©
National Instruments Corporation
13
NI PXI-5660 Getting Started Guide
Configuring Hardware Programmatically
Two paradigms are available to programmatically configure the NI 5660 RF vector signal analyzer
hardware for data acquisition, as shown in Table 1.
Note
The NI Spectral Measurements Toolkit is used to perform measurements on the acquired data
regardless of programming paradigm.
Programming the RF Vector Signal Analyzer in LabVIEW
To programmatically configure the RF vector signal analyzer hardware for data acquisition in
LabVIEW, use the ni5660 VIs. These VIs control both the NI 5600 RF downconverter module and
the NI 5620 IF digitizer module as a single instrument for frequency-domain and I/Q data acquisitions.
The ni5660 VIs are located on the LabVIEW function palette at
Instrument I/O»Instrument Drivers»
ni5660
.
ni5660 LabVIEW VIs Programming Flow
The ni5660 VIs use two programming flows: a frequency-domain acquisition programming flow and
an I/Q acquisition programming flow. Every application built using the ni5660 VIs must call the
ni5660 Initialize VI and the ni5660 Close VI.
Frequency-Domain Measurements Programming Flow
Use the programming flow shown in Figure 6 to acquire data and perform frequency-domain
measurements using the ni5660 VIs. Use the ni5660 Configure for Spectrum VI and the ni5660 Read
Averaged Power Spectrum VI when Acquiring a Frequency Spectrum.
Table 1.
Programmatic Configuration Paradigms for RF Vector Signal Analyzer Hardware
Programming
Paradigm
Benefits
ADE Support
ni5660 VIs
Ease of use from a higher-level application
programming interface: both RF vector signal analyzer
hardware modules are controlled as a single instrument
Addresses common frequency-domain and
I/Q measurement applications
Refer to the
NI RF
Signal Analyzers
Readme
Spectral Measurements
Toolkit;
NI-SCOPE and
NI-TUNER drivers
Maximum flexibility for unique applications from a
lower-level application programming interface
Provides full access to functionality of the instrument
drivers for the RF downconverter and IF digitizer
modules
Refer to the
NI RF
Signal Analyzers
Readme