Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 267)

USB Protocol Suite User Manual 267
General Recording Options Teledyne LeCroy Corporation
Event Trigger
Recording begins when you click on the Tool Bar.
Recording continues in a circular manner within the limits set by the buffer size until an
event is detected that meets the Trigger conditions specified in the Triggering Options
and the defined amount of data has been recorded after the Trigger Event.
10.2.3 Recording Channels (Voyager and Advisor T3)
You can select USB 2.0 and/or USB 3.0 as the recording channel. Both can be captured
simultaneously. Do NOT capture in 2.0 mode when 3.0 Clock/Speed selection is in any of
the slow modes, as these modes do not scale for USB 2.0 traffic.
If user selects different external trigger modes in the Recording Rules when doing
simultaneous USB 2.0/USB 3.0 captures, the trigger mode for USB 3.0 will be applied.
10.2.4 Recording Scope (Voyager, Advisor T3 and Mercury T2)
Select either:
 Conventional Single Buffer Recording: Select Buffer Size (see below). The ana‐
lyzer limits the data amount captured to the selected buffer size. Use the
Trigger Position slider (see below) to control the data amounts captured pre‐
trigger and post‐trigger.
OR
 Spooled Recording: Enter Maximum Disk Usage as an integer in gigabytes. The
spooled recording mode automatically stops the recording when the size of the
capture meets the Maximum Disk Usage value. The analyzer begins recording
data to the analyzer memory when the record button is pressed. The entire ana‐
lyzer memory (2 GB or 4 GB) is used to buffer data while simultaneously upload‐
ing the trace file to an attached storage device.
Set Recording Size Limits. If you use Snapshot, you can optionally use Record for an
elapsed time or Record a number of megabytes.
If you use Manual Trigger or Event Trigger, you can optionally use the Until Triggered, plus
options to enter post‐trigger limits by megabytes or elapsed time. These options allow
you to specify a trigger event to start the recording. When these options are used, the
trigger position slider is not active. The trigger event is within the first 100 packets. The
balance of the memory captures traffic occurring post trigger.
Note: You can use Snapshot, Manual Trigger, or Event Trigger trigger mode with either Recording
Scope: Conventional Single Buffer Recording or Spooled Recording.
Note: When capturing SuperSpeed traffic with Spooled Recording, the traffic rate may overflow the
system's ability to upload data to disk. In the event of overflow, the analyzer stops the recording
automatically, even if the trigger event has not yet occurred. This can occur in 3.0 traffic as well
as in 2.0 traffic. The analyzer does not drop data or leave gaps in the recording. Instead, it
automatically uploads all the traffic stored in memory. You must make sure that the traffic being
recorded does not overrun the buffer in this mode, by either adjusting the actual data