PXIe-6357 208-Channel Multifunction I/O Module
Земля NI PXIe-6357 is a high-density X Series multifunction data acquisition module designed for PXI Express automated test and measurement systems. It provides up to 208 single-ended or 104 differential analog input channels in a compact modular format.
The module combines 16-bit analog acquisition with two analog outputs, 24 digital I/O lines and four 32-bit counter/timers. It is well suited to large systems that need to monitor many voltage signals without installing numerous lower-density DAQ devices.
The PXIe-6357 supports analog input sampling up to 1.25 MS/s on one channel and up to 1.0 MS/s aggregate during multichannel scanning. Its inputs are multiplexed rather than simultaneously sampled.
Key Features of the PXIe-6357
- 208 single-ended or 104 differential analog inputs
- 16-bit analog input resolution
- 1.25 MS/s maximum single-channel sample rate
- 1.0 MS/s maximum aggregate multichannel rate
- Two 16-bit analog outputs
- 2.86 MS/s maximum single-channel analog output rate
- 24 5 V TTL-compatible digital I/O lines
- Four 32-bit counter/timers
- Programmable input ranges from ±0.1 V through ±10 V
- Analog and digital triggering
- Independent NI-STC3 timing engines
- PXI Express synchronization
- NI-DAQmx software support
PXIe-6357 Technical Specifications
| Product Model | PXIe-6357 |
|---|---|
| Part Number | 790595-01 |
| Product Type | High-density PXI Express multifunction I/O module |
| Analog Inputs | 208 single-ended or 104 differential |
| ADC Resolution | 16 bits |
| Single-Channel AI Rate | 1,25 МСм/с |
| Multichannel AI Rate | 1.0 MS/s aggregate |
| Input Coupling | DC |
| Input Ranges | ±0.1 V, ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V and ±10 V |
| Analog Outputs | 2 |
| AO Resolution | 16 bits |
| Maximum Single-Channel AO Rate | 2.86 MS/s |
| Цифровой ввод-вывод | 24 lines |
| Counter/Timers | 4 × 32-bit |
| Timing Resolution | 10 ns |
| Шинный интерфейс | PXI Express |
| Software Driver | НИ-DAQmx |
PXIe-6357 Part Number and Connectivity
| Item | Part Number | Описание |
|---|---|---|
| PXIe-6357 | 790595-01 | 208 AI, 2 AO and 24 DIO high-density multifunction module |
| Shielded I/O Cable | Configuration dependent | Connects the high-density module interfaces to terminal accessories |
| Terminal Block | Configuration dependent | Provides screw-terminal or mass-termination field wiring |
| Custom Fixture Interface | Application dependent | Breaks high-density connections out to the DUT or harness |
The PXIe-6357 uses several high-density connector groups to expose its large number of signals. A complete system normally requires multiple cables or a purpose-built mass-termination fixture. Verify every connector assignment before ordering accessories.
208-Channel Analog Input Architecture
The PXIe-6357 provides one of the highest analog input channel counts in the X Series multifunction family. Channels can be organized as as many as 208 single-ended connections or 104 differential pairs.
Single-ended wiring maximizes density and is useful for grounded signals with a shared reference. Differential wiring uses two conductors per measurement and can improve noise rejection in electrically challenging systems.
Multiplexed High-Density Sampling
The module scans the configured input channels through a shared ADC. It does not provide 1.25 MS/s independently on every input. During multichannel acquisition, the total conversion rate is shared across the complete scan list.
For example, a large scan containing hundreds of inputs will have a substantially lower effective sample rate per channel. This architecture is appropriate for temperature, supply, control and status signals that require density more than simultaneous high-speed sampling.
Source-Impedance and Settling Considerations
High source impedance can prevent the ADC input network from settling fully after the multiplexer changes channels. Large voltage steps between adjacent entries in the scan list can make this effect more visible.
Use low-impedance sources, external buffers, slower scan rates or an optimized channel order when maximum accuracy is required. Unused and disconnected inputs should not be interpreted as valid voltage measurements.
Analog Output, Digital I/O and Counters
Two analog outputs generate programmable voltage stimulus or control signals. The 24 digital I/O lines can control fixtures and read digital states, while four counter/timers handle encoder, PWM, frequency and event-count functions.
These additional resources allow the PXIe-6357 to do more than data logging. A single module can coordinate external relays, trigger a DUT, acquire analog responses and measure timing events.
Typical PXIe-6357 Applications
- High-channel-count voltage monitoring
- Battery and energy-storage testing
- Aerospace wiring and subsystem validation
- Automotive electronic-system testing
- Environmental chamber monitoring
- Industrial process data acquisition
- Production test racks
- Power-rail monitoring
- Large sensor arrays
- Research and laboratory automation
PXIe-6357 Troubleshooting
The calculated per-channel rate is too low
The 1.0 MS/s multichannel specification is aggregate. Divide the aggregate scan rate among the enabled channels or reduce the number of channels in each task.
Some connector channels cannot be found
Check the connector number, channel name and pinout in NI MAX. The large channel count is distributed across multiple front-panel connector groups.
Adjacent channels influence one another
Review source impedance, scan order and settling time. Buffer high-impedance sources and avoid placing a low-level signal immediately after a channel with a large voltage difference when possible.
The application loses samples
Increase buffer size, read data in larger blocks and keep logging or user-interface operations outside the critical acquisition loop. Confirm that the controller and storage system can sustain the total data rate.
PXIe-6357 vs PXIe-6353
| Функция | PXIe-6357 | PXIe-6353 |
|---|---|---|
| Maximum Analog Inputs | 208 SE or 104 differential | 32 SE or 16 differential |
| AI Resolution | 16 bits | 16 bits |
| Maximum AI Rate | 1.25 MS/s single channel | 1.25 MS/s single channel |
| Analog Outputs | 2 | 4 |
| Цифровой ввод-вывод | 24 | 48 |
| Best Suited For | Maximum analog input density | Balanced mixed-signal I/O |
Frequently Asked Questions
Does the PXIe-6357 provide 208 differential inputs?
No. It provides up to 208 single-ended inputs or 104 differential inputs.
Are all 208 inputs sampled simultaneously?
No. The PXIe-6357 uses a multiplexed analog input architecture.
Can it generate analog signals?
Yes. It includes two 16-bit hardware-timed analog outputs.
What is the PXIe-6357 part number?
The current listed part number is 790595-01.
Recommended Related Products
- PXIe-6351 High-Speed Multifunction I/O Module
- PXIe-6353 32-Channel Multifunction I/O Module
- PXIe-6383 18-Bit Multifunction I/O Module
- View More NI PXI Modules
Request a Quote for the PXIe-6357
Contact us for availability, lead time and project pricing for the PXIe-6357 208-channel multifunction I/O module. We can also help configure the required cables, terminal hardware, PXI chassis and controller.
