Serial Trigger and Decode
97
Note:
10.5
LIN Trigger and Serial Decode
10.5.1
Setup for LIN Signals
There are two steps of setting the LIN signal, connecting the signal to oscilloscope, specifying the parameters of each
input signal.
1.
Press the
Decode
key to enter the
DECODE
function menu.
2.
Touch
Decode
and select the desired slot (Decode1 or Decode2).
3.
Touch
Protocol
and then select
LIN
by turning Universal Knob.
4.
Touch
Signal
to enter the
SIGNAL
menu as shown in figure
??
.
5.
Touch
Source
to select the channel that is connected to the LIN signal.
6.
Touch
Threshold
and set the LIN
signal’s
threshold voltage level by
Universal Knob
. The threshold voltage level is
for decoding, and it will be regard as the trigger voltage level when set the trigger type to serial.
7.
Touch
to return previous menu.
8.
Touch
Configure
to enter the
BUS CONFIG
menu.
9.
Touch
Baud
to set baud rate.
•
The baud rate can be set as predefined value.
•
If the desired baud rate is not listed, select
custom
option, press the Custom and turn the
Universal Knob
to
set the desired baud rate.
10.5.2
LIN Trigger
This section provides a brief introduction and description for the operation of the LIN trigger.
Trigger Condition
•
Break
—
the oscilloscope will be triggered at the position of break
field’s
break delimiter.
•
ID
(Frame ID)
—
the oscilloscope will be triggered at the position of identifier
field’s
stop bit, if the value of a
frame’s
ID is equal to specified value. (Note: If the
data’s
value is 0xXX, any data value will be matched)
•
ID + Data
(Frame ID and Data)
—
the oscilloscope triggers when a frame with an ID and data equal to the selected
values is detected. Use the
Universal Knob
to select the value for the ID, Data1 and Data2.
a.
The
ID’s
value is the same as set value.
b.
If you have set either Data1’s or Data2’s value, and the signal has a data is the same as that value. If you have
set both Data1’s and Data2’s value, the signal should
have
two consecutive data, the first data’s value is Data1,
second data value is Data2.
If
the data’s value
is 0xXX, any data value will be matched
•
Data Error
—
the oscilloscope will be triggered when errors (such as ID check error, checksum error, sync byte field
error) are detected.
Содержание 2560B Series
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