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Resource Library

Shaft and Bore Tolerances - TB1001

US Digital produces hubs and shafts with tolerances based on the ANSI B4.1-1967 (R2009) standards, specifically the LC5 (Locational Clearance) fit class, and recommends that customers conform to the same tolerances for best fit and performance when using US Digital encoders.  Download TB1001 for complete information. Read More »


Renco R35i/US Digital EC35 Compatibility Guide

Part Number Comparison Renco Part Number R35i - xxxx / x - xxx - xx / xx - 5/x - x - x - x US Digital Part Number EC35 - xxxx - x - xxx - x - x - x - x Resolution (CPR) - Resolutions in BOLD are Renco Standard resolutions Description Renco US... Read More »


Avago HEDS/US Digital EM1 Module Compatibility Guide

Please see the EM1 Component Change Notice for more information.   Avago Module 2 Inch1 InchLinearEM1 Part... Read More »


Encoder Feedback Devices: Basics for Motion Control Engineers

Abstract: Selecting the right encoder for a unique application can be a daunting task for the design engineer. This white paper, Encoder Feedback Devices: Basics for Motion Control Engineers, covers commonly asked questions when considering encoders for motion control applications. From basics such as mechanical configuration and absolute versus incremental to the differences in accuracy and... Read More »


Student White Paper: Using the MA3 Absolute Shaft Encoder to Determine Wind Direction. Authors Kevin L. and Justin D., Confederation College, Thunder Bay, Ontario, Canada

Abstract: Two electrical engineering students in the computer control program at Confederation College completed their third year project, a remote weather station, utilizing the MA3 miniature absolute encoder to test wind speed and direction on a wind vane. The MA3 was selected due to its small size, analog output of 0 to 5 Volts, and the availability of a ball bearing option to provide little... Read More »


How the T7 Networked Absolute Inclinometer Drives Down the Cost of Solar Energy in Concentrated Solar Power Systems

Abstract: Concentrated solar power (CSP) and concentrated photovoltaic (CPV) methodologies generate electricity by focusing a large amount of sunlight onto a much smaller area. To maximize efficiency, the sunlight needs to be accurately focused. Being off by even a single degree could result in a significant drop in efficiency, and the biggest impact to the cost of delivering solar energy is... Read More »


Avago Compatibility HEDS-5XXX

HEDS-5500, HEDS-5505, HEDS-5540, HEDS-5545, HEDS-5600, HEDS-5605, HEDS-5640, HEDS-5645. Part Number Comparison Avago / Agilent / HP Part Number HEDS-5 x x x - x x US Digital Part Number E2- x - x - x - x - x - B Mounting Type Description Avago US Digital Standard 5 D Mounting Ears 6 G Through Hole... Read More »


Avago Compatibility HEDM-5X0X

HEDM-5500, HEDM-5505, HEDM-5600, HEDM-5606. Part Number Comparison Avago / Agilent / HP Part Number HEDM-5 x 0 x - x x US Digital Part Number E2- x - x - NE - x - x - B Mounting Type Description Avago US Digital Standard 5 D Mounting Ears 6 G Resolution (CPR) Description Avago US... Read More »


Avago Compatibility HEDL-65XX

HEDL-6500, HEDL-6505, HEDL-6540, HEDL-6545. Part Number Comparison In order for the E6 to be fully compatible with the HEDL-5XXX, CA-C10-F-C10 must also be ordered separately Avago / Agilent / HP Part Number HEDL-65 x x - x x US Digital Part Number E6- x - x - x - L - x - D - B Through Hole Description Avago US Digital No... Read More »


Avago Compatibility HEDL-5XXX

HEDL-5500, HEDL-5505, HEDL-5540, HEDL-5545, HEDL-5600, HEDL-5605, HEDL-5640, HEDL-5645. Part Number Comparison In order for the E5D to be fully compatible with the HEDL-5XXX, CA-C10-F-C10 must also be ordered separately Avago / Agilent / HP Part Number HEDL-5 x x x - x x US Digital Part Number E5- x - x - x - L - x - x - B Mounting Type... Read More »


EM1 / HEDS Reference Guide

The EM1 and HEDS products are transmissive optical encoder modules. These modules are designed to detect rotary or linear position when used together with a codewheel or linear strip. The EM1 and HEDS modules consist of a lensed LED source and a monolithic detector IC enclosed in a small polymer package. These modules use phased array detector technology to provide superior performance and greater... Read More »


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