invalid button-press.
8. Power-up options
Press the following buttons while turning the instrument on to
enable the following functions:
PEAK BUTTON :
disable auto power off.
INRUSH BUTTON :
display of the software version.
HOLD BUTTON :
display all LCD symbols approx 10sec.
