ORBIT FR G-DualScan - Manual (Page 5)

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Probe array
The probe array mechanical characteristics are limited to
• Internal diameter of 12.8 m
• Angle between the probes is 1.304°
Single-probe
Positioner series AL–1760–1P
Bending moment 20,000 ft-lbs
2,765 kg-m
Operating load 20,000 Ibs
9,090 kg
Delivered torque 2,800 ft-Ibs
390 kg-m
Withstand torque 4,200 ft-Ibs
580 kg-m
Drive power ¾ hp
Nominal speed 0.5 rpm
Standard angle transducer format Dual speed synchro
Standard accuracy ± 0.02°
Maximum backlash 0.05°
Mechanical characteristics
Typical ‘on the fly’ measurement
Single-probe set-up
Frequency Number of measured Measurement
frequencies time (in hours)
3 GHz, AUT Diameter is 3 m 10 1.2
6 GHz, AUT Diameter is 5 m 10 3.8
Typical ‘on the fly’ measurement
Multi-probe set-up
Frequency Number of measured Measurement
frequencies time (in hours)
3 GHz, AUT Diameter is 3 m 10 0.1
6 GHz, AUT Diameter is 5 m 10 1.5
Measurement time comparison
10 dBi AUT 20 dBi AUT 30 dBi AUT
PEAK GAIN ACCURACY
0.2 - 0.4 GHz ± 1.5 dB ± 1.46 dB ± 1.46 dB
0.4 - 1 GHz ± 0.9 dB ± 0.86 dB ± 0.86 dB
1 - 18 GHz ± 0.5 dB ± 0.44 dB ± 0.42 dB
PEAK GAIN REPEATABILITY ± 0.3 dB ± 0.3 dB ± 0.3 dB
- 10 dB SIDELOBES ACCURACY
0.4 - 0.8 GHz ± 0.8 dB ± 0.5 dB ± 0.4 dB
0.8 - 1 GHz ± 0.7 dB ± 0.5 dB ± 0.4 dB
1 - 6 GHz ± 0.7 dB ± 0.5 dB ± 0.4 dB
6 - 18 GHz ± 0.7 dB ± 0.5 dB ± 0.4 dB
10 dBi AUT 20 dBi AUT 30 dBi AUT
- 20 dB SIDELOBES ACCURACY
0.4 - 0.8 GHz ± 2.6 dB ± 0.8 dB ± 0.5 dB
0.8 - 1 GHz ± 2.1 dB ± 0.7 dB ± 0.5 dB
1 - 6 GHz ± 2.1 dB ± 0.7 dB ± 0.5 dB
6 - 18 GHz ± 2.1 dB ± 0.7 dB ± 0.5 dB
- 30 dB SIDELOBES ACCURACY
0.4 - 0.8 GHz - ± 2.6 dB ± 0.8 dB
0.8 - 1 GHz - ± 2.1 dB ± 0.7 dB
1 - 6 GHz - ± 2.1 dB ± 0.7 dB
6 - 18 GHz - ± 2.1 dB ± 0.7 dB
*Specifications given according to the following assumptions:
- The standard deviation of the reference data is 0.1dB
- The S11 & the directivity of the reference antenna are the same as those of the AUT
- Absorbers in the anechoic room are AEP-36 from AEMI.
- The given peak gain accuracy values are for 0 dB AUT efficiency
System specifications*
5
I G-DualScan