9
1. Display
LCD display, with a max. reading of 9999
2. "
" button
Press this button to set the meter to Relative Mode,
and
" "
will appear as an indicator. To exit Relative
Mode, press this button again, and
" "
will disappear.
Pressing and holding down this button for about 2
seconds set the meter to USB communication mode
(In this mode, you can transfer the readings of the meter
to a PC by the USB interface and the communication
application. ), and
"
USB
"
appears as an indicator.
To exit the USB communication mode, press and hold
down this button for about 2 seconds, and
"
USB
"
disappears.
3. "
" button
When measuring ac voltage ( or ac current ), you can
press this button to select frequency, duty cycle or ac
voltage ( or ac current ) measurement function, and the
display will show the relevant symbol.
In frequency or duty cycle measurement mode, you
can press this button to switch between frequency and
duty cycle measurements.
4. "
" button
Press this button to hold the present reading on the
display, and
"
"
will appear as an indicator. Press this
