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Serial Bus Analysis
R&S
®
RTB2000
200User Manual 1333.1611.02 ─ 03
Acknowledge ← Error
An acknowledgment error occurs when the transmitter does not receive an acknowl-
edgment - a dominant bit during the "Ack" slot.
Remote command:
TRIGger:A:CAN:ACKerror on page 407
CRC ← Error
CAN uses the Cyclic Redundancy Check (CRC), which is a complex checksum calcu-
lation method. The transmitter calculates the CRC and sends the result in the CRC
sequence. The receiver calculates the CRC in the same way. A CRC error occurs
when the calculated result differs from the received value in the CRC sequence.
Remote command:
TRIGger:A:CAN:CRCerror on page 407
Identifier condition
The identifier condition consists of the following settings:
●
ID Type
●
Comparison
●
Identifier value
Compare ← Identifier condition
Sets the identifier comparison condition: If the identifier pattern contains at least one X
(do not care), you can trigger on values equal or not equal to the specified value. If the
pattern contains only 0 and 1, you can also trigger on a range greater than or lower
than the specified value.
Remote command:
TRIGger:A:CAN:ICONdition on page 406
Bin / Hex pattern ← Identifier condition
Defines the identifier or data pattern in binary and hexadecimal format. To set an indi-
vidual binary bit or hex nibble (half byte), tap it and enter it via the on-screen keypad.
"Bin"
String containing the binary pattern with a maximum of 64 bits. Char-
acters 0, 1 and X are allowed.
"Hex"
String containing the hexadecimal pattern with a maximum of 8 bytes.
Characters 0 to F and X are allowed.
Remote command:
TRIGger:A:CAN:IDENtifier on page 406
TRIGger:A:CAN:DATA on page 407
Symbolic ID ← Identifier condition
If a label list with symbolic names was loaded and applied in the bus configuration, you
can select a symbolic name from the list instead of entering the numeric identifier. The
instrument triggers on the identifier of the selected node.
Data condition
The data condition consists of the following settings:
●
Length of the data pattern
●
Comparison
CAN (Option R&S RTB-K3)
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