NI PCI-6723 – Precision Analog Output PCI Board for Waveform Generation and Voltage Sourcing

The NI PCI-6723 is a National Instruments PCI analog output board designed for reliable, hardware‑timed voltage generation in test stands, benches, and embedded PC controllers. From my experience, teams use it for sensor simulation, actuator control, power supply programming, and driving amplifiers with clean, deterministic waveforms. You might notice that, compared with purely “static” AO cards, the 6723 is built for continuous, clocked updates—ideal when you need stable, repeatable output profiles without babysitting the software loop.

Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week for in-stock; no more than one month at the latest
• Payment: 50% advance payment; full payment for delivery
• Express delivery methods: FedEx, UPS, DHL

Key Features

• Hardware‑timed analog outputs – Generate deterministic, clocked voltage waveforms for control and simulation tasks.
• Programmable voltage ranges – Typically supports common ranges such as ±10 V or 0–10 V for easy integration with drives, supplies, and DAQ signal chains.
• Onboard buffering – Smooth streaming from the host via PCI bus DMA; helps reduce CPU load in long test runs.
• Triggering and timing I/O – PFI/trigger lines (TTL) allow start triggers and sample clocks to synchronize with other instruments.
• NI‑DAQmx driver support – Seamless configuration from LabVIEW, LabWindows/CVI, or C/C++; easier scaling across systems.
• Industrial PC friendly – Full‑height PCI card that typically fits standard desktop or rackmount controllers.

Technical Specifications

Related and Supporting Products

• NI PCI-6722 – Similar family model; typically fewer channels or different update characteristics depending on configuration.
• NI PCI-6733 – Higher‑resolution, faster AO (commonly 16‑bit with higher update rates) when tighter accuracy or speed is needed.
• NI PCIe‑6738 – PCIe‑based successor for newer PCs; improved throughput and long‑term platform support.
• Cables: SH68‑68‑EP or SHC68‑68‑EPM – Shielded 68‑pin cables for low‑noise connections (choose based on connector type).
• Terminal blocks: SCB‑68A, CB‑68LP, BNC‑2110 – Field connection accessories with screw‑terminals or BNC, depending on your wiring style.

One thing I appreciate is how easy it is to migrate LabVIEW code across these models—most projects only need a channel map update. A test engineering lead told us they swapped a legacy static AO card for the PCI‑6723 to get hardware‑timed ramps for valve characterization, and didn’t have to rework their timing architecture.

Installation & Maintenance

• Cabinet/PC standards – Use a clean, ventilated desktop or 19″ rackmount industrial PC with a free full‑height PCI slot. Keep ambient within 0–50 °C.
• Grounding & shielding – Use shielded 68‑pin cables and tie shields to a single ground point to reduce noise. Avoid ground loops in mixed‑signal setups.
• Wiring – For best accuracy, keep cable runs short (typically ≤2 m) and use proper terminal blocks (SCB‑68A/CB‑68LP). Verify the connector standard (VHDCI vs SCSI) before ordering cables.
• Software & drivers – Install NI‑DAQmx compatible with your OS. From my experience, matching driver versions across stations prevents subtle timing differences.
• Calibration – Perform a self‑calibration in NI MAX after installation, and schedule periodic calibration (annually in many cases) to maintain output accuracy.
• Routine care – Keep the PC interior dust‑free, ensure good airflow around adjacent PCI cards, and update firmware/drivers during planned maintenance windows.
• Safety – Do not exceed rated output ranges. De‑energize equipment before re‑wiring. Observe ESD precautions when handling the board.

Quality & Certifications

• CE and RoHS compliant; manufacturer operates under ISO 9001 quality systems.
• Meets typical EMC requirements for use in industrial environments (e.g., FCC Part 15 Class A in many regions).
• Manufacturer’s standard limited warranty typically 1 year; our provided warranty period is 365 days as stated above.