Protocol analysis
R&S
®
RTP
914User Manual 1337.9952.02 ─ 12
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SEARch:RESult:DDR:FRAMe<m>:FLD<n>:VAL? on page 2182
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SEARch:RESult:DDR:FRAMe<m>:NWRDs? on page 2183
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SEARch:RESult:DDR:FRAMe<m>:STARt? on page 2183
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SEARch:RESult:DDR:FRAMe<m>:STATe? on page 2183
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SEARch:RESult:DDR:FRAMe<m>:STOP? on page 2184
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SEARch:RESult:DDR:FRAMe<m>:TYPE? on page 2184
13.23.2.3 Searching for DDR data
Prerequisite: A serial bus is configured for the DDR signal to be decoded and ana-
lyzed.
The search for events is set up in the following way:
1. Press the [Protocol] key and select the "Shortcuts" tab.
2. If the dialog box does not contain a search entry, tap the "Add" icon to create one,
as described in "To create a user-defined search" on page 463.
3. Tap "Source" and select the serial bus that is set to DDR (e.g. "SB1", unless
already selected).
The search dialog for DDR protocol analysis is opened.
4. Specify search criteria according to Chapter 13.23.2.1, "DDR search setup",
on page 911.
5. To acquire a waveform, press [Single].
The R&S RTP performs a DDR decode according to the thresholds and protocol
settings of the associated serial bus source (here in our example SB1).
6. To start searching the acquired waveform for specific events, tap "Enable" in the
search setup dialog:
The R&S RTP displays the "Search Results" box that lists the detected events.
For information on how to configure the search results presentation and how to navi-
gate the search results, see also "To display search zoom windows" on page 470.
13.23.3 DDR decode results
When the configuration of the serial bus is complete, the signal can be decoded:
1. In the "Protocol" dialog > "Setup" tab, enable "Decode".
2. In the "Protocol" dialog > "Display" tab, select additional result display settings:
"Show decode table" and "Show binary signals".
For a description of the display settings, see also Chapter 13.1.3, "Display",
on page 514.
DDR (option R&S
RTP-K91/K93 )
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