R&S SMJ100A, Operating Manual

Page: 383 / 874

Instrument Function
R&S
®
SMJ100A
367 Operating Manual 1403.7458.32 ─ 14
Remote command:
[:SOURce<hw>]:BB:DM:CLOCk:MULTiplier
on page 634
Measured External Clock
Displays the measured frequency of the external clock signal. This enables the user to
permanently monitor the frequency of the externally introduced clock.
This information is displayed only if the external clock source has been selected.
Remote command:
:CLOCk:INPut:FREQuency?
on page 524
Global Trigger/Clock/Input Settings
Calls the "Global Trigger/Clock/Input Settings" menu. This menu is used among other
things for setting the trigger threshold, the input impedance and the polarity of the clock
and trigger inputs.
The parameters in this menu affect all digital modulations and standards, and are
described in the
Chapter 5.2.3.10, "Global Trigger/Clock/External Input Settings" ,
on page 141.
Remote command:
n.a.
5.8.3 Arbitrary Waveform Generator ARB
The Arbitrary Waveform Generator (ARB) is an I/Q modulation source forming an inte-
gral part of the R&S
SMJ. It can be used to output any externally calculated modulation
signals or internally generated multi carrier signals or waveform files.
The Arbitrary Waveform Generator is incorporated in the Baseband Generator
(R&S
SMJ-B9/B10/B11) option. The Baseband Main Module (R&S SMJ-B13) option is
also required. The three Baseband Generator options feature different ARB memory
sizes (see data sheet). Apart from the memory size, however, the three options offer
the same functionality, either one can be installed.
5.8.3.1 Introduction
This chapter provides background information on the ARB functionality and the impact
of the provided settings.
For description on the multi carrier, multi segment and multi carrier continuous wave
functions, refer to:
●
Chapter 5.8.3.4, "Multi Carrier Waveforms" , on page 411
●
Chapter 5.8.3.3, "Multi Segment Waveforms" , on page 394
●
Chapter 5.8.4, "Multi Carrier Continuous Wave" , on page 424
Waveform Files Sources
The R&S SMJ can replay any waveform file stored on a network drive but also gener-
ate and replay simple waveforms for test purposes.
Baseband Signal - Baseband Block