.pdf version
 3' x 3' (0.9 m x 0.9 m) Vertical Planar Near-field Measurement System


The 200V-3x3 is an ideal system for measuring medium and high gain antennas (>15 dBi) with small apertures making it suitable for testing feeds and small arrays or reflector antennas. The 200V-3x3 is based on an inverted design and is constructed of modular high strength aluminum. This simple design is easy to assemble and align, accurate, and can be quickly dismantled for relocation or storage.


The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phase patterns from S-band to mmWave bands. The system includes NSI Antenna Measurement Software. The system software runs on an Windows 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 complete characterization of the antenna's gain, side lobes structure, beam pointing and cross polarization. The Model 200V-3x3 can be supplied with a variety of options and can be upgraded to allow for cylindrical or spherical measurements to expand system performance.

  • Low Cost & Portable
  • 3' x 3' (0.9 m x 0.9 m) Scan Area
  • S-band to mmWave Measurements
  • Inverted "T" Frame Design for High Accuracy
  • Far-field, Holographic and Near-field Patterns
  • Cylindrical and Spherical Options Available
  • Optional support stand (shown in picture) available

Construction Inverted "T" Frame (aluminum)
Drive System Precision Stepper Motor
Scan Area 3' x 3' (0.9 m x 0.9 m)
Planarity <0.003" (0.076 mm) RMS
Corrected Planarity (Requires optional Structure Correction Software and Probe Translation Stage) <0.001" (0.025 mm) RMS
Resolution (x,y) 0.002" (0.05 mm)
Position Repeatability 0.002" (0.05 mm) RMS
Scan Speed (X-Y) 15 in/s (0.38 m/s)
Probe Carriage Capacity 10 lb (4.5 kg) maximum recommended, WR284
System Controller NSI controller with parallel I/O, and serial interface.
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; 40' (12 m)
Scanner Absorber X-Y absorber kit (5" pyramidal cone)
Probe Optional See our list of standard Open Ended Waveguide (OEWG) Probes
Probe Mount Angle Bracket - allows mounting probe in
"V" or "H" orientation
RF Cables Qty. 2 - Flexible 15' (4.5 m) with SMA (m-m) coaxial connectors; DC-20 GHz
Supported RF Devices NSI Panther Receiver Subsystem or selection of Keysight, Rohde & Schwarz and Anritsu VNA's (contact NSI for a complete list)
Power 100-240 VAC switchable; 50/60 Hz, 500 watts


  • Width - 52" (1.3 m)
  • Depth - 19" (0.5 m) (excluding probe)
  • Height - 62" (1.6 m)
  • System Weight - 140 lb (63 kg) approx.

NSI-200V-3x3 - 3' x 3' (0.91 m x 0.91m) scanner system including X-Y stepper motor driven scanner with dual rail aluminium base, motor cable set, controller, PC based measurement workstation, motor drive electronics, NSI antenna measurement software, installation tool kit, system documentation and operation manual.


Opt 100 - 220VAC 50 Hz Operation
Opt 101 - European Version
NSI-SC-5620 - Probe Translation Stage, 4" (100 mm) Travel
NSI-SC-5630 - Probe Roll Stage (100 mm) with 26.5 GHz rotary joint
NSI-SW-5301 - Upgrade NSI Standard Edition Software to Professional
NSI-SW-5105 - Motion Tracking Interferometer (MTI) Software

For additional options and information see Scanner Options and Accessories

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