Teledyne T3DMM6-5, User Manual

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3. Set the range
Press
【
Range
】
to select a range for the measurement. You can also use
the , , and keys on the front panel to select the range. Auto
(autorange) automatically selects the range for the measurement based on
the input. Autoranging is convenient, but it results in slower measurements
than using a manual range. Autoranging goes up to 110% of a range and
changes up a range at 110% of the present range, and changes down a
range when below 10% of the present range.
4. Set the Integration Time
Press
【
Aperture
】
and choose the number of power-line cycles (PLCs)
to use for the measurement. Selecting 100PLC provides the best noise
rejection and resolution, but the slowest measurements.
5. Autozero setting
Press
【
Auto Zero
】
to enable or disable this function. Autozero provides
the most accurate measurements but requires additional time to perform
the zero measurement. With autozero enabled (On), the DMM internally
measures the offset following each measurement. It then subtracts that
measurement from the preceding reading. This prevents offset voltages
present on the DMM’s input circuitry from affecting the measurement
accuracy.
6. Set the relative value (Optional operation)
Press
【
Rel
】
to start or stop the Relative math function. When it is
started, the reading displayed is a value which comes from the result of
actual measurement value minus the relative value that has been set. The
default relative value is the measurement value when the function is
started. (For details, please refer to “ Math Functions ” in Chapter 2.)