R&S RTO6, User Manual

Page: 581 / 2677

Protocol analysis
R&S
®
RTO6
581 User Manual 1801.6687.02 ─ 05
A math waveform can be used, for example, if you probe on CAN-High and CAN-Low
using two single-ended probes, and the difference between high and low is calculated
and displayed using a math waveform.
Remote command:
BUS<m>:CAN:DATA:SOURce
on page 1795
Type
Selects the CAN-High or CAN-Low line. CAN uses both lines for differential signal
transmission.
If you measure with a differential probe, connect the probe to both CAN-H and CAN-L
lines, and select the data "Type" =
CAN-H .
If you use a single-ended probe, connect the probe to either CAN_L or CAN_H, and
select the data type accordingly.
Remote command:
BUS<m>:CAN:TYPE
on page 1796
CAN-FD
Enables the CAN FD protocol configuration and displays additional CAN FD parame-
ters.
The setting is available in CAN FD option.
Remote command:
BUS<m>:CAN:FDATa:ENABle
on page 1798
BUS<m>:CAN:FDATa:FRAMe<n>:STANdard?
on page 1809
Standard
Only available for CAN FD buses.
"Non-ISO" Signals are decoded according to the the Bosch CAN FD protocol.
"ISO" Signals are decoded according to the the ISO CAN FD protocol. This
protocol has an additional stuff count field before the CRC sequence.
Remote command:
BUS<m>:CAN:FDATa:PSTandard
on page 1796
Threshold
Sets the threshold value for digitization of the signal. If the signal value on the line is
higher than the threshold, the signal state is high (1 or true for the boolean logic). Oth-
erwise, the signal state is considered low (0 or false).
There are several ways to set the threshold:
●
"Threshold"
Enter the value directly in the field.
●
"Autoset"
Starts software algorithms for determining the signal threshold levels and bitrate.
●
"Find thresholds"
Executes the measurement of reference levels and sets the thresholds to the mid-
dle reference level of the measured amplitude.
CAN and CAN FD (option R&S RTO6-K520)