LDS-3000
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Catalog excerpts

LDS-3000 - 1

Model LDS-3000 Laser Doppler Scale LASER SCALE FOR POSITIONING APPLICATIONS Precision Positioning Systems for IBM PC Compatibles FEATURES • • • • Inherent high accuracy and high resolution. No need fear periodic calibration. Non-contact devices eliminate wear. Orthogonality of positioning system determined by mirrors not X-Y stages when using a flat-mirror target. No mounting stress on scale. No thermal expansion on scale. No need for machined flat surface for mounting scale saving installation costs. Higher loop gain possible for closed loop servo control. Optional hermetic seals for hostile environments. Description The LDS-3000 Series Laser PC Positioning Systems provide high speed, high resolution and high accuracy; positioning for single or multiple axis applications, using an IBM compatible PC as the controller. The system is ideal for applications such as Precision XY Stages, Servo Stages, Servo Track Writers, and Linear Measuring Devices. The LDS3000 is compact, easy to install, and cost effective. A PC compatible plug-in board is provided for direct interface to an IBM compatible PC. The Model IPP32 PC Board is a plug-in board, which occupies one full sized slot on the PC ISA Bus. The board digitizes the output of an Optodyne Laser Doppler Displacement Meter and provides a 32-bit parallel target position in units of 1/256, or 1/128, or about 0.1 microinches (2.5 nanometers). The 32 bit position data may be read over the PC backplane and/or output to the position error connector on the top of the board. This parallel output can also be used to close the positioning loop in a servo control system. An additional board (P-501) is available that does not provide the closed loop capability, but can be used for applications where only the displacement is to be read over the PC backplane. System Components L-109 Laser Head -HeNe Laser Head, ruggedized for direct installation in machine tool and other positioning applications. Contains HeNe Tube, Optics a Photodetector Receiver, and electronics. R-102A Retroreflector - 1/2" diameter retroreflector without post or base. Used to return the laser beam back to the Laser Head receiving aperture on a path parallel to the input beam, regardless of the angle of incidence. Movement of the retroreflector determines displacement measurement.

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LDS-3000 - 2

LD-21RS Cable Set-Connects the Laser Head Systems Configuration ER-400 Extended Range - Extends the range The system configurations below provide of the laser system to 400 inches. information on selection of the proper board for IPB Power Box - Supplies the +I5VDC and your application. range of the laser system to 2,000 inches. driver signal to the L-109 Laser Head, and passes the laser output directly to the IPP32 or P-501 Board. Model LDS-3000-P This version of the system uses the IPP32 Board with a 32-bit parallel bus for additional IPP32 32-Bit Parallel Board - Board plugs into an IBM...

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LDS-3000 - 3

Bit Plug-In Board - Automatic pressure and The Y-axis retroreflector must also be laser heads mounted underneath the X-Y stage. temperature compensation consists of an air mounted on a different part of the stage that pressure sensor, an air temperature sensor, and is allowed to move in the Y -direction and measurement of the two flat-mirrors from a material temperature sensor. This is a board not the X-direction. These constraints inside the stage rather than from outside as in that occupies an ISA bus halfsized slot in your prevent 2-axis measurements from being made on the same part of...

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LDS-3000 - 4

Specifications: L-109 Laser Head: ±0.05 microinches Resolution: Laser: 0.5 mw HeNe Laser Stability: ±0.05 ppm. Slew Rate: 23.3 inches per second. Resolution: 0.1 Microinche (0.0025µm) Pressure: Range: 25-32 in Hg (635-813 mm Hg) Accuracy: 0.05 in Hg (1.3 mm Hg) Cable: System Accuracy: Resolution ±0.5 ppm x travel (typical). Range: 40 inches. 400 inches (optional) 2,000 inches (optional) Dimensions: 2" x 2" x 8.5". Retroreflector: 0.5 inches Operating Environment: Temperature: 60-90 degrees F Altitude: 0 to 10,000 feet. Humidity: 0-95% (Non-Condensing). IHS Home Position Signal Output: TTL...

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