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    NSI-700S-300
 Spherical Near-field Arch Scanner

DESCRIPTION

The NSI model 700S-300 is an ideal system for measuring radiation characteristics of vehicle mounted antennas. The system interfaces with a wide variety of NSI, Agilent, or Rohde & Schwarz RF equipment. The Model 700S-300 includes NSI's NSI 2000 Antenna Measurement Software. This software runs on a 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 information on antenna gain, side lobe structure, beam pointing and cross polarization. The Model 700S-300 can be supplied with a variety of options to enhance system performance.

CAPABILITIES

The 700S-300 consists of a vehicle turntable and an overhead mechanical arch with scanning radius of 30 ft (9.1 m). The rotator can support loads up to 35,000 lb (15,900 kg) and can operate at speeds up to 12°/s.The arch is a steel semi-monocoque structure designed for stiffness, providing a solid base for the angular probe movement at up to 1°/s over a 135 degree span.

FEATURES
  • Radiation Pattern Testing of Vehicle Mounted Antennas
  • Scanning arch provides accurate probe motion over 135 degrees in theta
  • In-ground turntable provides smooth 360 degree phi rotation of vehicle under test
  • Dual-Polarized Broadband Near-field Probe
  • Dynamic on-the-fly Probe Position Correction Subsystem
  • Multi-beam, Multi-Frequency Control of RF Subsystem
  • NSI 2000 Data Acquisition & Processing Software

SPECIFICATIONS
TURNTABLE Diameter of 12 ft (3.7 m)
35,000 lb (15,900 kg) load capability
RF rotary joint & slip ring assembly
Position accuracy of 0.01°
Angular velocity of up to 12°/s (2 rpm)
ARCH Probe scanning radius of 30 ft (9.1 m)
Angular velocity of 1.0 °/s
Angular positioning accuracy of 0.01°
Angular range from 0° to 135°
NSI 2000 SOFTWARE Near-field acquisition & processing capability
Multi-frequency capability
MARS reflection suppression technique
Supports all standard NSI instrument drivers

SIDE VIEW OF NSI-700S-300 SYSTEM

TOP VIEW OF NSI-700S-300 SYSTEM


SIDE VIEW OF ARCH SHOWING TRAVEL

 

 

 

 

DIMENSIONS

    Width of Chamber - 60' (18.3 m)

    Depth of Chamber - 70' (21.3 m)

    Arch Height above ground - 52' 15.8 m)

    Depth of pit below ground - 10' (3.0 m)

     

     


    NSI Vehicle Turntable

    Dual-Polarized Probe to minimize test time.
    Probe Carriage uses Radial and Cross-axis Stages for Dynamic Probe Position Correction.

LINKS
  • No additional links are curently available.
ORDERING INFORMATION

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