BIRD SITE ANALYZER SA-1700EX, Operating Instructions Manual

Page: 44 / 171

Bird Site Analyzer
30
Set the Graph Display Type
When the Site Analyzer collects data during a sweep,
you can specify that it measure 238 data points, 475
data points, or 949 data points. Selecting 475 data
points takes twice as much time to sweep as 238
points, and 949 points takes four times as much time
to sweep as 238 points.
The Site Analyzer display screen graph area can dis-
play only 238 points because of its physical pixel limi-
tations. However, if the trace contains 475 points or
949 points, all points are represented on the display.
There are three modes available to display the data
points for the trace - envelope, maximum, and mini-
mum. For 238 data points, there is no difference in the
display for each of the three modes because each data
point occupies a separate pixel. For 475 data points
and 949 data points, the envelope mode displays all
data points, the maximum mode displays only the
highest (peak) magnitude data point for each pixel,
and the minimum mode displays only the lowest (min-
imum) magnitude data point for each pixel.
Note:
When you save (or download) a trace, all
measured data points (238, 475, 949) are saved (or
downloaded). The display modes (envelope, maximum,
minimum) are for the Site Analyzer display only and
are not saved (or downloaded) with your trace.
1. Turn on the instrument and enter the Measure
Match mode (refer to Select the Measure Match
Mode, page 19).
2. Select Frequency (refer to Setting the Measure-
ment Frequency, page 20)
3. Calibrate the instrument (refer to Calibration,
page 17).
4. Follow the numbered steps in Figure 9, page 31 to
set the graph display.