LeCroy USB Mobile HS, Руководство пользователя

Страница: 114 / 154

Chapter 10: Recording Options USB MobileHS User Manual
106
LeCroy Corporation
10.1 General Recording Options
The General Recording Options allow you to select or adjust the recording type, the
buffer size, the amount of post-trigger recording, and the trace filename and path.
Recording Type
The Recording Type box presents three options that allow you to set how USB Mobile HS
begins and ends a recording.
The options are: Snapshot, Manual Trigger, and Event Trigger.
Snapshot
A Snapshot is a fixed-length recording whose size is determined by the Buffer Size box
in the Recording Options dialog.
Recording begins when is clicked and ends when the buffer is full.
You can stop recording by clicking the Stop button.
Manual Trigger
A Manual Trigger is a recording whose trigger point is caused by pressing the trigger
button on the front panel.
Recording begins when you click on the Tool Bar. Recording continues in a circular
manner within the limits set by the buffer size.
Recording ends when is clicked on the Tool Bar or after post-trigger memory has
been filled following depression of the trigger button on the front panel.
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.
Options
Truncate Data Fields allows data fields to be truncated during recording to save
Analyzer memory and allow recording of more packets. Enter a minimum data length
value in the Bytes box. USB
Mobile HS truncates the data to the stated value or slightly
larger.
Note: Truncation of data may cause incorrect transaction or transfer decoding.
Beep When Trigger Occurs causes the computer connected to the USB Mobile HS to
beep three times when a trigger condition is first detected.