SYSIIB Overview
Contents
1. 440 466 6110 E mail sales tegam com ra JTEGAM System Overview POWER SENSOR RESPONSE D Figure 1 System IIB Description of System IIB Functional Description The TEGAM System IIB is a precision power measurement system that measures microwave power within the frequency bandwidth of the thermistor standard s being used in the system The primary application of this system is for automated power sensor calibration directly traceable to primary standards The System IIB has three main components an RF Power Standard a Dual Type IV Power Meter and Automated Calibration Software The RF Power Standards are temperature controlled thermistor based RF power sensors which come in a two basic configurations Terminating Reference Standards and Feedthrough Working Standards There are different models of both configurations based on frequency range For more information about TEGAM RF power standards refer to the Coaxial Power Standards Instruction Manual IM 300 The Dual Type IV Power Meter Model 1806A has two self balancing DC substitution bridges that detect changes in RF power applied to a thermistor type power sensor Changes in DC substituted power are used to accurately calculate an RF power level which is then used for comparison with the power level detected by the Device Under Test DUT The ratio of the two power levels is the DUT calibration factor For more information refer to the 1806A Dual Type IV Power2. Meter Instruction and Service Manual 1806A 901 01CD SureCAL Automated Calibration Software is used to automate the calibration process Measurements are transmitted on a serial bus The software calculates results and uncertainty prints reports certificates and labels and will update sensor EPROM s For more information refer to the SureCAL Test Manager V5 User s Guide and SureCAL s Tips for First Time User s of the Power Sensor Support Package System IIB RF Power Sensor Calibration System 1 TEGAM System Overview Physical Description All System IIB packages include 1806A with ANSI NCSL Z540 1 1994 Compliant Calibration with Data SYSI1 SureCal software 138 645A accessory kit Three 1583 3 GPIB cables 1585 1008 RF cable Refer to the Table 1 below for additional items included with each system package Table 1 Instruments Specific to Each System IIB Package Model F1130 M1130 F1135 M1135 1820 Description Working Standard Reference Standard Working Standard Working Standard Mount Heater for 100 kHz to 18 xX 100 kHz to 18 a 0 01 to 26 5 0 01 to 26 5 a Two a SYSIIB k18 100 kHz to 18 GHz 100 kHz to 18 GHz 10 MHz to 26 5 GHz SYSI1B 26B 10 MHz to 26 5 GHz 100 kHz to 26 5 GHz 100 kHz to 26 5 GHz Specifications Refer to the Coaxial Power Standards Instruction Manual IM 300 and the 1806A Dual Type IV Power Meter Instruction and Service Manual 1806A 901 01CD for physical and elec
3. of the Standard and impedance mismatch When an RF Power Standard is calibrated an uncertainty is reported for each calibration point This uncertainty figure is one of the largest contributors to the uncertainty budget for the calibration at the next level Impedance mismatch causes some of the RF power to be reflected back from one device to another thus the maximum amount of RF power is not transferred from one device to another Reflection coefficient of an RF device is a vector quantity that describes how much its impedance varies from the nominal 50 Ohms The reflection coefficient for TEGAM RF Power Transfer Standards is included as part of the factory calibration data If both the magnitude and phase angle of the reflection coefficient are known for the DUT then Gamma corrections can be applied to the calibration factor Applying Gamma corrections to the calibration factor reduces the total uncertainty of the calibration by eliminating the impedance mismatch term System IIB RF Power Sensor Calibration System 5 TEGAM System Overview Contacting Tegam In the event of any questions or concerns regarding the System IIB contact TEGAM An apparent malfunction of the system may be corrected over the phone or by e mail Contact TEGAM using the following Tegam Incorporated 800 666 1010 toll free Ten Tegam Way 440 466 6100 phone Geneva OH 44041 USA 440 466 6110 fax ww tegam com sales tegam com e mail DO NOT send any instruments ba
4. 5 and F1130 and a 3 5 mm female on the F1135 Proper care cleaning alignment and torquing of coaxial connectors should be practiced to reduce insertion loss and extend the life of the connectors The RF input on the Terminating Reference Power Standards Models M1125 M1130 M1135 is a male coaxial connector that is connected to the RF power source to be measured This connector is a type N on the M1125 and M1130 and is a 3 5 mm on the M1135 Again proper care cleaning alignment and torquing of coaxial connectors should be practiced to reduce insertion loss improve repeatability and extend the life of the connectors The Model 1806A does not measure the RF power level directly Instead a Digital Voltmeter DVM measures DC voltages before and after the application of RF power to the thermistor based standard The 1806A VOLTMETER red and black connectors are connected to the DVM DC voltage positive and negative input connectors respectively The VOLTMETER connectors are 5 way binding posts so banana plugs or spade lugs can be used SureCAL Automated Calibration Software controls the DVM signal generator and DUT power meter through an IEEE 488 General Purpose Interface Bus GPIB Each of these instruments should be connected to the PC where SureCAL is installed using quality EEE 488 GPIB bus cables Three cables are included in every System IIB package Each instrument will need to have a unique GPIB address that will be entered into SureC
5. AL System IIB RF Power Sensor Calibration System 3 System Overview gii W IS S y UM SAOSUSS J MOd JY Hulesqiyesy 104 dnyas jedIdAL zZ sunbiy jeQains O QO indino 4H Nuluuny Jd SPUBLULUOZD 3497 JAMO pue ADUENbel4 gk ak JO e1BUSDY JeUBIS ak 5d Jojsuel Ep poinseoyy INS W01 JUSWSINSeS I V908L IPPON 19N 1 MOd Al d L Jeng 1943 1 MOd System IIB RF Power Sensor Calibration System TEGAM System Overview Operation Once the standard s has been correctly connected to the 1806A allow at least 2 hours for the Standard to reach operating temperature after connecting the heater The READY indicator on the 1806A will illuminate once the mount has reached its operating temperature Allow at least one hour after the BIAS VOLTAGE terminals are connected before taking any measurements The SureCAL software included in the System IIB takes care of all the measurement and mathematic operations necessary to characterize an RF power sensor The proceeding paragraphs are for information only The System IIB does not measure the RF power level directly Instead it uses a technique called DC substitution to determine RF power through DC voltage measurements A Digital V
6. TEGAM INC System IIB POWER SENSOR CALIBRATION SYSTEM System Overview PN SYSIIB 903 01CD Publication Date September 2006 REV A NOTE This user s manual was as current as possible when this product was manufactured However products are constantly being updated and improved Because of this some differences may occur between the description in this manual and the product received TEGAM is a manufacturer of electronic test and measurement equipment for metrology calibration and production test We also provide repair calibration and other support services for a wide variety of test and measurement equipment including RF power sensor calibration systems RF attenuation measurement systems resistance standards ratio transformers arbitrary waveform generators micro ohmmeters LCR meters handheld temperature calibrators thermometers humidity and temperature control devices and more TEGAM also repairs and calibrates test and measurement equipment formerly manufactured by Electro Scientific Industries ESI Gertsch Keithley Instruments Lucas Weinschel and Pragmatic Instruments A complete list can be viewed on our Product Service Directory at www tegam com For more information about TEGAM and our products please visit our website at www tegam com or contact one of our customer service representatives at sales tegam com or 800 666 1010 TEGAM Ten Tegam Way Geneva Ohio 44041 Telephone 440 466 6100 Fax
7. cal power sensor calibration To connect an RF Power Standard to the 1806A the heater in the standard must be connected to the 1806A s heater control connector To do this Simply connect one end the appropriate cable to the TEMP or heater connector on the standard and the other end to the TEMP connector on the 1806A For Models F1125 F1130 and F1135 use cable P N 1000008 for Models M1125 M1130 and M1135 use the cable P N CBL F1125 48 Both types of cables are supplied with the 1806A Next the BIAS VOLTAGE red and black connectors are cabled to the BIAS VOLTAGE red and black connectors on the TEGAM Model 1806A The BIAS VOLTAGE connectors are 5 way binding posts so banana plugs or spade lugs can be used Cables with spade lug connectors are supplied with the 1806A The RF IN on the Feedthrough Working Standards Models F1125 F1130 F1135 is an SMA female coaxial connector It is connected to the output of the chosen signal generator which should be 50 Ohm nominal impedance A low loss coaxial cable is recommended to avoid an excessive power loss The Working Standards have another additional female coaxial connector called the SENSOR port This connector is actually one of the arms of an RF power splitter The Device Under Test is connected to this port for calibration When the Working Standard is being calibrated the Terminating Reference Standard is connected to this port This connector is an N type female on the Models F112
8. ck to the factory without prior authorization When it is necessary to return an item contact TEGAM customer service to obtain an RMA Returned Material Authorization number You can contact TEGAM customer service via the TEGAM website www tegam com or by calling 440 466 6100 OR 800 666 1010 The RMA number is unique to your instrument and will help us identify your instrument and to address the particular service request by you which is assigned to that RMA number Of even more importance is a detailed written description of the problem which should be attached to the instrument Many times repair turnaround is unnecessarily delayed due to a lack of repair instructions or lack of a detailed description of the problem Warranty TEGAM Inc warrants its products to be free from defects in material and workmanship for a period of 1 year from the date of shipment During this warranty period if a product proves to be defective TEGAM Inc at its option will either repair the defective product without charge for parts and labor or exchange any product that proves to be defective TEGAM Inc warrants the calibration of its products for a period of 1 year from date of shipment During this period TEGAM Inc will recalibrate any product which does not conform to the published accuracy specifications In order to exercise this warranty TEGAM Inc must be notified of the defective product before the expiration of the warranty period The c
9. oltmeter DVM measures DC voltages before and after the application of RF power to the thermistor based Standard The amount of RF power detected by the thermistor is derived from those voltage measurements The cal factor for the DUT is determined by dividing the power read by DUT power meter by the RF power detected by the standard For more details refer to the 1806A Dual Type IV Power Meter Instruction and Service Manual 1806A 901 01CD and the Coaxial Power Standards Instruction Manual M 300 It may be necessary to use an adapter or attenuator to calibrate a particular power sensor If the sensor s power range is below 0 dBm 1 mW then an attenuator is needed If the sensor does not have a male connector that is the same type as the SENSOR port of the Working Standard then an adapter would be needed A 50 to 75 Ohm matching pad is needed to calibrate 75 Ohm sensors Any device placed between the SENSOR connector and the DUT will affect the calibration results and its loss attenuation must be characterized and corrected for A kit containing some adapters and attenuators along with correction data P N 138 645A is included with the System IIB The characterization data is provided in a format that the SureCAL software can use to correct for losses in the device Due to the high repeatability of the RF Power Transfer Standards and the accuracy of the Type IV Bridge the major sources of error stem from the uncertainty of the calibration factor
10. trical specifications Additional equipment Table 1 2 lists the additional equipment required to calibrate RF power sensors with the System IIB The description for each piece of equipment listed states the minimum recommended requirements for that piece of equipment There may be many models that meet the minimum requirements it is up to the operator to select the specific model Measurement uncertainty will vary depending on the additional equipment used Please refer to the specifications for the particular model to get that information 2 System IIB RF Power Sensor Calibration System TEGAM System Overview Table 1 2 Additional Equipment Required Signal Generator Continuous Wave 6 dBm to 12 dBm output power Frequency Range compatible to standard s two may be required to cover entire Frequency Range DVM DC Volts 64 digit minimum resolution RF Power Meter Compatible with the device under test IBM compatible PC Pentium class processor 200MHz 32MB RAM WINDOWS 95 98 NT Me 2000 or XP Operating System with utilities 300 MB Hard Drive 8X CD ROM Drive to load SureCAL software and periodic updates National Instruments or Hewlett Packard EEE 488 Bus controller board parallel port for report printing unless connected to a local area network and serial port for label printer Connecting the System IIB Figure 2 shows how to connect the functional components of the System IIB and the additional equipment for a typi
11. ustomer shall be responsible for packaging and Shipping the product to the designated TEGAM service center with shipping charges prepaid TEGAM Inc shall pay for the return of the product to the customer if the shipment is to a location within the country in which the TEGAM service center is located The customer shall be responsible for paying all shipping duties taxes and additional costs if the product is transported to any other locations Repaired products are warranted for the remaining balance of the original warranty or 90 days whichever period is longer Warranty Limitations The TEGAM Inc warranty does not apply to defects resulting from unauthorized modification or misuse of the product or any part This warranty does not apply to fuses batteries or damage to the instrument caused by battery leakage 6 System IIB RF Power Sensor Calibration System TEGAM System Overview Statement of Calibration TEGAM s instrument have been inspected and tested in accordance with specifications published by TEGAM Inc The accuracy and calibration of this instrument are traceable to the United States National Institute of Standards and Technology through equipment which is calibrated at planned intervals by comparison to certified standards maintained in the laboratories of TEGAM Inc System IIB RF Power Sensor Calibration System 7
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