Lake Shore F41, Quick Start Manual, Page: 11 / 16

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http://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/
F71/F41 Teslameter Quick Start Guide
Max Hold
The maximum and minimum values are
displayed on the Home screen. Reset
these values by tapping the
Reset button.
Tap the box to see a detail page where
the maximum and minimum can be reset
independently.
Relative Measurement
The relative measurement allows you to take field measurements
relative to a baseline field. The relative reading is equal to the pres-
ent field value minus the baseline. The relative mode applies to the
DC reading in DC mode, and to the RMS reading in the AC and high
frequency modes.
Touch the Tare button to capture the present reading as a new base-
line. Tap the box to see a detail page where the baseline can be set
manually.
TIP: This feature can be used to remove the small amount of
TruZero™ residual offset if a 0 reading is desired when the probe is
placed in a zero gauss chamber. Measure the residual offset with the
probe in a zero gauss chamber and set the relative baseline to the
average offset value.