A.H. Systems SAS-550-1B Operation Manual Download Page 1 | Manualshive

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A.H. Systems Model Active Monopole Antennas

Active Monopole

Antenna Series

Operation Manual



A.H. Systems inc. – Nov 2019

REV D

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Summary of Contents for SAS-550-1B

Page 1: ...A H Systems Model Active Monopole Antennas Active Monopole Antenna Series Operation Manual A H Systems inc Nov 2019 REV D 1 ...

Page 2: ... Active Monopole Antennas TABLE OF CONTENTS INTRODUCTION 3 SPECIFICATIONS 5 OPERATING INSTRUCTIONS 6 ANTENNA FORMULAS 8 PREAMPLIFIER ALIGNMENT 9 CALIBRATION 11 MAINTENANCE 12 WARRANTY 13 A H Systems inc Nov 2019 REV D 2 ...

Page 3: ...tennas INTRODUCTION Model Frequency Range Part Number Description SAS 550 1B 9 kHz 60 MHz 2380 Active Monopole Antenna Battery Powered SAS 550 2B 100 Hz 60 MHz 2381 Active Monopole Antenna Battery Powered A H Systems inc Nov 2019 REV D 3 ...

Page 4: ...ll control the radiated energy such that it will not cause injury and will not violate regulatory levels of electromagnetic interference RANGE OF ENVIRONMENTAL CONDITIONS This equipment is designed to be safe under the following environmental conditions Indoor use Altitude up to 2 km Temperature 5 C to 40 C Maximum relative humidity 80 for temperatures up to 31 C Decreasing linearly to 50 at 40 C ...

Page 5: ...er impedance ANTENNA SPECIFICATIONS SAS 550 1B Active Monopole Antenna specifications Frequency Range 9 kHz 60 MHz Antenna Factor 0 dB m Flatness 0 5 dB from 20 kHz 30 MHz 5 dB whole range Sensitivity 5 dB V m 10 kHz 20 dB V m 1 MHz Dynamic Range 96 dB 10 kHz 122 dB 1 MHz Saturation 87 dBuV m Output Connector Type BNC f Input Power 12 Vdc Battery Weight 4 7 lbs 2 1 kg Size W x H x D 18 x 18 x 41 4...

Page 6: ... as the battery has sufficient voltage to power the preamplifier If the LED does not illuminate do not use the preamplifier until the battery has been recharged GENERAL USE INSTRUCTIONS The calibration tables shown provide a listing of the frequency of operation and its antenna factor in dB m The field strength is the receiver voltage in dB V plus the antenna factor refer to the antenna factor cal...

Page 7: ...y is not recommended REPLACING THE BATTERIES Remove the four 6 32 flat head screws from the bottom of the ground plane Disconnect the battery lead from the PC card Re connect the lead from the new battery pack to the PC card Snug the four 6 32 flat head screws Insure that the orientation of the amplifier box is that the input rod connector is facing toward the center of the ground plane ECF 10K Eq...

Page 8: ...eceiver reading in dB V to convert to field intensity in dB V m EXAMPLE Assume the transmitter to be measured is operating at 1 MHz and the receiver reading indicates 44 0 dB V AF dB m 0 1 Receiver reading dB V 44 dB V Cable loss dB 0 7 Field Intensity AF receiver reading cable loss Field Intensity 0 1 44 0 0 7 Field Intensity 44 8 dB V m A H Systems inc Nov 2019 REV D 8 ...

Page 9: ...s shown in Figure 3 and the 50 load connected to the antenna signal output port B Save the trace as trace A Connect the tracking generator cable to the fixture terminated with 50 A and connect the spectrum analyzer cable to the signal output port B per Figure 3 Adjust the resistor pots R6 R7 and R8 Figure 1 to match the following curve Figure 2 R6 adjusts high frequency gain R7 adjusts low frequen...

Page 10: ...nce of the measurement receiver The 10 pF capacitor ensures that the correct source impedance is present during the check For measurement system checks establishing the correct voltage at the input to the 10 pF capacitor can be confusing Since the electrical length of the 104 cm rod is 0 5 meters the conversion factor for the induced voltage at the input to the 10 pF capacitor is 6 dB m If the lim...

Page 11: ...ignal voltage VL in dB V at the signal output port B Leaving the RF output of the signal generator unchanged transfer the 50 termination to the signal output port B and transfer the receiver input cable to the T connector A Measure the drive signal voltage VD in dB V Subtract VL from VD and add 6 dB to obtain the antenna factor in dB of the antenna Records providing evidence that the required fina...

Page 12: ...our active monopole preamplifier by A H Systems experienced technicians is recommended Our staff can recalibrate almost any type or brand of antenna For more information about our calibration services or to place an order for antenna calibration visit our website at www AHSystems com or call 818 998 0223 A H Systems inc Nov 2019 REV D 12 ...

Page 13: ...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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