Continious rotation 360°.
Compact design with narrow profile.
Inch or 30 mm aperture.

Rotation range 360° .
0.6arcmin Resolution in full step
2turn/min Max.rotation speed
Weight 0.65kg

Motorised Variable Wheel Attenuator 10MWA168 consists of two filter wheels. Each wheel contains eight filter mounts of Ø20 mm with clear aperture of Ø18 mm. Each mount is inclined by 4 degrees to prevent mutual reflections between filters. We supply the attenuators with a standard, most popular, set of filters. See the table below. Alternatively, optics could be manufactured of individual orders. Or we could supply the attenuators with our filters, which you can fit by yourself. You bring a filter of each wheel into the optical path easily by hand or using automation. The two wheels are driven by single step motor. A computer can operate it via a controller. The Step Motor Controller Cards 8SMCC1/8SMCC3 and computer software 10MWA168S2 come separately. For fastening, the attenuator has clearance slots for M6 and M4 csrews. There are also two M6 holes, and one M4 hole (opposite to one of the M6 holes).
Optical axis can be set anywhere in a contiguous range, except where it is obscured by the base of the filter. The elevation of the optical axis, may vary between 34-97 mm. Material: black anodized aluminium.

Manual drive with a dial knob
Step motor controllers 8SMCC1 or 8SMCC3 are
offered separately
Optional power supplies for higher
voltages/speeds are available
Scale on the dial knob allows reading accuracy
to a step
Limit switches are normally opened, normally
closed are available optionally

In specifications, presented below, the speed and force are tested with our controllers at 12Volts, and with the given motor. The resulting load capacity and speed of your stage will depend on its design. Resolution is specified with the given motor and lead screw pitch. The new generation of stepping motors allow step division modes (micro-stepping), which increase the resoliution of the screw to 4 arcsec and optional dimensions by Motorized Screws 8MS00.

Motorized Actuator
Stepper Motor Drive
Super Compact
High Sensitivity
Limit switches are normally opened, normally
closed are available optionally

Compact Motorized Actuator
Reduced size
Manual drive with the knob
Limit switch: optoelectronic couple

Stepper Motor Drive
High Sensitivity
Compact
Manual drive with knob
Two limit switches

Goniometers rotate an object about an axis in space located outside the body of the unit (usually-above the platform), so the axis is not obscured by the unit itself. Goniometers have small travel range and greater stability, compared to rotation stages. Goniometers have to have different heights of points of rotation, so that, when you stack goniometers one on top of the other, they rotate an object about a common point in space. The mechanism rolls smoothly on ball bearings. The position is read within one revoliution on the scale evgraved on the dial knob sitting on the axle of the motor. Position can be read to each step. Overall position accounting is up-to your computer. Goniometers have two limit switched to signal an "out of limits" error situation. The switches may also be used to roughly establish a zero reference. The stage is driven by stepping motor. A dial knob on its axle allows manual drive. As standrad, we use stepping motors of these parameters: 200 steps, bipolar (4 leads), 36 Om per phase. A customer could order motors of other types. We offer our Step Motor Controller Cards 8SMCC1/3 (1 and 3 axis) to control the motorized stage.

Goniometers rotate an object about an axis in space located outside the body of the unit (usually-above the platform), so the axis is not obscured by the unit itself. Goniometers have small travel range and greater stability, compared to rotation stages. Goniometers have to have different heights of points of rotation, so that, when you stack goniometers one on top of the other, they rotate an object about a common point in space. The mechanism rolls smoothly on ball bearings. The position is read within one revoliution on the scale evgraved on the dial knob sitting on the axle of the motor. Position can be read to each step. Overall position accounting is up-to your computer. Goniometers have two limit switched to signal an "out of limits" error situation. The switches may also be used to roughly establish a zero reference. The stage is driven by stepping motor. A dial knob on its axle allows manual drive. As standrad, we use stepping motors of these parameters: 200 steps, bipolar (4 leads), 36 Om per phase. A customer could order motors of other types. We offer our Step Motor Controller Cards 8SMCC1/3 (1 and 3 axis) to control the motorized stage.

The 8SMCC PCI3 is a triple axis 2-phase bipolar stepper motor motion control module. Controller is designed to work on PCI bus of computer. STANDA manufactures lots of motorized devices such as linear translation stages, rotation stages, attenuators and other equipment. All stepper motors used in STANDA's motorized devices can be controlled by 8SMCC PCI3 controller. Controller can be used to drive motorized positioners of other manufacturers if stepper motor parameters match specifications of 8SMCC PCI3.

STANDA produces motorised devices of different types, e.g. translation, rotation stages, variable wheel attenuators. Step Motors are used to make the different motion. Yet all these motors are controlled via the same Step Motor Controller Card 8SMCC1, or its triple version 8SMCC3. 8SMCC1 provides control over the amount of movement, acceleration, deceleration, speed, direction, sensing 2 limit switches. 8SMCC1 has electrical synchronization signals input and output in real-time. These pulses can start other devices, or the latter can start the controller. Synchronization moments can be set by user to come before, or after a cycle of steps. Cycles can be repeated in one operation 65535 times. Controller moves a motor by full steps or half steps (specified in a command). Custom controller program may allow different levels of output current, voltage, phase. Chip programming and hardware adjustment allow for different modes, speeds, torques, motor types – all to your specifications. 8SMCC1 draws the 12Volts power for the motor from the computer's internal power supply. To sustain the computer itself and the extra load of four 7 Watt motors, between 200-350W may be needed (depends on the power drawn by computer). The card has an integrated socket for external power supply on the back-panel. As you plug the external power supply in, the internal disconnects. We offer 24 Volts external power supply 8STRM01 for this card separately. 8STRM01 is a nice stand-alone box, measuring 100x140x70mm. At 24V the motor speed increases by some 40%.

The 8SMC1-RS232 stepper motor controllers are designed to drive one bipolar stepper motor by local and/or remote means. Local control is implemented by two knobs. Remote control and monitoring are implemented in stepper motor controllers via RS232 interface from PC. Inputs for two limit switches, possibility to connect 10 axis per RS232 host.