Serial bus analysis
R&S
®
RTM3000
300User Manual 1335.9090.02 ─ 09
The identifier byte consists of 6 bits for the frame identifier and two parity bits. This
combination is known as protected identifier.
Trigger
The R&S RTM3000 can trigger on various parts of LIN frames. The data line must be
connected to an input channel, triggering on math and reference waveforms is not pos-
sible.
You can trigger on:
●
Frame start (synchronization field)
●
Specific identifier or identifier range
●
Data pattern in the message
●
Wake up signal
●
Checksum error (error in data), parity error (error in identifier)
13.6.2 LIN configuration
The correct setup of the protocol parameters and the threshold is the condition for
decoding the signal.
To set up and decode a LIN signal
1. Press the [Protocol] key in the Analysis area of the front panel.
2. Select the bus that you want to use: B1, B2, B3 or B4.
3. Select the "Bus Type" = LIN.
4. Select "Configuration".
5. Select the "Source", the channel to which the input signal is connected.
6. Set the threshold:
● Tap "Find Threshold". The instrument evaluates the signal and sets the thresh-
old.
● Enter the threshold value in the numeric field.
7. Set the other signal parameters according to the signal characteristics. For details
on settings, see "LIN Configuration Settings" on page 301 below.
8. In the "Bus" menu, enable "Decode".
LIN (option R&S RTM-K3)
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