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6. Operation
6.3.1.10 Key "unit" – Unit
With the key "unit" the unit to display the measured value can be selected.
One can choose from the units Tesla, Gauss, Oersted and A/m. Every key
press cyclically chooses the next unit.
The prefix of the display unit is automatically set depending on the type of
the connected probe and the chosen measuring range.
For exemptions see section 6.3.2.6 Display of Units with older AS-Active-
Probe.
See also section 6.3.3.22 Command "unit" for controlling the unit via the
USB Interface.
6.3.1.11 Key "rel abs" – Relative Measurement
With this key the measuring mode is set to relative measurement. With
pressing the key, the current measured value is taken as reference value
and shown with unit in the lower line of the display.
From now on the measured values in the upper display line are shown
relative to this reference value.
relative value = absolute value – reference value
If the key is pressed again, the Teslameter FM 302 switches back to the
measuring mode absolute measurement.
The relative measurement has no influence on the analog output of the
Teslameter FM 302. The analog output always delivers the current absolute
signal.
See also section 6.3.3.19 Command "relative" and 6.3.3.6 Command
"absolute" for switching between absolute measurement and relative
measurement via the USB interface.
Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
Figure 15 Display in relative measurement
Page 28
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