Rohde & Schwarz SMM100A, User Manual

Page: 528 / 1088

General instrument functions
R&S
®
SMM100A
528 User Manual 1179.1341.02 ─ 05
Grouped according to their impact, the R&S SMM100A provides the following connec-
tor types:
●
Chapter 11.2.5, "Global connectors settings" , on page 534
●
Chapter 11.2.2.2, "Baseband local connectors" , on page 529
Grouped according to their impact on the baseband or on the RF signal, the same con-
nectors are divided into:
●
Chapter 11.2.3, "Trigger marker clock settings" , on page 531
●
Chapter 11.2.4, "RF connectors settings" , on page 533
11.2.1 Required options
The R&S SMM100A is always equipped with six User interfaces.
Additional options are not required.
11.2.2 About local and global connectors
Signal to connector mapping
As described in Chapter 4.4.1, "Basics on signals, modulation types and filters" ,
on page 88, the R&S SMM100A uses several internally generated and externally sup-
plied signals. To handle these signals and more than two baseband signals, the
R&S
SMM100A introduces the concept of signal to connector mapping. The available
signals are not dedicated to a particular connector but can be mapped to one or more
globally shared User or local T/M/C connectors.
The signal mapping and the polarity, the trigger threshold, and the input impedance of
the input connectors are configurable parameters. The connectors settings are grou-
ped in the
Global connectors settings and Local connectors settings dialogs.
For an overview of the required configuration steps, refer to "General Workflow"
on page 541.
11.2.2.1 Global connectors
The R&S SMM100A is equipped with User x interfaces which can be freely assigned a
selection of signals and which can be configured as both inputs and outputs.
A common threshold and input impedance is effective for all trigger and clock signal
inputs provided at the User connectors. The settings influence the custom digital mod-
ulations, the generation of waveforms or multicarrier signals, and all digital standards.
Also, the R&S SMM100A is equipped with one Inst Trig connector. The instrument trig-
ger setting influences all sweeps and is effective in the list mode.
See Chapter 7.10, "Varying the RF signal in list or sweep mode" , on page 319.
Configuring local and global connectors