Large Cylindrical Near-Field Scanner Systems

SPECIFICATIONS

Construction:	Steel tower and base; separate azimuth stage
Drive System	Precision Stepper Motor; Rack and pinion
Scan Area	360° in azimuth; 5.5 m (18’) to 16.0 m (52') Y Cylindrical Scan Area
Y-axis Linearity Uncorrected	0.10 mm (<0.004”) RMS
Resolution	Y: 0.0015 azimuth; 0.05 mm (0.002”) RMS
Position Repeatability	Y: 0.03° azimuth; 0.05 mm (0.002") RMS
Scan Speed	Y: 30°/s azimuth; 0.2 m/s (8 in./s) to 0.25 m/s (10 in./s)
Azimuth Stage Axial Load	4,535 kg (10,000 lb) max
Probe Carriage Capacity	56.8 kg (125 lb) to 80 kg (175 lb) maximum recommended, WR1500
System Controller	NSI-MI controller with serial and parallel I/O interfaces
Measurement Workstation	Measurement workstation computer with large LCD monitor
Stepper Motor Power Amplifier	EIA 19" rack mount. (7" high x 14" deep)
Motor Cables	Quick-connect; 12 m (40')
Scanner Absorber	Absorber Kit (12" pyramidal cone)
Probe	Optional
Probe Absorber	Pyramidal Cone Absorber (8")
Probe Mount	Angle Bracket - allows mounting probe in “V” or “H” orientation
RF Cables	Qty. 2 - Flexible 9.1 m (30’) with SMA (m-m) coaxial terminations; DC-18 GHz
Rotary Joint	Qty 1 DC-18 GHz on Az stage
Supported RF Devices	NSI-MI Receiver Subsystem or selection of Keysight, Rohde & Schwarz and Anritsu VNA's (contact NSI-MI for a complete list)
Power	100-120/200-240 V AC, 50/60 Hz, 500 watts

DIMENSIONS

Width:	1.8 m (69") to 3 m (120")
Depth	2.9 m (114") to 5.7 m (224")
Height	6.9 m (270") to 17.8 m (700")
System Weight	1,905 kg (4,200 lb) to 5,000 kg (11,000 lb) approx.

Applications

• General Antenna Testing
• Radome Testing
• Satellite Antenna Testing
• Wireless

Capabilities

The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phase patterns from L-band to mmWave Bands. The system includes Antenna Measurement Software.

The system software runs on an Intel based measurement workstation and provides automatic setup of scans based on measurement parameters and desired output. Measured data can be processed for far-field or holographic patterns yielding complete characterization of the antenna’s performance. A single data set provides information on antenna gain, side lobe structure, beam pointing and cross polarization.

The systems can be supplied with a variety of options to enhance system performance. FEATURES

Standard Options

• Azimuth and Y stepper motor driven scanner
• 12 (40') motor cable set
• Controller PC based measurement workstation
• Motor drive electronics
• Scanner absorber kit
• Antenna measurement software
• X-band probe kit with probe absorber and mounting bracket
• RF cables
• Installation tool kit
• System documentation and operation manual

Available Add-Ons

• Opt 100 220VAC 50 Hz Operation
• Opt 101 European Version - CE Mark
• Opt 102 Delete X-band Probe
• Opt 103 Additional Operation and Maintenance Manual
• Spherical Upgrade
• Probe Roll Stage
• Probe Z-Stage, 0.1 m (4”) translation
• On-Site Installation and Training