![Teledyne Lecroy Frontline 802.11 Скачать руководство пользователя страница 68](http://html1.mh-extra.com/html/teledyne-lecroy/frontline-802-11/frontline-802-11_hardware-and-software-manual_1080958068.webp)
4.2.6 Providing Context For Decoding When Frame Information Is Missing
There may be times when you need to provide information to the analyzer because the context for decoding a
frame is missing. For example, if the analyzer captured a response frame, but did not capture the command frame
indicating the command.
The analyzer provides a way for you to supply the context for any frame, provided the decoder supports it. (The
decoder writer has to include support for this feature in the decoder, so not all decoders support it. Note that not
all decoders require this feature.)
If the decoder supports user-provided context, three items are active on the
Options
menu of the
Control
window and the
Frame Display
window. These items are
Set Initial Decoder Parameters
,
Automatically
Request Missing Decoding Information
, and
Set Subsequent Decoder Parameters
. (These items are
not present if no decoder is loaded that supports this feature.)
Set Initial Decoder Parameters
is used to provide required information to decoders that is not context
dependent but instead tends to be system options for the protocol.
Choose
Set Initial Decoder Parameters
in order to provide initial context to the analyzer for a decoder. A
dialog appears that shows the data for which you can provide information.
If you need to change this information for a particular frame :
1. Right-click on the frame in the Frame Display window
2. Choose Provide <context name>.
Alternatively, you can choose
Set Subsequent Decoder Parameter
from the
Options
menu.
3. This option brings up a dialog showing all the places where context data was overridden.
4. If you know that information is missing, you can't provide it, and you don't want to see dialogs asking for it,
un-check
Automatically Request Missing Decoding Information.
5. When unchecked, the analyzer doesn't bother you with dialogs asking for frame information that you don't
have. In this situation, the analyzer decodes each frame until it cannot go further and then simply stop
decoding.
4.3 Analyzing Protocol Decodes
4.3.1 The Frame Display
To open this window
Click the
Frame Display
icon
on the
Control
window toolbar, or select
Frame Display
from the
View
menu.
Frame Display
Panes
The
Frame Display
window is used to view all frame related information. It is composed of a number of
different sections or "panes", where each pane shows a different type of information about a frame.
l
- The
Summary Pane
displays a one line summary of each frame for every protocol found in
the data, and can be sorted by field for every protocol. Click
for an explanation of the symbols next to the
frame numbers.
TELEDYNE LECROY
Chapter 4 Capturing and Analyzing Data
62
Frontline 802.11 Hardware & Software User Manual
Содержание Frontline 802.11
Страница 1: ...Hardware and Software User Manual Revision Date 12 14 2016 ...
Страница 24: ...18 Frontline 802 11 Hardware Software User Manual TELEDYNE LECROY Chapter 2 Getting Started ...
Страница 52: ...46 Frontline 802 11 Hardware Software User Manual TELEDYNE LECROY Chapter 3 Configuration Settings ...
Страница 154: ...148 Frontline 802 11 Hardware Software User Manual TELEDYNE LECROY Chapter 4 Capturing and Analyzing Data ...
Страница 204: ...198 Frontline 802 11 Hardware Software User Manual TELEDYNE LECROY Chapter 7 General Information ...
Страница 205: ...Appendicies Appendix A Application Notes 200 Frontline 802 11 Hardware Software User Manual 199 ...
Страница 207: ...Appendicies TELEDYNE LECROY Frontline 802 11 Hardware Software User Manual 201 ...
Страница 217: ......