Rohde & Schwarz RTE Series - Page 620

Protocol analysis
R&S
®
RTE
620User Manual 1326.1032.02 ─ 20
Bus plus 2.5 V
Threshold high
Threshold low-A
+A
Bus minus
Idle 0 1 0 1 Idle
Single-endedDifferential
BP - BM
+2A
-2A
0 V
Threshold high
Threshold low
2.5 V
Threshold high
Threshold low
For measurements inside the FlexRay node (with "Source type" = "Logic"), each line
requires its threshold level.
There are two ways to set the thresholds: selection of a predefined value, or direct
entry of a value.
●
"Preset thresholds"
Selects default threshold voltages from a list. The predefined values depend on the
selected source type. The value is set to "Manual" if at least one threshold was
entered directly.
●
"Threshold high" and "Threshold low"
Upper and lower levels for single-ended or differential source types. You can enter
the values directly in the fields.
●
"Threshold data" and "Threshold enable"
Levels for data and enable line if there is logic source type. You can enter the val-
ues directly in the fields.
Note: If the sources are digital channels, the same threshold values are used for the
parallel and the serial buses. You can set the thresholds either in the parallel bus con-
figuration or in the serial bus configuration.
Remote command:
BUS<m>:FLXRay:PRSingle on page 1560
BUS<m>:FLXRay:PRDiff on page 1561
BUS<m>:FLXRay:PRLogic on page 1561
BUS<m>:FLXRay:THReshold<n> on page 1559
BUS<m>:FLXRay:THData on page 1560
BUS<m>:FLXRay:THENable on page 1560
BUS<m>:SETReflevels on page 1421
Polarity
Selects the wire on which the bus signal is measured if there is "Single-ended" mea-
surement: "Bus plus" or "Bus minus". The setting affects the digitization of the signal.
FlexRay (option R&S
RTE-K4)