PCI-6280 18-Bit Multifunction Data Acquisition Device
The PCI-6280 is a high-accuracy M Series multifunction data acquisition device designed for PCI-based automated measurement, laboratory and electronic test systems. It provides 16 single-ended or eight differential analog input channels with 18-bit resolution.
The device supports single-channel sampling rates up to 625 kS/s and multichannel aggregate rates up to 500 kS/s. It also includes 24 digital I/O lines, two 32-bit counters/timers, digital triggering and RTSI synchronization for coordinating multiple PCI measurement devices.
Key Features of the PCI-6280
- 16 single-ended or eight differential analog inputs
- 18-bit analog input resolution
- 625 kS/s maximum single-channel sampling rate
- 500 kS/s maximum multichannel aggregate rate
- Seven software-selectable input ranges
- ±10 V maximum nominal input range
- Selectable 40 kHz low-pass input filter
- 24 programmable digital I/O lines
- Two 32-bit general-purpose counters/timers
- 80 MHz counter timebase
- Digital waveform acquisition and generation
- RTSI synchronization support
- 68-pin VHDCI front-panel connector
- NI-DAQmx software support
PCI-6280 Technical Specifications
| Product Model | PCI-6280 |
|---|---|
| Product Series | High-Accuracy M Series DAQ |
| Bus Interface | 32-bit PCI, 3.3 V or 5 V signaling environment |
| Analog Input Channels | 16 single-ended or 8 differential |
| ADC Resolution | 18 bits |
| Single-Channel Sample Rate | 625 kS/s maximum |
| Multichannel Sample Rate | 500 kS/s maximum aggregate |
| Input Ranges | ±0.1 V, ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V and ±10 V |
| Input Coupling | DC |
| Input Bandwidth | 750 kHz with filter off; 40 kHz with filter on |
| CMRR | 110 dB, DC to 60 Hz |
| Digital I/O | 24 programmable lines |
| Counters/Timers | 2 × 32-bit |
| Counter Timebases | 80 MHz, 20 MHz and 100 kHz |
| Synchronization Bus | RTSI |
| DMA Channels | 6 |
| I/O Connector | 68-pin VHDCI |
| Calibration Interval | 2 years |
| Operating Temperature | 0°C to 55°C |
| Weight | Approximately 151 g |
PCI-6280 Part Number and Accessories
| Item | Part Number | Description |
|---|---|---|
| PCI-6280 | 779108-01 | 18-bit, 16-channel high-accuracy PCI multifunction DAQ device |
| SHC68-68-EPM Cable | Length dependent | Shielded 68-pin cable for M Series DAQ connections |
| SCB-68A | Configuration dependent | Shielded screw-terminal connector block |
| BNC-2120 | Configuration dependent | BNC connectivity accessory for laboratory signal access |
| RTSI Cable | Configuration dependent | Routes timing and triggering between compatible PCI devices |
The PCI-6280 uses one 68-pin VHDCI connector. Confirm cable compatibility because similarly sized 68-pin cables may have different shielding, connector orientation or supported signal assignments.
18-Bit High-Accuracy Analog Input
The 18-bit ADC provides greater measurement resolution than standard 16-bit M Series devices. This is useful when small signal changes must be detected across a relatively wide input range.
The card offers ranges down to ±0.1 V, allowing the programmable gain stage to use more of the ADC range for low-level voltage measurements. Source impedance, noise, grounding and settling time must still be considered when scanning several channels.
Selectable 40 kHz Input Filter
A selectable analog input filter reduces the signal bandwidth from approximately 750 kHz to 40 kHz. It can help reduce high-frequency noise when measuring slowly changing sensor and control signals.
Enabling the filter increases settling requirements during multichannel scanning. The application should allow sufficient convert time after changing channels or input ranges.
Digital I/O and Counters
The 24 digital lines support static control and correlated digital waveform operations. Two 32-bit counters can perform edge counting, pulse measurement, frequency measurement, encoder input and pulse-train generation.
RTSI Multi-Device Synchronization
The RTSI bus can route clocks and triggers between compatible PCI devices inside the same computer. This allows analog acquisition, digital I/O and counter tasks on several cards to start from a common hardware event.
PCI-6280 Applications
- Precision voltage acquisition
- Automated electronic testing
- Scientific laboratory measurements
- Sensor and transducer monitoring
- Production functional testing
- Data logging
- Low-level signal measurements
- Digital control and monitoring
- Encoder and frequency measurements
- Multi-device synchronized acquisition
- Research and development
- Legacy PCI test-system maintenance
Precision Sensor Acquisition
The selectable input ranges and 18-bit ADC make the PCI-6280 suitable for conditioned sensor signals. External signal conditioning is still required for thermocouples, strain gauges, IEPE sensors and other sensors that do not directly provide a compatible voltage.
Automated Test Equipment
Analog inputs can measure DUT voltages while digital lines and counters control fixtures, monitor status signals and generate timing events. NI-DAQmx coordinates these functions within one automated test application.
PCI-6280 Installation Workflow
Step 1: Confirm the Computer Interface
Verify that the computer provides a compatible conventional PCI slot. PCI Express-only systems require a different DAQ model or an appropriate external chassis solution.
Step 2: Install NI-DAQmx
Install a driver version compatible with the operating system and PCI-6280 before developing the measurement application.
Step 3: Install the PCI Card
Shut down and disconnect the computer, insert the PCI-6280 into the slot and secure its mounting bracket.
Step 4: Connect the Cable and Terminal Block
Attach the supported shielded cable and terminal accessory. Verify the PCI-6280 pinout before applying any signals.
Step 5: Configure the Device in NI MAX
Confirm that the board is detected, create channel configurations and run a self-test.
Step 6: Validate the Analog Inputs
Apply a known voltage within the selected range and compare the acquired result with a calibrated reference instrument.
Step 7: Configure Timing and Triggering
Set the sample rate, channel list, terminal configuration, filter state and hardware trigger required by the test.
PCI-6280 Troubleshooting
The computer does not detect the PCI-6280
Reseat the board, try another compatible PCI slot and confirm that the installed NI-DAQmx version supports both the device and operating system.
The acquired voltage is inaccurate
Check differential or single-ended terminal configuration, signal grounding, source impedance and input range. Allow at least the recommended 15-minute warm-up period.
Adjacent channels affect one another
Reduce source impedance, slow the convert clock or insert additional settling time between channels. Ghosting is more likely when scanning high-impedance sources.
The measurement contains excessive noise
Use differential connections and shielded cable, improve grounding and enable the 40 kHz filter when the required signal bandwidth permits it.
Digital waveform tasks do not start
The digital subsystem requires a sample clock from another onboard subsystem or an external source. Verify the clock route and trigger configuration.
PCI-6280 Comparison
| Model | Primary Configuration | Best Suited For |
|---|---|---|
| PCI-6280 | 16 AI, 18 bit, 625 kS/s, 24 DIO, no AO | High-resolution analog acquisition |
| PCI-6281 | 16 AI, 18 bit, analog output and digital I/O | High-accuracy multifunction input and output |
| PCI-6284 | 32 AI, 18 bit, 48 DIO | Higher analog and digital channel density |
| PCI-6224 | 32 AI, 16 bit, 250 kS/s, 48 DIO | Cost-effective high-channel-count acquisition |
Recommended Related Products
- PCI-6281 High-Accuracy Multifunction DAQ
- PCI-6224 Multifunction DAQ Device
- PCI-6233 Isolated Multifunction DAQ
- View More NI PCI and USB DAQ Products
Frequently Asked Questions
What is the PCI-6280?
The PCI-6280 is an 18-bit PCI multifunction data acquisition board with analog inputs, digital I/O and counter/timer functions.
What is its maximum sample rate?
It supports up to 625 kS/s on one channel or 500 kS/s aggregate when scanning multiple channels.
Does the PCI-6280 provide analog outputs?
No. Select the PCI-6281 or another multifunction model when analog output channels are required.
How many digital I/O lines are available?
The device provides 24 programmable digital I/O lines.
What is the PCI-6280 part number?
The standard ordering part number is 779108-01.
Request a Quote for the PCI-6280
Contact us for availability, lead time and pricing for the PCI-6280 18-Bit Multifunction DAQ Device. We can also help identify compatible cables, terminal blocks and replacement PCI or PCI Express DAQ models.
