R&S SMJ100A, Operating Manual

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Instrument Function
R&S
®
SMJ100A
200 Operating Manual 1403.7458.32 ─ 14
To query the impedance of the RF outputs, use the command
:OUTPut<hw>:
IMPedance?
on page 555.
RF On
Activates RF signal output.
This function corresponds to the RF ON /OFF key.
See also Chapter 5.5.1.1, "RF Output" , on page 199.
Remote command:
:OUTPut<hw>[:STATe]
on page 557
RF Output State
Activates the RF output signal by selecting the RF checkbox in the "Configure" dialog
of the "RF/A Mod" block.
Remote command:
:OUTPut<hw>[:STATe]
on page 557
5.5.1.2 RF Signal Modes and Characteristics
The CW, Sweep and List modes are available for generating the RF signal.
●
CW
The RF signal is generated with the set frequency and level. This is the default
mode.
●
Sweep
The RF signal is generated as a sweep with the set parameters.
It is not possible to activate frequency, level and LF sweep simultaneously.
●
List Mode
The RF signal is generated on the basis of a list of predefined frequency and level
values. The duration of the individual steps can be predefined.
Instruments connected downstream can be taken into consideration when setting the
frequency and level by entering a frequency and/or level offset.
Automatic level control ("ALC") ensures maximum level accuracy, even with I/Q modu-
lation.
User-specific lists which contain level correction values for any frequency range ("User
Correction") can be created to, for example, compensate the cable attenuation in a test
assembly setup.
The R&S SMJ generates the RF signal in unmodulated or analog form. The signal gen-
erator is equipped therefore with the following sources for analog modulations:
●
an internal LF generator
●
the external modulation input EXT MOD at the rear of the instrument
An external trigger signal for the sweeps and the LIST mode can be provided at the
INST TRIG input.
RF Signal and Analog Modulations - RF Block