Optical Scanners: 6200H Moving Magnet Closed Loop Galvanometer Based Optical Scanner

The 6200H series of closed loop galvanometers combines Cambridge Technology's moving magnet actuator technology and our innovative patented advanced optical position detector design. This combination offers the highest positioning speed and precision accuracy in compact, lower cost closed loop galvanometers. The 6200H series scanning systems can be designed and optimized for speed, size, cost and accuracy with typical beam diameters in the 3 to 30 mm ranges.

Model 6215H Moving Magnet Closed Loop Galvanometer Based Optical Scanner

Supports apertures of 3mm, 4mm, and 6mm. Shown here with B connecter and 6mm Y mirror.

Galvanometer Specifications

All Position Detector specifications apply with Cambridge Technology servo driver after a 30 second warm-up. All angles are in mechanical degrees. Consult manual for complete operating instructions.

Mechanical

Rated Angular Excursion:		40°
Rotor Inertia:		0.028 gm cm² , +/-10%
Torque Constant:		3.78x10⁴ dyne cm/amp, +/-10%
Maximum Rotor Temperature:		110° C
Thermal Resistance (Coil to Case):		1° C/Watt, Max

Electrical/Drive Mechanism

Coil Resistance:		2.53 Ohms, +/-10%
Coil Inductance:		94 µH, +/-10%
Back EMF Voltage:		66.0 µV/degree/sec, +/-10%
RMS Current:		4.1 Amperes at Tcase of 50° C, Max
Peak Current:		20 Amperes, Max
Small Angle Step Response Time:		130 µs, with 3mm, Y mirror, settled to 99%

Position Detector

Linearity:		99.9 %, Minimum, over 20 degrees, 99.5% Typical, over 40 degrees
Scale Drift:		50 PPM/° C, Maximum
Zero Drift:		15 µrad/° C, Maximum
Repeatability, Short Term:		8 microradians
Out Signal, Common Mode:		155 µA with AGC current of 30mA, +/-20%
Output Signal, Differential Mode:		12 µA/°, at common mode current of 155 µA, +/-20%

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