Protocol analysis
R&S
®
RTO6
966User Manual 1801.6687.02 ─ 05
Threshold
Sets the threshold value for the digitization of the DQ/DQS lane.
There are two ways to set the thresholds:
●
"Threshold"
Enter individual values for each line directly in the fields.
●
"Find thresholds"
Executes the measurement of reference levels and sets the thresholds to the mid-
dle reference level of the measured amplitude.
Remote command:
BUS<m>:DDR:DATA:
THReshold on page 2388
BUS<m>:DDR:STRBe:THReshold on page 2389
BUS<m>:SETReflevels on page 1671
Hysteresis
Sets a value for the hysteresis of the respective lane.
Remote command:
BUS<m>:DDR:DATA:HYSTeresis on page 2387
BUS<m>:DDR:STRBe:HYSTeresis on page 2388
Bit rate (for eye diagram)
Declares the nominal bit rate of the data signal for the DDR eye diagram analysis.
See also, Range UI, Position UI.
Remote command:
BUS<m>:DDR:BITRate on page 2389
Show thresholds
If enabled, the threshold levels are displayed in the diagram.
Remote command:
BUS<m>:THReshold on page 1671
13.27.1.2 Display settings
Access: [Bus] > "Display" tab.
For common display settings, see Chapter 13.1.3, "Display", on page 487
.
T
o enhance the decode possibilities of the DDR protocol, you can use an additional
setting in the "Display" tab: "Decode layer".
DDR (option R&S RT
O6-K91 )
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