RTD Embedded Technologies DM6814HR PC/104 Quadrature Encoder Input DAQ Module

The RTD Embedded Technologies DM6814HR is a PC/104 quadrature encoder input and data acquisition module engineered for industrial applications demanding precise position and velocity measurement. This stackable ISA bus module delivers three independent encoder inputs with integral 16-bit up/down counters, programmable digital I/O, and timer/counter functions in a compact embedded form factor.

Technical Specifications

• Form Factor: PC/104 with stackable ISA Bus interface


• Encoder Inputs: Three quadrature encoder channels, diode protected, each with 16-bit up/down counter


• Digital I/O: Six bit-programmable lines; twelve input-only lines


• Timer/Counters: Three 16-bit timer/counter circuits


• Clock: 8 MHz on-board oscillator


• Pull-up/Pull-down Resistors: Configurable per bit or per port


• Power Supply: Single +5V supply


• Operating Temperature: -40°C to +85°C


• Connectors: Two 50-pin 0.1" DIL headers


• Construction: Milled Aluminum Alloy 6061, Temper-T6 with clear chromate finish

Key Features

• Configurable encoder and digital I/O circuits - use all three as encoder inputs or allocate remaining channels as 16-line programmable I/O blocks


• Diode-protected encoder inputs for incremental rotary and linear position encoders


• AT bus connector for interrupt access and module stacking


• Direct compatibility with Opto-22 I/O modules


• Optional rugged IDAN enclosure for harsh environments

Typical Applications Motion control, position/velocity feedback systems, industrial automation, portable embedded data acquisition, and multi-axis encoder monitoring in military and aerospace platforms.

Compatibility & Integration PC/104 ecosystem integration with DOS drivers and example source code (BASIC and C), plus Windows drivers for 98/NT/2000/XP. Stackable architecture enables integrated encoder and DAQ solutions within confined form factors.