US Digital will be closed Monday, May 27th in observance of Memorial Day.

Terms and conditions apply.

User Guides

QSB Manual Firmware Update Procedure

This document provides step by step instructions on how to manually update a QSB device's firmware. QSB Manual Firmware Update.pdf, 284.98 KB, 02/07/2013   Read More »

T7 Modbus Communication User Guide

This document describes the host serial port communication protocol of the T7-1-MOD2/T7-1-MOD4. Download the T7_Modbus_Communication_User_Guide.pdf, 192k, v1.3, 1/9/12   Read More »

USB4 Driver Upgrade Instructions

Uninstall the old version of the USB4 drivers before installing the latest version. Perform the following steps to make sure all USB4 device entries have been uninstalled before installing the lastest version.  To remove old USB4 drivers from Windows Vista and Windows 7. 1. Go to Control Panel and double click on System. You can also right-click "Computer" on the Start menu (or on... Read More »

QSB Command List

This document describes the communication format for the QSB product.  It also lists and describes the commands available for the QSB device. QSB Commands List.pdf  (582KB)   Read More »

ED3 Tachometer Worksheet

This spreadsheet program helps the user of the ED3 set the correct parameters for the Tachometer mode.  Enter the encoder CPR and desired RPM resolution and see if it will give the desired RPM display results. Tachometer_spreadsheet.xls   (21KB) Read More »

QSB Application Examples

This document shows some examples of the comands necessary to activate some of the basic features available on the QSB product. QSB Applications Examples.pdf (354 KB, Version 1.4)   Read More »

AD4B Communications Protocol

The AD4B adapter provides a simple plug in method for connecting a single ended or differential quadrature encoder directly to an RS-232 serial com port. One end of the AD4 plugs into a serial port, while the other end plugs into a quadrature encoder. A quadrature counter (LFLS7166) inside the AD4 keeps track of encoder position, while a microprocessor provides a serial interface for the user... Read More »

T7 DLL User Guide

This document describes how to install and use the T7 DLL on a PC running Windows using the RS232 port or the US Digital USB-232 USB interface. T7 DLL User Guide.pdf (529KB, 10/01/09)  Read More »

T7 Communication User Guide

This document describes the host serial port communication protocol of the T7-1-232/T7-1-485/CANA-232/CANA-485 adapters.T7 Communication User Guide.pdf (8/11/2011, v1.6, 256 KB) Read More »

USB1 to USB4 Upgrade Guide

This is the USB1 to USB4 Upgrade Guide. USB1 to USB4 Upgrade Guide.pdf (46 KB) Read More »

USB4 User Manual

This is the User Manual version 1.5 for the USB4-S / USB4-D.  USB4 Manual_v1-5.pdf (773 KB)   Read More »

USB1 Manual

This is the user manual for the USB1-S / USB1-D. USB1 Manual.pdf (157 KB)   Read More »

PCI-4E Manual

This is the user manual for the PCI-4E-S / PCI-4E-D. PCI-4E Manual.pdf (358 KB) Read More »

PCI-3E Manual

This is the user manual for the PCI-3E-S / PCI-3E-D. PCI-3E_Manual.pdf, 574k, 9/30/10     Read More »

SEI Serial Encoder Interface Bus

SEI Data Sheet US Digital's SEI bus is a simple, quick and convenient way of networking devices to an RS232 serial port. The AD2-B adapter is available to interface to a standard RS232 port (9-pin DSUB) such as those in PCs. A wall-mount power supply furnishes the power for all devices on the SEI bus. SEI Network Absolute Maximum Ratings Parameter Min. Max. Units Operating... Read More »

SEI Absolute Encoder Communications Protocol

SEI Absolute Encoder Communications Protocol Data Sheet Each encoder on the bus is assigned a unique address between 0 and E. The host computer is the master of the bus, while the encoders are slaves. Encoders cannot initiate communication, rather the host sends commands and the encoders respond. The first byte of a command always includes the address of the encoder to be selected. Address F is... Read More »

X3 DLL User Guide

This document describes how to install and use the X3 DLL on a PC running Windows using the RS232 port or the US Digital USB-232 USB interface. X3 DLL User Guide (3/19/2008, 742.99kb) Read More »

X3 RS232 Serial Communication User Guide

This document describes how to talk to the X3 using the RS232 serial interface. The serial interface allows the user to reconfigure the X3 output angle range, angle offset, damping time, output configuration, etc. The document details all low level serial commands. For PC applications, US Digital provides a DLL and PC software that allows the user to talk to the X3 using Windows function... Read More »

More in Support

Latest in User Guides