NSI-600C-3柱面近场量测系统
Model 600C-3 is a complete cylindrical near-fi eld system ideal for measuring broad beam (azimuth) antennaswith apertures less than three feet making it ideal for testing stacked linear arrays. The 600C-3 consists of avertical probe tower with an 3 ‘ (0.9 m) travel, high capacity stepper motor based azimuth positioner, controlcomputer, software and cabling. The probe stage carriage can accommodate probes large as a WR284 includingoptional roll and translation stages. This simple design is easy to assemble and align, accurate, and can bedismantled for transport or storage within one day.
The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phasepatterns from S-band to mmWave Bands. The system includes NSI Antenna Measurement Software.
The system software runs on a Pentium based measurement workstation and provides automatic setup ofscans based on measurement parameters and desired output. Measured data can be processed for far-fi eldor holographic patterns yielding complete characterization of the antenna’s performance. A single data setprovides information on antenna gain, side lobe structure, beam pointing and cross polarization.
The Model 600C-3 can be supplied with a variety of options to enhance system performance.
- High Accuracy Y Linearity <0.003” (0.076 mm)RMS
- 360° x 3’ (0.9 m) Cylindrical Scan Area
- Precision rack and pinion drive
- Low Cost
- S to mmWave Measurements
- Far-field, Near-field and Holographic patterns
- 1,595 lb. (725 kg) load capacity Az positioner
| SPECIFICATIONS | |
| Construction | Aluminum Tower and base; separate azimuth stage. |
|---|---|
| Drive system | Precision Stepper Motors |
| Scan Area | 360° in azimuth; 3’’ (0.9 m) in Y |
| Y-axis Linearity Uncorrected: | <0.003” (0.076 mm) RMS |
| Resolution | 0.0125° in azimuth; 0.002” (0.05 mm) Y |
| Postition Repeatability | 0.03° azmiuth; 0.002” (0.05 mm) YRMS |
| Scan Speed | 20°/sec. (azimuth); 15 in/s (0.38 m/s) Y |
| Azimuth Stage Axial Load: | 1595 lbs (725 kg) max |
| Probe Carriage Capacity | 10 lbs. (4.5 kg) maximum recommendedWR284 |
| 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 | Absorber Kit (5” pyramidal cone) |
| Probe | WR90 Open-ended Waveguide Probe SMA (f) transition & Pyramidal absorber (3”) |
| Probe Absorber | Absorber Kit (5” Pyramidal Cone) |
| Probe Mount | Angle Bracket - allows mounting probein “V” or “H” orientation |
| RF Cables | Qty. 2 - Flexible 15’ (4.5m) with SMA(m-m) coaxial terminations; DC-18 GHz |
| Rotary Joint | Qty 1 DC-18 GHz on Az stage |
| Supported RF Devices | NSI Panther Receiver Subsystem or selection of Agilent, Rohde & Schwarz and Anritsu VNA’s (contact NSI for a complete list) |
| Power | 100-240 VAC switchable, 47-63 Hz, 500 watts |
- Width - 39” (1.0 m)
- Depth - 39” (1.0 m)
- Height - 59” (1.5 m)
- System Weight - 350 lbs (159 kg) approx.
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