Serial Trigger and Decode
119
Trigger Settings
1.
Use the touchscreen to select
Trigger Setting
.
2.
Use the touchscreen to select
Condition
. The following conditions are available:
•
Start
: the oscilloscope will be triggered on the start of message (after 56
synchronization ticks). You can select the type of the message: Fast Channel
Message, Slow Channel Message or any.
•
Slow Channel
: the oscilloscope will be triggered on a Slow Channel Message.
•
Fast Channel
: the oscilloscope will be triggered on a Fast Channel Message when
the Status & Communication nibble and the data nibbles match the specified
values.
–
State can be selected in the hexadecimal range of 0x0 to 0xF. If the value is
selected as "0xX", the state is ignored.
–
Compare Type can be specified as Equal, Not Equal, Less than, Less or Equal,
Greater than, Greater or Equal, in Range of, out of Range.
–
At Pos determines the start position of the trigger data. If selected as Value,
you need to set Nibble Pos in the decimal range of 0 to 5.
If selected as Don’t
care, the oscilloscope will be triggered at the first data which matches the
specified condition.
–
Nibble Len can be selected in the decimal range of 1 to 6. It is associated with
the Nibble Pos.
–
Data can be selected in hex. The range is associated with the Nibble Pos. If
the data is selected as "0xXX", the data is ignored.
•
Slow Channel
: the oscilloscope will be triggered on a Slow Channel Message.
–
Slow Type
: Select the type of slow condition.
Short Serial Message
: The 16-bit message consists of a 4-bit Message ID
nibble, 2 nibbles (1 byte) of data, and a CRC checksum nibble. If ID and
data match, then trigger on the end of CRC bit.
Figure 10.54
SENT Trig-
ger Settings
