Operation Of Hold Mode; The Use Of Relative Value Mode - UNI-T UT90C Operating Manual

Model UT90C: OPERATING MANUAL

Operation of Hold Mode

Warning
To avoid possibility of electric shock, do not use Hold
mode to determine if circuits are without power. The
Hold mode will not capture unstable or noisy readings.
The Hold mode is applicable to all measurement functions.
l Press
to enter Hold mode; the Meter beeps.
l Press
again to exit Hold mode; the Meter beeps.
l In Hold mode,

The Use of Relative Value Mode

The mode applies to all measurement functions except
frequency and charge function,it subtracts a stored
value from the present value and displays the relative
value ( ) as the result
The definition is as follows:
l Relative value ( ) = present value – stored value
For instance, if the stored value is 20.0V and the
present measurement value is 22.0V, the reading
would be 2.0V. If a new measurement value is equal
to the stored value then display 0.0V.
To enter or exit
l Use rotary switch to select the measurement function
before selecting
change manually after
exits the
l Press
measurement range is locked and display the last
measurement value as "0" as the stored value.
l Press
RESET again to reset the stored value and
exit Mode.
l Turn the rotary back and forth one time to return to
auto ranging mode. This only applies to those
functions having auto ranging.
is displayed.
mode:
RESET. If measurement functions
RESET is selected, the Meter
mode.
RESET to enter
26
mode, and the present