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  Az/El Positioner 12,000 lb (5,400 kg) capacity


The NSI-SC-5668 is a high accuracy azimuth over elevation positioner which is ideal for use in indoor and outdoor antenna measurement systems.


The NSI-SC-5668 azimuth over elevation positioner has a 25.6 in (650 mm) diameter azimuth platen that can support loads up to 12,000 lb (5,400 kg) and bending moments of 30,000 ft-lb (40,600 Nm). The elevation axis delivers 15,000 ft-lb (20,300 Nm) of torque and the azimuth axis delivers 1,500 ft-lb (2,030 Nm) of torque. The design incorporates high-accuracy gearing to minimize backlash. Structural and drive components are chosen to increase torsional stiffness to a new level for the industry, and thereby reducing location uncertainties when testing at different elevation angles. It is equipped with slip ring assembly on azimuth stage, encoder position feedback for both azimuth and elevation stages. The positioner is upgradeable to additional axes.

  • High accuracy and bending moment
  • Motors and motor controller electronics included
  • Capacity 12,000 lb (5,400 kg)
  • All drive electronics are integrated into the stage, controlled from an ethernet port
  • Integral 24 contact slip-ring assembly in azimuth stage
  • Encoders for both axes
  • Over travel recovery
  • Upgradeable to additional axes
  • Integral 25.6 GHz RF rotary joint in azimuth stage
  • Optional 40 or 50 GHz rotary joint

Vertical Load 12,000 lb (5,400 kg)
Bending Moment 30,000 ft-lb (40,600 Nm)
Delivered Torque - Elevation 15,000 ft-lb (20,300 Nm)
Delivered Torque - Azimuth 1,500 ft-lb (2,030 Nm)
Withstand Torque - Elevation 20,000 ft-lb (27,100 Nm)
Withstand Torque - Azimuth 2,000 ft-lb (2,700 Nm)
El stage max. speed 5 deg/s
Az stage max. speed 16 deg/s
Position Accuracy - Elevation 0.02 deg
Position Accuracy - Azimuth 0.02 deg
Total Elevation Limit-to-Limit Travel +/- 105 deg
Control/Readout Interfaces LAN, Pulse Trigger Output, Encoder Output
Power Requirements 324 - 528 VAC, 3-Phase, 30 A

NSI-SC-5668 in 3-axis configuration with
NSI-SC-5638 as AUT roll stage


  • Width : 46 in (1.17 m)
  • Depth : 43 in (1.09 m)
  • Height : 48 in (1.22 m)
  • Weight: 3,980 lb (1,805 kg)
  • No additional links are currently available.

Please contact the NSI Sales department to order this product.

Nearfield Systems, Incorporated
19730 Magellan Drive, Torrance, CA 90502, USA, Tel: 310.525.7000, Fax: 310.525.7100
Email: sales@nearfield.com. Visit our website: www.nearfield.com