Fluke BT5300 Series User Manual page 79

In the Auto range mode (see the section
the Instrument will try to zero all measurement ranges. As shown in
Zero adjustment can only remove the offset of 1000 digits for ACR and 1 mV for
DCV measurement. For example, in 3 mΩ range, zero adjustment can only remove
0.1 mΩ drift. If the drift is more than 1000 digits, for example, 0.2 mΩ in 3 mΩ
range, "Zero Adjustment failed" message will be displayed during zero
adjustment.
If the zero adjustment is completed successfully under the ACR+DCV measurement function, the
zeroed state will be retained when switching to the ACR or DCV measurement function.
If the zero adjustment is completed successfully under the ACR or DCV measurement function, the
zeroed state will be cleared when switching to other measurement functions.
For zero adjustment under Auto range, once the zero adjustment for all range is completed
successfully, "Zero Adjusted" is shown when the Product switches to any range; for zero adjustment
under a certain range, "Zero Adjusted" is shown only under this range.
Figure 41. Zero adjustment failure prompt
Changing Resistance
Figure 42. Zeroing all ranges
Note
Range), when the user presses
Figure 42.
Battery Tester
Instrument Setup
,
67