The NI PXIe-5423 is a 16-bit PXI Express arbitrary waveform generator available with one or two independently programmable output channels. It combines 40 MHz bandwidth, an 800 MS/s DAC update rate and output capability up to ±12 V.
The PXIe-5423 generates user-defined arbitrary waveforms and standard functions, including sine, square, triangle and ramp signals. Fractional resampling, waveform scripting, streaming and PXI hardware synchronization make it suitable for automated electronic validation, semiconductor test, sensor simulation and production systems.
Key Features of the NI PXIe-5423
- One- or two-channel arbitrary waveform generator
- 40 MHz maximum analog bandwidth
- 16-bit DAC resolution
- 800 MS/s internal DAC update rate
- Up to 200 MS/s user-programmable arbitrary waveform rate
- Output capability up to ±12 V into high impedance
- Output capability up to ±6 V into 50 Ω
- Fractional resampling architecture
- User-defined arbitrary waveform generation
- Sine, square, triangle and ramp functions
- Waveform scripting and sequencing
- High-speed waveform streaming
- Frequency list mode
- 128 MB onboard memory per channel
- Integrated reconstruction filtering
- Hardware triggering and PXI synchronization
- Independent generation engines on the two-channel model
PXIe-5423 Technical Specifications
| Product Model | PXIe-5423 |
|---|---|
| Product Type | PXI Express Arbitrary Waveform Generator |
| Part Numbers | 785115-01 and 785116-01 |
| Output Channels | 1 or 2, depending on configuration |
| Output Type | Referenced single-ended |
| Output Connectors | SMA |
| Maximum Bandwidth | 40 MHz |
| DAC Resolution | 16 bits |
| DAC Update Rate | 800 MS/s |
| Maximum User Waveform Rate | 200 MS/s |
| Maximum Output Voltage | ±12 V into high impedance |
| Maximum 50 Ω Output | ±6 V |
| Standard Waveforms | Sine, square, triangle and ramp |
| Arbitrary Waveforms | Supported |
| Fractional Resampling | Supported |
| Waveform Scripting | Supported |
| Waveform Streaming | Supported |
| Sequence Mode | Supported |
| Frequency List Mode | Supported |
| Onboard Memory | 128 MB per channel |
| Reconstruction Filter | Integrated and configurable |
| Spurious-Free Dynamic Range | Up to approximately -92 dB |
| Integrated System Jitter | Approximately 435 fs |
| Digital Upconversion | Not supported |
| User-Programmable FPGA | No |
| Software Driver | NI-FGEN |
| Bus Interface | PXI Express |
| Operating Temperature | 0°C to 55°C |
| Recommended Warm-Up Time | 15 minutes |
| Product Status | Active |
PXIe-5423 Part Numbers and Configurations
| Part Number | Channels | Total Onboard Memory | Memory per Channel | Product Status |
|---|---|---|---|---|
| 785115-01 | 1 | 128 MB | 128 MB | Active |
| 785116-01 | 2 | 256 MB | 128 MB | Active |
Both configurations provide the same bandwidth, DAC performance, output-voltage capability, scripting and streaming functions. Select 785116-01 when two independently programmable output channels are required.
Arbitrary Waveform Generation
The PXIe-5423 generates user-defined waveforms created from mathematical data, recorded signals or imported waveform files. This allows engineers to reproduce sensor outputs, electrical transients, noise, communication signals and other complex patterns.
Waveform data can be loaded into onboard memory or streamed from the PXI controller. The module converts the waveform samples into analog signals using its high-resolution DAC and fractional resampling engine.
800 MS/s DAC Architecture
The internal DAC operates at 800 MS/s for standard and arbitrary waveform generation. User-defined arbitrary waveforms can be uploaded at rates up to 200 MS/s and resampled to the fixed DAC rate.
Operating the DAC at a consistent high update rate helps reduce frequency images and maintain signal quality across different user-selected waveform rates.
Fractional Resampling
Fractional resampling converts the user-defined sample rate into the PXIe-5423 internal 800 MS/s DAC rate. It allows waveform rates and output frequencies that are not restricted to simple integer divisions of the DAC clock.
This architecture simplifies precise frequency generation and helps deliver consistent dynamic performance across a broad range of waveform configurations.
40 MHz Analog Bandwidth
The PXIe-5423 provides 40 MHz of analog bandwidth, positioning it between the 20 MHz PXIe-5413 and the 80 MHz PXIe-5433.
Its bandwidth supports analog and mixed-signal stimulation, sensor simulation, semiconductor testing and general-purpose electronic validation without the additional cost of the higher-bandwidth PXIe-5433.
16-Bit Output Resolution
The 16-bit DAC provides 65,536 possible digital output codes. This resolution enables small voltage steps and accurate reproduction of low-amplitude waveform details.
Select the smallest output range that accommodates the required waveform amplitude and offset. A suitable range improves effective voltage resolution and signal-to-noise performance.
Wide ±12 V Output Range
The PXIe-5423 supports output signals up to ±12 V into a high-impedance load, providing a maximum swing of 24 Vpk-pk. With a 50 Ω termination, the maximum output is approximately ±6 V.
This voltage capability allows the generator to stimulate many sensors, electronic control units, analog circuits and semiconductor devices without an external amplifier.
Standard Function Generation
The module generates sine, square, triangle and ramp signals without requiring the user to calculate individual waveform samples. Standard function settings include frequency, amplitude, offset and phase.
This operating mode provides a convenient way to perform frequency sweeps, circuit stimulation and troubleshooting before creating a custom arbitrary waveform.
Waveform Scripting and Sequencing
Waveform scripting controls the order in which stored waveforms are generated. Scripts can include repetition, loops, trigger conditions and transitions between waveform segments.
Frequently repeated waveform sections can be stored once and referenced multiple times. This makes more efficient use of the module’s onboard memory and reduces unnecessary data transfers.
High-Speed Waveform Streaming
The PXIe-5423 can stream waveform data from the controller through the PXI Express interface. Streaming enables the generation of signals that are longer than the available onboard memory.
Sustained streaming performance depends on the PXI controller, chassis topology, PCI Express bandwidth, buffer configuration and software implementation.
Independent Dual-Channel Generation
The 785116-01 configuration provides two independent waveform-generation engines. Each channel has its own 128 MB memory and can generate a different waveform or sequence.
The channels can operate independently or share hardware timing and trigger resources when synchronized output is required.
Hardware Timing and Synchronization
The PXIe-5423 uses PXI Express timing and triggering resources to synchronize waveform generation with digitizers, oscilloscopes, digital pattern instruments and other signal generators.
Hardware triggering improves timing repeatability and reduces the uncertainty associated with software-controlled waveform starts.
Typical PXIe-5423 Applications
- Automated electronic design validation
- Semiconductor characterization and production test
- Automotive sensor simulation
- Electronic control unit testing
- Aerospace and defense subsystem validation
- Analog circuit stimulation
- Mixed-signal device testing
- Power-electronics control-signal generation
- Communication baseband waveform generation
- Audio and vibration signal generation
- Fault and transient simulation
- Multichannel automated test systems
NI-FGEN Software Support
The PXIe-5423 uses the NI-FGEN instrument driver. Engineers can configure standard functions, arbitrary waveforms, output ranges, filters, triggering, scripts, sequences and streaming sessions.
Supported development options include LabVIEW, InstrumentStudio, TestStand, LabWindows/CVI, C/C++, .NET and supported Python environments. Verify software and operating-system compatibility before integration.
PXI Chassis and System Integration
The PXIe-5423 requires a compatible PXI Express chassis and controller. System selection should consider available slots, cooling, PCI Express bandwidth and synchronization requirements.
The two-channel PXIe-5423 is also available in PXI waveform-generator bundle configurations with a compatible chassis, controller connection and coaxial cables.
Output Termination and Cabling
Connect the SMA outputs using suitable 50 Ω coaxial cables. Correct termination is important for maintaining waveform amplitude and reducing reflections at higher frequencies.
A signal configured as ±12 V for a high-impedance load appears as approximately ±6 V when connected to a 50 Ω load. Configure the expected load impedance correctly in NI-FGEN.
Self-Calibration
Allow the PXIe-5423 to warm up for at least 15 minutes before performing precision measurements. NI recommends self-calibration after initial installation, after changing modules in the chassis and when the device temperature changes significantly.
Self-calibration can be performed through NI Measurement & Automation Explorer or the NI-FGEN programming interface.
PXIe-5423 Troubleshooting
Why is the measured output amplitude half the configured value?
The module may be configured for a high-impedance load while the oscilloscope or DUT is terminated at 50 Ω. Set the correct load impedance or account for the source-load voltage division.
Why does an arbitrary waveform show unwanted frequency images?
Enable the reconstruction filter, increase the user waveform sample rate and include more samples per waveform cycle. Also verify output termination and analog bandwidth.
Why does waveform streaming stop or underflow?
Check PCI Express bandwidth, buffer size, controller performance and competing transfers within the chassis. The controller must continuously supply data at the required rate.
Why are two channels not synchronized?
Configure a shared hardware trigger and compatible reference clock. Starting the channels separately through software can introduce non-deterministic timing differences.
Why is the output waveform clipped?
Verify that the combined waveform amplitude and DC offset remain inside the selected output range. Also confirm the load impedance and requested voltage level.
Why can NI-FGEN not detect the PXIe-5423?
Confirm that the module is installed in a compatible PXI Express slot, the chassis and controller are operating correctly, and a supported NI-FGEN driver is installed.
PXIe-5423 Comparison with the PXIe-54×3 Family
| Model | Bandwidth | DAC Rate | User Waveform Rate | Channels | Memory | Scripting and Streaming |
|---|---|---|---|---|---|---|
| PXIe-5413 | 20 MHz | 800 MS/s | 200 MS/s | 1 or 2 | 128 MB per channel | No |
| PXIe-5423 | 40 MHz | 800 MS/s | 200 MS/s | 1 or 2 | 128 MB per channel | Yes |
| PXIe-5433 | 80 MHz | 800 MS/s | Up to 400 MS/s | 1 or 2 | 512 MB per channel | Yes |
Recommended Related Products
- NI PXIe-5413 Arbitrary Waveform Generator – suitable for applications requiring up to 20 MHz bandwidth without waveform streaming.
- NI PXIe-5433 Arbitrary Waveform Generator – provides 80 MHz bandwidth, higher user waveform rates and 512 MB memory per channel.
- NI PXI-5441 Arbitrary Waveform Generator – provides 16-bit waveform generation and onboard signal processing for legacy PXI systems.
- NI PXIe-5114 Oscilloscope – captures generated signals and DUT responses in synchronized test systems.
- NI PXIe-5163 Oscilloscope – supports high-speed waveform acquisition for wider-bandwidth validation.
- NI PXIe-1083 PXI Express Chassis – offers an integrated Thunderbolt interface for compact waveform-generation systems.
How to Select the Correct PXIe-5423
Choose part number 785115-01 for one output channel and 128 MB of memory. Select 785116-01 when two independently programmable output channels and 256 MB total memory are required.
Compare the PXIe-5423 with the other PXIe-54×3 models according to bandwidth, memory and streaming requirements. It provides a balanced option between the 20 MHz PXIe-5413 and 80 MHz PXIe-5433.
Why Choose the NI PXIe-5423?
The PXIe-5423 combines 40 MHz bandwidth, 16-bit resolution, a wide output range and advanced waveform automation. Its scripting, streaming and independent dual-channel option make it suitable for complex validation and production test applications.
Frequently Asked Questions
What is the bandwidth of the PXIe-5423?
The PXIe-5423 provides a maximum analog bandwidth of 40 MHz.
What is its DAC update rate?
The internal DAC operates at 800 MS/s. User-defined arbitrary waveforms can be uploaded at rates up to 200 MS/s.
How many output channels are available?
Part number 785115-01 provides one channel, while 785116-01 provides two independently programmable channels.
What is the maximum output voltage?
The module supports up to ±12 V into a high-impedance load or approximately ±6 V into 50 Ω.
Does the PXIe-5423 generate arbitrary waveforms?
Yes. It generates user-defined arbitrary waveforms and standard sine, square, triangle and ramp functions.
Does it support scripting and streaming?
Yes. The PXIe-5423 supports waveform scripts, sequences and high-speed streaming through PXI Express.
How much onboard memory does it have?
Each channel has 128 MB. The single-channel model has 128 MB total, while the two-channel model has 256 MB total.
What software controls the PXIe-5423?
The module uses the NI-FGEN driver and is compatible with supported versions of InstrumentStudio, LabVIEW and other programming environments.
Is the PXIe-5423 still an active product?
Yes. NI currently classifies both PXIe-5423 configurations as active products.
Request a Quote for the NI PXIe-5423
Contact us for current availability, lead time and project pricing for the NI PXIe-5423 40 MHz Arbitrary Waveform Generator. Please specify whether you require the one-channel 785115-01 or two-channel 785116-01 configuration.
