National Instruments 778998-01

The National Instruments 778998-01 PXI Analog Output Module, also known as the PXI-6723, is a high-performance output solution designed for precision measurement and control applications. This module features 32 voltage output channels, each providing a resolution of 13 bits. It is optimized for efficiency with a maximum update rate of 204 kS/s when utilizing local FIFO and 45 kS/s when operating with host PC memory. The module is equipped with a double-buffered voltage digital-to-analog converter (DAC) and includes a FIFO buffer memory capacity of 2,047 samples, along with three DMA channels for enhanced data transfer using scatter-gather techniques, interrupts, and programmed I/O.

The PXI-6723 supports a broad range of voltage outputs of ±10 V, with a DC output coupling, and ensures robust performance with a maximum output current drive of ±5 mA and a low output impedance of 0.1 Ω. A built-in short circuit protection feature safeguards the module against potential damage. Power requirements for this module include a typical 300 mA at +3.3 VDC and 1.5 A at +5 VDC, with a voltage supply range of +4.65 to +5.25 VDC at 1 A available at the I/O connector.

Physically, the module has dimensions of 16 cm × 10 cm (6.3 in. × 3.9 in.) and is equipped with two 68-pin VHDCI I/O connectors, enabling seamless integration with various digital devices. The module is designed to operate safely within specified limits, with a maximum working voltage of ±11 V channel-to-earth and ±22 V channel-to-channel. It is important to note that this module does not feature ingress protection, making it unsuitable for use in environments with prevalent dust and moisture.

The PXI-6723 operates effectively in temperatures ranging from 0 degrees Celsius to 50 degrees Celsius and can be stored in ambient conditions of -20 degrees Celsius to 70 degrees Celsius, with a relative humidity tolerance of 5% to 90% RH, noncondensing. It is also rated for a maximum operational altitude of 2000 meters and classified with a pollution degree of 2. The module complies with multiple safety standards including IEC 61010-1, EN 61010-1, UL 61010-1, and CSA C22.2 NO. 61010-1, rendering it ideal for diverse measurement, control, and laboratory applications.