Ac Vs. Dc Coupled Frequency Measurements; Changing Voltage Range In Frequency Mode - Fluke 183 User Manual

Figure 7. Positive and Negative Duty Factor
Positive duty factor: % duty = (a/b) x 100
Negative duty factor: % duty = (1–a/b) x 100

AC vs. DC Coupled Frequency Measurements

When the duty factor measurement mode is off, the frequency measurement is
AC coupled; otherwise, it is DC coupled.

Changing Voltage Range in Frequency Mode

To change voltage range, press
in the upper display. Continue pressing
voltage ranges until the range you want shows. The default voltage range is
5 V.
b
a
. The voltage range shows momentarily
RANGE
RANGE
True RMS Digital Multimeters
Operating Basics
to cycle through the available
ahr10f.eps
17