|    The MS-4400 XYZ provides a high resolution and highly repeatable means of controlling the X, Y, and Z position of the microscope stage. The MS-4400 XY stage has been specifically designed for larger upright microscopes like the Leica DMR-series, the Nikon Eclipse 80i, the Olympus BX series, and the Zeiss Axioplan, Axioskop 2, and Axio Imager. All axes derive their precise control through the use of closed-loop DC servomotors employing high-resolution rotary encoders for positioning feedback. By using closed-loop control of the stage position, there is no chance that the stage will become lost, as can occur with open-loop micro-stepped stages after a number of moves and direction changes. The MS-4400 XY stage utilizes crossed-roller slides, a high-precision lead screw, and zero-backlash miniature geared DC servomotors for smooth and accurate motion. The Z-axis drive also uses ASI's proven line of closed-loop motor drives, each custom fitted to the microscope. The microprocessor-controlled MS-2000 control unit provides for RS 232 and USB communication with a host computer.    .jpg)
  Features 
                    
                      Closed-loop DC servo control of the X, Y, and Z-axes for precise positioning and highly repeatable focusing Wide dynamic speed range with XY joystick control Utilizes ASI's proven Z-axis drives Z-axis clutch for easy switching between manual and motor-driven focus control Backlit LCD display shows X, Y, and Z coordinates "Zero" and "Home" button for simple stand-alone operations Compact ergonomic tabletop control unit size is 6?D x 9?W x 3?H Microprocessor control with RS-232 serial and USB communications Proven operation with many popular software packages    Specifications for Standard Configuration 
                    
                      | XY axis range of travel | 100 mm x 100 mm |  
                      | XY axis resolution (encoder step) | 22 nm |  
                      | XY axis RMS repeatability | < 700 nm |  
                      | XY axis maximum velocity | 7 mm/sec |  
                      | Z axis resolution (encoder step) | 50 nm |  
                      | Z axis repeatability | ± 100 nm |  
                      | Z axis maximum velocity | 0.6 mm/sec |  
                      |  |  |   MS-4000 Options 
                    
                      X, Y, and Z-axis Linear Encoders for high-accuracy positioning and focus control Stage Inserts to hold a variety of slides, dishes, sealed glass chambers, multiwell microplates, perfusers, heaters, and many other special items Auto-Focus for stages with ASI Z-axis drives (requires NTSC, PAL, or S-Video analog signal) Other lead screw pitches are available    Lead Screw Options  
                    
                      | Lead Screw Pitch Options | Rotary Encoder Resolution | Maximum Speed |  
                      | 25.40 mm  (Ultra-coarse) | 88 nm | 28 mm/sec |  
                      | 12.70 mm  (Super-coarse) | 44 nm | 14 mm/sec |  
                      | 6.35 mm  (Standard) | 22 nm | 7 mm/sec |  
                      | 1.57 mm  (Fine) | 5.5 nm | 1.75 mm/sec |  
                      | 0.635 mm  (Extra-fine) | 2.2 nm | 0.7 mm/sec |      * Standard Lead Screw Accuracy is 0.25 µm per millimeter 
 
 
 Linear Encoder Options  
                    
                      | Axis | Resolution | Scale Accuracy |  
                      | XY | 10 nm | ± 3 µm per length of scale |  
                      | Z (12 mm and 25 mm stroke) | 50 nm | 0.025 µm per mm |  
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