Gigahertz Solutions NFA 1000 Operating Manual page 23

The light-blue field underneath the statistical channel data represents the frequency
distribution of the measured intensities of the specific channel („Histogram"). It is
self-scaling and can be interpreted as follows:
 On the left side of the x-axis a formula calculates and plots how often the mini-
mum value has occurred in a given time interval, and similarly on the right side
for the maximum value.
 The higher point marks the measured intensity - found most often. The lower
points indicate a specific value very seldomly measured.
Menu
Edit
"Copy all": Copies the plotted data area as well as the drop-down of the "Statis-
tics/Channels" section into the buffer – from here it can be inserted directly into your
measurement protocol at any point of your choice. This is similar to a screen shot.
All other edit options are self explanatory.
View
"Edge Display"
Choose the menu option "View/Edge Display" to activate the edge display. The
edge display option will help find important field strength fluctuations. Steep edges
are marked in the diagram in the colour corresponding to each channel – the
marked channel will be bolded, the others won't. This way you will always have an
overview of what's going on in the other channels, even if your focal point is, for in-
stance, the 3D-value. The threshold value for an edge display can be defined in the
menu opiton "Channel/Set edge crieteria".
"Set Times"
Choose the "Set Times" option to scale the graphic to a defined time segment.
"Y-Scale"
 Automatic – The y-axis will be scaled automatically to give the best display of the
area selected for analysis.
 Manual – The y-axis scaling can be manually controlled in this mode. Allows for
and will assist in analyzing small values (e.g. those over 2 kHz) overshadowed by
other very strong field intensities.
"All" – zooms out the x-axis and displays the complete data set on the data plot.
The keyboard "A" keys can alternatively be used.
Use the arrow keys to take over the functions of the mouse.
© Gigahertz Solutions GmbH
- 23 -
350-027_NFA1000400-6-2_EN-von-susanne as of October 2011