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Linbus trigger setup detail, Operator's manual – Teledyne LeCroy Serial Data Debug Solutions User Manual

Page 75

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Operator's Manual

919586 RevA

75

Select condition values by touching fields (using your finger, or use a mouse pointer). A pop-up is shown where
you can choose from Equal, Not Equal, Less than, Less than or Equal to, Greater than, Greater than or Equal to,
In Range, or Out Range condition values.

LINbus Trigger Setup Detail

The following topic provides specific control settings for a LINbus Trigger.

The previously numbered LINbus trigger sections correspond with the following explanations.

1.

S

OURCES

S

ETUP

DATA - The pop-up dialog is used to select the appropriate channel or EXT input for each. Set this field up
with caution or your trigger may not function correctly.

Threshold (Trigger) - Adjust the vertical level for the trigger. Much like an Edge trigger, a user must
specify the level used in order to process the incoming signals and determine whether the desired serial
data pattern is meeting the set trigger condition.

2.

LIN

S

ETUP

Bitrate - The LIN trigger can be configured to trigger on LIN busses at several different bitrates including
1.2 kb/s, 2.4 kb/s, 4.8 kb/s, 9.6 kb/s, 10.417 kb/s, and 19.2 kb/s.

3.

T

RIGGER

T

YPE

The LIN trigger can be configured to trigger on simple Start of Frame (Break) conditions, ID only, or
complete ID+DATA conditions with DATA conditions other than equals. Some Error Frame triggering is
also supported.

Choose a desired Trigger Type and the trigger dialog changes based on the selection made.

For example, the following trigger selections disable or enable fields on the Setup Format, Frame ID
Setup
, Data Pattern Setup, and Checksum Error Setup... (Checksum error only for Error trigger type)
sections of the trigger dialog:

Break - When selected, the Setup Format, Frame ID Setup, and Data Pattern Setup fields are disabled.

Frame ID - When selected, Setup Format and Frame ID Setup fields are enabled, and the Data Pattern
Setup fields are disabled.

ID + Data - When selected, Setup Format, Frame ID Setup, and the Data Pattern Setup fields are enabled.

Error - When selected, Setup Format fields are enabled and the Frame ID Setup fields are disabled. The
Pattern Setup fields (step 6a, as follows) aren't shown (and are therefore disabled). Instead, the
Checksum Error Setup fields (step 6b, as follows) are shown and enabled.