User`s manual

Page 22 - AOR HAWK 5000 for Windows
TM
User’s Manual
NOTE: The display on your PC may slow down slightly when using
the sonogram because of the extra graphics processing that is required.
The following menu options are provided with the sonogram display:
Clear
This blanks the sonogram display.
Threshold
This sets the threshold that signals must cross in order to be displayed. If a
signal is above the threshold, it appears as a black trace on the sonogram
display. If it is below the threshold, the signal does not appear on the display.
The following dialog is used to set the threshold:
The range is determined by the current gain setting (Low: -60 to -10 dBm,
High: -90 to -40 dBm). The default is 6 dBm above the lowest possible value.
Use the scroll bar to set the level you require and click on OK to accept or
Cancel to abort.
History
The history dialog contains a list of all the centre frequencies that have been
used since the dialog was opened. You can return to any of the previous
centre frequencies simply by double-clicking on the frequency value in the list.
The history dialog looks like: