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4. ERROR SITUATIONS
4.1 TEST FOR “OPEN LOOP”
The text
flashes in the display:
CAUSE
The unit is unable to generate the desired current.
The current loop is probably open or selection of PWR is
incorrect.
REMEDY
Check whether instrument is connected correctly.
Check that PWR selection is correct.
4.2 TEST FOR INCORRECT POLARITY
The text
flashes in the display:
CAUSE
The unit measures a negative current.
REMEDY
The test leads + and - are probably to be changed over.
4.3 TEST FOR “OVERRANGE”
The text
flashes in the display:
CAUSE
The unit measures a current which is greater than 24mA or a
voltage which is greater than +45Volts or less than -45Volts.
REMEDY
Measure
only
voltages in the range -45 to +45 Volts.
Measure
only i
n current loops, where the current is less
than 24mA.
Check that the instrument is connected properly.
See Fig. 3 to Fig. 7 on the cover of the user’s guide.
