User guide

32 Chapter 4: Menus and Tools
AirMagnet Spectrum XT User Guide
To replay captured data that has just been displayed on the screen:
1) Click (Switch to Instant Playback) on the toolbar. The application will start
to play back the capture data that has just been displayed on the screen. See Figure 4-3.
Figure 4-3: Instant playback of capture data
The application can instantly play back data captured in the last two minutes at most. The
replay stops when the slider reaches the end. You can use the Play, Pause, Stop buttons to play
the data back and forth. You can also set the starting point for the playback by dragging the
slider to anywhere they want.
You can also save as a .amt file the data that has just been replayed by clicking (Save
Capture), or switch back to live capture mode by clicking (Switch to Live
Capture).
If you click Save Capture, the application will open the Save As dialog box so that you can
save the data. However, the application stays in Instant Playback mode and automatically
restart instant playback once the file is saved. You must click the Switch to Live Capture
button in order to get out the Instant Playback mode.
Recording a Live Capture Data
Normally, the application automatically sends all data it has captured to the buffer. Due to the
buffer size, the application discards old data as new data come in. However, if users want to
retain data captured during a session, they can let the application to send the data to the
system’s hard drive. This is the so-called “stream to file” feature.
To use this feature, users must set the Max Live Capture Streaming File Size (MB) which is 500
MB by default. Users can set it to any value (up to 2 GB) so long as they have enough hard
drive space to accommodate it. This can be done using Configure>General> Max Live
Capture Streaming File Size (MB).
To record capture data:
1) Click (Start Recording).
The application will start record live capture data to the PC’s hard drive. The recording
automatically stops when the Max Live Capture Streaming File Size is reached. At that point,
you will be prompted to save the file. You can either save the data to a .amt file or decline the
prompt. However, all recorded data will be lost unless you save them. See the following
section on how to save a recorded data to a file.
Saving Recorded Data to File
You will be prompted to save the data recorded to your PC’s hard drive when the recording
has reached the Max Live Capture Streaming File Size you have specified or when you
interrupt the recording by clicking (Stop Recording and Save Capture).
All recorded data are saved in a .amt file which can be played back in the application for
further analysis. You must name the file and specify the location where the file is saved.