FLUKE-88-5 Fluke Electronics, FLUKE-88-5 Datasheet - Page 40
FLUKE-88-5
Manufacturer Part Number
FLUKE-88-5
Description
MULTIMETER AUTOMOTIVE 88V
Manufacturer
Fluke Electronics
Series
8xr
Type
Digital (DMM)r
Specifications of FLUKE-88-5
Includes
Battery, Hanger, Temperature Probe, Test Leads
Style
Handheld
Display Digits
4.5
Display Type
LCD, Bar Graph
Display Count
20000
Function
Voltage, Current, Resistance, Capacitance, Temperature, Frequency
Functions, Extra
Continuity, Diode Test
Features
Auto Off, Backlight, Hold, Min/Max/Ave
Ranging
Auto/Manual
Response
Average
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
2550519
Users Manual
Measuring Pulse Width
For a periodic waveform (its pattern repeats at equal time
intervals), you can determine the amount of time that the
signal is high or low as follows:
1.
2.
3.
Bar Graph
The analog bar graph functions like the needle on an
analog meter, but without the overshoot. The bar graph
updates 40 times per second. Because the graph
responds 10 times faster than the digital display, it is
useful for observing momentary changes, for making
peak and null adjustments and for observing rapidly
changing inputs. The graph is not shown for capacitance,
frequency counter functions, temperature, or peak min
max.
The number of lit segments indicates the measured value
and is relative to the full-scale value of the selected
range.
30
Measure the signal's frequency by pressing G
once.
Press
in milliseconds (ms)
Press E to toggle between the signal’s positive
or negative pulse.
G
two more times to measure pulse width
In the 60 V range, for example, the major divisions on the
scale represent 0, 15, 30, 45, and 60 V. An input of -30 V
lights the negative sign and the segments up to the
middle of the scale.
The bar graph also has a zoom function, as described
under "Zoom Mode".
Zoom Mode (Power Up Option Only)
To use the Rel Zoom Bar Graph:
1.
2.
3.
Uses for the Zoom Mode
The relative mode, combined with the increased
sensitivity of the bar graph's zoom mode, helps you make
fast and accurate zero and peak adjustments.
Hold down F while turning the Meter on. The
display reads “2rEL”.
Select the relative mode by pressing F again.
The center of the bar graph now represents zero and
the sensitivity of the bar graph increases by a factor
of 10. Measured values more negative than the
stored reference activate segments to the left of
center; values more positive activate segments to the
right of center.