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NEPTUNE
EN - 28
measurement and comparing this new value to the compensated one. If the difference
between the values is
≤
0.01
, calibration is confirmed and the message
“
OK
”
is
displayed (see Fig. 33
–
middle). Subsequently, the instrument goes back to the
measuring screen with the message
“
ZERO
”
displayed to indicate that cable
compensation is present.
5. In case the first measurement detects a resistance of test cables
>5.00
, the
instrument shows the following screens in a quick sequence:
Fig. 34: Results of zeroing not correctly performed
6. Messages
“
>5.00
”
and
“
NOT OK
”
are initially shown on the display (see Fig. 34
–
left
side). Subsequently, message
“
CLr
”
is shown, to indicate that calibration has been
cancelled (see Fig. 34
–
middle) and the message
“
ZERO
”
is not shown in the
measuring screen (see Fig. 34
–
right side).
7. To zero a cable calibration in the instrument, carry out the procedure with
open input
terminals V
/+ and COM/
and press and hold (>2s) key
/ZERO
. The following
screens are displayed in a quick sequence:
Fig. 35: Zeroing calibration