PCIe-6355 80-Channel 1.25 MS/s Multifunction DAQ
The NI PCIe-6355 is a high-channel-count X Series multifunction DAQ device with 80 single-ended or 40 differential analog inputs. It also provides two 2.86 MS/s analog outputs, 24 digital I/O lines and four 32-bit counters.
With a 1.25 MS/s aggregate input rate, it is designed for applications that require both high channel density and faster acquisition than the PCIe-6345.
Key Features of the PCIe-6355
- 80 single-ended or 40 differential inputs
- 16-bit, 1.25 MS/s aggregate acquisition
- Two analog outputs at up to 2.86 MS/s
- 24 digital I/O lines
- Four 32-bit counters
- NI-STC3 timing
- PCI Express interface
- NI-DAQmx support
PCIe-6355 Technical Specifications
| Product Model | PCIe-6355 |
|---|---|
| Part Number | 790687-01 |
| Analog Inputs | 80 single-ended or 40 differential |
| AI Resolution | 16 bits |
| Maximum AI Rate | 1.25 MS/s aggregate |
| Input Ranges | ±0.1 V, ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V and ±10 V |
| AI FIFO | 4,095 samples |
| Analog Outputs | 2 |
| Maximum AO Rate | 2.86 MS/s |
| Digital I/O | 24 bidirectional lines |
| Counters | Four 32-bit counters |
| Input Architecture | Multiplexed |
| Host Interface | PCI Express |
| Driver | NI-DAQmx |
PCIe-6355 Part Number and Accessories
| Item | Part Number | Description |
|---|---|---|
| PCIe-6355 | 790687-01 | 80 AI, 1.25 MS/s multifunction DAQ |
| SHC68-68-EPM | 192061-02 | Shielded multifunction cable |
| SCB-68A | 782536-01 | Shielded terminal block |
| BNC-2110 | 777643-01 | BNC terminal block |
| BNC-2115 | 777807-01 | Extended-I/O BNC block |
High-Speed Multichannel Acquisition
The 80 analog inputs support large fixtures and sensor systems. Because 1.25 MS/s is aggregate, the expected per-channel rate should be calculated using the complete scan list.
Analog Output Generation
Two analog outputs provide stimulus generation for closed-loop, component and device-response tests. NI-STC3 timing can synchronize generation with acquisition.
Digital and Counter Resources
Digital lines support fixture control, while the counters perform encoder, PWM, frequency, period and event measurements.
PCIe-6355 Applications
- High-speed production testing
- Multichannel sensor acquisition
- Stimulus-and-response testing
- Machine monitoring
- Electronic validation
- Laboratory automation
High-Throughput Test Systems
The combination of high channel count and faster conversion helps test systems collect more data within a limited production cycle.
Control and Simulation
Analog outputs and counter resources can create stimulus signals while the analog inputs measure system response.
PCIe-6355 Installation Workflow
Step 1: Confirm System Compatibility
Verify PCI Express, NI-DAQmx and operating-system support.
Step 2: Plan Connectivity
Determine the required cables and terminal blocks for all channel groups.
Step 3: Install the Device
Power down the computer and observe ESD precautions.
Step 4: Wire and Label Channels
Document every cable and terminal position.
Step 5: Test in NI MAX
Verify analog input, output, digital and counter functions.
Step 6: Validate Full-Speed Operation
Test buffer handling and per-channel settling at the intended rate.
PCIe-6355 Troubleshooting
Channels on an extended connector are missing
Verify cable placement and physical-channel mapping.
Fast scans produce inaccurate readings
Reduce source impedance or allow more settling time.
Analog output is lower than expected
Check load impedance, output range and offset.
Buffer overflow occurs
Optimize the read loop or lower the acquisition rate.
Noise appears between channel groups
Improve shielding and separate analog wiring from digital and power conductors.
PCIe-6355 Comparison
| Model | AI | AI Rate | AO |
|---|---|---|---|
| PCIe-6355 | 80 | 1.25 MS/s | 2 |
| PCIe-6345 | 80 | 500 kS/s | 2 |
| PCIe-6357 | 208 | 1.25 MS/s | 2 |
PCIe-6355 Frequently Asked Questions
What is the part number?
790687-01.
How many analog inputs are available?
80 single-ended or 40 differential.
What is the input sampling rate?
Up to 1.25 MS/s aggregate.
How many analog outputs are included?
Two outputs at up to 2.86 MS/s.
Does it use simultaneous sampling?
No. It uses multiplexed sampling.
Recommended Related Products
Request a Quote for the PCIe-6355
Contact us for availability and project pricing for the PCIe-6355 790687-01.
