Relative Mode - SEFRAM MW3105 Manual

When measuring AC or DC voltage, frequency and resistance peak values with the meter, test leads are used. The general
operation is similar to the description given for measuring current. When measuring AC or DC voltage and frequency, just as
when measuring current, the meter is connected to the source being measured before power is applied. The remaining
operation follows the description outlined for AC current. Peak resistance measurements must be made with the power off.
PEAK HOLD operates very fast, in a few milliseconds, long before it's shown at the display.
Exit the PEAK HOLD mode by holding the P PEAK button down for about 2 seconds.

3.14 RELATIVE MODE

Relative mode ( ZERO) permits measurements with respect to a reference other than zero. First, measure a value for use as
your reference, then press the  ZERO button. ZERO  is now displayed and the meter REFERENCE READING reverts to
manual ranging. The reference value now becomes zero. All subsequent measurements are "relative" to the reference value.
For example, for a reference of 316 ohms, first measure a 316 ohm value. Upon entering the  ZERO mode, a value of 316
ohms becomes zero, 320 ohms is read as 4 and 310 ohms is read as -6. If the variation from the reference is too great, an
overrange may occur signaled by beeps. When this happens, up-range the meter then reestablish  ZERO reference on the
new range.
To exit the relative mode, hold the  ZERO button down for about 2 seconds.
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