Summary of Contents for Clampco Sistemi AT3000
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Page 1: At3000
User manual AT3000 Triaxial Receiving Antenna 3 GHz User manual Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 3: Table Of Contents
6. ATSM01 MANUAL AXIS SELECTOR SPECIFICATIONS ........... 23 7. ATSA03 USB AXIS SELECTOR SPECIFICATIONS ............ 24 AT3000 ANTENNA KIT COMPOSITION AND CODES ............ 25 Page 3 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... - Page 4 According to IEC classification for electrical safety the AT3000 is a Class III product. The AT3000 complies the Electromagnetic Compatibility Directive 2004/108/CE directive. Page 4 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/...
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Page 5: User Instructions
The AT3000 device (Figure 1) contains three passive, independent, orthogonal antennas operating in the 30÷3000 MHz band, designed and built in Calzavara - Clampco Sistemi NIRLab laboratory. If used with the ferrite bead coaxial cable supplied it allows reliable measurement of radio-frequency electric fields which have an environmental impact in the vast majority of practical cases. -
Page 6: Vertical Antenna Support (Item Supportoat3000)
Composite cable ATCFxx Cable Threaded insert 1/4" Side (female) Figure 2: Antenna fixing using the vertical support Page 6 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 7: Axis Selection
LED blinks or does not produce any light although its axis has been manually selected. If you don't use the manual axes selector, it is recommended to remove the battery. Page 7 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 8: Axis Selection With Usb Switch Box (Item Atsa03)
Connect USB cable to USB PC port and then connect its pigtail to the connector of the composite cable (SA side). The axis selected by the software is indicated by the corresponding LED panel. Page 8 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 9: Composite Cable
M H z 1 0000 Figure 6: ATCF02 RF cable typical Attenuation (left) and Return Loss (right) Page 9 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 10: Execution Of Measurement
Some part of commercial spectrum analyzers provide the possibility to store the antenna factor and the attenuation of the cable in use, so to display automatically the electric field in real time. Page 10 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 11: Radiation Protection Measurements
In general, the criteria for selection of the measurement points and the space averaging method have to be defined as well. Page 11 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... - Page 12 From an Italian legislative point of view, the following should be consulted: DPCM (Ministerial Decree) July 2003 which has replaced with minor changes the DM (Ministerial Decree) 381 of September 1998. Page 12 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/...
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Page 13: At3000 Antenna Characteristics
We can Page 13 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... - Page 14 (assessed at the respective frequencies and obtained from the relative certificate) to the antenna factor values shown in the table supplied with the system. Page 14 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/...
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Page 15: Antenna Impedance
Rev 6.0 – September 2014 3.3. Antenna impedance The diagram below represents the typical return loss coefficient of the receiving antenna AT3000 measured at the antenna port with all available axis selection. Figure 8: AT3000 return loss at the antenna port (typical) As one can see it is low enough to get negligible error due to stationary waves in the RF cable, provided that the receiving instrument has an acceptable impedance match. -
Page 16: Maximum Applicable Field Strength
RBW value. 3.5. Maximum applicable field strength AT3000 is a passive device except for its internal three-ways RF switch. The 1 dB compression point of this switch is about 20 dBm. This means that, no matter what is RF cable attenuation, the corresponding 1dB compression point, in terms of a... -
Page 17: At3000 Calibration
120° in relation to the base of the support. Figure 9: Calibration position and procedure for AT3000 antenna Page 17 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 18: At3000 Functional Check And Metrological Validation
(377Ω, i.e., wave impedance of the free space). This condition does not normally occur in the near field region of a transmitting station. Page 18 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 19: At 3000 Packaging
For transportations of the device (for example for return for calibration or service) always use its original case (or wooden box wrapping AT3000 with a bag and fill the box with soft material). This will prevent from damage the polystyrene radome and the antennas. -
Page 20: Maintenance
4. Maintenance 4.1. AT3000 functional check AT3000 does not usually require any maintenance, except for general cleaning with a damp cloth. Do not use solvents on plastic components. To verify that the device is in good conditions it is possible to check the return loss of the three antennas X,Y, Z at the output port with a suitable network analyzer or equivalent device, comparing the results with that registered in the original certificate of manufacturer. - Page 21 If in doubt, please do not hesitate to contact the manufacturer: the cost of cable maintenance is usually negligible. Page 21 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/...
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Page 22: At3000 Antenna Specifications
(alternative option ATSM01) Frequency range from 30 MHz to 3000 MHz Page 22 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 23: Atsm01 Manual Axis Selector Specifications
From –20°C to +60°C. Humidity Max 95% at 50°C (without condensation). Shock Resistance 1 meter drop without damages Page 23 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 24: Atsa03 Usb Axis Selector Specifications
From –20°C to +60°C. Humidity Max 95% at 50°C (without condensation). Shock Resistance 1 meter drop without damages Page 24 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/... -
Page 25: At3000 Antenna Kit Composition And Codes
ATCF05 5 m composite cable Nm-Nm, ferritized (with calibration certificate of attenuation and return loss) Page 25 of 25 Clampco Sistemi is a registered trademark of Calzavara SpA – via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/...
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