NI PCI-6220 – 16‑bit PCI M Series DAQ for precise, scalable analog input

The NI PCI-6220 is a PCI-based M Series data acquisition card focused on high‑accuracy analog input. It’s a strong fit when you need dependable measurements without the extra cost of onboard analog output. From my experience, it lands well in production test benches, lab data logging, and multi-sensor verification where you want clean 16‑bit readings, flexible voltage ranges, and tight timing control via NI‑DAQmx. You might notice that it still gives you plenty of digital I/O and counter timing, so channel expansion and triggering are straightforward.

Order Placement Process and Guarantees

Key Features

• 16‑bit precision analog input – Typically clean, low-noise readings for sensors, transducers, and general voltage signals.
• Up to 250 kS/s sampling – Suitable for multi-channel scanning and mid‑speed logging without overloading the PCI bus.
• Flexible input ranges (up to ±10 V) – Selectable gain helps match different signal levels and improve resolution where needed.
• Multiplexed AI channels – Efficiently scan multiple inputs; typically configured as 16 SE or 8 DIFF.
• 24 lines of 5 V TTL digital I/O – Handy for handshaking, limit switches, or simple device control alongside your analog reads.
• 2 × 32‑bit counters/timers – Edge counting, frequency/period, or pulse generation for precise timing tasks.
• NI‑DAQmx software support – Streamlined configuration and APIs for LabVIEW, LabWindows/CVI, C/C++, .NET, and in many cases Python via NI‑DAQmx.
• Standard PCI interface – Installs in a desktop PC; no external power supply required.

Technical Specifications

Related or Supporting Products

• NI PCI‑6221 – Similar to PCI‑6220 but adds analog output channels (good when you need stimulus + measurement).
• NI PCI‑6225 – More analog input channels with matrix/terminal options for larger systems.
• NI PCI‑6251 – Higher sampling performance within M Series (typically up to 1.25 MS/s AI).
• NI PCIe‑6320 – Newer X Series on PCIe with improved timing engines; a common modern alternative.
• Accessories: SCB‑68A, CB‑68LP, BNC‑2110 terminal blocks; shielded cables such as SH68‑68‑EP/‑EPM for cleaner signals.

Installation & Maintenance

• PC & cabinet: Install in a clean, ventilated desktop PC with a standard PCI slot. Keep adequate airflow around adjacent cards.
• Wiring practice: For noisy environments, use shielded, twisted‑pair wiring and differential inputs where possible. Secure cables to avoid strain on the 68‑pin connector.
• Grounding: Reference grounds carefully to reduce loops; connect shields at a single point in most cases.
• Software: Install the latest NI‑DAQmx. Run a Self‑Test in NI MAX before wiring signals. Keep firmware/driver updates current.
• Routine care: Dust the PCI slot area periodically; check terminal screws and headers quarterly. Calibration is typically every 1–2 years depending on audit requirements.
• Safety: Power down the PC before connecting or moving I/O cabling. Observe ESD precautions when handling the board.

Quality & Certifications

• CE compliant; RoHS compliant
• Designed for FCC Class A environments
• Manufacturer’s limited warranty is typically 1 year; our supply warranty is 365 days as stated above