Teledyne Lecroy Frontline 802.11, Руководство по аппаратному и программному обеспечению

Страница: 143 / 223

1. Click once on the
Mixed Sides icon to put the display in mixed sides mode.
2. Click again to return to side over side mode.
3. You can right click in the center of the data display window to change between mixed and side over side
modes by selecting Display Sides Together . A check mark is displayed. Click on Display Sides
Together to remove the check mark and return to side-by-side display.
4. Right click in the sides panel on the right of the data display and select Display Sides Together . A check
mark is displayed. Click on Display Sides Together to remove the check mark and return to side-by-
side display.
4.4.7.5 List of all Event Symbols
By default, the Event Display shows all events
1
, which includes control signal changes, start and end of frame
characters and flow control changes. If you want to see only the data bytes, click on the All Events button . Click
again to display all events.
Click on a symbol, and the analyzer displays the symbol name and sometimes additional information in the status
lines at the bottom of the
Event Display window. For example, clicking on a control signal change symbol
displays which signal(s) changed.
In addition to data bytes, the events shown are (in alphabetical order):
Symbol Event
Abort
Broken Frame - The frame did not end when the analyzer expected it to. This occurs most often
with protocols where the framing is indicated by a specific character, control signal change, or
other data related event.
Buffer Overflow - Indicates a buffer overflow error. A buffer overflow always causes a broken
frame.
Control Signal Change - One or more control signals changed state. Click on the symbol, and
the analyzer displays which signal(s) changed at the bottom of the Event Display window.
Data Capture Paused - The Pause icon was clicked, pausing data capture. No data is recorded
while capture is paused.
Data Capture Resumed - The Pause icon was clicked again, resuming data capture.
Dropped Frames - Some number of frames were lost. Click on the symbol, and the analyzer
displays many frames were lost at the bottom of the Event Display window.
End of Frame - Marks the end of a frame.
Table 4.8 - Event Symbols
1
An event is anything that happens on the circuit or which affects data capture. Data bytes, control signal changes, and long
and short breaks are all events, as are I/O Settings changes and Data Capture Paused and Resumed.
Chapter 4 Capturing and Analyzing Data TELEDYNE LECROY
Frontline 802.11 Hardware & Software User Manual 137