http://usdigital.com/support/selector-guides/ US Digital designs and manufactures incremental and absolute magnetic and optical encoders, inclinometers and interfaces for the OEM manufacturer. Made in the USA. en-us Copyright 2008 US Digital. support@usdigital.com Thu, 17 May 2012 00:31:59 PDT Thu, 17 May 2012 00:31:59 PDT In house http://blogs.law.harvard.edu/tech/rss/ Selector Guides http://usdigital.com/support/selector-guides/absolute-encoder-selector-guide "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  •  •       Selector GuidesThu, 17 May 2012 00:31:59 PDT http://usdigital.com/support/selector-guides/shaft-incremental-encoder-selector-guide 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     Selector GuidesThu, 17 May 2012 00:31:59 PDT http://usdigital.com/support/selector-guides/e-series-kit-incremental-encoder-selector-guide 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     Selector GuidesThu, 17 May 2012 00:31:59 PDT