Calibrateur multifonctions CX 1651
142 Manuel de l'utilisateur
The multifunction calibrator allows many other, less frequently used parameters to be set. Setup menu is used to
set these parameters. Setup menu is opened by pressing SETUP display button. If output terminals are connected,
they will be disconnected and the following display appears:
Use ∧ or ∨ cursor button or the knob of the potentiometer to browse the menu options. Active option is always
inverted and when changed, the descriptions of display buttons change as well. Display buttons show how the
respective parameter can be set. Each parameter can be changed after the knob of the potentiometer is pressed.
Press EXIT display button twice to save the parameters when the setting is completed. New settings are retained
when the calibrator is switched off. Setup menu offers the following options:
25. Coil x50 .... xx ON / OFF
26. GND U .... xx ON/OFF
27. GND I .... xx ON/OFF
This parameter connects Lo (-I) to GND. In practice this means that Lo (-I) terminal is grounded. By pressing the
display buttons, the terminal can be grounded or ungrounded. OFF is set by the manufacturer, output terminals
are not grounded.
It is recommended to ground only the voltage channel GND U ON, GND I OFF, for all ranges except the
generation of power or energy. If the meter to be calibrated has Lo terminal grounded, it is recommended to
unground both outputs of the calibrator, GND U OFF, GND I OFF to exclude ground loops.
Note
If neither the calibrator’s output, nor the meter’s inputs are grounded, signal/noise ratio can arise at the
calibrator’s output.
28. Temp.scale .... xx ITS90/PTS68
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