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National Instruments 782133-01 Differential Digital I/O module

The part number 782133-01 from National Instruments is the identifying part number for the NI-9753 Differential Digital I/O module. This CompactRIO differential digital I/O module is specifically designed for powertrain control applications and features eight individually controlled inputs or outputs with high-resolution timing. These channels utilize RS485/422 compatible differential transceivers, supporting a voltage range of 0 Volts to 5 Volts. When configured as outputs, the channels can be controlled by customized Boolean logic or specialized fuel and spark VIs included with the module. 

This module requires power from two sources, first is the CompactRIO backplane and the second is the external power supply via a DB-37 connector. The backplane provides regulated 5 Volts and ground for digital logic functions, while the external supply, typically from an automotive 12 Volts or 24 Volts battery system, provides a voltage range of 6 Volts to 32 Volts. In addition, it can consume up to 2 Watts from the external supply, with a maximum power limit of 5 Watts. The 5 Volts sensor power output can supply up to 1 Ampere, with the module directing high current paths through the BATT and GND terminals on the front panel.

The 782133-01 is compatible with CompactRIO controllers and chassis, as well as NI PXI systems using R Series expansion chassis and FPGA cards. It is not compatible with CompactDAQ chassis. This module is designed to meet international safety standards, including IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1. It also complies with various EMC standards such as EN 61326-1 and FCC Part 15 and is designed for indoor use, with an operating humidity range of 10% to 90%, non-condensing, and a maximum altitude of 2,000 meters. It has an Ingress protection rating of IP40 and a pollution degree of 2.

The digital output logic levels for the 782133-01 are specified at 8 mA loads, with high levels ranging from 4.0 Volts to 5.0 Volts and low levels from 0.1 Volts to 0.4 Volts. The differential input logic levels are defined with a high state at (a - b) > 200 mV and a low state at (a - b) < -200 mV.