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A.H. Systems SAS-512-2 Log Periodic Antenna

SAS-512-2

Log Periodic Antenna

Operation Manual



A.H. Systems inc. – May 2014

REV C

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Summary of Contents for SAS-512-2

Page 1: ...A H Systems SAS 512 2 Log Periodic Antenna SAS 512 2 Log Periodic Antenna Operation Manual A H Systems inc May 2014 REV C 1 ...

Page 2: ...4 Optional Equipment 5 OPERATING INSTRUCTIONS Assembly Instructions 6 Mounting Instructions 6 Operating Instructions 8 SPECIFICATIONS Specifications 9 Typical Data 10 Calculations 11 Convertion Factors 12 MAINTENANCE Maintenance Procedures 13 Annual Calibration 13 Warranty 14 A H Systems inc May 2014 REV C 2 ...

Page 3: ...ll cover the whole device under test Constructed of lightweight aluminum the SAS 512 2 Log Periodic Antenna has been manufactured to operate over a very wide bandwidth Weighing in at just 1 5 pounds this Log Periodic Antenna is one of the lightest antennas commercially available The SAS 512 2 Log Periodic Antenna is the standard workhorse of any EMC compliance test house The SAS 512 2 has an excel...

Page 4: ... designed to be used in the process of generating controlling and measuring high levels of electromagnetic Radio Frequency RF energy It is the responsibility of the user to assure that the device is operated in a location which will control the radiated energy such that it will not cause injury and will not violate regulatory levels of electromagnetic interference A H Systems inc May 2014 REV C 4 ...

Page 5: ...e to your specified length Other cable types available upon request Adapters Need an Adapter We stock those as well MOUNTING ACCESSORIES AEH 510 Azimuth and elevation head to assist the test engineer in orientating biconical antenna at the device under test ATU 510 Each tripod leg is independently adjustable in angle and length to facilitate antenna height setting The tripod legs have a rubber tip...

Page 6: ...rization Each tripod leg is independently adjustable in angle and length to facilitate antenna height setting The tripod legs have a rubber tip on one end for indoor or hard surface use and a metal spike on the other end for outdoor soft surface such as dirt use Four extra holes are pre drilled into the booms at the approximate CG point of the antenna for an optional Log Periodic Mount LPM 510 Thi...

Page 7: ...rement is made from the center of the antenna radiating elements and is annotated by a measurement point sticker per ANSI C63 5 IMMUNITY TESTING MEASUREMENT POINT Measurement is made from the tip of the antenna and typically preformed at a 1 meter distance 3 meters per IEC 61000 4 3 A H Systems inc May 2014 REV C 7 ...

Page 8: ...zation when the elements are perpendicular to the ground To minimize impedance mismatch errors it is recommended that high quality in line attenuators be used to reduce reflections Connect the attenuator at the antenna end of the transmitting cable or when receiving connect the attenuator at the measuring instrument or preamplifier input Dress the cables straight back from the antenna connector at...

Page 9: ...5 dBi Maximum Continuous Power 1000 Watts Average Beamwidth 45 Average Beamwidth H Field 100 Impedance nominal 50W Average VSWR 1 62 1 typ 2 6 1 max Maximum Radiated Field 200 V m Connector N Type female Mounting 1 4 20 female PHYSICAL SPECIFICATIONS Weight 2 2 lbs 1 kg Size L x W x H 33 3 x 29 5 x 2 5 84 6cm x 74 9cm x 6 3cm A H Systems inc May 2014 REV C 9 ...

Page 10: ...A H Systems SAS 512 2 Log Periodic Antenna TYPICAL DATA A H Systems inc May 2014 REV C 10 ...

Page 11: ...na factor plus cable loss to receiver reading in dB V to convert to field strength in dB V meter Field Strength dBuV m SA dBuV AF dB m cable loss dB SA Spectrum Analyzer or Receiver voltage reading AF Antenna Correction Factor CL Cable Loss in dB IMMUNITY TESTING For Immunity measurements the generated electric field strength can be calculated by FS Approximate Field Strength in V m P Power in wat...

Page 12: ...to T T 1 25 A m dB A to dBA dBA dB A 120 E FIELD ANTENNAS LOG LINEAR POWER Correction Factor dB V m dB V AF dBm to Watts W 10 dBm 30 10 Field Strength V m 30 watts Gain numeric meters Watts to dBm dBm 10log W 30 Required Power Watts V m meters 2 30 Gain numeric dBW to Watts W 10 dBW 10 LOOP ANTENNAS Watts to dBW dBW 10log W Correction Factors dB A m dB V AF dBW to dBm dBm dBW 30 Assumed E field fo...

Page 13: ...missions testing for electromagnetic compatibility EMC requires the measurement of electric field E field strength which is compared with a limit level The output voltage of an antenna is converted to E field strength via its antenna factor the measurement of which must include the uncertainty components related to that particular antenna taking into consideration the environment in which the ante...

Page 14: ...ing with the delivery of the product by A H Systems The remedy set forth herein shall be the only remedy available to the buyer and in no event shall A H Systems be liable for direct indirect incidental or consequential damages This warranty shall not apply to any part of the product which without fault of A H Systems has been subject to alteration failure caused by a part not supplied by A H Syst...

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