Instructions

Table Of Contents
Page 21
creates a pop-up menu that selects an action that will be performed when the limit
condition occurs. The options are None, Beep, Pulse Out, or Beep + Pulse Out.
Note that other actions (sweep triggering or log file entry) can also be created from the limits
condition. Further information on the Limits function is given in section 7.7.
creates a control screen from which a limit can be offset from its initial values. This
is particularly useful for limit patterns which would otherwise have to be recreated.
See section 7.7.4 for more information.
enables a pattern that was created for a particular centre frequency (e.g. a
modulation channel width limit pattern) to be applied to a different centre frequency.
Pressing the key fixes the pattern relative to the screen and displays a message of
“Lim Fix” on the top RH side of the graticule. See section 7.7.5 for more information.
4.5.5.1 Channel Marker Files
A Channel Marker file is a special case of a Limit Pattern file which produces only vertical lines
at frequencies defined within the file. See section 7.7.6
4.5.6 Overload Indication
Signal levels that are greater than the reference level can not be displayed and may cause
errors in the measurement.
More information about signal overload and measurement error is provided in section 7.1.
Limit
Action
Limit
Action
Limit
Offset
Limit
Fix/Unfix