About State And User Tags - Keysight N9912A User Manual

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 112.
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 109.
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 108) 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.
During Playback
The State setting changes listed above are NOT allowed during playback.
However, all other display settings can be changed during playback to help you
analyze the recorded data.
The recordings can be played into different measurements such as Channel Power or
Occupied BW. When the recorded data is not compatible with the measurement
type, a
The data can also be played back in Spectrogram and Waterfall displays.
Record/Playback Exceptions
 Markers can be activated and moved to help analyze recorded data. However,
 Field Strength Corrections is saved with the session file and it is also allowed
Interference Analyzer (SA Mode) - Option 236
Session Data
Trace Record Limit <n>
Empties that session of recorded traces. Learn more in
Clear All Records
Manage Sessions on page 112.
message will appear on the screen.
MEAS UNCAL
marker position control is only available when playback is Paused.
during playback. Learn about this Field Strength Corrections on page 75.
(n = Max number of traces that can be recorded).
107