GW Instek GDM-8261A User manual - Manual (Page 49)

DUAL MEASUREMENT
49
D
UAL MEASUREMENT
Dual Measurement
Background The dual measurement mode allows you to use the 2nd
display to show another item, thus viewing two different
measurement results at once.
When the multimeter is used in dual measurement mode,
both displays are updated from either a single
measurement or from two separate measurements.
If the primary and secondary measurement modes have
the same range, rate and rely on the same fundamental
measurement, then a single measurement is taken for
both displays; such as ACV and frequency/period
measurements.
If the primary and secondary displays use different
measurement functions, ranges or rates, then separate
measurements will be taken for each display. For example,
ACV and 2W/4W resistance measurements.
Example Dual
Measurement
Applications Combination Applications
DCV ACV

Measure DC signals that have AC
components*.
For example:
Measure the DC offset and AC noise
from an amplifier output.
Measure the DC output voltage and
ripple from a DC power supply.
* Ripple or the AC noise frequency
must be within the DMM’s
measurable AC bandwidth for the
noise to be measured.