Gigahertz Solutions NFA 30M Operating Manual page 13

3D-value. The threshold value for an edge display can be defined in the menu option
"Channel/Set edge criteria".
"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.
Channel
Set Edge Criteria (experimental!)
This feature is new and its intention is to facilitate professionals the dicussion and
analysis of "dirty electricity" beyond today's definition. Activate "Edge Display" in
the menu option "View" to use this function.
This function allows you to define a threshold value with which a spike can be
marked directly in the "Edge Display" of the plot. This threshold can be selected in-
dividually for every channel. Standard values have been pre-selected as defaults.
rate in V/m, mG or nT per second. This is independent of the measuring intervals. A
hypothetical interval of 1 second would give that increment. This permits to compare
results recorded with different recording intervals.
Absolute threshold = Marks a rise of measured field intensity between adjacent
points in time by a user defined threshold level in V/m, mG or nT. Any rise beyond
this absolute threshold value will be marked.
The selected edge criteria will be graphically displayed on the top of the plotted data
section and will appear numerically in the field channel statistical data section under
edges per hour for that particular time span. All edge markings displayed appear in
real time and allow for a quick visual analysis.
© Gigahertz Solutions GmbH
When clicking „Set edge criteria" the following win-
dow opens. Description:
Absolute increment = Marks a rise of measured field
intensity between adjacent points of time by a user
defined absolute increment level in V/m, mG or nT
Relative steepness = Marks a rise of measured field
intensity between adjacent points in time by a user
defined factor or multiple.
Slope = Marks a rise of measured field intensity be-
tween adjacent points in time by a user defined slope
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Made in Germany
February 2016