Fluke 28 II Ex User Manual

28 II Ex
Users Manual
34
How to Determine Pulse Width
For a periodic waveform (its pattern repeats at equal time
intervals), you can find the time that the signal is high or
low as follows:
1. Measure the signal's frequency.
2. Push G a second time to measure the signal's
duty cycle. Push E to select a measurement of
the signal's positive or negative pulse, refer to
Figure 9.
3. Use this formula to find the pulse width:
Pulse Width
=
% Duty Cycle ÷ 100
(in seconds) Frequency
HiRes Mode
On the Product, push H for one second to enter the high-
resolution (HiRes) 4-1/2 digit mode. Measurements are
shown at 10 times the usual resolution with a maximum
display of 19,999 counts. The HiRes mode works in all
modes but capacitance, frequency counter functions,
temperature, and the 250 μs (peak) MIN MAX modes.
To go to to the 3-1/2 digit mode, push H for one second.

Fluke 28 II Ex Specifications

General

Diode test	Yes
Product type	Digital multimeter
Product color	Black, Red
Frequency range	0.0005 - 199.99 kHz
DC current range	0.0000001 - 10 A
DC voltage range	0.0001 - 1000 V
Resistance range	0.1 - 50000000 Ω
Measuring category	CAT IV 600V
Placement supported	Handheld multimeter
Basic accuracy (frequency)	0.005%
Basic accuracy (DC current)	0.2%
Basic accuracy (DC voltage)	0.05%
Temperature measurement range	-200 - 1090 °C
Battery type	AAA
Power source	Battery
Battery technology	Alkaline
Number of batteries supported	3
Operating altitude	0 - 2000 m
Maximum storage altitude	10000 m
Operating relative humidity (H-H)	0 - 80 %

Weight and Dimensions

Depth	198.1 mm
Width	100 mm
Height	6.35 mm
Weight	698.5 g