Agilent Technologies FieldFox N9912A User Manual page 103

Frequency Mask Trigger Configuration
Create or recall a Frequency Mask to be used with the FreqMaskTrigger feature.
NOTE The Mask file is saved to, and recalled from, the Save /Recall Storage Device
location – NOT from the Record Playback Storage Device location. These are two
different settings. Learn how to set the Save /Recall Storage Device on page 136.
A mask that is in use during a recording is NOT saved with the recording and
does NOT automatically appear during playback. Like Limits Lines, it is saved
and recalled with a state file.
Although they are created in the same manner, Limit Line files and FreqMask
files can NOT be used interchangeably.
 Press Trace 6
 Then
 Then
 Then
 Then choose from the following
Interference Analyzer (SA Mode) Option 236
Sets the number of traces to record, after which the
Segment Count
o
recording will automatically pause. Press Pause/Resume or Record to
capture another N traces, or Stop to end recording. Default is OFF, which is
NO limit to the number of traces to be recorded. When set, a counter appears
in the lower-left corner which counts UP to the specified number of
recordings.
FreqMaskTrigger Sets the power level which will trigger a recording. Set
o
these power levels exactly as you would set Limit Lines. (Learn how on page
130.) When any data point measurement is higher than an upper limit, or
lower than a lower limit, recording begins.
Typically you would use FreqMaskTrigger with Segment Count, but it can
also be used with Record Time and Record Interval.
When used with Segment Count:
When a mask limit is exceeded, subsequent traces are recorded until the
o
specified segment count is reached. Once segment count is reached,
exceeding another mask limit will again cause traces to be recorded until
the segment count is reached, and so forth.
To record only those traces that exceed the limit, set Segment Count to 1
o
To record ALL traces after a limit is exceeded, set Segment Count OFF.
o
When used with Record Time, the timer counts down even when traces are
not being recorded (limits are not being exceeded). Recording starts when a
limit is exceeded and stops when the timer reaches 0.
When used with Record Interval, a trace is recorded when a limit is
exceeded, then no recordings during the specified „wait‟ interval, then the
next trace is recorded, followed by another time delay, and so forth. This
pattern repeats indefinitely if Segment Count is OFF, or (if ON) until
Segment Count is reached.
Record Playback Setup
or
New Session Recall
soon as a session is opened.
FreqMaskTrigger Configuration
an existing session. The current mask appears as
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