Noise Calibration Systems and Components - Maury Microwave

A l s o A v a i l a b l e f r o m M a u r y M i c r o w a v e –MAURYVNA Calibration Kits,Microwave Components,Calibration Standards& Adapters Catalog• Precision VNA, PNA, ENACoaxial & Waveguide Calibration Kits• Precision Calibration Constants• Precision Microwave Components• Precision Coaxial & Waveguide-to-CoaxialAdapters• Precision Test Port Cable & Adapter Kits• Manual TunersMAURYRF DeviceCharacterizationSystems• Maury Device Characterization Software• Maury Automated Tuners• Noise Receiver Modules, Triplexers &Diplexers, Load Pull Test Fixtures &Automated Sliding Shorts• Manual Tuners• Advanced Device CharacterizationSystemsFor The Most Up-To-Date Information VisitMAURYMW.COM

Noise Calibration Systems and ComponentsGeneral InformationHow To Order Maury ProductsOrders may be placed directly with the factory or in care of yournearest Maury sales representative. For orders originating outsidethe United States, we recommend placing the order through yourlocal Maury sales representative. Maury maintains an extensivenetwork of sales representatives throughout the world. To findyour local Maury sales representative use the interactive indexon our web site at maurymw.com/srx.htm.Pricing and QuotationsPrices for Maury products are those prevailing when an order isplaced except when the price is established by formal quotation.Maury Microwave reserves the right to change prices at any timewithout notice. Price and availability of products with customor special features must be verified by a valid, formal factoryquotation. Maury quotations are valid for a maximum of 30 days.Extensions beyond 30 days can be granted only by the factory.Terms of SaleDomestic terms are net 30 days from the date of invoice forcustomers with established credit F.O.B. Ontario, California.Please refer to Maury Form 228 for complete terms andconditions. For International sales, please refer to Maury Form250. Sales to Canada are covered by Maury Form 251. Theseforms are available on request, or may be found on our web sitein PDF format.ShipmentAll shipments are at the buyer’s expense. Shipments are normallymade using methods and carriers specified by the customer.In the absence of specific instructions, Maury will ship at ourdiscretion by the most advantageous method. All shipments areF.O.B. the Maury factory in Ontario, California (U.S.A.) and,unless otherwise specified, will be insured at full value at thecustomer’s expense. Shipments are packed to provide amplesafety margin against transit damage, and there is no charge forregular packing requirements. Additional charges apply to MIL-SPEC preservation, packaging, packing and marking.Product and Specifications ChangesThe information, illustrations and specifications containedin this catalog were current at the time of publication. MauryMicrowave is continually striving to upgrade and improve ourproduct offering and therefore, reserves the right to changespecifications, designs and models without notice and withoutincurring any obligation to incorporate new features on productspreviously sold.Because products are changed or improved with time,please consult your local Maury representative, or our SalesDepartment, for current pricing and product information beforeplacing orders.Product SelectionMaury representatives and sales office personnel are wellqualified to provide assistance in product selection, and currentpricing and availability. Our factory applications engineers areready to assist you with any technical or applications questionsyou may have.Service and SupportWarrantyMaury Microwave is highly confident that our products willperform to the high levels that our customers have come toexpect. As an expression of that confidence, our products arewarranted as noted in the abbreviated warranty statementsbelow. (For a complete statement of the hardware warranty,please see Form 228, Terms and Conditions of Sales. For acomplete statement of the software warranty, please see Form273, Maury License Agreement.)Maury Microwave hardware products are warranted againstdefects in material and workmanship for a period of one yearafter delivery to the original purchaser. If a Maury manufacturedhardware product is returned to the factory with transportationprepaid and it is determined by Maury that the product isdefective and under warranty, Maury will service the product,including repair or replacement of any defective parts thereof.This constitutes Maury’s entire obligation under this warranty.Maury warrants that, for a period of ninety (90) days followingpurchase, software products, including firmware for usewith and properly installed on a Maury designated hardwareproduct, will operate substantially in accordance with publishedspecifications, and that the media on which the product issupplied is free from defects in material and workmanship.Maury’s sole obligation under this warranty is to repair or replacea nonconforming product and/or media, provided Maury isnotified of nonconformance during the warranty period. Maurydoes not warrant that the operation of the product shall beuninterrupted or error-free, nor that the product will meet theneeds of your specific application.The warranty does not apply to defects arising from unauthorizedmodifications, misuse or improper maintenance of the product.Warranty service is available at our facility in Ontario, California.Service ReturnsRepair and calibration services are available for Maury productsfor as long as replacement parts are available. On someinstruments, support services may be available for up to tenyears.Quality ProfileMaury Microwave Corporation enjoys a well-earned reputationfor excellent, technically advanced products that are reliable,meet specifications, and provide a quality appearance.Maintaining and improving this reputation requires adherenceto strict quality standards that are set forth in a formal QualityDepartment Manual. This manual is distributed to all Maurymanagers, inspectors, and technicians. The Quality Manualcan be reviewed by our customers at our facility in Ontario,California.Our inspection and calibration systems are in accord with MIL-I-45208A and MIL-STD-45662A, respectively. Our overall qualitysystem has been approved through in-house surveys by many ofour customers including the U.S. Government. Our laboratory isANSI/NCSL Z540-1 compliant with traceability to NIST.MAURY MICROWAVE CORPORATION IS ANISO 9001:2000/AS9100:2004 REGISTERED COMPANY.MAURY MICROWAVE CORPORATION 6 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsCalibration and Repair ServicesCalibration ServicesAt Maury Microwave, our commitment to quality doesn’t endwith the sale of a product. In our stat-of-the-art microwavelaboratory we offer both ANSI/NCSL Z540-1 (MIL-STD-45662A)calibration and commercial level calibration services for everyproduct we produce. Our laboratory is ANSI/NCSL Z540-1 ISO10012-1 compliant with traceability to NIST (National Instituteof Standards and Technology.Each Maury Microwave product is shipped with a certificate ofconformance which assures that it has been tested and foundto be within operational tolerances. As these products are used,changes can occur which may result in an out-of-tolerancecondition. Periodic calibrations are therefore recommendedto maintain functional integrity. We are happy to perform thecalibrations you need at a reasonable cost.Please contact our Calibration and Repair – MeasurementServices Department to obtain quotations for the specificcalibration services you require. Quoted prices will coverthe cost of all applicable measurements and include writtencalibration reports documenting the mechanical and electricaldata. If parts are out of tolerance, the cost of repair orreplacement will be quoted for your approval prior to the startof any additional work.It is recommended that the following items be placed on a12-month re-calibration cycle:• Calibration Kits• Verification Kits• Coaxial Components for Laboratory Use• Waveguide Components for Laboratory Use• Automated Tuner Systems• Noise Calibration Systems (Cryogenic, Thermal and AmbientTerminations) Mechanical Products• Torque WrenchesConnector GagesRepair ServicesWe recommend annual re-calibration and refurbishment ofyour Maury products to ensure continuous measurementaccuracy. Because we are the original equipment manufacturerand users of Maury products, we understand the criticalperformance criteria of your measurement equipment.Therefore, we will always give you an honest evaluation of eachand every Maury part when repairs are required. We will alsoprovide you with options and our best recommendation foroptimum performance.Annual re-calibration and servicing guarantees:• Accuracy and Confidence in your Network AnalyzerMeasurements• Precision Connector Mating• Verification of Critical Mechanical and ElectricalSpecifications• All Interfaces Meet “As New” Mechanical Specificationsto Ensure Predictable S-Parameter Performance• Prolonged Life of Both Maury Measurement Standardsand Your Network Analyzers• Confidence That Your Maury Product Will Be As PreciseAs When First Delivered• Refurbishment Done Right and Done Here In Our Factory• Guaranteed Genuine Maury Parts and Quality• We Design It, We Build It, We Calibrate It, We Repair It!Benefits of Maury Calibration and Repair:• Calibration and Repairs Performed Directly By The OEM(No Middleman Delays or Mark-Ups!)• Complete Confidence In Your Measurements• Protects Your Costly Network Analyzer Investment• Maintains Your ANSI/ISO Compliance and NISTTraceabilityMAURY MICROWAVE CORPORATION 7 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsNoise Calibration Systems and ComponentsMT7149D12WR10 75–110 GHzNoise Calibration SystemIntroductionThe Maury Noise Calibration Systems (NCS) are self-contained,highly accurate sources of RF and microwave noise power.These systems are used wherever noise source accuracy iscritical. Examples are: receiver noise measurements such asnoise figure and effective input noise temperature; calibrationof solid state noise sources; evaluation and verification of earthstation receivers; and as radiometer reference sources.bottles are pressurized to about 1,000 psi or more, the MT152Cpressurizing system is included.The hot noise source is a heated termination whose temperatureis maintained by proportional control to better than ±0.2K bythe MT155J controller. Actual temperature is indicated by adigital readout on the controller front panel.Each NCS consists of two (hot/cold) or three (hot/ambient/cold) thermal noise sources whose outputs can be convenientlyswitched into a single calibrated output port. This capabilitymakes for a unique combination of accuracy and convenience.The incorporation of the output switch makes the operation ofthe NCS in a noise performance measurement as convenientas a solid state noise generator – without the accuracy penaltyassociated with the latter. The plot shown at right illustrates theimprovement in accuracy that can be gained by the use of anNCS in a typical measurement application (effective input noisetemperature).The cold noise source is a liquid nitrogen (LN 2 ) cooledtermination. A liquid nitrogen level sensor and an automaticfill system maintains the proper nitrogen level. The usermust provide a suitable liquid nitrogen reservoir. The coldtermination is also pressurized with helium at 2 psi. Pressureis maintained by a regulator that requires 20 psi maximumfrom an external user-supplied source. Since most heliumMAURY MICROWAVE CORPORATION 8 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsNoise Calibration Systemsand Components(Continued)MT155JThe NCS consists of three assemblies:A. A component mounting plate which holds thecryogenic and heated termination assemblies,the hot/cold or hot/ambient/cold remotelycontrolled relay(s) and output assembly, and thehelium pressure regulator. The LN 2 level sensorand fill solenoid are mounted on the cover of thedewar flask.B. The MT155J controller (shown at right) whichcontains the temperature control circuitry anda digital temperature readout for the thermaltermination, the automatic or manual LN 2 fillcontrol circuitry and the remote noise temperatureoutput switch.The MT155J controller can be located up to 25 feet (7.6 meters) away from themounting plate.C. The MT155L control cable, 25 feet in length, whichconnects the controller to the mounting plate.Calibration of the hot/cold noise temperatures at the outputconnector of the NCS is provided at a number of frequencies.Each NCS model is calibrated at specific standard frequencies.Typically, waveguide units will be calibrated at the bandedges and the arithmetic center frequency of the waveguide.Coaxial units are generally calibrated at four data points withinthe frequency range of the connector type. For example,the MT7098J is a dual-load model equipped with a 7mmconnectors and transmission lines. Calibration for this unit isprovided at 3.95 GHz, 7.5 GHz, 12.4 GHz and 18.0 GHz.(Maury also offers the MT7250 series Noise Calibration SweptData Module as a tool that allows users to work with other nonstandarddata points in addition to, or in place of the factorystandards. 1 ) Note that these noise temperatures are not criticalas long as they are accurately known.Typical NCS ModelsThe table below shows a some of the more popular NCSavailable from Maury. Each model is a complete systemmade up of the appropriate terminations assembledon a mounting plate, the MT155J controller and theinterconnecting cable. All dual-load systems shown consistof cold (LN 2 ) and heated terminations. The tri-load system(MT7208J) includes an ambient termination as well. Pleaseconsult our Sales Department if you do not see a noisecalibration system in this table suitable for your applicationor if you would like more detailed information on any ofthese systems.ModelFrequencyRange (GHz)TransmissionLineOutput ConnectorOr FlangeTypeMT7091B 10.0 — 12.4 WR90 MPF90 2 Dual-loadMT7093B 10.0 — 15.0 WR75 MPF75B 3 Dual-loadMT7094B 15.0 — 22.0 WR51 MPF51B 3 Dual-loadMT7095J 18.0 — 26.5 WR42 UG595/U Dual-loadMT7096J 26.5 — 40.0 WR28 UG599/U Dual-loadMT7097 33.0 — 50.0 WR22 UG383/U Dual-loadMT7149J 75.0 — 110.0 WR10 UG385/U Dual-loadMT7098J DC — 18.0 Coaxial 7mm Dual-loadMT7208J 4 DC — 18.0 Coaxial 7mm Tri-load1 Maury data sheet 4E-020 provides specifics on the MT7250 series.2 Mates with the appropriate military (UG) and CPR flanges.3 Mates with most standard military and industrial flanges in this band.4 CE certified.MAURY MICROWAVE CORPORATION 9 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsCryogenic Noise TerminationsMT7025J with PowerSupply and Case.GeneralMaury cryogenic terminations are liquid nitrogen cooledloads which provide accurately known noise power at awell matched output port. Used with ambient and/or heatedterminations and a noise figure meter, these terminationsprovide cold reference temperatures needed for highly accuratenoise figure or effective input noise temperature measurements.Because of the accuracy of their noise output, cryogenicterminations are often used as a noise standard for calibrationof solid state noise generators.The accuracy achieved by these terminations is possiblebecause they utilize the known temperature of boiling liquidnitrogen as a constant for calculating noise temperature. Thismirrors the conceptual foundation of the noise standardsused in virtually all national standards laboratories worldwide(e.g.: NIST). Because of this, measurements made withthese terminations are traceable to the fundamental quantity,temperature and NIST via temperature and network calibrationstandards. Each unit is provided with a calibration report whichincludes VSWR and available output noise temperature dataat specific frequencies. Options for additional user-selectedfrequencies are available.The cryogenic terminations require user-provided liquidnitrogen and dry helium gas at 2 psi. Maury's MT152Apressurization system is available as an optional accessory toregulate the helium pressure (see page 13). The terminationsinclude a heater circuit which operates on 115 VAC to preventice from forming on the output connector and to prevent theheat load of the device under test from affecting the outputtemperature. On some models, operation at 230 VAC requiresthe addition of the Maury MT154A power adapter.MAURY MICROWAVE CORPORATION 10 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsMT7118J 7mm Coaxial Cryogenic TerminationsDC to 18.0 GHzFeatures• Accurate Noise Temperature AtSpecified Calibration Frequencies• Low VSWR Across The Full FrequencyRangeMT7118J• Liquid Nitrogen Cooled• Metrology Grade Calibration For SolidState Noise Generators• Low Noise Figure/TemperatureMeasurements• CE ApprovedDescriptionThe MT7118J cryogenic termination is a liquid nitrogen coolednoise source that provides accurately known noise temperaturesat specified calibration frequencies and low VSWR overthe full frequency range. It is used for performing accuratenoise temperature measurements in 7mm applications suchas certification of the noise performance of low noise earthstations. It is also used for general purpose, low noise figure/temperature measurements and calibration of solid state noisegenerators.The MT7118J comes with a universal input power supply thatoperates on line voltages of 100 – 240 VAC and 47 – 63 Hz,while supplying 48 VDC to the device power input.The MT7118J can be packaged with an extensive complementof options and accessories, including calibrated adaptersto other coaxial connector series and waveguide, and userspecified calibration frequencies. Our sales staff will be happyto assist in tailoring the best package for your application.The MT7118J can be optimized for VSWR and input noisetemperature over other bandwidths, additional calibrationpoints or with calibrated bends for other operating orientations.SpecificationsFrequency Range.............................................. DC to 18.0 GHzMaximum VSWR:.................................. 1.06, DC to 4.0 GHz1.10, 4.0 to 12.0 GHz1.15, 12.0 to 18.0 GHzOperating Temperature (Load)............ 77.36°K (liquid N cooled)Calibration Frequencies & Noise TemperatureUncertainty..................................................................... ±1.5 KConnector..........................................................................7mmOperating Orientation............................................... HorizontalOperating Life.................................. 2 hours minimum (one fill)Dewar Capacity................................................................1 literWeight.............................................. 7 lbs approximate (empty)Pressurization......................... 2 psi helium gas (external supply)AC Power......................................100 to 240 VAC, 47 to 63 Hz6.0 amps maximumAccessories (provided)........................One (1) two meter powercord and a woodeninstrument casePressurizing SystemMaury cryogenic terminations require helium gas pressurizationat 2 psi. The optional MT152A pressurizing system (see page13) provides the valves, gages, and hardware necessary toconnect an external helium gas supply to Maury cryogenicterminations (helium gas supply is not provided).Note: For calibration at additional or other frequencies, see theinformation on Maury’s MT7250 series Noise Calibration Swept DataModule software (pages 14 – 15), or consult our Sales Department.MAURY MICROWAVE CORPORATION 11 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsWaveguide Cryogenic TerminationsMT70xx SERIESFeatures• Accurate Noise Temperature AtSpecified Calibration Frequencies• Low VSWR Across The Full FrequencyRange• Liquid Nitrogen Cooled• Metrology Grade Calibration For SolidState Noise Generators• Low Noise Figure/TemperatureMeasurements• CE ApprovedMT7025JDescriptionMaury offers waveguide cryogenic terminations in severalstyles and a wide range of waveguide sizes from WR430through WR15. The chart below represents a typical sampleof the available terminations.Waveguide terminations are generally calibrated at threefrequencies – high, low and arithmetic center – withinthe applicable frequency range; however, they can becalibrated at any user-specified frequency within thewaveguide band (using Maury MT7250 Noise CalibrationSwept Data Module (see pages 14-15). Additional user-specified calibration frequencies are also available as anoption.In addition to liquid nitrogen, these terminations requirepressurization with helium gas (not provided) at 2 psi. TheMT152A pressurizing system (see page 13) is available toprovide proper regulation of the helium supply.The MT70xx series units come with a universal input powersupply that operates on line voltages of 100–240 VAC and47–63 Hz, while supplying 48 VDC to the device powerinput.Available Model Series (Typical)ModelFrequencyRange(GHz)EIAWaveguideSizeVSWR(maximum)MT7040( ) 7.05 — 10.0 WR112 1, 2 1.08MT7041( ) 10.0 — 12.4 WR90 2 1.10MT7042( ) 10.0 — 15.5 WR75 3 1.08MT7043( ) 13.0 — 15.0 WR62 2 1.10MT7044( ) 15.0 — 22.0 WR51 3 1.10MT7021( ) 18.0 — 26.5 WR42 2 1.08MT7022( ) 26.5 — 40.0 WR28 2 1.10MT7023( ) 33.0 — 50.0 WR22 2 1.10MT7025( ) 50.0 — 75.0 WR15 2 1.15MT7027( ) 75.0 — 110.0 WR10 2 1.20Calibration UncertaintyFrequency Range(GHz)CalibrationUncertainty< 18.0 ±1.5 K18.0 — 40.0 ±1.5 K40.0 — 50.0 ±1.8 K50.0 — 110.0 ±2.6 K1 Flange mates with the applicable CPR flange.2 Flange mates with the applicable CMR flange.3 Flange mates with the applicable military (UG) flange.4 Flange mates with most applicable military and industrial flanges.MAURY MICROWAVE CORPORATION 12 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsCryogenic Termination AccessoriesMT152A/C Helium PressurizingSystemsMaury cryogenic terminations must be supplied withhelium gas at about 2 psi to purge contaminants (air,carbon dioxide, etc.) from the coaxial or waveguidetransmission line (connecting the cooled terminationto the output connector) before the dewar is filledwith liquid nitrogen. For stand-alone cryogenicterminations, the MT152A regulates the helium supplyby use of a two-stage pressure regulator preset toprovide 2 to 3 psi output pressure and a safety pressurerelief valve set to 4 psi. These are included with an 8foot hose and CGA-580 fittings for connecting yourhelium supply to the termination.Maury dual-load and tri-load noise calibration systemsare provided with the MT152C helium pressurizingsystem, a modified version of the MT152A, whichserves the same purpose.MT152ACalibrated Adapters SetsMaury offers a wide range of calibrated adapters andadapter sets that are used with the MT7118J cryogenictermination and the MT7108B thermal termination toadapt the precision 7mm output port to other coaxialseries or to waveguide at specific frequencies. They arecalibrated for VSWR and insertion loss to allow theirinput noise temperature to be calculated.The chart at right lists the available models and sets.These are also available separately; however, sincethe use of adapters affects measurement accuracyand limits stability or repeatability in waveguideapplications, better accuracy is achieved (andoperation of the termination is simpler) when they arepurchased and calibrated with your instrument. (Mauryrecommends purchase of your instrument with theconnector type or waveguide flange needed.)Maury also offers cryogenic and thermal terminationscalibrated at user-specified or standard frequencies.Please consult our Sales Department for moreinformation.Available ModelsModelConnectorTypeDescription 1MaximumVSWRDC – 4.0 GHz, 1.048022M 3.5mm One (1) each female and male adapter calibrated at 3.95, 7.5, 12.4, and 18.0 GHz. 4.0 – 18.0 GHz, 1.08DC – 18.0 GHz, 1.032606M Type N One (1) each female and male adapter calibrated at 3.95, 7.5, 12.4, and 18.0 GHz. 4.0 – 9.0 GHz, 1.049.0 – 18.0 GHz, 1.072607M GR900 One (1) adapter calibrated at 3.95, 7.5, 12.4, and 18.0 GHz. DC – 8.5 GHz, 1.04R229E WR430 One (1) w/g to 7mm end launch adapter calibrated at 2.25, 2.295 and 2.388 GHz. 1.7 – 2.6 GHz, 1.10E229D WR229 One (1) w/g to 7mm end launch adapter calibrated at 3.7, 3.95 and 4.2 GHz.3.3 – 4.9 GHz, 1.10F229D WR159 One (1) w/g to 7mm end launch adapter calibrated at 4.9, 6.0 and 7.05 GHz.4.9 – 7.02 GHz 1.10H229D WR112 One (1) w/g to 7mm end launch adapter calibrated at 7.5, 8.0, 8.212 and 8.4 GHz. 7.05 – 10.0 GHz, 1.05X229D WR90 One (1) w/g to 7mm end launch adapter calibrated at 11.7, 11.95 and 12.2 GHz. 8.2 – 12.4 GHz, 1.05M229D WR75 One (1) w/g to 7mm end launch adapter calibrated at 14.0, 14.25 and 14.5 GHz. 10.0 – 15.0 GHz, 1.05P229D WR62 One (1) w/g to 7mm end launch adapter calibrated at 12.4, 15.0 and 18.0 GHz. 12.4 – 18.0 GHz, 1.051 Calibration and VSWR at other frequencies is available upon request. Contact our sales department for assistance.Key literature – Maury data sheet 4A-008A and 4A-008B.MAURY MICROWAVE CORPORATION 13 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsNoise Calibration Swept Data ModuleMT7250 SERIESFeatures• Multiple Data Points• Effective NoiseTemperature Calculator• Effective Noise TemperatureInterpolator• Certified Calibration ReportGenerator• Standard and User-DefinedFrequenciesDescriptionMaury cryogenic and thermal terminations, whetherstand-alone models or components of Maurynoise calibration systems, are calibrated for hot/cold noise temperatures at their output connectorsfor a number of frequencies. Waveguide units aretypically calibrated at specific standard frequenciesor data points at the band edges and the arithmeticcenter frequency of the waveguide. Coaxial units aregenerally calibrated at four data points within thefrequency range the connector type is rated for. Mauryoffers the MT7250 series Noise Calibration Swept DataModule as a tool that allows users to work with other,non-standard, data points in addition to, or in place of,the factory standards.The MT7250 series Swept Data Module Software workswith Microsoft® Excel® 20031 (or later) to give usersthe ability to generate standardized, or customized,Maury-certified calibration reports for any Maurycryogenic termination, thermal termination or noisecalibration system. The data module can be suppliedwith a new unit at time of purchase, or with a recertifiedunit.The Effective Noise TemperatureCalculatorThe Effective Noise Temperature Calculator usesmeasured loss and actual temperature data to produceMaury-certified calibration reports. These reportsare based on a) pre-measured data points (as shownin the table on the page 15), or b) a user-definedor customized set of measured data points, or c) acombination of both.The Effective Noise TemperatureInterpolatorFor use as a reference tool, the built-in Effective NoiseTemperature Interpolator can be used to generate noisetemperatures for non-measured data points within thedata band of interest.1 Not provided.MAURY MICROWAVE CORPORATION 14 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsTypical Excel® spreadsheet showingthe MT7250 Swept Data Module userinterface (above) and a sample Maury-Certified Calibration Report (at right).Standard Pre-Measured Data PointsWaveguide or Line Frequency Band (GHz) Step SizeWR51 15.0—22.0 0.10WR42 18.0—26.5 0.10WR28 26.5—40.0 0.25WR22 33.0—50.0 0.25WR15 50.0—75.0 0.50WR10 75.0—110.0 0.507mm 0.2—18.0 0.20MAURY MICROWAVE CORPORATION 15 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsAmbient Terminations2659AJ309BDescriptionMaury ambient terminations are room temperature noisesources consisting of a stable termination in a massive copperhousing to provide thermal stability and to reduce the effects ofthermal transients.These terminations are used as a reference temperature noisesource for highly accurate noise figure or effective inputnoise temperature measurements, as an “on-line” standardfor calibrating the operating noise temperature of low noisereceiving systems, and in the calibration of solid state noisegenerators.Each unit is provided with a direct reading dial thermometercalibrated from -5° to 45°C with better than 0.5° resolution andaccuracy. The thermometer receptacle in the housing will alsoaccept a quartz thermometer probe which, when connectedto an appropriate unit, will provide for a remote temperaturereadout.The units listed below are typical of those available. Pleaseconsult the factory for terminations in waveguide sizes,connector types or frequency ranges not shown here.Available ModelsModelFrequencyRange (GHz)VSWR(maximum)Connector or EIAWaveguide Size1.02, DC — 1.02459A DC — 8.5 1.04, 1.0 — 4.0 14mm (GR900)1.06, 4.0 — 8.51.04, DC — 4.02659A DC — 18.0 1.08, 4.0 — 12.0 7mm1.10, 12.0 — 18.0R309B 2.2 — 2.3 1.05 WR430 1E309A 3.7 — 4.2 1.05 WR229 1X309A 8.2 — 12.4 1.05 WR90 2M309A 10.0 — 15.0 1.05 WR75 3P309A 12.4 — 18.0 1.05 WR62 2K309B 21.0 — 23.0 1.05 WR42 2J309A 33.0 — 50.0 1.05 WR22 2U309B 36.0 — 38.0 1.05 WR28 21 Flange mates with the applicable CPR flange.2 Flange mates with the applicable military (UG) flange.3 Flange mates with most applicable standard military and industrialflanges.MAURY MICROWAVE CORPORATION 16 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsHOT THERMAL NOISE TERMINATIONSMT151CMT7090JGeneralMaury thermal terminations are low-mismatch, heated loadsin a precisely controlled thermal environment which providean accurately known noise power. Used with ambient and/or cryogenic terminations and a noise figure meter, theseterminations provide the hot termination temperature neededfor highly accurate noise figure or effective input noisetemperature measurements. Because of the accuracy of thenoise output, thermal terminations are often used as a noisestandard for calibration of solid state noise generators.The accuracy achieved by these terminations is possiblebecause they utilize the proven concept of thermal (Johnson)noise operating in a precision thermal environment provided bythe MT151C temperature controller. (The MT151C is a highlystable, proportional temperature controller that is accuratelycalibrated against NIST-traceable temperature measuringequipment.) This is the same concept used in several nationalstandards laboratories and NIST at the higher microwavefrequencies.The termination and the controller are matched duringcalibration; therefore, the two instruments must be purchased asa unit. In addition, a line voltage option must be specified. Eachunit is provided with a calibration report which includes VSWRand available output noise temperature at specific frequencies.Options for additional or alternative user-selected frequenciesare available. Maury also offers the MT7250 series NoiseCalibration Swept Data Module as a tool that allows users towork with non-standard data points in addition to, or in placeof the factory standards 1 .) Other accessories such as specialinstrument cases and calibrated adapters to other coaxial seriesor waveguide are also available.1 See Maury Data Sheet 4E-020. See also pages 14-15.MAURY MICROWAVE CORPORATION 17 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsCoaxial Thermal TerminationMT7108BMT151CMT7108BDescriptionMaury offers a single thermal noise termination model (theMT7108B), which is equipped with a precision 7mm coaxialoutput connector, and operates from DC to 18 GHz. Thiscompact, reliable instrument is equally suited for both fieldmeasurements and laboratory use. It is generally used to makeaccurate low noise figure/temperature measurements andfor calibration of solid state noise generators. The flexibilityand versatility of the MT7108B are enhanced by an extensiveselection of options and accessories. These include calibratedadapters to other coaxial connector series and waveguideflanges, and factory calibration at user-specified frequencies.(Maury’s MT7250 series Noise Calibration Swept Data Moduleis offered as a tool that allows users to work with non-standarddata points in addition to, or in place of the factory standards 1 .)The MT7108B comes with a MT151C controller, with whichit is precisely matched during the initial factory calibration.For accurate performance, these units must be used together.The MT151C’s internal proportional controller responds tosensors in physical proximity to the termination and directs theMT7108B’s heater circuit to maintain the physical temperatureof the termination at 373.1 kelvins (100°C). Heavy insulationof the entire termination assembly minimizes the effects ofthe external environment. The MT151C’s line voltage must bespecified at the time of order. This ensures that the MT151Cwill be properly fuzed and shipped with the appropriate powercable (AC power option 22 for 100/120 VAC, 50/60 Hz, oroption 32 for 220/240 VAC, 50/60 Hz).SpecificationsFrequency Range................................................. DC to 18 GHzNominal Physical Load Temperature..............................373.1 KLoad Temperature Stability.............................................. ±0.2 KVSWR (maximum):DC to 4 GHz..................................................................1.064 to 12 GHz...................................................................1.1012 to 18 GHz.................................................................1.15AC Power (User specifies one of two options):Option 22.........................................100/120 VAC, 50/60 HzOption 32.........................................220/240 VAC, 50/60 HzNoise Temperature Uncertainty ...................................... ±0.7 KConnector........................................................ Precision 7mm 2Accessories Provided• One (1) MT151C controller• One (1) MT7005P controller cable• One (1) Instrument caseVSWR and noise temperature data are provided at fourfrequencies (3.95 GHz, 7.5 GHz, 12.4 GHz and 18.0 GHz). Acertified calibration report with traceability to NIST is providedwith each unit.1 See Maury data sheet 4E-020 for details, and pages 14-15 in this volume.2 Precision 7mm per Maury data sheet 5E-060.MAURY MICROWAVE CORPORATION 18 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsWaveguide Thermal TerminationsMT70xx SeriesMT151CMT7090JDescriptionMaury offers waveguide thermal terminations in several stylesand a wide range of waveguide sizes, from WR430 throughWR10. The chart below represents a typical sample of theavailable terminations.Waveguide terminations are generally calibrated at threefrequencies – high, low, and arithmetic center – within theapplicable frequency range; however, they can be calibratedat any user-specified frequency within the waveguideband. Additional user-specified calibration frequencies arealso available as an option. (Maury’s MT7250 series NoiseAvailable ModelsModelFrequency Range(GHz)EIA WaveguideSizeMaximumVSWRMT7005A 3.7 – 4.2 WR229 2 1.07MT7081A 10.0 – 12.4 WR90 3 1.10MT7082A 10.0 – 15.0 WR75 3 1.08MT7009B 15.0 – 22.0 WR51 1.10MT7084A 18.0 – 26.5 WR42 3 1.08MT7085A 26.5 – 40.0 WR28 3 1.10MT7086A 33.0 – 50.0 WR22 3 1.10MT7088B 50.0 – 75.0 WR15 3 1.20MT7090J 75.0 – 110.0 WR10 3 1.15Calibration Swept Data Module is offered as a tool that allowsusers to work with non-standard data points in addition to, orin place of the factory standards 1 .) Please contact our SalesDepartment for more information.The physical temperature of the waveguide terminations is 350kelvins with a stability of ±0.2 kelvins. These terminations arecalibrated with a specific temperature controller, and the twoinstruments are provided as a unit. A line voltage option mustbe specified at the time of order.Calibration UncertaintyFrequency Band(GHz)Uncertainty(Kelvins)< 18.0 ±0.70 K18.0 – 40.0 ±0.60 K40.0 – 50.0 ±0.65 K50.0 – 110.0 ±1.00 KAccessories Provided• One (1) MT151C controller• One (1) MT7005P controller cable• One (1) Instrument case1 See Maury data sheet 4E-020 and pages 14-15 in this volume.2 Flange mates with applicable CPR and CMR flanges.3 Flange mates with the applicable military (UG) flange.MAURY MICROWAVE CORPORATION 19 Noise Calibration Systems and Components

Noise Calibration Systems and ComponentsThermal Terminations – Options and AccessoriesTemperature Controller, MT151CA temperature controller is provided with each thermaltermination. The controller and the termination are calibratedtogether and are sold as a unit. A line voltage must be specifiedat the time of order:• Option 22 ............................ 100/120 VAC• Option 32............................. 220.240 VACInstrument CaseMost Maury heated terminations are supplied in a foam-linedinstrument case (like the one shown at below) for convenienthandling and storage. Please contact our Sales Department fordetails.MT7090J andcalibrated MT151CController andOperating Manualin a typical foamlinedInstrumentcase.MT151CCalibrated AdaptersYou can increase the utility of your Maury Cryogenic andThermal Terminations by using precision adapters to connectthe 7mm output port on the termination to other coaxialand waveguide connectors. However, as in any microwavemeasurement system, adding adapters degrades the accuracyof the data that can be obtained. In the case of waveguidemeasurement, stability and repeatability will also be degradedby the use of adapters. Therefore, for optimum performance,it is always recommended that a thermal termination withthe appropriate output port be used for specific measurementapplications.In situations where adapters must be used, it is critical thatthe adapters are calibrated so that the critical performanceparameters are known and can be calculated into themeasurements. Adapters can be calibrated separately, butbetter accuracy is achieved and operation of the terminationis simpler when they are purchased and calibrated with thethermal termination they will be used with.The table at right shows the adapters and adapter sets that areavailable from Maury. If you don’t see the adapter you need inthis table, please contact our Sales Department for assistance.All of these adapters are calibrated for VSWR and insertionloss so that their input noise temperature can be calculatedusing Maury technical note TN-011. The adapters are shippedwith a test report and operating note. When purchased with athermal termination, Maury can provide VSWR calibration ofthese adapters for an additional cost (quoted on request). Pleasecontact our Sales Department for further details.See page 13 for descriptions of the calibrated adapter sets.Typical 7mm between-series adapters.Model Maximum VSWR (GHz) Adapts 7mm to2606M1.03, DC–4.01.04, 4.0–9.0Type N (F & M)1.07, 9.0–18.08022M1.04, DC–4.01.08, 4.0–18.03.5mm (F & M)2607M 1.004 + 0.004ƒ 14mmR229E 1.05, 1.7–2.6 WR430E229D 1.05, 3.3–4.9 WR229F229D 1.05, 4.9–7.02 WR159H229D 1.05, 7.05–10.0 WR112X229D 1.05, 8.2–12.4 WR90M229D 1.05, 10.0–15.0 WR75P229D 1.05, 12.4–18.0 WR62MAURY MICROWAVE CORPORATION 20 Noise Calibration Systems and Components

MAURY MICROWAVEC O R P O R A T I O N2900 Inland Empire Blvd., Ontario, CA 91764TEL: (909) 987-4715 • FAX: (909) 987-1112Email: maury@maurymw.comWeb Site: http://www.maurymw.comCATALOG 1G-003c (8/11) PRINTED IN USA © 2011 MAURY MICROWAVE CORPORATION. ALL RIGHTS RESERVED.