Loading ...
Loading ...
Loading ...
8845A/8846A
Users Manual
3-14
As shown in Figure 3-1, the display will start plotting the readings across the plot area,
and the maximum, minimum, and elapsed time are displayed.
STOP
F1 F2 F3 F4 F5
caw057.eps
Figure 3-1. TrendPlot Display
To stop the TrendPlot session, press B or the STOP soft key.
To start the TrendPlot session over, press the STOP soft key followed by the
RESTART soft key.
Using the Histogram Function
The Histogram function provides a graphical representation of the standard deviation of a
series of measurements. The right two-thirds of the Meter’s display is used as a bar graph
chart. The vertical axis is a relative measure of the number of readings while 10 vertical
bars represent the standard deviation across the horizontal axis. The two center bars
indicates the number of readings that fall on either side of the average reading within the
1
st
standard deviation. The two bars on either side of the center two bars represent the
number of readings that fall within the 2
nd
standard deviation. The next two represent the
3
rd
standard deviation and so on to the 5
th
standard deviation.
The histogram function is helpful in looking at the standard distribution of the UUT.
While observing the bar graph display (see Figure 3-2), adjust the UUT variable control
to peak the center two bars of the histogram.
F1 F2 F3 F4 F5
caw056.eps
Figure 3-2. Histogram Display
In addition to the bar graph, the left third of the display also displays the number of
samples, the average, and standard deviation values.
To start a histogram session:
1. Set up the Meter for the desired measurement by selecting the function, and
connecting the signal to the Meter’s input.
2. With the Meter taking measurements, press J.
3. Press HISTOGRAM to start the session.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
Loading ...
Loading ...
Loading ...