Power Sensor Calibration System Automated calibration system thir

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Power Sensor Calibration System Automated calibration system thir

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Power Sensor Calibration System
Automated calibration system third party power sensors
Based Aeroflex factory calibration system Modular system covering frequencies Results traceable national standards Measures Factor, VSWR Linearity Factor
Calibration Factor (Cal Factor) Factor gives indication variation sensitivity device with frequency. used provide correction factor compensate errors power dissipated within sensor. This dissipation could caused example, layout within detector, errors reflections caused mismatch source device input. Both these sources error frequency dependent. Factor expressed percentage reference Factor, measured defined frequency. values Factor normalized maximum value 100%. VSWR (Return Loss) VSWR measure mismatch input device, again frequency dependent. Uncertainty uncertainty, normally expressed percentage, indication maximum error associated with measurements. mainly caused imported uncertainties from audit sensor from instrumentation accuracy. Some uncertainty also come from multiple reflections between source device input. Linearity Factor addition using standard power sensor calibration information, Aeroflex microwave test sets power meters make sensor's linearity factor further increase accuracy measurements. Measurement Techniques Employed conventional method establishing Factor substitution method. This generally time consuming very labor intensive. ease these problems maintain highly
Microwave Power Sensor Calibration system designed Aeroflex based system that operation production facility. system modular, configured calibrate variety power sensors detectors, including Aeroflex EEPROM detectors sensors from third party vendors. System core modular system been designed calibrate power sensors detectors range 26.5 GHz. Additional options available frequencies outside this range. list detailing sensors detectors that calibrated contained Specification section this data sheet. parameters provided system detailed below. Where appropriate, they measured against frequency printed table produced each device calibrated. addition, Factor information supplied label side sensor.
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accurate calibration with very uncertainties, alternative method been developed. technique used measures Factor relative reference head. With this method, power from source passed through splitter. output splitter goes sensor under test (the test port), other reference head. combination splitter reference head known splitter fixture. This supplied with initial calibration data (traceable national standards) which characterizes with documented uncertainties associated with supplied calibration laboratory. Aeroflex system, device used splitting power resistor splitter. system, both these resistors resistors. option when using this method feed back level detected reference head keep splitter output constant. splitter resistor junction then acts virtual earth makes test port input appear perfect match. alternative method used Aeroflex keep splitter output power constant measure output from reference head same time output from device under test measured. Calculations show that expressions derived matching this ratio-based system identical those derived levelling system. system fully automated runs under software control, with only manual intervention being connection disconnection device being calibrated. Under ratio conditions, Calibration Factor device under test, given Where: C(f) Indicated power frequency Reference indicated power frequency Data frequency standard head (Splitter Reference Detector combination) Measured calibration factor frequency PI@f PR@50MHz C(f) PR@f PI@50MHz
test port match directivity significantly better, giving improved accuracy reduced uncertainty. frequencies from VSWR measurements made with 6203B autotester. Linearity Factor linearity factor facility implemented addition precision programmable attenuator, type 2186. Optional Configurations cover lower frequency range MHz, additional instrumentation required measuring Factor. power source this range signal source type 2030. addition, VSWR measurements, network analyzer reflection analyzer used. 26.5 cover higher frequency range, 26.5 GHz, Microwave Test type 6203B replaced Microwave Test type 6204B. System Housing system housed desk/console. based proprietary equipment specifically designed meet special environmental specifications. standard core system covers frequency range 26.5 Factor Return Loss measurements. consists Microwave Test Set, type 6203B Reflection Analyzer, type 6210 Power Meter, type 6960B off) Autotester Digital Multimeter off) (Pentium), Controller, Printer Kits Traceability Measurements power sensors power splitter fixtures used this system NAMAS calibrated NAMAS calibration laboratory. company operated NAMAS calibration laboratory (Reg. LAB0006) since 1968, offering NAMAS calibration parameters covering GHz. suitable range calibrated splitter fixtures/detector/sensor jigs audit standards offered accessories. Supplied Software system software written Visual BASIC based software system used Aeroflex production facility Stevenage. software provides graphical man-machine interface characteristic Windows applications, guides operator actions. addition printing full measurement results, system will print labels attaching devices under test.
normalized Factor given: Cal@f Factor range
Basic System Configuration frequencies from 26.5 GHz, signal source Aeroflex Microwave Test Set, 6203B. This feeds relevant test fixture. This precision mechanical design hold splitter fixture rigidly. power measurements made using Aeroflex power meters, each signal path. Each power meter used feed DMM, more accurate reading. VSWR measurements frequencies from 26.5 GHz, Reflection Analyzer, 6210, used conjunction with 6203B Microwave Test Set. Using 6210 gives advantages over conventional autotester makes return loss measurements with much smaller measurement uncertainty. addition,
SPECIFICATION
Basic System 26.5
Sensors Detectors 6910 6930 6230 6233L 6911 6230A 6913 6230L 6920 6233 6923 6233A
Frequency Option:
Sensors 6912 6932 6232A
High Frequency Option: 26.5
Sensors Detectors 6914 6934S 6234 6914S 6234A 6924 6234L 6924S 6934
Linearity Factor Option
Sensors listed Sensors
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always seeking improve products, information this document gives only general indication product capacity, performance suitability, none which shall form part contract. reserve right make design changes without notice. trademarks acknowledged. Parent company Aeroflex, Inc. ©Aeroflex 2004.
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Part 46891/089, Issue 11/04

Power Sensor Calibration System Automated calibration system thir

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