Anritsu ME7840A Specifications

Do not exceed the operating input power level, voltagelevel,currentlevel,andsignaltypethatisappropriatefortheinstrumentbeingused.Refer toyourinstrumen

28. Remove the BNC female to BNC female adapter and install the stepattenuator in its place, as shown in Figure 3-7. Then set the attenu-ation to 10 d

PERFORMANCE TESTS RECEIVER MAGNITUDE DISPLAY LINEARITY TEST(MS462XC)MS462XX MM 3-23AttenuatorSetting (dB)AttenuatorCalibratorValueMarker 1Readout Valu

RECEIVER MAGNITUDE DISPLAY LINEARITY TEST (MS462XC) PERFORMANCETESTS3-24 MS462XX MMC.W. Freq(MHz)Source 1 Power SettingMarker 1 ReadoutValue10 dB – Ma

PERFORMANCE TESTS RECEIVER MAGNITUDE DISPLAY LINEARITY TEST(MS462XC)MS462XX MM 3-25C.W. Freq(MHz)Source 1 Power SettingMarker 1 ReadoutValue10 dB – Ma

3-9 NOISE FIGUREMEASUREMENTCAPABILITY(OPTION 4)This procedure is intended to verify the functionality of the noise figuremeasurement hardware and the

1. Press the Default key, then the 0 key to reset the instrument.2. Press the Appl key.3. Select:CHANGE APPLICATION SETUPMEASUREMENT TYPE/NOISE FIGURE

5. Press the Config key.6. Select:DATA POINTS/51 MAX PTS7. Connect the 15 dB ENR Noise Source to Port 2.8. Verify that the measured Noise Figure is wi

14. Connect a 3670 Series throughline between Port 1 and Port 2. Verifythat there is no glitch displayed on the LCD display (see below).15. Press the

3-10 NOISE FIGUREMEASUREMENTCONFIDENCECHECKThis test checks the Y-factor dynamic range of the instrument.EquipmentRequired:qAnritsu NC346B 15 dB ENR N

6. Select:FROM HARD DISK/INTERNAL ENR EXTENSION TABLETest Procedure: Press the Appl key.1. Select:CHANGE APPLICATION SETUPMEASUREMENT TYPE/TRANSMISSIO

Table of ContentsChapter 1 General Information1-1 SCOPE OF THIS MANUAL...1-31-2 INTRODUCTION ...

4. Follow the selection menu and use the corresponding soft key tomake the appropriate selections as listed below:PERFORM CAL: 2 PORTCAL METHOD: STAND

14. Use the rotary knob to enter SGAIN as the filename. Use the rotaryknob to highlight DONE. Press the ENTER key to save the data. Thisis the gain da

23. Verify that the measured Noise Figure of the Amplifier is between4.5 dB and 6.5 dB.24. Press the Appl key.25. Select:DISPLAY SELECTIONINSERTION GA

3-11 FREQUENCYTRANSLATINGGROUP DELAY(OPTION 5)This procedure is intended to verify the functionality of the FrequencyTranslating Group Delay measureme

16. Verify that the trace is within±3ns.Refer to Figure 3-13.17. If the test fails, proceed to Chapter 6—Troubleshooting.3-12 37SF50 PHASEHARMONICSTAN

Procedure: 1. Install the cables and adapters as shown in Figure 3-14.2. Press the Cal key to begin the measurement calibration.3. Follow the selectio

7. Press the Display key, then select:DISPLAY MODESINGLE CHANNEL8. Press the Ch 1 key and select:DISPLAYGRAPH TYPELOG MAGNITUDE9. Install the 37SF50 P

3-13 HARMONICOUTPUT CHECKThis procedure checks the harmonic output.EquipmentRequired:qAnritsu Spectrum Analyzer Model MS2602AqAnritsu 68x47B or 69x47A

Table of Contents4-1 INTRODUCTION ...4-34-2 CALIBRATION AND MEASUREMENT CONDITIONS ...4-4Standard Condition

2-4 RECEIVER MODULE ...2-10Down Conversion Module ...2-10Digital Interface ...

Chapter 4System PerformanceVerification4-1 INTRODUCTION This chapter provides specific procedures to be used to verify that theMS462XX is making accur

4-2 CALIBRATION ANDMEASUREMENTCONDITIONSThe surrounding environmental conditions and the stability and condi-tion of the test port connectors, through

4-3 PERFORMANCEVERIFICATION FORTHE MS462XA/B/DMODELSVerification of these instruments is accomplished by use of Anritsu soft-ware part number 2300-482

2300-482VerificationSoftware OverviewThe 2300-482 verification software package is included with the 366Xverification kit and it is also available sep

4-4 VNMSTRACEABILITYAccording to the International Vocabulary of Basic and General Terms inMetrology (VIM), BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML,

In the chart below, a widely used traceability path for making scatteringparameter measurements is presented. The basic elements in this chartinclude

Table of Contents5-1 INTRODUCTION ...5-35-2 RECOMMENDED TEST EQUIPMENT ...5-45-3 TEST CONDITIONS..

Chapter 5Adjustments5-1 INTRODUCTION This chapter provides calibration procedures to be performed as specifiedbelow:1. Perform the 10 MHz calibration

Chapter 3 Operational Performance Tests3-1 INTRODUCTION ...3-33-2 CHECKING THE SERVICE LOG/SELF-TEST ...

5-2 RECOMMENDEDTEST EQUIPMENTThe following test equipment is required to perform the procedures inthis chapter:qAnritsu ML2430A Series Power MeterqAnr

AutomaticCalibrationProcedure:1. Connect a GPIB cable (Anritsu 2100-2) between the EIP frequencycounter GPIB connector and the MS462XX dedicated GPIB

ManualCalibrationProcedure:1. On the MS462XX, press the UTILITY front panel key.2. Select the menu soft keys as follows:DIAGNOSTICSHARDWARE CAL (SERVI

3. Connect a coaxial RF cable between the Input connector of the fre-quency counter and Port 1 connector of the MS462XX, as shown inFigure 5-3 (previo

5-6 ALC ADJUSTMENTPROCEDUREThis procedure guides the operator through the Automatic Level Control(ALC) calibration routine for the MS462XX Vector Netw

6. Press the menu soft key to select the source to be calibrated:Select Source 1/27. Connect the power sensor to the selected port (Port 1 for Source

5-7 BACK-ENDATTENUATORCALIBRATION(OPTION 4X ONLY)The Back-end Attenuator calibration is used to characterize the attenu-ator in the Option Module for

5-8 NOISE SOURCESIGNAL INTERNALTHROUGH PATHCHARACTERIZATION(OPTION 4X ONLY)This procedure provides steps for characterizing the Noise Source SignalInt

2. Attach the throughline to both Port 1 and Port 2 of the Measure-ment unit (Figure 5-6).3. Perform a 2-Port, 12-Term calibration on the Measurement

Hint: Press the Hard Copy key to access this output function if the Mea-surement unit is a MS462XX VNMS. Press the Menu key under the HardCopy group i

5-6 ALC ADJUSTMENT PROCEDURE ...5-85-7 BACK-END ATTENUATOR CALIBRATION (OPTION 4X ONLY) ...5-105-8 NOISE SOURCE SIGNAL INTE

18. Copy this file to a floppy diskette.19. Insert the floppy diskette into the UUT floppy disk drive.20. Press the Appl key and then select the follo

Table of Contents6-1 INTRODUCTION ...6-36-2 SELF TEST ...6-36-3 TROUBLESHOOTING TOO

Chapter 6Troubleshooting6-1 INTRODUCTION It is strongly recommend that any MS462XX Vector Network Measure-ment System repair be performed by qualified

The extended self test is initiated by pressing the Utility key, then select-ing:DiagnosticsStart Self TestThe extended self test performs extensive t

TheTroubleshootingMenuThe Troubleshooting menu is shown in the graphic screen capture below.Descriptions of the menu selections follow.MS462XX MM 6-5T

SRAM This test verifies whether the internal SRAM is functioning properly. Ifthis test fails, the instrument beeps and the Front Panel LEDs flash. The

DRAM This test verifies whether the internal DRAM is functioning properly. Thedisplay will go blank when this test begins. If the test fails, the inst

6-4 HARDWARETROUBLESHOOTINGThe Scorpion Vector Network Measurement System hardware includesthe following:qCPU ModuleqSource Module(s)qReceiver Moduleq

Printer OutputProblemThis condition can be a result of a failure of the printer, printer cable, orCPU module.1. Connect a different printer and determ

Chapter 7 Removal and Replacement Procedures7-1 INTRODUCTION ...7-37-2 FRONT PANEL ...

Phase-lock LoopProblemIf the MS462XX detects a Phase-lock loop problem during normal opera-tion, an error code followed by a brief error message will

HET OSCILLATORVOLTAGEThis function (Figure 6-3) allows the user to verify whether the HET os-cillator of the Main Source Module is operating properly.

SOURCE 1 This function allows the user to verify that various parts of the mainSource Module are operating properly, and includes the following tests:

2. Select the menu soft keys as follows:DIAGNOSTICSSERVICE LOG3. Check the Power Distribution Unit output voltage.4. Use a frequency counter or Spectr

Troubleshooting tools include:qService Log: Error codes will be written to the service log alongwith some data representing system conditions at the t

A typical profile of unleveled power is shown in Figure 6-4. If the leveledtrace looks like the unleveled trace, it indicates that a problem has oc-cu

RECEIVERMODULEThere are four receiver module related system failures:q10 MHz Reference Oscillator failuresqALC failuresqRF Component failuresqNoise So

TROUBLESHOOTING HARDWARE TROUBLESHOOTINGMS462XX MM 6-17Figure 6-5. Rear Panel Showing Receiver Module Placed for Easy AccessReceiver ModuleFigure 6-6.

10 MHz ReferenceOscillatorProblemPossible causes are listed below:q10 MHz Reference Oscillator failureqPower Supply failureTroubleshooting tools inclu

Figure 6-7 shows the RF components layout in the Receiver Module. Fig-ure 6-8 shows the system cabling.TROUBLESHOOTING HARDWARE TROUBLESHOOTINGMS462XX

6-20 MS462XX MMHARDWARE TROUBLESHOOTING TROUBLESHOOTINGPri.Src1Opt.Src2Receiver ModuleOptions Bd.Front PaneluP BoardPDUSYSTEM CABLESHetrodyne OffsetCo

NOISE SOURCEPOWER SUPPLYThe following steps can help isolate noise source power supply failures:1. Use an oscilloscope to measure the Noise Source pow

FRONT PANELASSEMBLYThere are three Front Panel Assembly related failures:qNon responsive keysqNon responsive front panel knobqLCD Display problemsFron

6-5 SOFTWAREPROBLEMIt is important to provide the factory as many details of the conditionsimmediately preceding the onset of the problem. This import

2. Check DUT mating connector(s) condition and pin depth.3. Measure an alternate known good DUT, if possible.4. Check if the environment is stable eno

Account for a calibration performed with loss and later removed for themeasurement.Problem NOISE FIGURE OVERLOAD error message displayed:Solution DUT

Problem Fails the Raw Receiver Noise Figure Check:Solution Check the setup connections:1. Check the Noise Source ENR Table stored on the instrument. R

6-8 FREQUENCYTRANSLATINGGROUP DELAYMEASUREMENTThe measurement process consists of generating the modulating signal,modulating the source, demodulating

Table of Contents7-1 INTRODUCTION ...7-37-2 FRONT PANEL ...7-4Floppy Disk Drive Assem

Table of ContentsChapter 1 General Information1-1 SCOPE OF THIS MANUAL...1-31-2 INTRODUCTION ...

Chapter 7Removal and ReplacementProcedures7-1 INTRODUCTION It is strongly recommended that MS462XX Vector Network MeasurementSystem repair be performe

7-2 FRONT PANEL The MS462XX Vector Network Measurement System front panel assem-bly contains the following subassemblies (refer to Section 1-8 for a p

To completely remove the front panel from the instrument:5. Disconnect the floppy disk drive interface cable.6. Disconnect the front panel interface P

Floppy Disk DriveAssemblyTo remove the floppy disk drive, remove the drive with the mounting bracketsattached.9. Using a 5/16” nut driver, remove the

14. Separate the LCD module from the backing plate. If necessary, re-move the LCD backlight PCB from the plate (refer to the procedurebelow).Reverse t

BacklightFluorescent LampThe Backlight Fluorescent Lamp is secured to the LCD assembly. TheLCD assembly must be removed from the front panel before th

7-3 POWERDISTRIBUTIONUNITThe PDU is mounted inside the main cabinet and secured using twoscrews through the rear panel.Tools Required: Phillips screwd

Replacement is the opposite of removal.Fan AssemblyReplacement:The fan assembly (ND49520) is mounted on the PDU, and can be replacedseparately after t

PDU Fuse The MS462XX contains three fuses, two internal and one external. The exter-nal, rear-panel-mounted fuse is rated at 5A, 250V, F (quick acting

1-2 MS462XX MMFigure 1-1. MS462XX Vector Network Measurement System

7-4 CPU ASSEMBLY The CPU assembly is the topmost assembly in the cabinet and is securedby four screws through the rear panel. The front panel must be

With the CPU assembly removed from the system, the following subassem-blies can be removed and replaced:REMOVAL AND REPLACEMENT CPU ASSEMBLYMS462XX MM

System FirmwarePROMThe system operating firmware is stored in the System Firmware PROM(U75). The PROM may be changed to update or repair the system fi

CPU Heatsink withFanThe system CPU is protected by a thermal heat sink and fan combination.The heatsink with fan may be replaced as necessary.Tools Re

8. If the instrument is fitted with Option 4X, press the Appl key and se-lect:CHANGE APPLICATION SETUPMEASUREMENT TYPE TRANSMISSION AND REFLECTIONNOIS

16. If the instrument is fitted with Option 4X, press the Appl key, select:CHANGE APPLICATION SETUPMEASUREMENT TYPE TRANSMISSION AND REFLECTIONNOISE F

7-5 RECEIVER MODULEASSEMBLYThe receiver assembly is the bottom assembly in the cabinet and is se-cured by two screws through the rear panel. The front

5. Carefully pull the receiver module straight out from the front of theinstrument (Figure 7-12).Replacement is the opposite of removal.NOTEIndividual

7-6 TEST PORTCONNECTOR ANDPORT MODULEThe following procedure describes the proper steps to remove and installthe Test Port Connector and Port Module.T

7. Use the 5/16” torque wrench to tighten the connection between theTest Port connector and the Port Module to 8 in-lb.8. Tighten the Port Module moun

Chapter 1General Information1-1 SCOPE OF THISMANUALThis manual provides general information, performance verification, cali-bration, theory, and servi

7-22 MS462XX MMOPTION AND SOURCE MODULES REMOVAL AND REPLACEMENTFigure 7-13. Option and Source Module Mounting ScrewsOPTION AND SOURCEMODULE MOUNTINGS

7-8 BACKPLANE PCBASSEMBLYThe backplane PCB assembly is mounted to the rear panel of the cabinetand is secured by 18 screws. The PCB is protected by th

5. Remove the backplane PCB mounting screws (Figure 7-16).Replacement is the opposite of removal.7-24 MS462XX MMBACKPLANE PCB ASSEMBLY REMOVAL AND REP

Table of ContentsA-1 INTRODUCTION ...A-3A-2 CONNECTOR CARE AND HANDLING ...A-3Beware of Destructiv

Appendix AConnector Care and HandlingA-1 INTRODUCTION This appendix provides information on the proper care and handling ofRF sensor connectors.A-2 CO

If the measured connector is out of tolerance in the “+” region of the outerscale, the center pin is too long (see Table A-1). Mating under this condi

CleaningConnectorsThe precise geometry that makes the RF component's high performancepossible can be easily disturbed by dirt and other contamina

Appendix BPerformance SpecificationsClick here for the Anritsu documents web page.

1-5 OPTIONS The following options are easily added to the MS462XX platform for in-creased measurement capabilities:Option Number Description Availabil

Subject Index#10 MHzcalibration ...5-4to5-7clock distribution ...2-1437SF50 phase harmonic standards check ...3-36AADC clock

DDDS reference clock ...2-6descriptionsALC circuitry ...2-8auto-reversing module ...2-15bounding circuitry ...

VRAM troubleshooting...6-7Hhardware troubleshooting...6-8to6-22harmonic generator mode ...2-9harmonic output check...

pin depthdefinition ...A-4destructive mating...A-3gauge ...A-3test port specifications...A-4

test equipmentfor calibration...5-4recommended for service ...1-7to1-9test port connectorconfigurations ...2-15remov

1-8 SPARE PARTSLISTINGThe assemblies and spare parts listed in Table 1-1 through Table 1-3 areavailable for the MS462XX Vector Network Measurement Sys

1-6 MS462XX MMSPARE PARTS LISTING GENERAL INFORMATIONDescription Part NumberAutoReverse Module (9 GHz units) 54530AutoReverse Module (3 and 6 GHz unit

1-9 ASSEMBLYEXCHANGEPROGRAMAnritsu maintains an exchange assembly program for selected MS462XXsubassemblies and RF components. If a malfunction occurs

Instrument Critical SpecificationsRecommendedManufacturer or ModelApplicationCodeComputer orControllerPersonal Computer:Pentium class proces-sor, Win

Instrument Critical SpecificationsRecommendedManufacturer or ModelApplicationCodePower Meterand SensorPower Meter:Power Range –70 to+20 dBmGPIB contro

1-12 CONVENTIONS Throughout this manual, path names may be used to represent the key-strokes for a desired action or procedure. The path name begins w

1-13 COMPONENTHANDLINGThe MS462XX series contains components that can be damaged by staticelectricity. The following figures illustrate the precaution

7. Handle PCBs only by their edges. Donot handle by the edge connectors.8. Lift & handle solid state devices bytheir bodies—never by their leads.9

1-14 SERVICECENTERSGENERAL INFORMATION SERVICE CENTERSMS462XX MM 1-13/1-14UNITED STATESANRITSU COMPANY490 Jarvis DriveMorgan Hill, CA 95037-2809Teleph

MS462XXVECTOR NETWORK MEASUREMENT SYSTEMMAINTENANCE MANUALP/N: 10410-00205REVISION: HPRINTED: JULY 2004COPYRIGHT 2004 ANRITSU CO.490 JARVIS DRIVE · MO

Table of Contents2-1 INTRODUCTION ...2-32-2 SYSTEM OVERVIEW ...2-32-3 SOURCE MODULE ...

2-5 FRONT END RF COMPONENTS...2-15Test Port Connectors ...2-15Switched Frequency Doubler Module ...

Chapter 2Theory of Operation2-1 INTRODUCTION This chapter provides a brief overview of the functional assemblies andmajor parts that comprise a typica

A front panel keypad, rotary knob, and IBM compatible keyboard inter-face provide user interaction with the MS462XX Central Processor Mod-ule. The sys

The internal ALC level loop allows for a leveled range of –11 dBm to+20 dBm out of the Source RF port.The Local Oscillator is not used on the optional

The loop amplifier has a gain of 4; therefore, the sensitivity at the PLL ICoutput is very high. Thus, any noise injected at this point has noticeable

Speed-Up Circuitry In addition to the phase-lock and bounding circuitry, there is also cir-cuitry to help speed the locking of the loop. The settling

ALC Circuitry The source side differs from the LO side primarily in its ability to havecontrollable output power. The feedback from a level detector c

To make accurate measurements, the IF must be settled beforethe Digital Signal Processing (DSP) is triggered. When operat-ing in common offset mode, t

WARRANTYThe Anritsu product(s) listed on the title page is (are) warranted against defects in materials andworkmanship for three years from the date o

2-4 RECEIVER MODULE The Receiver module is made up of the RF components that are used toconfigure the system for the various options. This encompases

Test ChannelIntermediateFrequency PathThe purpose of the Test Channel I.F. circuitry is to amplify, filter, andsample the test channel signal after it

aliased signal. Amplification and bandpass anti-alias filtering on the453.125 kHz signal occurs on the options board.The other signal that comes from

Sampling of theIntermediateFrequencyAt the end of the test and reference Intermediate Frequency chains is an18 bit ADC converter. Although this conver

ADC ClockGeneration/ DSPCommunicationPort InterfaceThe ADC requires specific clock pulses to convert the signal, and it’s verysensitive to these pulse

2-5 FRONT END RFCOMPONENTSThe receiver demodulates the signals for processing by the CPU. VariousRF components are used to configure the different opt

The forward or reverse stimulus signals are sampled by the reference sig-nal sampling couplers and are then sent to a SP3T switch. In theMS462XB, the

Receiver ModuleConfigurations,MS462XAThe front end consists of the following items:qNon-Reversing ModuleqPort 1 Moduleq20 dB Fixed AttenuatorqPort 1 S

Two couplers on these two paths provide samples of the Forward or Re-verse signals that feed the Reference input of the Down Conversion Mod-ule.The st

Receiver ModuleConfigurations,MS462XDThe front end consists of the following items:qAuto-Reversing Modules (two each)qPort Modules (four each)qPort 1

In the Auto-Reversing Module 2, a coupler provides a signal path for thebuilt-in level detector that provides a DC signal for the ALC circuits lo-cate

In the Port 1 source path, the Port 1 Switch Module allows the injection ofthe Noise signal to the DUT via the Port 1 connector from an externalnoise

Current draw is minimal on the board (<100 mA at +5 volts, a few hun-dred mA on ±12 volts) so three port regulators are used. A low dropoutregulato

FrequencyTranslating GroupDelay ReceiverThe main group delay receiver starts with a 10.7 MHz bandpass filter,which is the approximate carrier frequenc

After the filter-amplifier chain, the signal entersa0to30dBswitched at-tenuator for gain ranging prior to detection. A comparator tree is used tosuppl

2-7 CENTRALPROCESSORMODULEThe Central Processor Module (Figure 2-1, following page) contains mostof the digital functionality of the MS462XX, and cons

2-26 MS462XX MMRECEIVER MODULE BLOCK DIAGRAMS THEORY OF OPERATION24252213111098765 312TO FRONTPANEL BOARD(D43018)MAIN CPU:1 - MC68040 CPU2 - DRAM CONT

MS462XX MM 2-27THEORY OF OPERATION RECEIVER MODULEFigure 2-2. Model MS4622A, Option 7, Transmission/Reflection, Step Attenuator

2-28 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-3. Model MS4622A, Transmission/Reflection

MS462XX MM 2-29THEORY OF OPERATION RECEIVER MODULEFigure 2-4. Model MS4622B, Auto-Reversing

2-30 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-5. Model MS4622B, Auto-Reversing, 3-Port

MS462XX MM 2-31THEORY OF OPERATION RECEIVER MODULEFigure 2-6. Model MS4622B, Auto-Reversing, Option 4 Noise Figure

2-32 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-7. Model MS4622B, Auto-Reversing, Options 3A and 4

MS462XX MM 2-33THEORY OF OPERATION RECEIVER MODULEFigure 2-8. Model MS4622B, Auto-Reversing, Option 6, 3-Port

2-34 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-9.Model MS4623A/MS4624A, Transmission/Reflection, Step Attenuator, Option 7 * Refer to Figu

MS462XX MM 2-35THEORY OF OPERATION RECEIVER MODULEFigure 2-10.Model MS4623A/MS4624A, Transmission/Reflection * Refer to Figure 2-22 (page 2-47) for a

2-36 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-11.Model MS4623B/MS4624B, Auto-Reversing * Refer to Figure 2-22 (page 2-47) for a functiona

MS462XX MM 2-37THEORY OF OPERATION RECEIVER MODULEFigure 2-12.Model MS4623B/MS4624B, Auto-Reversing, Option 3B, 2ndInternal Source and 3rdTest Port *

2-38 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-13.Model MS4623B/MS4624B, Auto-Reversing, Option 4, Noise Figure * Refer to Figure 2-22 (pa

MS462XX MM 2-39THEORY OF OPERATION RECEIVER MODULEFigure 2-14.Model MS4623B/MS4624B, Auto-Reversing, Option 6, 3rdTest Port * Refer to Figure 2-22 (pa

Safety SymbolsTo prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Company uses thefollowing symbols to indicate s

2-40 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-15.Model MS4623B/MS4624B, Auto -Reversing, Options 3B and 4 * Refer to Figure 2-22 (page 2-

MS462XX MM 2-41THEORY OF OPERATION RECEIVER MODULEFigure 2-16. Model MS4622C, Direct Access Receiver

2-42 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-17. Model MS4622C, Option 3 Direct Access Receiver

MS462XX MM 2-43THEORY OF OPERATION RECEIVER MODULEFigure 2-18.Model MS4623C/MS4624C, Direct Access Receiver * Refer to Figure 2-22 (page 2-47) for a f

2-44 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-19.Model MS4623C/MS4624C, Option 3 Direct Access Receiver * Refer to Figure 2-22 (page 2-47

MS462XX MM 2-45THEORY OF OPERATION RECEIVER MODULEFigure 2-20. Model MS4622D 4-Port Receiver

2-46 MS462XX MMRECEIVER MODULE THEORY OF OPERATIONFigure 2-21.Model MS4623D/MS4624D 4-Port Receiver * Refer to Figure 2-22 (page 2-47) for a functiona

THEORY OF OPERATION RECEIVER MODULE BLOCK DIAGRAMSMS462XX MM 2-47/2-48Figure 2-22. Switched Tripler and 9 GHz Down Conversion Module Functional Block

Table of Contents3-1 INTRODUCTION ...3-33-2 CHECKING THE SERVICE LOG/SELF-TEST ...3-33-3 VERIFYING OUT

SAFETY-2 MS462XX MMWhen supplying AC power to this equipment, connect the accessory 3-pinpower cord to a 3-pin grounded power outlet. If a grounded 3-

Chapter 3Operational PerformanceTests3-1 INTRODUCTION The tests in this chapter provide a means of partially testing theMS462XX system for proper oper

2. Select:DIAGNOSTICSSERVICE LOGThe MS462XX will now display the contents of the service log. The dis-play consists of a header and an error listing.

3-3 VERIFYINGOUTPUT POWERACCURACYThese procedures use the Power ALC Verification built-in function of theMS462XX Basic Measurement Software. The Stand

7. Verify that the instrument passes this test.8. If the instrument is a MS462XB/C with Option 3 installed or aMS462XD, press the SELECT SOURCE soft k

3-4 NON-RATIOPARAMETER TEST(MS462XA/C/D)One of the most useful tests for troubleshooting RF component problemsin the Receiver Module is the non-ratio

6. Change the user defined ratio by selecting:CHANGE RATIOMOREb2 (Tb) as the numerator1 (UNITY) as the denominator7. Ensure thta the minimum level of

8. Measure all other non-ratio parameters shown in Table 3-1 by se-lecting the S-parameters S12, S33 or S44 and setting up the user de-fined ratios as

3-5 SYSTEM DYNAMICRANGE TEST(MS462XA/B/D)This section verifies that the VNMS has a dynamic range consistent withfactory specifications. A full 12-term

9. Ensure the correct test port connector types are selected. If not, se-lect the port connection displayed and choose the correct type fromthe list.1

Table of Contents, NarrativeChapter 1—General Service InformationThis chapter familiarizes the user with the basic MS462XX Vector Network Measurement

20. Press the Display key and select:GRAPH TYPELOG MAGNITUDERETURNSCALERESOLUTION21. Enter 10 and press the X1 key.22. Select REFERENCE VALUE and ente

31. Set up the calibration using all default parameters.32. Before measuring the Isolation Devices, press the Avg key and select10 averages and 10 Hz

3-6 SYSTEM DYNAMICRANGE TEST(MS462XC)This test verifies the System Dynamic Range of the test channels of thereceiver.Test Setup: Set up the equipment

8. Press the BEGIN CAL soft key to start calibration.9. After the Flat Test Port Power Cal is completed, disconnect thepower sensor from the untermina

3-7 COMPRESSIONLEVEL TEST(MS462XC)This test verifies the compression magnitude levels of the MS462XC Vec-tor Network Measurement System receiver.Test

8. Select the NEXT FREQUENCY soft key, then enter the following fre-quencies:qMS4622C—1 GHz, 2 GHz, and 3 GHzqMS4623C—1 GHz, 2 GHz, 4 GHz, and 6 GHzqM

25. Record the SOURCE 1 POWER setting in the corresponding space inTable 3-4 (page 3-23) for MS4622C, Table 3-5 (page 3-24) forMS4623C, or Table 3-6 (

3-8 RECEIVERMAGNITUDEDISPLAYLINEARITY TEST(MS462XC)This test verifies the magnitude linearity of the MS462XC receiver.Test Setup: Set up the equipment

15. Select:MARKER READOUT16. Use the soft key to turn on Marker 1. Then use the numeric data en-try key to change POINT to 25.17. Press the Marker key

24. Insert a BNC female to BNC female adapter between the two BNCmale ports, as shown in Figure 3-6.25. Press the Display key and select the TRACE MEM