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MP-285 System, Rack Mount

This motorized micromanipulator with a rack mount controller unit is affordable yet offers advanced features found in manipulators costing thousands more. Custom engineered stepping motors, precision cross-roller bearing slides and proprietary worm gear capstan drives form the basis of the watch-like mechanical system. The controller provides power to the stage motors with a quiet linear power supply to minimize electrical noise radiation in your setup. Pipette holders and headstages are securely mounted to the MP-285 with one of our several unique and rigid mounting systems.

The MP-285 was designed to meet a wide variety of positioning needs for the scientific community, and is suitable for patch clamp experiments, extracellular recording, microinjection, intracellular recording and precision robotic positioning applications. An outstanding feature of this system is the unique definable 4th axis for diagonal advancement of the pipette. You select the angle, then activate the 4th axis. As with the other three axes, you may move with adjustable coarse or ultrafine resolution, select the movement speed, and move continuously or in single step increments. To quickly reposition the pipette, simply select the Home function. Axes positions are continuously shown in relative and absolute scales, and are easily readable on the vacuum fluorescent display.

The extremely low backlash of the MP-285 removes traditional drawbacks of "open loop" technology and eliminates drift. This allows submicron resolution down to 0.2 microns in the coarse range and down to 40 nanometers in the fine range. With over 1 inch of motorized travel on all three axes, and a user designated 4th axis, the MP-285 allows tremendous range of motion while maximizing resolution.

Operated with a rack mounted controller unit, this manipulator fits in seamlessly with other components while the compact design and assignable axes of the MP-285 allows you to easily integrate it into your setup at any orientation. To add to its practicality, your choice of one of two manual controls, joystick or rotary optical encoder (ROE), assures a comfortable experimentation environment, customized to the scientist. For users who require repeatable motion sequences, the MP-285 features easily programmed robotic control from the keypad, or via a remote computer. The system can store up to 500 position instructions, including pauses, and will execute the instruction set once, continuously, or in reverse.

1) Rotary Optical Encoder (ROE). Turning one of three 2-inch knobs produces a movement along one axis proportional to the amount and speed of the turn. Buttons allow the activation of "4th axis", change of movement resolution, "home" return function, and toggle between continuous pulse movements.
2) Joystick. Our joystick is a modified three-axis game controller. The degree of handle deflection determines the velocity of movement of each axis. In pulse mode, a button commands the manipulator to take a single step in the axis selected by joystick deflection.


*Highly stable for experiments intolerant of pipette drift.

*Submicron resolution and integrated coarse positioning.

*1 inch of motorized travel on all three axes.

*4th axis with user-selected angle for axial drive.

*Adjustable speed and resolution allows optimization for your experimental setup.

*Programmable robotics for complex motion sequences.

*Continuous display (in microns) of axes positions.

*Switch between continuous or single step movement.

*Absolute and relative origins.

*Convenient Home function allows pipettes to be quickly repositioned.

*Assignable axes permit any orientation of the manipulator.

*Easy to read vacuum fluorescent display.

*Remote computer control via serial interface.

*Compact design easily adaptable to your setup.

*Universal mounting system for headstage or pipette holder.

*Optional mounting adapters.


Travel 1 inch on all three axes
Resolution Low: 0.2µm/step, High: 0.04µm/step
Maximum Speed 2.9mm/sec
Long Term Stability <10nm/hour at 24°C.
Drive Mechanism Precision worm gear capstan drive
Serial Interface RS-232, 9600 baud (1 start bit, 8 data bits, 1 stop bit)
Dimensions Mechanical: 4.5in x 6in x 6.25in; 11cm x 15cm x 16cm,Controller: 4in x 16in x 12.25in;10cm x 40.5cm x 31cm
Weight Manipulator: 3.85lb/1.7kg, Controller: 10lb 11oz/4.5kg
Electrical 115/230 Volts; 50/60 Hertz power line

When ordering the MP-285, the following items must be specified. Please list as separate items with no cost.
Choice of one input device:
Rotary Optical Encoder 285ROE
Joystick 285JOY

The handedness of the manipulator:
Right handed setup RIGHT
Left handed setup LEFT

MP-285/R includes manipulator, rack mount controller unit, cables, rod holder, 4in dovetail headstage adapter, mounting adapter plate, choice of input device, power cord, and manual.

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