NSI-600C-18柱面近场量测系统
Model 600C-18 is a complete cylindrical near-fi eld system ideal for measuring broad beam (azimuth) antennas withapertures less than eighteen feet making it ideal for testing stacked linear arrays. The 600C-18 consists of a verticalprobe tower with an 18’ (5.5 m) travel, high capacity stepper motor-based azimuth positioner, control computer,software and cabling. The high capacity probe stage can accommodate probes as large as WR1500 includingoptional roll and Z-stages.
The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phasepatterns from mid-range L-band to mmWave Band. 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-field orholographic patterns yielding complete characterization of the antenna’s performance. A single data set providesinformation on antenna gain, side lobe structure, beam pointing and cross polarization.
The Model 600C-18 can be supplied with a variety of options to enhance system performance.
- High Accuracy Y Linearity <0.004” (0.10 mm)RMS
- 360° x 18’ (5.5 m) Cylindrical Scan Area
- Precision Rack and Pinion Drive
- L-band to mmWave Band measurements
- Far-field, Near-field and Holographic patterns
- 5,800 lb. (2,636 kg) load capacity Az positioner
| SPECIFICATIONS | |
| Construction | Steel tower and base; separate azimuthstage |
|---|---|
| Drive system | Precision Stepper Motors; Rack and pinion |
| Scan Area | 360° in azimuth; 18’ (5.5 m) Y |
| Y-axis Linearity Uncorrected: | <0.004” (0.10 mm) RMS |
| Resolution | 0.0015 azimuth; 0.002” (0.05 mm) (Y)RMS |
| Postition Repeatability | 0.03° azmiuth; 0.002” (0.05 mm) Y RMS |
| Scan Speed | 30°/sec azimuth; 10in/s (.025 m/s) Y |
| Azimuth Stage Axial Load: | 10,000 lbs (4,535 kg) max |
| Probe Carriage Capacity | 125 lbs (56.8 kg) maximum recommended,WR1500 |
| 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 (8” pyramidal cone) |
| Probe | WR90 Open-ended Waveguide Probe SMA (f) transition & Pyramidal absorber (3”) |
| Probe Absorber | Pyramidal Cone Absorber (8”) |
| Probe Mount | Angle Bracket - allows mounting probe in “V” or “H” orientation |
| RF Cables | Qty. 2 - Flexible 30’ (9.1 m) with SMA (mm)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 - 63” (1600.2 m)
- Depth - 73” (1844.0 m)
- Height - 120” (3053.1 m)
- System Weight - 1,500 lbs. (680 kg) approx
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