be seen. To allow a zero operation beyond this point either the
ZERO RNGE
function value will
need to be raised or a new zero reference point introduced via the
CAL ZERO
function. If repeated
zero operations are required the
ZERO RNGE
function should be set to
OFF
or alternatively the
tARE
operation could be considered.
6.5
Zero range zero calibration
CAL ZERO
- Zero range zero calibration - a
CAL ZERO
zero operation can be used to ensure
that the display zero and the
ZERO RNGE
reference zero are at the same point after a calibration.
After a calibration the
CAL ZERO
operation can also be used to select a zero point other than
the display zero as the reference for the
ZERO RNGE
function. For example if the
CAL ZERO
operation is carried out with a display reading of
500
and a
ZERO RNGE
reading of
10
the
zero range function will allow the display to zero only if the current display reading is between
490
and
510
. To perform a calibration zero press the
^
and
v
buttons simultaneously at the
CAL ZERO
function, a live reading will be seen, press the
F
button, the message
CAL ZERO
End
should now be seen indicating that the instrument has accepted the zero point. Although the
display reading will not change as a result of the calibration zero the input value on the display at
the time of the operation will be the new zero reference point for the
ZERO RNGE
function.
6.6
Uncalibration
UCAL
- Uncalibrate - used to set the instrument back to the factory calibration values. This
function should only be used when calibration problems exist and it is necessary to clear the
calibration memory. To clear the calibration memory press the
^
and
v
buttons simultaneously
at the
UCAL
function. The message
CAL CLr
will be seen to indicate that the memory has
cleared.
RM4IVMAN-2.1-0
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Summary of Contents for RM4-IV
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