Keithley M1142 Voltage Signal Conditioner RS-485 +/-10V 0006 10-Pin Made in USA

Keithley M1142 Voltage Signal Conditioner RS-485 +/-10V 0006 10-Pin Made in USA

The Keithley M1142 is a compact voltage signal conditioner module designed for use in industrial data acquisition and PLC systems. It accepts analog voltage inputs in the +/-10V range and transmits conditioned data over an RS-485 serial interface, making it suitable for noise-immune signal transmission over longer cable runs in industrial environments. The module is configured as code 0006 and connects via a 10-pin edge connector.

Specifications & What's Included

• Brand: Keithley
• Model: M1142
• Signal Type: Voltage
• Voltage Input Range: +/-10V
• Interface: RS-485
• Configuration Code: 0006
• Connector: 10-pin strip
• Pin labels (visible on housing): +IN, -IN, D01/HI, D10/EV, D00/LO, DEFAULT*, (Y)DATA, (G)DATA*, (R)+VS, (B)GND
• CE Certified: Yes
• Country of Manufacture: USA (Made in U.S.A. label)
• Form Factor: Compact module with integrated mounting studs
• Includes: M1142 module only

Applications

The M1142 is part of Keithley's line of signal conditioner modules used in industrial automation, process control, and data acquisition systems. These modules interface between analog field sensors or control signals and RS-485 digital communication buses, allowing PLCs and data acquisition controllers to read voltage signals accurately in electrically noisy industrial settings. RS-485 was — and remains — a widely used differential serial standard in factory automation and process control because of its ability to drive long cable runs and reject common-mode noise. Modules in this family are typically used to connect analog voltage sources (transducers, sensors, or control outputs) to a central data acquisition chassis or PLC backplane. The +/-10V range is a standard industrial signal level used with many process controllers and motion control systems. These conditioners were commonly deployed in manufacturing, laboratory automation, and industrial test systems from the 1990s onward and continue to see use wherever legacy Keithley data acquisition hardware is maintained.