About State And User Tags - Agilent Technologies FieldFox N9912A User Manual

You close the session when finished recording or playing. A session is also closed
when the FieldFox is Preset (or Mode Preset), an Instrument State is recalled, or
when Mode is changed from SA.
Each session is saved as a folder containing a set of files on the specified storage
device.
How long can a recording session last?
There are many variables that determine the possible length of a recording
session. But one key variable is the amount of available memory.
When a session is opened or a new session is initiated, an estimate is made of the
maximum number of traces that can be saved, based on the available disk space
and the current number of data points (resolution). Recording will stop when
that number is reached. This estimate always maintains 4 MB of available disk
space on the specified storage device. You can decrease the number of traces to
further limit recording. The resolution setting can NOT be changed after a
session is opened.
To maximize the amount of space that is available, save recorded traces to a USB
Flash drive or SD card. Learn how in Manage Sessions on page 105.
You can determine the length of time over which recording can occur by setting
the Record Interval (the time between recorded traces) and other settings. Learn
more in Recording Configuration on page 102.
To view and edit the maximum number of records
Just after opening or initiating a session...
 Press
 Then

FieldFox Setting Changes during Record and Playback
During Recording
When any of the following State settings are changed during recording, the State
counter is incremented (see About State and User Tags on page 100) and the
settings are saved to the Session file along with the first trace to be recorded
with the new setting. During playback, the trace and display annotation will
reflect the change on the screen.
State settings: Frequency Range, Resolution BW, Video BW, Zerospan Sweep
Time, Sweep Acquisition, Preamp On/Off, Attenuation, Detector, Average Type,
Trigger Settings, Independent Source.
Other display settings, such as Scale and Reference Level, can also be changed
during recording but are not saved with the session file. Think of these as
settings that help YOU see the recording and playback activity. They do NOT
change the data that is recorded.
Interference Analyzer (SA Mode) Option 236
Session Data
Trace Record Limit <n>
recorded).
Empties that session of recorded traces. Learn more in
Clear All Records
Manage Sessions on page 105.
(n = Max number of traces that can be
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