Configures and runs National Instruments RF signal generators using NI-RFSG to produce a continuous wave (CW) signal.
You must place at least two NI-RFSG Express (CW) VIs on the block diagram for successful generation.
Select Start generation for the generation mode in the first Express VI to start the
continuous generation. Select Stop generation for the generation mode in the final
Express VI to stop generation and close the NI-RFSG device handle. The following figure shows an example of how to wire the two instances of the Express VI to generate
continuously until a stop button is pressed.
Device—Specifies the NI RF signal generator used. This ring control lists all NI RF signal generators installed on this computer that can be used by this Express VI. If you relaunch the VI and the selected RF signal generator is dimmed, it is no longer available.
Generation—Specifies the generation mode. Choose from the following options:
Start generation—Configures the NI RF signal generator to generate the waveform continuously and starts
the generation. In this mode, the Express VI returns immediately after starting the generation.
To stop the generation, drop another instance of the Express VI on the block diagram, select the same
NI RF signal generator, and configure it to Stop generation.
Stop generation—Stops a continuous generation that was started by another instance of this
Express VI that was configured to Start generation.
Frequency (Hz)—Specifies the frequency of the generated RF signal.
Power level (dBm)—Specifies the power level of the generated RF signal.
Modulation type—Specifies the type of modulation.
Waveform type—Specifies the type of waveform used as a message signal
for analog modulation.
Waveform frequency (Hz)—Specifies the frequency of the waveform used as a message signal for analog modulation.
FM deviation (Hz)—Specifies the FM deviation used in frequency modulation.
Waveform type—Specifies the type of waveform used as a message signal
for digital modulation.
Symbol rate (Hz)—Specifies the symbol rate of the message signal.
PRBS order—Specifies the order of the PRBS signal used as the message signal.
FSK deviation (Hz)—Specifies the deviation used in FSK modulation.
Trigger and Timing
Contains the following options:
Trigger type—Specifies the type of trigger to use for starting waveform generation.
Trigger source—Specifies the trigger source terminal for the digital edge
start trigger.
Edge—Specifies the active edge for the digital edge start trigger.
Reference clock source—Specifies the source of the reference clock signal.
Only certain combinations of Reference clock source and PXI Chassis Clk10 source are valid.
PXI Chassis Clk 10 source—Specifies the signal driven to the 10 MHz
reference clock on the PXI backplane.
Only certain combinations of Reference clock source and PXI Chassis Clk10 source are valid.
Contains error information.
If error in indicates that an error occurred before this Express VI runs, error out contains the
same error information. Otherwise, it describes the error status that this Express VI produces.
