National Instruments 779743-01 PXI Serial Interface Module

Part Number 779743-01 is the identifying part number for the National Instruments PXI-8432/2 Serial Interface Module. The 779743-01 works on the RS-232 serial standard and features 2 ports. The port-to-port isolation and the port-to-host isolation is 60 VDC (CAT I) (continuous) or 2000 Vrms (withstand). Likewise, the module supports baud rates from 2 baud up to its maximum rate of 1000 kbaud. Similarly, the FIFO buffer present in the module is 128 bytes in size. Furthermore, due to the availability of a DMA module, the device can achieve large throughput with minimum CPU utilization.   

The 779743-01 measures 100 × 160 mm in physical dimensions and weighs 125 g. It consists of two DB-9 male connectors for I/O purposes. The power requirement from the PXI channel at +5 VDC is typically 725 mA, which can reach up to a maximum of 1 A. The 779743-01, like the other NI serial interface modules, requires the NI serial driver. The serial driver provides necessary software like the NI Measurement and Automation Explorer (MAX), which is used for configuration and testing. Likewise, to develop custom programs for the module, ADEs (Application Development Environments) like LabVIEW, LabWindows/CVI, and Measurement Studio are used. Furthermore, NI serial devices are also compatible with other programming environments like Visual Studio (C# and VB.NET).

The recommended temperature range for the operation of the 779743-01 is 0 °C to 55 °C at a relative humidity of up to 10% to 90% RH. Likewise, the device is only meant to be used within a maximum altitude of 2000m. On the other hand, it can be stored at -20 to 70 °C at a relative humidity of  5% to 9 RH. Furthermore, since the 779743-01 works with the RS-232 serial protocol, the maximum cable length should be 2500 pF equivalent. Moreover, the data line ESD protection according to the human body model is ±15 kV. The device meets the following safety standards for electrical equipment for measurement, control, and laboratory use: IEC 61010-1, EN-61010-1, UL 61010-1, and CSA 61010-1.