Mixed signal option (MSO, R&S RTP-B1)
R&S
®
RTP
926User Manual 1337.9952.02 ─ 12
14 Mixed signal option (MSO, R&S RTP-B1)
The Mixed Signal Option R&S RTP-B1 adds logic analyzer functions to the classical
oscilloscope functions. Using the MSO option, you can analyze and debug embedded
systems with mixed-signal designs that use analog signals and correlated digital sig-
nals simultaneously.
The Mixed Signal Option provides 16 digital channels grouped in two logic probes
(pods) with 8 channels each. The instrument ensures that analog and digital wave-
forms are time-aligned and synchronized so that critical timing interactions between
analog and digital signals can be displayed and tested. The automatic alignment com-
pensates the skew between the probe connectors of the analog channels and the
probe boxes of the digital channels.
14.1 Digital channels and parallel buses
Each digital channel can be displayed on the screen and used as trigger source. Digital
channels may be grouped and displayed as a parallel bus. Up to four parallel buses
can be configured; and two bus types are supported: clocked bus and unclocked bus.
The clocked bus is available only on parallel bus 1 and 2. Each digital channel can be
assigned to one active parallel bus only, the instrument disables conflicting buses auto-
matically.
You can display each bus and use it as trigger source, as well. For each active parallel
bus, the corresponding signal icon appears on the signal bar and indicates the
assigned digital channels. Individual digital channels do not have a signal icon.
If one or more parallel buses are active, the roll mode is not available.
14.1.1 Parallel buses - configuration
Access: "Menu" > "Logic" > "Setup" tab
Digital channels can be displayed individually, and they can be grouped and displayed
as a parallel bus. You can configure and enable up to 4 parallel buses. Each digital
channel can be assigned to one active parallel bus only, the instrument disables con-
flicting buses automatically.
For clocked buses, you can display the decoded data in a result box.
If you have configured several parallel buses and you want to modify the settings,
make sure that the tab of the correct bus is selected, and disable the bus before you
change the settings.
14.1.1.1 Setup
Access: "Menu" > "Logic" > "Setup" tab
Digital channels and parallel buses
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