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Agilent Technologies N5241A, Service Manual

The Agilent Technologies N5241A offers high-performance network analysis with a range of features for precision measurements. Ensure optimal functionality with the Service Manual available for free download from manualshive.com. Get the most out of your instrument with the comprehensive manual provided for easy access and usage.

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Contents

Service Guide N5242-90001

Contents-3

Noise Figure Adjustment (Available Only with Option 029 Installed)  . . . . . . . . . . . . . . .3-44

4

Troubleshooting

Information in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Chapter Four at-a-Glance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Conventions Used for Hardkeys, Softkeys, and Menu Items . . . . . . . . . . . . . . . . . . . . . . . .4-3

Operating the Analyzer With Covers Removed  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Protect Against Electrostatic Discharge (ESD)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Getting Started with Troubleshooting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4

Check the Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Troubleshooting Organization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Power Up Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

Power Supply Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Troubleshooting LCD Display Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

Front Panel Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

Front Panel Keypad and RPG Test  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
A3 Display Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15
Checking the A2 USB Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
A1 Front Panel Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

Rear Panel Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17

Checking the USB Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17
Checking the CONTROLLER Port  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17
LAN Troubleshooting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

Measurement System Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23

Before you begin—consider: Where do you see a problem?  . . . . . . . . . . . . . . . . . . . . . . . .4-23
Verifying the A, B, C, D, and R Traces (Standard S-Parameter Mode) . . . . . . . . . . . . . . .4-25
Where to Begin Troubleshooting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-27
Checking the Source Group  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29
Checking the Signal Separation Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-33
Checking the Receiver Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-37

Instrument Block Diagrams Sheet 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-41

Microwave PNA, N5241A/42A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-41

Instrument Block Diagrams Sheet 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43

Microwave PNA, N5241A/42A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43

5

Theory of Operation

Information in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Chapter Five at-a-Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Network Analyzer System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Functional Groups of the Network Analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Synthesized Source Group Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
A4, A13, and A11 13.5 GHz Synthesizer Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
A5 and A8 26.5 GHz Source Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
A21 Multiplier/Amplifier 26.5 Board (HMA26.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
A10 Frequency Reference Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
A19 Test Set Motherboard  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

Summary of Contents for N5241A

Page 1: ...Hz and N5242A 10 MHz 26 5 GHz Agilent Technologies 2 Port and 4 Port PNA X Microwave Network Analyzers Part Number N5242 90001 Printed in USA September 10 2009 Supersedes Print Date September 2 2009 A...

Page 2: ...ct Software is delivered and licensed as Commercial computer software as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as...

Page 3: ...iliarize yourself with each of the notes and its meaning before operating this instrument All pertinent safety notes for using this product are located in Chapter 1 Safety and Regulatory Information W...

Page 4: ...dia presentation and access the analyzer s Web page The Installation and Quick Start Guide helps you to quickly familiarize yourself with the analyzer Procedures are provided for installing configurin...

Page 5: ...urce 2 4 Option 025 Add Four Internal Pulse Generators 2 4 Option 029 Noise Figure Measurement Capability 2 4 Option 080 Frequency Offset Measurements 2 5 Option 082 Scalar Calibrated Converter Measur...

Page 6: ...ure 3 7 Performance Tests 3 7 Certificate of Calibration 3 8 ANSI NCSL Z540 1 1994 Verification 3 9 Non ANSI NCSL Z540 1 1994 Verification 3 10 Preliminary Checks 3 11 The Operator s Check 3 11 The Te...

Page 7: ...7 Checking the USB Ports 4 17 Checking the CONTROLLER Port 4 17 LAN Troubleshooting 4 18 Measurement System Troubleshooting 4 23 Before you begin consider Where do you see a problem 4 23 Verifying the...

Page 8: ...acement Sequence 6 3 Rebuilt Exchange Assemblies 6 4 Replaceable Parts Listings 6 5 Front Panel Assembly Front Side All Options 6 10 Front Panel Assembly Back Side All Options 6 12 Top Assemblies All...

Page 9: ...Replacement Procedures Information in This Chapter 7 2 Chapter Seven at a Glance 7 2 Personal Safety Warnings 7 3 Electrostatic Discharge ESD Protection 7 3 Removal and Replacement Procedures 7 4 Remo...

Page 10: ...ardkeys Softkeys and Menu Items 8 2 Error Terms 8 3 Using Error Terms as a Diagnostic Tool 8 3 Performing Measurement Calibration 8 4 Using Flowgraphs to Identify Error Terms 8 4 Accessing Error Terms...

Page 11: ...Service Guide N5242 90001 1 1 1 Safety and Regulatory Information...

Page 12: ...apter One at a Glance Section Title Summary of Content Start Page Safety Symbols Descriptions of CAUTION and WARNING symbols used throughout this manual Page 1 3 General Safety Considerations A list o...

Page 13: ...met General Safety Considerations Safety Earth Ground WARNING This is a Safety Class I product provided with a protective earthing ground incorporated in the power cord The mains plug shall only be in...

Page 14: ...of the product must not be restricted The ambient temperature outside the cabinet must be less than the maximum operating temperature of the instrument by 4 C for every 100 watts dissipated in the ca...

Page 15: ...o qualified personnel To prevent electrical shock do not remove covers WARNING The opening of covers or removal of parts may expose dangerous voltages Disconnect the instrument from all voltage source...

Page 16: ...nnections always wear a heel strap when working in an area with a conductive floor If you are uncertain about the conductivity of your floor wear a heel strap always ground yourself before you clean i...

Page 17: ...ine switch is ON This symbol indicates that the power line switch is in the STANDBY position This symbol indicates that the power line switch is in the OFF position This symbol is used to identify a t...

Page 18: ...CPU board assembly needs to be disposed of dispose of it in accordance with your country s requirements If required you may return the battery to Agilent Technologies for disposal Refer to Contacting...

Page 19: ...Service Guide N5242 90001 2 1 2 General Product Information...

Page 20: ...work analyzers Page 2 3 Analyzer Accessories Available A list of accessories available for the microwave network analyzers Page 2 11 Analyzer Upgrades Available A list of the upgrades available for th...

Page 21: ...re to set up and control pulsed RF measurements with point in pulse and pulse profile capability The software sets the coefficient of the analyzer s digital IF filters to null out unwanted spectral co...

Page 22: ...anel PULSE I O connector or one of the internal pulse generators provided with Option 025 can be used The N1966A pulse I O adapter is recommended if using an external pulse generator See Analyzer Acce...

Page 23: ...ption enables the additional firmware necessary to make both vector and scalar calibrated converter measurements by providing an intuitive and easy to use user interface for setting up mixer and conve...

Page 24: ...ombiner three mechanical switches Option 400 Standard 4 Port Configuration This is a 4 port network analyzer with an upper frequency limit of either 13 5 GHz N5241A or 26 5 GHz N5242A This is the stan...

Page 25: ...perform ISO 9001 commercial calibration of your analyzer Refer to Calibration Options on page 2 8 for a description of the commercial calibration Option 898 Built In Tests for Standards Compliant Cali...

Page 26: ...analyzer to the manufacturer s published specifications It includes a calibration label an ISO 17025 calibration certificate and the corresponding calibration data measurement uncertainties and guard...

Page 27: ...82 N5241A 42AU 082 Add Vector and Scalar Calibrated Converter Measurements Option 083 N5241A 42AU 083 Bias Tees and Source and Receiver Attenuators for 2 Port Models Option 200 to 219 N5241A 42AU 921...

Page 28: ...n PNA Series Microwave Network Analyzers Analyzer Upgrades Available N5241A 42A Add built in performance test software for standards compliant calibration perpetual license Option898 N5241A 42AU 898 T...

Page 29: ...ccessory is a 4 port USB hub for connecting additional USB peripheral devices and can be ordered as model number N4689A Pulse I O Adapter N1966A An adapter for connecting between the analyzer s rear p...

Page 30: ...n accurate measurement of the dynamic accuracy specification is not required the E4418A or E4419A can be used P A T Power sensor Freq 300 kHz to 3 0 GHz Range 30 to 20 dBm 8482A None P A T Power senso...

Page 31: ...n Kits 3 5 mm calibration kit Freq 10 MHz to 26 5 GHz 85052B 85052D P T V 3 5 mm verification kit Freq 10 MHz to 26 5 GHz 85053B None V Cables BNC cable 2 required 50 length 60 cm 8120 1839 None A 3 5...

Page 32: ...14 in lb setting N A N A T R T 20 TORX driver 2 4 N m 21 in lb setting N A N A T R 1 4 inch and 5 16 inch open end wrench Thin profile 8710 0510 N A A R 5 16 inch open end torque wrench metric equiva...

Page 33: ...ase contact your Agilent field engineer NOTE In any correspondence or telephone conversation refer to the Agilent product by its model number and full serial number With this information the Agilent r...

Page 34: ...2 16 Service Guide N5242 90001 General Product Information PNA Series Microwave Network Analyzers Agilent Support Services and Assistance N5241A 42A...

Page 35: ...Service Guide N5242 90001 3 1 3 Tests and Adjustments...

Page 36: ...s represents a softkey a key whose label is determined by the instrument firmware Menu Item This represents an item in a drop down or pop up menu Section Title Summary of Content Start Page Before You...

Page 37: ...e Maximum Power Output Test Source Power Linearity Test Frequency Accuracy Test Trace Noise Test Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Page 3 2...

Page 38: ...perature As the device dimensions change with temperature their electrical characteristics change as well It is necessary to keep the environmental levels within the following limits Temperature 23 C...

Page 39: ...e Store connectors or adapters loose Visual Inspection Do Inspect all connectors carefully Do Not Use a damaged connector ever Look for metal particles scratches and dents Connector Cleaning Do Try co...

Page 40: ...ng error corrected measurements using the same calibration kit and test cables used during the system verification routine System specifications are applicable only when the measurement system is used...

Page 41: ...and the uncertainties associated with measuring the same devices on the system being verified The difference between the factory measured data and the verification measured data must fall within the...

Page 42: ...nfirm the system specifications If the performance tests are used to confirm instrument specifications the certificate of calibration will apply to the PNA as an independent instrument The equipment a...

Page 43: ...to repair or adjust1 Refer to Figure 3 1 for test flow Print data at the completion of all the tests even if you are aware that the analyzer did not pass If there is a failure complete the verificatio...

Page 44: ...L Z540 1 1994 perform the preliminary checks and the performance tests while stopping to troubleshoot Refer to Figure 3 2 for test flow Troubleshoot and repair the first problem encountered without co...

Page 45: ...ort signal paths By performing the operator s check the following are determined attenuation ranges of all installed attenuators calibration of the receivers frequency response of the receivers phase...

Page 46: ...different for different PNA model numbers and installed options Some of the tests are performed only if the appropriate options are installed in the PNA Figure 3 3 Operator s Check Dialog Box If the O...

Page 47: ...ired but are recommended to verify the performance of the test port cable Cable Return Loss Check on page 3 14 Cable Insertion Loss Check on page 3 15 Cable Magnitude and Phase Stability Check on page...

Page 48: ...isplays the return loss of the cable 4 Press MARKER ANALYSIS then In the Marker Search dialog box in the Search Type box make sure Maximum is selected Click Execute and then click OK 5 The marker anno...

Page 49: ...te and then click OK 3 The displayed response is twice the actual loss To get the actual worst case insertion loss divide the value at the marker annotation by two Refer to the cable manual to see if...

Page 50: ...s 9 To normalize the data trace press MARKER ANALYSIS then then then then ENTRY 10 Slowly make a 180 degree bend in the middle of the cable and hold it in that position 11 For each trace press RESPONS...

Page 51: ...N5241A 42A Preliminary Checks Figure 3 6 Typical Cable Magnitude and Phase Stability Response If the Cable Magnitude and Phase Stability Check Fails 1 Clean the cable and devices and torque to specifi...

Page 52: ...y above the display Set the Scale Per Division for 0 5 dB Press ENTRY b Press The Reference Level box will appear directly above the display Set the Reference Level for 0 dB Press ENTRY 7 Disconnect a...

Page 53: ...heck connect the cable with the load attached to the respective port and repeat steps 2 through 11 Figure 3 7 Typical Cable Connector Repeatability Response If the Cable Connector Repeatability Check...

Page 54: ...ng verified You can determine your system measurement uncertainty limits by referring to the analyzer embedded on line help IMPORTANT Passing this system verification does not guarantee that the analy...

Page 55: ...talk The random errors include noise drift connector repeatability and test cable stability A complete description of system errors and how they affect measurements is provided in the analyzer s on li...

Page 56: ...h This is accomplished by measuring the devices in an Agilent verification kit The measurement of the devices in the verification kit has a traceable path because the factory system that measured the...

Page 57: ...ons For each verification device the analyzer reads a file from the verification disk and sequentially measures the magnitude and phase for all four S parameters IMPORTANT For system verification to p...

Page 58: ...n is performed with a non Agilent cable ensure that the cable meets or exceeds the specifications for the test cable specified in the previous table Equipment Used in the System Verification Procedure...

Page 59: ...2 on page 3 28 File Tabular Data Writes the tabular data to a text file in the C Program Files Agilent Network Analyzer Documents directory File Graphs Saves a screen image in PNG format in the C Prog...

Page 60: ...tion that you performed earlier 1 Disconnect and clean the device that failed the verification test 2 Reconnect the device making sure that all connections are torqued to the proper specifications 3 M...

Page 61: ...sults with Print Tabular Data selected in the Printer Output area of the System Verification dialog box At the top of the printed output is the name of the device the serial number of the device and t...

Page 62: ...tion dialog box The printed graphical results show the following the name of the device measured the serial number of the device the parameters measured Results of the measurements Labeled as A in Fig...

Page 63: ...cy Test Trace Noise Test Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Source Power Accuracy Test Function of the Test To confirm the accuracy of the s...

Page 64: ...ecification Tested Power Sweep Range and Power Level Linearity Equipment Used A test cable And a 20 dB attenuator if the analyzer does not have an internal step attenuator Description of the Test 1 Th...

Page 65: ...and then repeat this test Trace Noise Test Function of the Test To measure the stability of a signal in the internal source and receiver system of your analyzer Specification Tested Test Port Input Tr...

Page 66: ...wer sensor is disconnected and the signal source point is connected to the port to be tested 7 The absolute log magnitude value dBm for the reference receiver is read 8 The log magnitude ratioed measu...

Page 67: ...nnected and the cable is connected to the port to be tested 5 The absolute power level in dBm log magnitude is read Plog 6 The test cable is removed and loads are connected to both ports 7 The analyze...

Page 68: ...A test cable is attached to the first port and a calibration is performed at the end of the cable and at the second port The cable is moved to the second port and another calibration is performed Usi...

Page 69: ...source and the dynamic accuracy test set create power levels that are deltas from the reference power level of 20 dBm Each delta is measured two ways by the power sensor and by the analyzer s receive...

Page 70: ...e performed perform them in the order listed 10 MHz Frequency Reference Adjustment on page 3 37 IF Gain Adjustment on page 3 38 Synthesizer Bandwidth Adjustment on page 3 38 Source Adjustment on page...

Page 71: ...justment typically adjusts to within 0 01 ppm 1 Connect the equipment as shown in Figure 3 13 Connect a GPIB cable between the network analyzer and the frequency counter Figure 3 13 Equipment Setup fo...

Page 72: ...yzer Procedure 1 Press UTILITY then then then click IF Gain Adjustment 2 Follow the instructions and prompts as they are displayed Synthesizer Bandwidth Adjustment This adjusts the bandwidth of the 13...

Page 73: ...Source Adjustment Procedure 1 Connect the equipment as shown in Figure 3 14 Connect a GPIB cable between the network analyzer and the power meter Figure 3 14 Equipment Setup for the Source Adjustment...

Page 74: ...iver at Port 1 Data obtained during this adjustment are stored in the mxcalfile_pxx files on the hard disk drive The data are used in subsequent measurements If the hard disk drive is replaced these m...

Page 75: ...stments Figure 3 15 Equipment Setup 1 for the Receiver Adjustment 2 Press UTILITY then then then click Receiver Adjustment 3 Ensure the GPIB settings are correct 4 Follow the instructions and prompts...

Page 76: ...3 42 Service Guide N5242 90001 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5241A 42A Figure 3 17 Equipment Setup 3 for the Receiver Adjustment...

Page 77: ...r Procedure 1 Press UTILITY then then then click Receiver Characterization 2 Follow the instructions and prompts as they are displayed EE Default Adjustment This sets the EEPROM data to their default...

Page 78: ...se Figure Adjustment Procedure 1 Press UTILITY then then then click Noise Adjustment 2 On the PNA Noise Adjustment dialog box see Figure 3 18 leave all three adjustments selected in the Select Adjustm...

Page 79: ...e 3 18 PNA Noise Adjustment Dialog Box 3 Click Begin 4 As shown in Figure 3 19 connect an RF cable between the network analyzer test ports 1 and 2 Figure 3 19 Equipment Setup 1 for the Receiver Adjust...

Page 80: ...onnect an RF cable between the network analyzer test ports 1 and 2 2 When prompted disconnect the cable at port 2 and insert the ECal module between port 2 and the free end of the cable Connect the EC...

Page 81: ...Service Guide N5242 90001 4 1 4 Troubleshooting...

Page 82: ...wer Up Troubleshooting Power up problems Power supply problems LCD problems Bootup for the network analyzer interface Page 4 6 Front Panel Troubleshooting Problems occurring after the network analyzer...

Page 83: ...tic discharge follow all of the recommendations outlined in Electrostatic Discharge Protection on page 1 6 for all of the procedures in this chapter Assembly Replacement Sequence After identifying the...

Page 84: ...ear to be on go to Power Up Troubleshooting on page 4 6 3 Is the Windows operating system running If not refer to Operating System Recovery in Chapter 8 for instructions 4 If other equipment cables an...

Page 85: ...ation Follow the flowgraph in Figure 4 1 to help direct you to the correct section for troubleshooting the analyzer Figure 4 1 Troubleshooting Organization Flowchart Go to Power Up Troubleshooting on...

Page 86: ...he fans should be audible The display should flash and then show the hardware boot up sequence This process checks the RAM and communication with the hard disk drive These checks return an error messa...

Page 87: ...fer to Removing the Covers on page 7 6 for removal procedures To determine the location of the A15 midplane board refer to Top Assemblies All Options on page 6 14 CAUTION Do not operate the analyzer w...

Page 88: ...ed Failure to do so can result in personal injury or loss of life CAUTION Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer to overheat...

Page 89: ...uctions 1 Unplug the A19 test set motherboard ribbon cable from the A19 test set motherboard refer to Removing and Replacing the A19 Test Set Motherboard on page 7 26 1 Unplug the A19 test set motherb...

Page 90: ...the A17 CPU board refer to Removing and Replacing the A51 Hard Disk Drive HDDA on page 7 48 The minimum required assemblies to power up the analyzer are A16 power supply A15 midplane board A14 system...

Page 91: ...fer to Removing and Replacing the A14 System Motherboard on page 7 16 If only one or two fans are not functioning and the power supplies are within specifications suspect the A14 system motherboard or...

Page 92: ...is dim the A3 display assembly is defective Refer to Removing and Replacing the A1 A3 and Other Front Panel Subassemblies on page 7 10 If the display is dark not visible connect an external VGA monito...

Page 93: ...oubleshooting on page 4 6 Refer to the following sections to verify the operation of the noted assemblies Front Panel Keypad and RPG Test on this page A3 Display Test on page 4 15 Checking the A2 USB...

Page 94: ...Front Panel Interface Board and Keypad Assembly on page 7 10 If none of the keys are working correctly suspect a faulty A1 front panel interface board To replace the A1 front panel interface board re...

Page 95: ...ems on page 4 12 What Is a Damaged Pixel A pixel is a picture element that combines to create the image on the display A pixel is about the size of a small pin point A damaged pixel is pixel that has...

Page 96: ...7 CPU board The speaker produces the audio output from signals supplied by the A17 CPU board It routes key pad commands from the keypad to the A17 CPU board It routes display signals from the A17 CPU...

Page 97: ...USB device wait 15 seconds and then reconnect the device to the rear panel USB port If the USB device still does not work and has been verified to work elsewhere then the A17 CPU board is faulty Refe...

Page 98: ...e recognized by the analyzer and displayed Refer to the manual of the peripheral to read or change its address Troubleshooting Systems with Controllers Passing the preceding test indicates that the an...

Page 99: ...nalyzer is set properly and that it is unique If unsure how to check the IP address refer to the embedded help in the analyzer 2 Make sure the subnet mask is 0 0 0 0 If not note the current setting to...

Page 100: ...r each of four cycle attempts similar to that in step 5 Other software may behave somewhat differently but basically the same If the analyzer can talk to the network but the network can not talk to th...

Page 101: ...be set to off The crossover cable could be miswired One or both analyzers could be defective If possible eliminate the possibility of a defective analyzer by substitution of a known working unit Once...

Page 102: ...end of the cable c Connect the wire from pin 2 on one end of the cable to the wire from pin 6 on the other end of the cable d Connect the wire from pin 6 on one end of the cable to the wire from pin...

Page 103: ...ork analyzer s performance has degraded to an unacceptable level yet it continues to operate and displays no error messages For this type of failure performance tests must be conducted to isolate the...

Page 104: ...splay press UTILITY then then then If the information is incorrect for any of the pc boards contact Agilent Technologies Refer to Contacting Agilent on page 2 15 Error Messages SOURCE UNLEVELED The so...

Page 105: ...re approximately level Connect an Open or Short standard from a mechanical calibration kit to each test port use adapters if necessary Press UTILITY then then then For 2 port analyzer models traces A...

Page 106: ...or 4 Port Models If all traces are present and are similar to the traces in Figure 4 6 or Figure 4 7 then there are no major problems with the analyzer s measurement system There may however be a mino...

Page 107: ...A30 A31 and A32 test port couplers A19 test set motherboard the receiver group A33 reference mixer switch A42 A43 A44 and A45 35 dB receiver step attenuators optional A23 and A24 mixer bricks A12 SPAM...

Page 108: ...he entry is not present or if the icon to the left of the name is a yellow box containing an exclamation mark navigate the following directories and verify the presence of the following file C WINNT s...

Page 109: ...ctive covers are removed Energy available at many points may if contacted result in personal injury 4 With the covers off plug in the analyzer and turn on the power CAUTION Do not operate the analyzer...

Page 110: ...blem is either source group or in the signal separation group Continue with Checking the A10 50 MHz Reference Outputs to check the source group Checking the A10 50 MHz Reference Outputs 1 Refer to the...

Page 111: ...and observe the spectrum analyzer measurement The spectrum analyzer should measure a signal at 807 61 MHz 5 If the observed problem was frequency banded rather than broadband related set the analyzer...

Page 112: ...Checking the A10 50 MHz Reference Outputs replace the faulty synthesizer board Refer to Removing and Replacing the A4 A13 Boards on page 7 14 7 If the signal is present reconnect cables W1 and W2 and...

Page 113: ...ed for more than 30 minutes as this could cause the analyzer to overheat which could result in costly damage Checking the Output Power of the A B C and D Signals Using a power meter you can measure th...

Page 114: ...to the block diagrams at the end of this chapter and to any of the following that are appropriate Bottom Assemblies Standard 2 Port Configuration Option 200 on page 6 18 Bottom RF Cables Standard 2 P...

Page 115: ...ut of the bridge to be checked Options 200 and 400 Port 1 W11 of A25 Port 2 W23 of A28 Port 3 W15 of A26 Port 4 W19 or A27 Options 219 224 419 and 423 Port 1 W71 of A25 Port 2 W83 of A28 Port 3 W75 of...

Page 116: ...asure a signal at 800 MHz 4 If the 800 MHz signal is not present replace the source step attenuator Refer to Removing and Replacing the A34 A37 Source Attenuators the A38 A41 Bias Tees and the A42 A45...

Page 117: ...Bottom Assemblies 4 Port Option 419 including Option 029 on page 6 46 Bottom RF Cables 4 Port Option 419 without Option 029 Ports 1 and 2 on page 6 48 Bottom RF Cables 4 Port Option 419 without Optio...

Page 118: ...port models Receiver A W51 of A23 Receiver R1 W52 of A23 Receiver R2 W53 of A23 Receiver B W54 of A23 4 port models Receiver A W51 of A23 Receiver R1 W52 of A23 Receiver R2 W53 of A23 Receiver B W54 o...

Page 119: ...tenuators 1 Locate the appropriate semirigid cable at the output of the receiver step attenuator to be checked Options 219 224 419 and 423 Port 1 W88 of A34 Port 2 W94 of A37 Port 3 W90 of A35 Port 4...

Page 120: ...r to be tested on the A20 IF multiplexer board 3 Connect the spectrum analyzer to the open connector 4 The measured signal on the spectrum analyzer should be at 7 61 MHz 5 If the measured signal is pr...

Page 121: ...510 GHz 3 0 4 0 GHz 4 0 5 332 GHz J1207 B2 36 B2 13 B14 20 B2 23 29 30 B24 28 31 36 B21 23 29 30 B21 36 B21 36 10 to 10 dBm 0 5 1 0 GHz 2 X2 4 A11 13 5 GHz LO SYNTHESIZER 2 4 GHz B14 15 B2 13 B16 17 B...

Page 122: ...4 42 Service Guide N5242 90001 Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 1 N5241A 42A...

Page 123: ...32 B33 36 B20 28 B20 36 B20 36 B20 36 B20 36 X2 W2 A30 TEST PORT COUPLER A31 TEST PORT COUPLER A29 TEST PORT COUPLER A28 BRIDGE A27 BRIDGE A26 BRIDGE W19 W20 OPTION 400 W80 W81 W79 W82 OPTION 419 OR 4...

Page 124: ...4 44 Service Guide N5242 90001 Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 2 N5241A 42A...

Page 125: ...Service Guide N5242 90001 5 1 5 Theory of Operation...

Page 126: ...ce Section Title Summary of Content Start Page Network Analyzer System Operation A summary of the theory of operation for the analyzer A summary of the operation of the major functional groups of the...

Page 127: ...lied to the device under test DUT and then to the receiver group The LO signal is applied directly to the receiver group where it is mixed with the test and reference signals to produce IF signals for...

Page 128: ...be separated into major functional groups Each group consists of assemblies that perform a distinct function in the instrument Some of the assemblies are related to more than one group and all of the...

Page 129: ...h the LO signal in the receiver group to produce the 7 606 MHz or 2 535 MHz at frequencies below 53 MHz IF signal The incident signal output power is leveled by an internal automatic leveling control...

Page 130: ...ference signals to 7 606 MHz intermediate frequency IF signals for signal processing retaining both magnitude and phase characteristics The IF signals are converted to digital information by the digit...

Page 131: ...rd produces a constant phase locked reference signal of 50 MHz that is sent to the A4 A13 and A11 13 5 GHz synthesizer boards The A11 13 5 GHz synthesizer board produces an LO signal that is sent thro...

Page 132: ...5 8 Service Guide N5242 90001 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5241A 42A Figure 5 3 Source Group...

Page 133: ...761 1 000 to 1 500 1 000 to 1 500 17 1 1 50761 to 2 00761 1 50761 to 2 00761 1 500 to 2 000 1 500 to 2 000 18 1 2 00761 to 3 00761 2 00761 to 3 00761 2 000 to 3 000 2 000 to 3 000 19 1 3 00761 to 3 20...

Page 134: ...esizer board to produce the output frequencies listed in Table 5 2 The output of the A11 13 5 GHz synthesizer board the LO synthesizer is 7 606 MHz higher than the output of the A4 and A13 13 5 GHz sy...

Page 135: ...rolled crystal oscillator OCXO normally provides the frequency standard However if a 10 MHz external reference signal is detected at the 10 MHz EXT REF IN port on the rear panel it is used as the freq...

Page 136: ...of 13 multiplexed address and data lines three control lines and an open collector interrupt line Pin assignments are listed in Table 5 3 on page 5 13 Up to 16 test sets may be daisy chained on the b...

Page 137: ...nd latched data 7 GND 0 V ground reference 8 LAS TTL out active low address strobe 1 s min 9 11 AD4 AD2 TTL I O address and latched data 12 GND 0 V ground reference 13 Interrupt In TTL in low level 10...

Page 138: ...0 7 Out TTL out latched 13 20 Port B0 7 Out TTL out latched 21 24 Port C I O TTL I O latched 25 28 Port D I O TTL I O latched 29 Port C Status TTL out low input mode high output mode 30 Port D Status...

Page 139: ...ical resolution 1 MHz BW 4 AnalogOut2 Analog Output Voltage Programmable 10 V 100 mA out Nominally 0 ohms 2 44 mV typical resolution 1 MHz BW 5 ACOM System ground 6 GndSense Ground sense for Analog In...

Page 140: ...test set is included in the standard analyzer and allows you to measure devices with higher power and higher dynamic range limits than an analyzer without the configurable test set On 4 port models tw...

Page 141: ...THRU and CPLR ARM connects to SOURCE OUT While increasing forward S21 dynamic range the reverse S12 dynamic range is degraded by the same amount A25 A28 Bridges The source incident signals from the A...

Page 142: ...5 18 Service Guide N5242 90001 Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5241A 42A Figure 5 4 4 Port Signal Separation Group...

Page 143: ...Service Guide N5242 90001 5 19 PNA Series Microwave Network Analyzers Theory of Operation N5241A 42A Signal Separation Group Operation Figure 5 5 2 Port Signal Separation Group...

Page 144: ...ese attenuators are controlled by the A17 CPU board The bias tees are to provide DC biasing for the DUT A46 A49 Mechanical Switches and A50 Combiner Optional On 4 port models with Option 423 a mechani...

Page 145: ...rence mixer switch is placed in the R1 reference signal path allowing this reference signal to be switched in and out of the signal path when an external mixer is being used in test configuration An e...

Page 146: ...the IF signal out through the rear panel connectors for external use and routes external signals in through rear panel connectors to be included in the signal processing In this assembly on 4 port mo...

Page 147: ...ulse gate input C TTL 4 IFGateDin IF pulse gate input D TTL 5 IFGateRin IF pulse gate input R TTL 6 DCOM Digital ground 7 PulseSyncIn Pulse generator synchronization trigger input TTL 8 RFPulseModIn R...

Page 148: ...tected by the analog to digital converter ADC All input signals are sampled simultaneously by the ADCs where they are converted to digital form The ADC conversions are triggered by timing signals from...

Page 149: ...Service Guide N5242 90001 5 25 PNA Series Microwave Network Analyzers Theory of Operation N5241A 42A Receiver Group Operation Figure 5 6 4 Port Receiver Group...

Page 150: ...5 26 Service Guide N5242 90001 Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation N5241A 42A Figure 5 7 2 Port Receiver Group...

Page 151: ...4 port configuration is shown the 2 port configuration is very similar Refer to the detailed block diagrams at the end of Chapter 4 if necessary In this section the following assemblies are described...

Page 152: ...5 28 Service Guide N5242 90001 Theory of Operation PNA Series Microwave Network Analyzers Noise Measurement Group Operation Option 029 N5241A 42A Figure 5 8 Noise Measurement Group Option 029...

Page 153: ...peration output to the display math processing functions and communications between the analyzer and an external controller or peripherals A block diagram of the digital control functional group is sh...

Page 154: ...ervice Guide N5242 90001 Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation N5241A 42A Figure 5 9 Digital Processing and Digital Control...

Page 155: ...ignals received from the A17 CPU board A2 USB Board This board provides four universal serial bus USB jacks that are industry standard 4 pin connectors allowing multiple USB devices to be connected to...

Page 156: ...of the analyzer Some of the components include the central processing unit CPU memory EEPROM ROM RAM bus lines to other board assemblies and connections to the rear panel Some of the main components...

Page 157: ...osure of the A17 CPU board The full operating system and firmware for the network analyzer is stored on the A51 hard disk drive USB x4 Four universal serial bus USB jacks industry standard 4 pin conne...

Page 158: ...two normal input ranges of the autoranging line voltage input will damage the power supply In rare cases this damage has become a user safety concern If unstable power levels are expected the analyzer...

Page 159: ...Service Guide N5242 90001 6 1 6 Replaceable Parts...

Page 160: ...formation How to order a replaceable part from Agilent Technologies Page 6 3 Assembly Replacement Sequence The correct sequence for replacing a defective assembly Page 6 3 Rebuilt Exchange Assemblies...

Page 161: ...quantity required Contact Agilent Technologies for instructions on where to send the order Refer to Contacting Agilent on page 2 15 Assembly Replacement Sequence The following steps describe how to r...

Page 162: ...ired and tested assemblies are available on a trade in basis Exchange assemblies are offered for lower cost than a new assembly but meet all factory specifications required of a new assembly The defec...

Page 163: ...nt Panel Assembly Back Side All Options on page 6 12 A2 USB board A3 Display assembly A4 13 5 GHz synthesizer board Top Assemblies All Options on page 6 14 A5 26 5 GHz source board A6 Not used A7 Nois...

Page 164: ...ee A39 Port 3 bias tee A40 Port 4 bias tee A41 Port 2 bias tee A42 Port 1 receiver step attenuator A43 Port 3 receiver step attenuator A44 Port 4 receiver step attenuator A45 Port 2 receiver step atte...

Page 165: ...6 12 Top Assemblies All Options on page 6 14 Bottom Assemblies Standard 2 Port Configuration Option 200 on page 6 18 Bottom Assemblies 2 Port Option 219 including Option 029 on page 6 24 Bottom Assemb...

Page 166: ...om RF Cables 4 Port Option 419 with Option 029 Ports 3 and 4 on page 6 54 Bottom RF Cables 4 Port Option 423 without Option 029 Ports 1 and 2 on page 6 60 Bottom RF Cables 4 Port Option 423 with Optio...

Page 167: ...llaneous Parts All Options on page 6 76 External Hardware and Miscellaneous Parts All Options on page 6 78 Rear Panel Assembly All Options on page 6 80 Miscellaneous Service Tools on page 6 82 Documen...

Page 168: ...ts 5041 9174 2 Trim strip filler For analyzers without handles N5242 80005 1 Keypad overlay N5242 00012 1 Lower front dress panel 2 port N5242 00013 Lower front dress panel 4 port N5242 80001 1 Front...

Page 169: ...Service Guide N5242 90001 6 11 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 2 Front Panel Assembly Front Side All Options...

Page 170: ...s 2090 0930 1 Touch screen 10 4 inch 0515 0372 10 Machine screw M3 0 x 8 pan head 6 to attach display to front frame and 4 to attach USB board to front frame E6601 61028 1 Cable A3 front panel interfa...

Page 171: ...Service Guide N5242 90001 6 13 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 3 Front Panel Assembly Back Side All Options...

Page 172: ...supply A17 W1312 60068a a Replacing the older 1 6 GHz CPU board with this new 2 0 GHz CPU board requires ordering and installing a new A51 hard disk drive The 1 6 GHz CPU board is no longer available...

Page 173: ...Service Guide N5242 90001 6 15 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 4 Top Assemblies All Options...

Page 174: ...F N5242 60014 1 A20 IF multiplexer board P403 to A12 SPAM board J4 W62 F N5242 60015 1 A20 IF multiplexer board P603 to A12 SPAM board J5 W63 F N5242 60016 1 A20 IF multiplexer board P803 to A12 SPAM...

Page 175: ...Service Guide N5242 90001 6 17 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 5 Top Cables All Cables All Options...

Page 176: ...r rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 Qty Description A19 N5240 60043 1 Test set motherboard A20 N5240 60045 1 IF multiplexer board A21 5087 7711 1 LO Multipli...

Page 177: ...Service Guide N5242 90001 6 19 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 6 Bottom Assemblies Standard 2 Port Configuration Option 200...

Page 178: ...r switch W40 SR N5242 20049 1 REF 2 RCVR R2 IN to A23 mixer brick R2 W41 SR N5242 20110 1 A11 13 5 GHz synthesizer to A21 HMA26 5 W45 SR N5242 20093 1 A5 source 1 to W46 W46 SR N5242 20090 1 W46 to re...

Page 179: ...Service Guide N5242 90001 6 21 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 7 Bottom RF Cables Standard 2 Port Configuration Option 200...

Page 180: ...motherboard J3 to A33 reference mixer switch 3W N5242 60009 A19 test set motherboard J221 to port 1 LED board J1 10R N5242 60005 Rear panel PWR I O to A19 test set motherboard J301 16R N5242 60006 A19...

Page 181: ...uide N5242 90001 6 23 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 8 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Op...

Page 182: ...A23 5087 7308 5087 6308 1 Mixer brick A25 A28 5087 7315 2 Test port 1 bridge Test port 2 bridge A29 A32 5087 7710 2 Test port 1 coupler Test port 2 coupler A33 N5240 60048 1 Reference mixer switch A34...

Page 183: ...Service Guide N5242 90001 6 25 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 9 Bottom Assemblies 2 Port Option 219 including Option 029...

Page 184: ...N5242 60012 1 A20 IF multiplexer P3 to A12 SPAM J1 W60 F N5242 60013 1 A20 IF multiplexer P203 to A12 SPAM J2 W61 F N5242 60014 1 A20 IF multiplexer P403 to A12 SPAM J4 W62 F N5242 60015 1 A20 IF mul...

Page 185: ...Service Guide N5242 90001 6 27 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 10 Bottom RF Cables 2 Port Option 219 without Option 029...

Page 186: ...exer P801 W85 SR N5242 20045 1 Front panel Port 2 CPLR THRU to A41 port 2 bias tee W115 SR N5242 20113 1 A29 port 1 coupler to front panel Port 1 CPLR ARM W117 SR N5242 20114 1 A32 port 2 coupler to f...

Page 187: ...tion 219 with Option 029 W141 SR N5242 20129 1 A55 noise downconverter to A7 noise receiver board LO W142 F N5242 60041 1 A55 noise downconverter J4 to A7 noise receiver board J9 W143 SR N5242 20130 1...

Page 188: ...erboard J212 to A23 mixer brick 1 2W A19 test set motherboard J541 to A38 port 1 bias tee 3W N5242 60009 A19 test set motherboard J222 to port 2 LED board J1 2W A19 test set motherboard J544 to A41 po...

Page 189: ...Guide N5242 90001 6 31 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 12 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 219 including Op...

Page 190: ...idge Test port 2 bridge A29 A32 5087 7710 2 Test port 1 coupler Test port 2 coupler A33 N5240 60048 1 Reference mixer switch A34 A37 33321 60070 2 Test port 1 source attenuator Test port 2 source atte...

Page 191: ...Service Guide N5242 90001 6 33 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 13 Bottom Assemblies 2 Port Option 224 including Option 029...

Page 192: ...switch to front panel SRC 2 OUT 1 W68 SR N5242 20107 1 W7 to SRC 2 OUT 2 W70 SR N5242 20123 1 A21 HMA26 5 to A23 mixer brick W71 SR N5242 20005 1 A25 port 1 bridge to A34 port 1 source attenuator W72...

Page 193: ...bles 2 Port Option 224 without Option 029 W117 SR N5242 20114 1 A32 port 2 coupler to front panel Port 2 CPLR ARM W119 SR N5242 20115 1 A38 port 1 bias tee to A29 port 1 coupler W120 SR N5242 20108 1...

Page 194: ...1 Rear panel PORT 1 COMB ARM IN J9 to A50 combiner W100 SR N5242 20008 1 A50 combiner to A46 port 1 mechanical switch W101 SR N5242 20017 1 W5 to A47 SRC 2 mechanical switch W103 SR N5242 20081 1 A47...

Page 195: ...VR R2 IN to A23 mixer brick R2 W139 SR N5242 20131 1 A22 splitter to A55 noise downconverter W141 SR N5242 20129 1 A55 noise downconverter to A7 noise receiver board LO W142 F N5242 60041 1 A55 noise...

Page 196: ...tor 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 2W A19 test set motherboard J541 to A38 port 1 bias tee 3W N5242 60009 A19 test set motherboard J222 to port 2 LED board J1 2W A1...

Page 197: ...Guide N5242 90001 6 39 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 16 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 224 including Op...

Page 198: ...on page 6 4 Qty Description A19 N5240 60043 1 Test set motherboard A20 N5240 60045 1 IF multiplexer board A21 5087 7711 1 LO Multiplier amplifier 26 5 HMA26 5 A22 5087 7139 5087 6139 1 Splitter A23 A...

Page 199: ...Service Guide N5242 90001 6 41 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 17 Bottom Assemblies Standard 4 Port Configuration Option 400...

Page 200: ...1 A28 port 2 bridge to front panel REF 2 SOURCE OUT W30 SR E8356 20072 12 Front panel jumper W31 SR N5242 20056 1 Port 1 RCVR A IN to A23 mixer brick A W32 SR N5242 20058 1 Port 3 RCVR C IN to A24 mi...

Page 201: ...Parts Listings Figure 6 18 Bottom RF Cables Standard 4 Port Configuration Option 400 W62 F N5242 60015 1 A20 IF multiplexer P603 to A12 SPAM J5 W63 F N5242 60016 1 A20 IF multiplexer P803 to A12 SPAM...

Page 202: ...switch 3W N5242 60009 A19 test set motherboard J221 to ports 1 3 LED board J1 10R N5242 60005 Rear panel PWR I O to A19 test set motherboard J301 16R N5242 60006 A19 test set motherboard J212 to A23...

Page 203: ...uide N5242 90001 6 45 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 19 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration O...

Page 204: ...10 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A33 N5240 60048 1 Reference mixer switch A34 A35 A36 A37 33321 60070 4 Test port 1 source attenuator Test port 3 so...

Page 205: ...Service Guide N5242 90001 6 47 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 20 Bottom Assemblies 4 Port Option 419 including Option 029...

Page 206: ...rear panel EXT TSET DRIVE RF OUT J6 W47 SR N5242 20089 1 A23 mixer brick to EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W52 F N5242 60021 1 A23 mixer brick...

Page 207: ...vice Guide N5242 90001 6 49 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 21 Bottom RF Cables 4 Port Option 419 without Option 029 Ports 1 and...

Page 208: ...J4 W62 F N5242 60015 1 A20 IF multiplexer P603 to A12 SPAM J5 W63 F N5242 60016 1 A20 IF multiplexer P803 to A12 SPAM J6 W74 SR N5242 20022 1 A38 port 1 bias tee to A29 port 1 coupler W85 SR N5242 20...

Page 209: ...6 22 Bottom RF Cables 4 Port Option 419 with Option 029 Ports 1 and 2 W142 F N5242 60041 1 A55 noise downconverter J4 to A7 noise receiver board J9 W143 SR N5242 20130 1 A55 noise downconverter to A7...

Page 210: ...1 W56 F N5242 60019 1 A24 mixer brick R4 to A20 IF multiplexer P414 W57 F N5242 60020 1 A24 mixer brick R3 to A20 IF multiplexer P413 W58 F N5242 60023 1 A24 mixer brick C to A20 IF multiplexer P601 W...

Page 211: ...vice Guide N5242 90001 6 53 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 23 Bottom RF Cables 4 Port Option 419 without Option 029 Ports 3 and...

Page 212: ...ick R4 to A20 IF multiplexer P414 W57 F N5242 60020 1 A24 mixer brick R3 to A20 IF multiplexer P413 W58 F N5242 60023 1 A24 mixer brick C to A20 IF multiplexer P601 W59 F N5242 60012 1 A20 IF multiple...

Page 213: ...ervice Guide N5242 90001 6 55 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 24 Bottom RF Cables 4 Port Option 419 with Option 029 Ports 3 and...

Page 214: ...2W A19 test set motherboard J541 to A38 port 1 bias tee 2W A19 test set motherboard J542 to A39 port 3 bias tee 2W A19 test set motherboard J543 to A40 port 4 bias tee 3W N5242 60009 A19 test set mot...

Page 215: ...Guide N5242 90001 6 57 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 25 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 419 including Op...

Page 216: ...coupler A33 N5240 60048 1 Reference mixer switch A34 A35 A36 A37 33321 60070 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A...

Page 217: ...Service Guide N5242 90001 6 59 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 26 Bottom Assemblies 4 Port Option 423 including Option 029...

Page 218: ...M J1 W60 F N5242 60013 1 A20 IF multiplexer P203 to A12 SPAM J2 W61 F N5242 60014 1 A20 IF multiplexer P403 to A12 SPAM J4 W62 F N5242 60015 1 A20 IF multiplexer P603 to A12 SPAM J5 W63 F N5242 60016...

Page 219: ...vice Guide N5242 90001 6 61 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 27 Bottom RF Cables 4 Port Option 423 without Option 029 Ports 1 and...

Page 220: ...07 1 A46 port 1 mechanical switch to A25 port 1 bridge W97 SR N5242 20086 1 A46 port 1 mechanical switch to PORT 1 SW SRC OUT J11 W98 SR N5242 20087 1 Rear panel PORT 1 COMB THRU IN J10 to A50 combine...

Page 221: ...3 with Option 029 Ports 1 and 2 W141 SR N5242 20129 1 A55 noise downconverter to A7 noise receiver board LO W142 F N5242 60041 1 A55 noise downconverter J4 to A7 noise receiver board J9 W143 SR N5242...

Page 222: ...r P403 to A12 SPAM J4 W62 F N5242 60015 1 A20 IF multiplexer P603 to A12 SPAM J5 W63 F N5242 60016 1 A20 IF multiplexer P803 to A12 SPAM J6 W75 SR N5242 20005 1 A26 port 3 bridge to A35 port 3 source...

Page 223: ...vice Guide N5242 90001 6 65 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 29 Bottom RF Cables 4 Port Option 423 without Option 029 Ports 3 and...

Page 224: ...60015 1 A20 IF multiplexer P603 to A12 SPAM J5 W63 F N5242 60016 1 A20 IF multiplexer P803 to A12 SPAM J6 W75 SR N5242 20005 1 A26 port 3 bridge to A35 port 3 source attenuator W76 SR N5242 20029 1 A3...

Page 225: ...ervice Guide N5242 90001 6 67 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 30 Bottom RF Cables 4 Port Option 423 with Option 029 Ports 3 and...

Page 226: ...9 test set motherboard J541 to A38 port 1 bias tee 2W A19 test set motherboard J542 to A39 port 3 bias tee 2W A19 test set motherboard J543 to A40 port 4 bias tee 3W N5242 60009 A19 test set motherboa...

Page 227: ...Guide N5242 90001 6 69 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 31 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 423 including Op...

Page 228: ...5 to attach fan bracket to chassis 4 to attach power supply bracket to inner panels left side bracket and fan bracket and 3 to attach A14 system motherboard to the chassis Chassis Refer to Internal H...

Page 229: ...Service Guide N5242 90001 6 71 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 33 Top Hardware and Miscellaneous Parts Top View All Options...

Page 230: ...2 00007 1 Bracket For A34 A37 source attenuators A39 A41 bias tees and A42 A45 receiver attenuators 0515 0430 30 Machine screw M3 0 x 6 pan head 8 to attach bridge brackets to test set deck 12 to atta...

Page 231: ...Service Guide N5242 90001 6 73 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 34 Bottom Hardware and Miscellaneous Parts All Options Except 029...

Page 232: ...37 port 2 source attenuators and A42 port 1 and A45 port 2 receiver attenuators to their brackets 0515 0666 4 Machine screw M3 0 x 18 pan head To attach A52 port 1 and A53 port 2 switches to their bra...

Page 233: ...Service Guide N5242 90001 6 75 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 35 Bottom Hardware and Miscellaneous Parts Option 029...

Page 234: ...5242 00033 1 Right side inner bracket N5242 00001 1 Chassis 0515 0372 39 Machine screw M3 0 x 8 pan head 4 to attach midplane bracket to left and right side inner brackets 6 to attach front bracket to...

Page 235: ...Service Guide N5242 90001 6 77 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 36 Internal Hardware and Miscellaneous Parts All Options...

Page 236: ...screw M4 0 x 25 pan head To attach rear foot E4400 60026 2 Strap handle assembly Includes item 0515 0710 4 Machine screw M5 0 x 18 flat head To attach strap handle 5041 9183 4 Key lock for bottom foot...

Page 237: ...Service Guide N5242 90001 6 79 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 37 External Hardware and Miscellaneous Parts All Options...

Page 238: ...w M3 0 x 8 pan head Rear foot and screw Refer to External Hardware and Miscellaneous Parts All Options on page 6 78 6960 0149 1 Hole plug N5242 00010 1 Rear panel 2190 0034 2 Lock washer 0380 0644 2 J...

Page 239: ...Service Guide N5242 90001 6 81 PNA Series Microwave Network Analyzers Replaceable Parts N5241A 42A Replaceable Parts Listings Figure 6 38 Rear Panel Assembly All Options...

Page 240: ...reference only Must be printed from the Agilent Web site Refer to Printing Copies of Documentation from the Web on page iv N5242 90001 GPIB Cables GPIB Adapter GPIB cable 0 5 meter 1 6 feet 10833D GPI...

Page 241: ...Noise Figure Measurements for 2 port models Option 029 N5241A 42AU 924 Bias Tees and Source and Receiver Attenuators for 4 Port Models Option 400 to 419 N5241A 42AU 926 Combiner and Mechanical Switche...

Page 242: ...mount flange for use without front handles two included in 5063 9237 Front handle kit two handles and hardware Front handle two included in 5063 9230 Rack mount rail set N5241A 42A 1CM 5063 9217 5022...

Page 243: ...Service Guide N5242 90001 7 1 7 Repair and Replacement Procedures...

Page 244: ...personal safety Page 7 3 Electrostatic Discharge ESD Protection Information pertaining to ESD protection Page 7 3 Table of Removal and Replacement Procedures A table of removal and replacement proced...

Page 245: ...nds after disconnecting the plug before removing the covers WARNING The detachable power cord is the instrument disconnecting device It disconnects the mains circuits from the mains supply before othe...

Page 246: ...el display board USB board Display assembly Page 7 10 A4 A13 A11 A5 A8 A7 A10 A12 13 5 GHz synthesizer boards 26 5 GHz source boards Noise receiver board Frequency reference board Signal processing AD...

Page 247: ...onal Port 4 bias tee Optional Port 2 bias tee Optional Page 7 42 Page 7 44 A42 A43 A44 A45 Port 1 receiver step attenuator Optional Port 3 receiver step attenuator Optional Port 4 receiver step attenu...

Page 248: ...isconnect the power cord 2 Remove the strap handles item by loosening the screws item with a T 20 TORX driver on both ends until the handle is free of the analyzer 3 Remove the foot locks item from th...

Page 249: ...Service Guide N5242 90001 7 7 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing the Covers Figure 7 1 Outer and Inner Cover Removal...

Page 250: ...6 3 With a 5 16 inch torque wrench remove all the semirigid jumpers item from the front panel 4 With a T 10 TORX driver remove the 12 screws item from the sides of the frame CAUTION Before removing th...

Page 251: ...ervice Guide N5242 90001 7 9 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Front Panel Assembly Figure 7 2 Front Panel Assembly Removal...

Page 252: ...rews item from the USB board and unplug it from the A1 front panel interface board Removing the A1 Front Panel Interface Board and Keypad Assembly 1 Remove the A2 USB board as outlined above 2 Remove...

Page 253: ...item from the USB controller board 2 Remove two screws item and remove the USB controller board Removing the Power Switch Board and Power Button Keypad 1 Disconnect the power switch cable item from th...

Page 254: ...board cable item and power switch cable item 2 Remove six screws item from the A3 display assembly and remove the A3 display assembly from the front panel assembly 3 The touch screen can now be remove...

Page 255: ...be removed by disconnecting the LCD cable from the inverter board and then removing the four screws item that attach it to the LCD display hold down bracket item Note the location of the four spacers...

Page 256: ...m the analyzer c On the top side of the analyzer remove two screws item one at each end of the board from the source board to be removed d Lift the two extractors item one at each end of the board and...

Page 257: ...Guide N5242 90001 7 15 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A4 A13 Boards Figure 7 6 A4 A5 A7 A8 A10 A11 A12 and A13 Boards R...

Page 258: ...e 7 14 7 Remove the fan bracket and fans Refer to Removing and Replacing the Fans on page 7 62 8 Turn the analyzer over so that the bottom side is up and remove four screws item that secure the bottom...

Page 259: ...vice Guide N5242 90001 7 17 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A14 System Motherboard Figure 7 7 A14 System Motherboard Remo...

Page 260: ...disengage the A15 midplane board from the A14 system motherboard 7 Note the positions of the five rubber grommets item on the bottom three A15 midplane board alignment pins Remove these rubber gromme...

Page 261: ...Service Guide N5242 90001 7 19 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A15 Midplane Board Figure 7 8 A15 Midplane Board Removal...

Page 262: ...re 7 9 for this procedure 1 Disconnect the power cord 2 Remove the outer and inner covers Refer to Removing the Covers on page 7 6 3 Remove the three flat head screws item from the power supply bracke...

Page 263: ...e Guide N5242 90001 7 21 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A16 Power Supply Assembly Figure 7 9 A16 Power Supply Assembly R...

Page 264: ...the A17 CPU board assembly from the A15 midplane board 5 Slide the A17 CPU board assembly out the rear of the analyzer 6 If the older 1 6 GHz CPU board is being replaced with the new 2 0 GHz CPU board...

Page 265: ...ice Guide N5242 90001 7 23 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A17 CPU Board Assembly Figure 7 10 A17 CPU Board Assembly Remo...

Page 266: ...rs Refer to Removing the Covers on page 7 6 3 Remove the A16 power supply assembly Refer to Removing and Replacing the A16 Power Supply Assembly on page 7 20 4 Remove the A17 CPU board assembly Refer...

Page 267: ...Service Guide N5242 90001 7 25 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A18 GPIB Board Figure 7 11 A18 GPIB Board Removal...

Page 268: ...dware item from 11 rear panel BNC connectors When reinstalling use a 5 8 inch open end torque wrench set to 21 in lbs 6 Remove connector hardware item from the rear panel TEST SET I O connector When r...

Page 269: ...e Guide N5242 90001 7 27 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A19 Test Set Motherboard Figure 7 12 A19 Test Set Motherboard Re...

Page 270: ...gray flexible RF cables item from the A20 IF multiplexer board 7 Remove connector hardware item from five rear panel RF connectors 8 Remove connector hardware item from the rear panel PULSE I O conne...

Page 271: ...e Guide N5242 90001 7 29 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A20 IF Multiplexer Board Figure 7 13 A20 IF Multiplexer Board Re...

Page 272: ...Disconnect the power cord 2 Remove the outer cover Refer to Removing the Covers on page 7 6 3 Position the analyzer bottom side up 4 Disconnect the ribbon cable item from the A21 HMA26 5 assembly 5 D...

Page 273: ...Service Guide N5242 90001 7 31 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A21 HMA26 5 Figure 7 14 A21 HMA26 5 Removal...

Page 274: ...sembly However do not over bend the semirigid cables 1 Disconnect the power cord 2 Remove the outer cover Refer to Removing the Covers on page 7 6 3 Position the analyzer bottom side up 4 Disconnect c...

Page 275: ...Service Guide N5242 90001 7 33 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A22 Splitter Figure 7 15 A22 Splitter Removal...

Page 276: ...e ribbon cables item from each of the mixer bricks 7 Remove two screws item from each end of the mixer brick bracket 8 Move the disconnected semirigid cables out of the way and lift the mixer brick mo...

Page 277: ...moval procedure If replacing the A24 mixer brick remember to install the short circuit termination item removed from the old mixer brick onto the new mixer brick in the same location Torque all RF cab...

Page 278: ...outer cover Refer to Removing the Covers on page 7 6 3 Position the analyzer bottom side up 4 Disconnect three semirigid cables item from the bridge to be replaced 5 Remove two screws item from the mo...

Page 279: ...5242 90001 7 37 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacingthe A25 A28 Bridges and Bridge Mounting Brackets Figure 7 17 A25 through A28 B...

Page 280: ...p 4 On 4 port models it is necessary to remove the couplers in pairs ports 1 3 and 2 4 5 Disconnect two semirigid cables item from each coupler to be removed 6 Disconnect the wire harness item from th...

Page 281: ...e N5242 90001 7 39 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A29 A32 Test Port Couplers Figure 7 18 A29 through A32 Test Port Coupl...

Page 282: ...page 7 6 3 Position the analyzer bottom side up 4 Disconnect four semirigid cables item from the A33 reference mixer switch 5 Remove three screws item that secure the A33 reference mixer switch to the...

Page 283: ...Guide N5242 90001 7 41 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A33 Reference Mixer Switch Figure 7 19 A33 Reference Mixer Switch...

Page 284: ...eceiver attenuator pair the associated bias tee and the bracket to which they are attached must be removed as a complete assembly 6 Disconnect the ribbon cable item from the attenuators to be removed...

Page 285: ...icrowave Network Analyzers Repair and Replacement Procedures N5241A 42A RemovingandReplacingtheA34 A37SourceAttenuators theA38 A41BiasTees andtheA42 A45Receiver Attenuators Figure 7 20 Source and Rece...

Page 286: ...side up 5 On some 4 port models it may be necessary to remove the attenuator bracket to which the bias tee is attached to facilitate replacing the bias tee If this is the case refer to Removing and R...

Page 287: ...vice Guide N5242 90001 7 45 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A38 A41 Bias Tees Figure 7 21 A38 through A41 Bias Tees Remov...

Page 288: ...he bypass switches and the brackets to which they are attached must be removed as a complete assembly The A50 combiner is removed with the A46 bypass switch 5 Disconnect four semirigid cables item fro...

Page 289: ...47 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the A46 A49 Bypass Switches and the A50 Combiner Figure 7 22 A46 through A49 Bypass Switch...

Page 290: ...que Files from the Hard Disk If the user has loaded unique calibration kit information navigate to C Program Files Agilent Network Analyzer and copy USER_CALKITFILE to a USB flash memory drive Also co...

Page 291: ...242 90001 7 49 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removingand Replacing the A51 HardDisk Drive HDDA Figure 7 23 Hard Disk Drive Assembly Replacement 2...

Page 292: ...item at the CPU board and remove the top cover with the A51 hard disk drive attached from the A17 CPU board assembly 5 Remove four screws item that secure the A51 hard disk drive to the CPU board asse...

Page 293: ...242 90001 7 51 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removingand Replacing the A51 HardDisk Drive HDDA Figure 7 24 Hard Disk Drive Assembly Replacement 1...

Page 294: ...procedure Refer to Contacting Agilent on page 2 15 Entering Your Agilent Administrator Password The network analyzer must be powered up and operating for this procedure 1 On the Windows Desktop right...

Page 295: ...reviously saved onto a USB flash memory drive must now be installed onto the new HDD The network analyzer must be powered up and operating Post Repair Procedures 1 Adhere the new Certificate of Authen...

Page 296: ...ee and the bracket to which they are attached must be removed as a complete assembly 6 Disconnect the ribbon cables item from the attenuators to be removed 7 Disconnect the wire harness cable item for...

Page 297: ...rder of the removal procedure Be sure to install the bias tee bracket on the new switch and reinstall the bias tee once the bracket has been reinstalled in the analyzer Torque all cable connections to...

Page 298: ...moving the Covers on page 7 6 3 Remove the front panel assembly Refer to Removing and Replacing the Front Panel Assembly on page 7 8 4 Position the analyzer bottom side up 5 The A54 test port 2 bridge...

Page 299: ...eassembling the A54 A55 assembly lay the assemblies on a flat surface while installing and tightening the interconnecting cable adapter to ensure that these assemblies will be flush with the side fram...

Page 300: ...the A17 CPU Board Assembly on page 7 22 5 Remove all jumper cables item from the rear panel 6 Remove the short item and the 50 ohm load s item 7 Remove the connector hardware item from each of the fiv...

Page 301: ...Service Guide N5242 90001 7 59 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Rear Panel Figure 7 27 Rear Panel Removal...

Page 302: ...for this procedure CAUTION Be careful not to damage the center pins of the semirigid cables Some flexing of the cables is necessary to remove the assembly However do not over bend the semirigid cables...

Page 303: ...ice Guide N5242 90001 7 61 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Front Panel LED Boards Figure 7 28 Front Panel LED Boards Remo...

Page 304: ...Replacing the A16 Power Supply Assembly on page 7 20 5 Remove five screws item that attach the fan bracket to the chassis 6 Remove three screws item that attach the rear panel to the fan bracket 7 Rai...

Page 305: ...Service Guide N5242 90001 7 63 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Fans Figure 7 29 B1 Fan Removal...

Page 306: ...ct the power cord 2 Remove the outer and inner covers Refer to Removing the Covers on page 7 6 3 Remove the A17 CPU board Refer to Removing and Replacing the A17 CPU Board Assembly on page 7 22 4 Remo...

Page 307: ...e Guide N5242 90001 7 65 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Lithium Battery Figure 7 30 Lithium Battery Removal 2 0 GHz CPU...

Page 308: ...connect the hard disk drive cable item from the CPU board then remove the top cover with the hard disk drive attached from the A17 CPU board assembly 6 Remove the battery from the battery holder by li...

Page 309: ...e Guide N5242 90001 7 67 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5241A 42A Removing and Replacing the Lithium Battery Figure 7 31 Lithium Battery Removal 1 6 GHz CPU...

Page 310: ...Adjustment Receiver Characterization Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power Linearity Test The Operator s Check A5 26 5 GHz source board Sour...

Page 311: ...therboard Run Eeprom backup exe at directory C program file agilent network analyzer service Eeprom backup exe Save EEPROM backup Restore TSMB from EEPROM backup Reinstall the serial number Refer to I...

Page 312: ...Power Output Test Calibration Coefficients Test A42 A45 receiver step attenuators Source Adjustment Receiver Adjustment Source Maximum Power Output Test Calibration Coefficients Test A46 A49 mechanica...

Page 313: ...Service Guide N5242 90001 8 1 8 General Purpose Maintenance Procedures...

Page 314: ...able options that have been added to your analyzer repair lost or damaged option data install or change a serial number page 8 13 Firmware Upgrades How to check your analyzer s current firmware revisi...

Page 315: ...intervals weekly monthly and so forth you can compare current error terms to these records A stable system should generate repeatable error terms over long intervals for example six months Look for th...

Page 316: ...he recommendations outlined in Electrostatic Discharge Protection on page 1 6 when performing the following calibration 1 Connect a type N cable to Port 2 2 Perform a full 2 port calibration FULL SOLT...

Page 317: ...s N5241A 42A Error Terms Figure 8 2 Flowgraph of Two Port Error Terms where E error term 1st Subscript D Directivity S Source Match R Reflection Tracking X Crosstalk Isolation L Load Match T Transmiss...

Page 318: ...R Directivity MAT Forward Source Match and Reverse Load Match TRK Forward Reflection Tracking and Reverse Transmission Tracking For the case of a full 3 port calibration port 1 has three Match error t...

Page 319: ...Source Match and Reverse Load Match TRK Forward Reflection Tracking and Reverse Transmission Tracking For the case of a full 4 port calibration port 1 has four Match error terms S11 source match S12 l...

Page 320: ...ss the error terms from the front panel perform the following steps 1 Press RESPONSE then Verify that is ON If not press the softkey to toggle it ON The Cal Set Viewer toolbar appears directly above t...

Page 321: ...ands for Programmable Instruments SCPI For more information on GPIB and SCPI refer to the embedded help in the analyzer Type in keyword errors systematic in the index COM DCOM Access to Error Terms Yo...

Page 322: ...d Adjustments Figure 8 5 Error Term Dataa a The data in this table are uncorrected system performance The values apply over an environmental temperature range of 25 C 5 C with less than 1 C deviation...

Page 323: ...the match between all components from the source to the output port The measurements most affected by source match errors are reflection and transmission measurements of highly reflective DUTs Typical...

Page 324: ...rors affect transmission measurements primarily where the measured signal level is very low The measurements most affected by isolation error terms are DUTs with large insertion loss Since these terms...

Page 325: ...under HOW TO USE THIS CERTIFICATE to obtain license key s for the option s listed on the certificate See the important note below NOTE When upgrading from one model number to another a new option ent...

Page 326: ...er to Contacting Agilent on page 2 15 It is necessary to backup all installed software options if the frequency reference board is replaced To enable or remove an option 1 Start the option enable util...

Page 327: ...egin Repair The data is written from the gen lic file into the EEPROM If the hard disk drive is replaced a new gen lic file is automatically created when the Network Analyzer application starts by ret...

Page 328: ...from the Option Enable menu bar see Figure 8 6 on page 8 13 The current serial number is displayed If no serial number has previously been entered the word NONE will be displayed 2 VERY CAREFULLY typ...

Page 329: ...e Internet Downloading from the Internet If your network analyzer is connected to the Internet there are two methods available for checking the availability of and downloading new firmware Download di...

Page 330: ...covering from Hard Disk Drive Problems If you suspect that you have a hard disk drive problem go to the Hard Drive Recovery link on the Agilent PNA Series Service Support Home Page on the Internet The...

Page 331: ...yzer to produce accurate leveled source signals and receive clean test signals Storing Correction Constants After performing any adjustment listed on page 3 36 in this manual store the correction cons...

Page 332: ...8 20 Service Guide N5242 90001 General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Correction Constants N5241A 42A...

Page 333: ...nd mechanical switches Option 423 2 6 4 port configuration with extended power and bias tees Option 419 2 6 4 port standard configuration Option 400 2 6 551 option description of 2 6 897 option built...

Page 334: ...7 36 troubleshooting 4 35 A27 test port 4 bridge illustrated 6 41 6 47 6 59 part number 6 40 6 46 6 58 removal and replacement illustrated 7 37 procedure 7 36 troubleshooting 4 35 A28 test port 2 brid...

Page 335: ...procedure 7 42 troubleshooting 4 39 A45 test port 2 receiver step attenuator illustrated 6 25 6 33 6 47 6 59 operation 5 21 part number 6 24 6 32 6 46 6 58 removal and replacement illustrated 7 43 pro...

Page 336: ...unctional groups 5 4 digital control 5 6 digital processing 5 6 noise measurement group 5 6 power supply 5 6 receiver group 5 6 signal separation 5 6 synthesized source 5 5 internal performance test s...

Page 337: ...Option 400 replaceable RF cables illustrated 6 43 part numbers 6 42 replaceable ribbon cables illustrated 6 45 part numbers 6 44 replaceable ribbon wire harnesses illustrated 6 45 part numbers 6 44 b...

Page 338: ...part numbers 6 56 in bottom assembly Option 423 illustrated 6 69 part numbers 6 68 in top assembly all options illustrated 6 17 part numbers 6 16 calibrated measurements N port Option 551 2 6 calibra...

Page 339: ...9 default EE adjustment 3 43 description functional digital control group 5 6 digital processing group 5 6 noise measurement group 5 6 power supply group 5 6 receiver group 5 6 signal separation grou...

Page 340: ...5 11 part number 6 14 removal and replacement illustrated 7 15 procedure 7 14 troubleshooting 4 30 front frame illustrated 6 11 part number 6 10 front panel assembly removal and replacement illustrate...

Page 341: ...replacement illustrated 7 49 7 51 procedure 7 48 high dynamic range measurement configuration 5 17 HMA26 5 illustrated 6 19 6 25 6 33 6 41 6 47 6 59 operation 5 11 5 17 part number 6 18 6 24 6 32 6 4...

Page 342: ...ssembly illustrated 6 81 part numbers 6 80 magnitude check failure of 3 17 test port cables 3 16 maintenance cleaning 2 3 preventive effect on error terms 8 3 max output power and frequency range 5 5...

Page 343: ...4 Option 029 noise measurement capability block diagram 5 28 functional description of 5 6 5 27 Option 080 frequency offset mode 2 5 Option 082 scaler calibrated converter measurements 2 5 Option 083...

Page 344: ...assembly 6 72 in external analyzer 6 78 in internal analyzer 6 76 in rear panel assembly 6 80 in top assembly all options 6 70 kits rack mount 6 83 locating by reference designator 6 5 by type of par...

Page 345: ...output power accuracy 3 29 test port output power linearity 3 30 trace noise 3 31 verification ANSI NCSL Z540 1 1994 3 9 non ANSI NCSL Z540 1 1994 3 10 performance test software internal 3 29 phase st...

Page 346: ...oval and replacement illustrated 7 41 procedure 7 40 troubleshooting 4 39 reference receiver See R receiver regulatory information 1 7 removing assemblies See specific assembly options 8 14 parts See...

Page 347: ...ated 6 57 part numbers 6 56 in bottom assembly Option 423 illustrated 6 69 part numbers 6 68 replacement A1 front panel interface board illustrated 7 11 procedure 7 10 A10 frequency reference board il...

Page 348: ...e 6 3 battery illustrated 7 65 7 67 procedure 7 64 display cable illustrated 7 12 7 13 procedure 7 12 fan illustrated 7 63 procedure 7 62 fan bracket illustrated 7 63 procedure 7 62 front panel assemb...

Page 349: ...stment 3 39 calibration 3 39 functional group 5 4 maximum output power test 3 30 power accuracy test 3 29 power linearity test 3 30 source 1 board illustrated 6 15 part number 6 14 removal and replace...

Page 350: ...requency accuracy 3 31 source maximum power output 3 30 source power accuracy 3 29 test port maximum power output 3 30 test port power accuracy 3 29 receiver compression 3 32 source power linearity 3...

Page 351: ...ooting 4 35 test port 3 coupler illustrated 6 41 6 47 6 59 operation 5 17 part number 6 40 6 46 6 58 removal and replacement procedure 7 38 7 39 troubleshooting 4 35 test port 3 mechanical switch illu...

Page 352: ...upler 4 35 A3 display assembly 4 12 4 13 A30 test port 3 coupler 4 35 A31 test port 4 coupler 4 35 A32 test port 2 coupler 4 35 A33 reference mixer switch 4 39 A34 test port 1 source step attenuator 4...

Page 353: ...lacement illustrated 7 11 procedure 7 11 USB controller board front panel illustrated 6 13 part number 6 12 USB hub accessory 2 11 utility option enable 8 13 accessing 8 13 dialog box 8 13 V VCO volta...

Page 354: ...Index 22 Service Guide N5242 90001 Index...

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