114
N9912A FieldFox User’s Guide
o
Segment Count
Sets the number of traces to record, after which the
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.
o
FreqMaskTrigger
Sets the power level which will trigger a recording. Set
these power levels (mask) exactly as you would set Limit Lines. (Learn how
on page 145.) With
Record ON
, when any data point measurement is higher
than an upper limit, or lower than a lower limit, recording begins. See
Frequency Mask Trigger Configuration in the following section to learn how
to configure the mask.
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
:
o
When a mask limit is exceeded, subsequent traces are recorded until the
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.
o
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.
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.
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 153.
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
Record Playback Setup
Then
New Session
or
Recall
an existing session. The current mask appears as
soon as a session is opened.
Then
FreqMaskTrigger Configuration
Then choose from the following
Summary of Contents for FieldFox N9912A
Page 15: ...Preparing for Initial Use of Your New FieldFox 15 Take the FieldFox Tour Front Panel ...
Page 194: ...194 N9912A FieldFox User s Guide Batteries Safe Handling and Disposal ...
Page 195: ...Safety Considerations 195 Inspired Energy Battery ...
Page 196: ...196 N9912A FieldFox User s Guide ...
Page 197: ...Safety Considerations 197 ...
Page 198: ...198 N9912A FieldFox User s Guide ...
