PXIe-6383 18-Bit Multifunction I/O Module
The NI PXIe-6383 is a high-resolution PXI Express multifunction data acquisition module designed for accurate automated measurements, mixed-signal testing and control applications.
The module provides 32 single-ended or 16 differential analog inputs with 18-bit resolution. It supports a maximum analog input rate of 625 kS/s on one channel and up to 500 kS/s aggregate during multichannel acquisition.
Four analog outputs, 48 digital I/O lines and four 32-bit counter/timers allow the PXIe-6383 to perform voltage acquisition, stimulus generation, fixture control and event timing from one module.
Key Features of the PXIe-6383
- 32 single-ended or 16 differential analog inputs
- 18-bit ADC resolution
- 625 kS/s maximum single-channel input rate
- 500 kS/s maximum aggregate multichannel rate
- Four analog output channels
- Up to 2.86 MS/s analog output update rate
- 48 digital I/O lines
- Up to 32 bidirectional lines on Port 0
- Four 32-bit general-purpose counter/timers
- 10 ns timing resolution
- Analog, digital and software triggering
- High-throughput, low-latency architecture
- PXI Express bus interface
- NI-DAQmx support
PXIe-6383 Technical Specifications
| Product Model | PXIe-6383 |
|---|---|
| Part Number | 790690-01 |
| Product Type | High-resolution multifunction PXI Express DAQ |
| Analog Input Channels | 32 single-ended or 16 differential |
| Analog Input Resolution | 18 bits |
| Single-Channel AI Rate | 625 kS/s |
| Multichannel AI Rate | 500 kS/s aggregate |
| Minimum AI Rate | No specified minimum |
| Input Coupling | DC |
| Analog Outputs | 4 |
| Maximum AO Rate | 2.86 MS/s |
| Digital I/O | 48 lines |
| Counter/Timers | 4 × 32-bit |
| Timing Resolution | 10 ns |
| Timing Accuracy | 50 ppm of sample rate |
| Supported Trigger Types | Software, external digital and analog |
| Bus Interface | PXI Express |
| Software Driver | NI-DAQmx |
PXIe-6383 Part Number and Accessories
| Item | Part Number | Description |
|---|---|---|
| PXIe-6383 | 790690-01 | 32 AI, 18-bit, 625 kS/s multifunction I/O module |
| Shielded 68-Pin Cable | Configuration dependent | Connects the module to a compatible terminal accessory |
| Shielded Terminal Block | Configuration dependent | Provides screw-terminal access to analog and digital signals |
| Custom Fixture Cable | Application dependent | Provides direct wiring to automated test fixtures |
18-Bit Analog Input Resolution
An 18-bit converter divides the selected input range into more codes than a 16-bit converter. When noise, grounding and source quality are properly controlled, this allows the PXIe-6383 to resolve smaller changes in input voltage.
Resolution should not be interpreted as complete system accuracy. Offset, gain error, noise, source impedance, cabling and environmental conditions must also be included in the measurement uncertainty calculation.
625 kS/s Single-Channel Sampling
The maximum single-channel rate is 625 kS/s. During multichannel acquisition, the aggregate maximum is 500 kS/s because the input channels share a multiplexed ADC.
The PXIe-6383 is therefore optimized for applications that require greater resolution and accuracy rather than the highest available X Series sampling speed.
Four Analog Outputs
Four analog outputs support programmable DC levels, control voltages and hardware-timed waveforms. They can be synchronized with acquisition tasks to create automated stimulus-and-response tests.
Output drive, settling time and aggregate update rate should be checked when several channels generate fast or heavily loaded waveforms.
48 Digital I/O Lines
The module provides as many as 32 bidirectional digital I/O lines on Port 0 plus additional PFI signals. Digital lines can control fixtures, communicate with logic devices and route timing or trigger signals.
Hardware-timed pattern operations are useful when digital states must be aligned with analog acquisition or output generation.
Counter and Trigger Functions
Four 32-bit counter/timers perform frequency, period, pulse-width, encoder, PWM and event-count measurements. The module also includes a frequency-generator resource.
Supported trigger methods include internal software triggers, external digital triggers and analog triggers. This provides flexibility for capturing transient events or synchronizing several test instruments.
Typical PXIe-6383 Applications
- Precision voltage measurements
- Electronic device characterization
- Mixed-signal production testing
- Power and energy-system validation
- Sensor and transducer acquisition
- Automated control-system testing
- Low-latency measurement systems
- Laboratory research
- Encoder and PWM testing
- High-accuracy data logging
PXIe-6383 Troubleshooting
Measurements do not appear more stable than a 16-bit device
Additional ADC resolution does not remove external noise. Check the selected range, shielding, source impedance, ground loops and terminal configuration.
The requested multichannel rate is rejected
Configure the combined scan rate at or below 500 kS/s. The 625 kS/s rate applies only to single-channel operation.
The device is missing from NI MAX
Install an NI-DAQmx release that explicitly supports the PXIe-6383. Older driver packages may not recognize this newer device model.
Counter measurements are unstable
Inspect the external signal for noise, slow edges and incorrect voltage levels. Add suitable signal conditioning or filtering when necessary.
PXIe-6383 vs PXIe-6353
| Feature | PXIe-6383 | PXIe-6353 |
|---|---|---|
| AI Resolution | 18 bits | 16 bits |
| Single-Channel AI Rate | 625 kS/s | 1.25 MS/s |
| Multichannel AI Rate | 500 kS/s aggregate | 1.0 MS/s aggregate |
| Analog Inputs | 32 SE or 16 differential | 32 SE or 16 differential |
| Analog Outputs | 4 | 4 |
| Best Suited For | Higher-resolution acquisition | Higher-speed acquisition |
Frequently Asked Questions
What is the analog input resolution?
The PXIe-6383 provides 18-bit analog input resolution.
How many analog inputs does it have?
It supports 32 single-ended or 16 differential analog inputs.
Does it provide analog outputs?
Yes. The module includes four analog output channels with update rates up to 2.86 MS/s.
What is the PXIe-6383 part number?
The standard listed part number is 790690-01.
Recommended Related Products
- PXIe-6323 Multifunction I/O Module
- PXIe-6351 High-Speed Multifunction I/O Module
- PXIe-6353 32-Channel Multifunction I/O Module
- PXIe-6357 High-Density Multifunction I/O Module
Request a Quote for the PXIe-6383
Contact us for current availability, lead time and pricing for the PXIe-6383 18-bit multifunction I/O module. We can also help select suitable cables, terminal blocks, PXI Express chassis and controllers.
