US Digital designs and manufactures incremental and absolute magnetic and optical encoders, inclinometers and interfaces for the OEM manufacturer. Made in the USA. Copyright 2008 US Digital. Thu, 17 May 2012 00:14:35 PDT Thu, 17 May 2012 00:14:35 PDT

Please see the EM1 Component Change Notice for more information.   Avago Module 2 Inch 1 Inch Linear EM1 Part Number HEDS-9000#A00 1000     EM1-2-1000-N HEDS-9000#B00 500     EM1-2-500-N HEDS-9000#J00 1024     EM1-2-1024-N HEDS-9000#T00 2000     EM1-2-2000-N HEDS-9000#U00 2048     EM1-2-2048-N HEDS-9040#B00 Index 1000     EM1-2-1000-I HEDS-9040#J00 Index 1024     EM1-2-1024-I HEDS-9100#A00   500   EM1-1-500-N HEDS-9100#B00   1000   EM1-1-1000-N HEDS-9100#C00   100   EM1-1-100-N HEDS-9100#E00   200   EM1-1-200-N HEDS-9100#F00   256   EM1-1-256-N HEDS-9100#G00   360   EM1-1-360-N HEDS-9100#H00   400   EM1-1-400-N HEDS-9100#I00   512   EM1-1-512-N HEDS-9100#J00   1024   EM1-1-1024-N HEDS-9140#A00   Index 500   EM1-1-500-I HEDS-9140#C00   Index 100   EM1-1-100-I HEDS-9140#E00   Index 200   EM1-1-200-I HEDS-9140#F00   Index 256   EM1-1-256-I HEDS-9140#G00   Index 360   EM1-1-360-I HEDS-9140#H00   Index 400   EM1-1-400-I HEDS-9140#I00   Index 512   EM1-1-512-I HEDS-9140#B00   Index 1000   EM1-1-1000-I HEDS-9040#T00 Index 2000     EM1-2-2000-I HEDS-9200#300     300 EM1-0-300-N HEDS-9200#360     360 EM1-0-360-N HEDS-9100#S00   50   EM1-1-50-N HEDS-9140#S00   Index 50   EM1-1-50-I

Thu, 17 May 2012 00:14:35 PDT

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 resolution, this paper will shed some light on the encoder selection process. Get your free whitepaper download today

Thu, 17 May 2012 00:14:35 PDT

We have modifed the E4, E4P and S4 product lines in order to improve the performance and durability of the encoder. Changes include new molds for the plastic base and cover parts with an over-molded bushing in the S4 base, a new SMT connector (compatible with current mating connector), and a modified PCB profile to accommodate the new connector and plastic part modifications. Download PCN 1014  

Thu, 17 May 2012 00:14:35 PDT

The AD2B, AD4B, AD7, EADAPT, EDAC2, EDIVIDE, EPOT, EQUAD, ESUM, ESWITCH, ETACH2, SEI-USB, USB-232 currently utilizes a printed thermal transfer label. This label will no longer be used and will be replaced by laser marking directly onto the housing of the product. The purpose for this change is to create a more durable solution, and eliminate the possibility of the label being inadvertently removed from the housing. Download PCN 1011  

Thu, 17 May 2012 00:14:35 PDT

The standard DISK-2 transmissive encoder disk is currently produced with a 3-hole bolt pattern cut into the disk for ID sizes greater than or equal to .472” (12mm). This bolt circle feature will no longer be incorporated on any of our standard DISK-2 encoder disks. The purpose of this change is to create uniformity within our standard disk selection. Please contact us if you have interest in a custom disk with features in addition to the standard ID & OD. Download PCN 1013  

Thu, 17 May 2012 00:14:35 PDT

The plastic E5 base and covers have been redesigned for improved moldability and aesthetics. Design changes are primarily alteration of surface drafts, additional or increased corner radii and additional coring out of thick regions. This update was carefully done to preserve the size and shape of the encoder. The new parts are dimensionally equivalent and will fit within the envelope of the previous parts. Only the E-option covers and the G-option bases have features with dimensional changes. Download PCN 1007  

Thu, 17 May 2012 00:14:35 PDT

The primary purpose for this change is to create a more durable and longer lasting solution compared to the previous stick on label solution. The E5 encoder covers will now have the US Digital logo, part number, lot code, and pin-outs laser marked onto the top surface. Download PCN 1009  

Thu, 17 May 2012 00:14:35 PDT

In an effort to enhance the robustness of our E5 encoder, the four threaded inserts pressed into the base are being replaced with similar threaded nuts that will be insert-molded into the encoder base. This change in process will retain the insert with much greater strength. Download PCN 1008  

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AMT102, AMT102E, AMT103, AMT103E. Part Number Comparison CUI Inc. Part Number AMT10 x - xxxx - x xxxx - x US Digital Part Number E5- xxxx - xxx - x - x - H - x - B Outputs/Connector Description CUI Inc. US Digital Single-ended A, B, (Index)/5-pin radial 2 5 Single-ended A, B, (Index)/5-pin axial 3 N/A Differential A+, A-, B+, B- (Index +, Index -)/10-pin radial 2E D Differential A+, A-, B+, B- (Index +, Index -)/10-pin axial 3E N/A Resolution (CPR) CUI Inc. US Digital 2048 2048 (see E6 encoder) 1024 1024 1000 1000 800 N/A 512 512 500 500 400 400 384 384 256 256 250 250 200 200 192 192 125 125 (see E4 or E4P encoders) 100 100 96 96 48 N/A Index Pulse Output Description CUI Inc. US Digital No N NE Yes I IE Shaft Diameter Description CUI Inc. US Digital 2mm 2000 079 3mm 3000 118 1/8" 3175 125 4mm 4000 157 3/16" 4760 188 5mm 5000 197 6mm 6000 236 1/4" 6350 250 8mm 8000 315 Mounting Type Description CUI Inc. US Digital Standard Base* S D Wide Base** W G * US Digital "D" base has 2 mounting holes on a 0.750" dia. B.C., and 3 holes on a 0.823" dia. B.C.. CUI Inc. standard base has the same mounting holes in its standard base, but also has additional mounting holes not found on the US Digital base. ** US Digital G-option base has 2 mounting holes on a 1.812" dia. B.C.. CUI Inc. wide base has two mounting holes on a 1.812" dia. B.C., but also has two mounting holes on a 1.277" dia. B.C. that are not included on US Digital G-option base.

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Part Number Comparison Renco Part Number RM15 - xxxx - xxx - 5 - xxxx - xx - x - xx US Digital Part Number E5- xxxx - xxx - x - x - x - G - B Resolution (CPR) Renco US Digital 16 N/A 24 N/A 32 32 50 50 60 N/A 75 N/A 90 N/A 100 100 127 N/A 128 128 (see  E4  or  E4P  encoders) 150 N/A 200 200 225 N/A  240 N/A 245 N/A 250 250 256 256 300 300 (see  E4  or  E4P  encoders)  312 N/A  360 360  400 400  471 N/A  480 N/A  500 500  512 512  540 540  600 600 (see E7P  encoder)  635 N/A  640 N/A  647 N/A  720  720  800 N/A  900 900  1000 1000  1024  1024   1250 1250  2000 2000 (see  E6  encoder)  Shaft Diameter Description Renco US Digital 3/16" 3/16 188 4mm 4 157 5mm 5 197 6mm 6 236 1/4" 1/4 250* 1/4"+ 1/4+ 250* 5/16" 5/16 313 8mm 8 315 3/8" 3/8 375** 3/8"+ 3/8+ 375** Cable Type Description Renco US Digital Round Shielded CA18 CA-FC10-SH-NC-2 † Flat Ribbon R24 CA-FC5-SH-NC-2 † Outputs/Connector Description Renco US Digital LD (Line Driver) Differential A+, A-, B+, B-, (I+, I-) LD D VC (Voltage Comparator) Single-ended A, B, I VC S VO (Voltage Comparator with Open Collector) Singled-ended A, B, I VO contact US Digital Tech Support Index Pulse Output Description Renco US Digital Ungated 360° ± 20% ∅ N/A Gated with A+B 90° ± 45° 1 IE Mounting and Enclosure Options Description Renco US Digital M2 or 2-56 Mtg. No Hole Cover C2 N/A M2 or 2-56 Mtg. Cover with Hole H2 N/A M2.5 or 4-40 Mtg. No Hole Cover C4 D M2.5 or 4-40 Mtg. Cover with Hole H4 H * Acceptable shaft diameter range: 0.2495" - 0.2450" ** Acceptable shaft diameter range: 0.3745" - 0.375" † These are US Digital cable assemblies that can be ordered as seperate line items. They are round shielded cables with a connector on one end only.

Thu, 17 May 2012 00:14:35 PDT

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  

Thu, 17 May 2012 00:14:35 PDT

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 to no resistance on the shaft. This paper discusses their project and the outcome of using the MA3 as a position sensor. Download the document here .

Thu, 17 May 2012 00:14:35 PDT

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 the desktop if it's shown there) and choose Properties. Note: A faster way for opening up the System applet is to press the Windows logo key on your keyboard and then press Pause/Break at the same time. 2. Click on "Advance System Settings" link, and then click on the "Environment Variables" button. 3. In the System Variables section click on the "New" button. 4. In the New System Variable dialog box, under the Variable Name value enter devmgr_show_nonpresent_devices (just copy the value from here and paste it there) and give it a variable value of 1. Click Ok. 5. In the Environment Variables window notice how the new variable appeared in the System Variables section. Click Ok. 6. In the System Properties window click Ok. 7. Log off and log on. 8. Open Device Manager (Control Panel > System > Hardware > Device Manager). 9. From the View menu click Show Hidden Devices and notice the change. 10. Expand the Encoder Interface tree node. 11. Unplug any attached USB4 devices and then select each Encoder Interface sub-node (one at a time) and right-click and then select Uninstall. 12. Install the latest USB4 software and then attach the USB4 device.

Thu, 17 May 2012 00:14:35 PDT

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)  

Thu, 17 May 2012 00:14:35 PDT

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 efficiency. As with most systems, the accuracy is limited by the accuracy of the sensors used in that system. There are a number of different types of sensors that can be used in these systems. This paper discusses why an absolute inclinometer is the most effective sensor solution and why the US Digital T7 is superior to other inclinometers available today. Get your free whitepaper download today .

Thu, 17 May 2012 00:14:35 PDT

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)

Thu, 17 May 2012 00:14:35 PDT

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)  

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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 to query the counter for the encoder position. The bidirectional data lines carry commands from the host computer and responses from the AD4B . The format is 1 start bit, 8 data bits and 1 stop bit. The baud rate can be changed, but it always starts as 9600 baud after reset or power-up. Large numbers are transmitted with the most significant byte first. AD4 Serial Commands: Ping: Function: Test for the presence of an AD4. Send 1 byte: 'A' (41 hex) Returns 1 byte: '4' (34 hex) Read Position: Function: Latches the counter and returns the current position. Send 1 byte: 01 hex Returns 4 bytes: 4 byte current position, LSB first. The LFLS7166 is a 24-bit counter, the 4th position byte can be ignored. Initialize AD4's counter: Function: Initializes the LFLS7166, sets the quadrature to a specified multiplier, and loads the preset register with a specified value. Initialization data sent to the LFLS7166's registers: 68 hex, B0 hex, C0-3 hex ( see LFLS7166 web page ). Send 6 bytes: 22 hex, quadrature mode (0, 1, 2, 4), 4-byte preset register value Returns 1 byte: Checksum Read the Counter's Output Data Register: Function: Reads a byte directly from the LFLS7166's output latch(OL) ( see LFLS7166 web page ). Send 1 byte: 33 hex Returns 1 byte: Value of LFLS7166's OL, the OL consists of three bytes auto-incremented by each read, LSB first. Write to Counter's Input Data Register: Function: Writes a byte directly to the LFLS7166's preset register(PR), the PR consists of three bytes auto-incremented by each write, LSB first ( see LFLS7166 web page ). Send 2 bytes: 44 hex, 1-byte data Returns nothing. Read the Output Status Register: Function: Reads the LFLS7166's output status register(OSR) ( see LFLS7166 web page ). Send 1 byte: 55 hex Returns 1 byte: Value of LFLS7166's OSR. Write to the Counter Control Register: Function: Writes a byte directly to one of the LFLS7166's control registers. Bits 6 and 7 select which control register to write to ( see LFLS7166 web page ). Send 2 bytes: 66 hex, 1-byte register value Returns nothing. Change Baudrate: Function: The baudrate change will be effective after checksum is sent by the AD4. The baudrate always defaults to 9600 after a reset or power-up. Send 2 bytes: 77 hex, Baudrate Code (See table below) Returns 1 byte: Checksum Baud Rate Byte 0x00 0x01 0x10 0x11 0x12 0x13 0x14 0x15 Baud Rate 115200 57600 38400 19200 9600 4800 2400 1200 Enable Index: Function: Enables the Index. The counter will reset when index=true. Send 1 byte: 88 hex Returns 1 byte: 'E' (45 hex) Disable Index: Function: Disables the Index. Send 1 byte: 99 hex Returns 1 byte: 'D' (44 hex)

Thu, 17 May 2012 00:14:35 PDT

Thu, 17 May 2012 00:14:35 PDT

"Absolute output" - no need for re-zeroing after power cycling. Wide variety of models to suit most applications. Kit or shaft versions. All shaft versions available with ball bearing on shaft. Sleeve bushing option models are available with "no-torque" or with shaft torque to provide the correct "feel" for front panel human interface applications. All models are available from stock with fast shipment.                   Encoder Kit Version Shaft Version Sleeve Bushing Option Sealed Housing Option Bore/Shaft Diameter Range Max. Resolution Analog Output Option PWM Output Option SEI  Bus Output Option  Notes A2    • • • 0.25"  12-bits  •    •   A2K  •       2mm (.079") - 10mm (.394")  12-bits  •    •   HBA2    •     6mm (.236") - 19.05mm (.75")  12-bits  •    • Blind, Hollow Bore  HD25A    •   • 0.375"  12-bits  •    • NEMA Size 25, Ruggedized model with machined aluminum housing MA3    • •   0.125", 6mm, 0.25"  12-bits  •  •     MAE3  •        2mm (.079") - 6.35mm (.25")  12-bits  •  •      

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Wide variety of models to suit most applications. All models available with ball bearing on shaft. Sleeve bushing option models are available with "no-torque" or with shaft torque to provide the correct "feel" for front panel human interface applications. US Digital offers a number of external cable drivers to convert single-ended outputs to differential (for models that do not support differential output). All models are available from stock with fast shipment.                   Encoder CPR (Counts) Range Index Option Differential Output Option Nominal Shaft Diameter Sealed Housing Option High Voltage Supply Option Sleeve Bushing Option Nominal Disk Diameter Mounting Notes H1 32-1250 (128 - 5000) •   0.25" •     1" flange H5 recommended for new designs H15 32-1250 (128 - 5000) • • 0.25"       1" flange Size 15 servo mount H3 64-2500 (256 - 10000) •   0.25" •     2" flange   H5 32-1250 (128 - 5000) • • 0.25"       1" flange   H6 64-2500 (256 - 10000) • • 0.25"       2" flange   HD25 64-2500 (256 - 10000) • • 0.375" • •   2" flange NEMA Size 25, Ruggedized model with machined aluminum housing S1 32-1024 (128 - 4096) •   6mm, 0.25" •    • 1" panel S5 recommended for new designs S2 64-2500 (256 - 10000) •   6mm, 0.25" •   • 2" panel S6 recommended for new designs S4 100-360 (400 - 1440)     0.125", 6mm, 0.25"     • 0.65" panel Miniature size, low-power strobe option S5 32-1250 (128 - 5000) • • 6mm, 0.25"     • 1" panel   S6 64-2500 (256- 10000) • • 6mm, 0.25"     • 2" panel   SP-16 16 (64)     0.25"     • 1" panel    

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Arguably the most popular stepper motor encoder in the world, US Digital's E-series optical incremental encoder gives motor design engineers precise position measurement at low cost. US Digital ships hundreds of thousands of units per year, with reliability in the parts-per-million range.  All models offer multiple mounting options. US Digital offers a number of external cable drivers to convert single-ended outputs to differential (for models that do not support differential output). Push-on hubs provide fast assembly and symmetric weight distribution for high rpm applications. All models are available from stock with fast shipment.           Encoder CPR (Counts) Range Bore Diameter Range Index Option Differential Output Option Nominal Disk Diameter Max. Frequency Hub Type Compatible NEMA Motor Size Replacement for Avago Encoder E2  32-1250 (128-5000) 2mm (.079") - 10mm (.394")   •    1"  300 kHz setscrew  17, 23, 34   HEDS-5500 E3  64-2500 (256-10000) 2mm (.079") - 25.4mm (1.0")    •    2"  300 kHz setscrew  23, 34   HEDS-6500 E4  100-360 (400-1440) 1.5mm (.059") - 4mm (.157")      0.65"  60 kHz setscrew   8   E4P  100-360 (400-1440) 1.5mm (.059") - 6.35mm (.25")      0.65"  60 kHz push-on   8   E5  32-1250 (128-5000) 2mm (.079") - 10mm (.394")    •  •   1"  300 kHz setscrew  17, 23, 34 improved replacement for HEDS-5500 E6  64-2500 (256-10000) 2mm (.079") - 25.4mm (1.0")    •  •  2"  300 kHz setscrew   23, 34 improved replacement for HEDS-6500 E7P  180-720 (720-2880) 3mm (.118") - 10mm (.394")     •  1.24"  60 kHz push-on   17, 23   E8P  180-512 (720-2048) 3mm (.118") - 7mm (.276")     •  0.9"  60 kHz push-on   11    

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HB6M Model in IGS Format HB6M Model in Parasolid Format

Thu, 17 May 2012 00:14:35 PDT

PED Model in IGS Format PED Model in Parasolid Format PES Model in IGS Format PES Model in Parasolid Format

Thu, 17 May 2012 00:14:35 PDT

X3Q Model in IGS Format X3Q Model in Parasolid Format