Page 1 Service Guide N5230C Agilent Technologies 2-Port PNA-L Microwave Network Analyzer (10 MHz–20 GHz) (10 MHz–40 GHz) (10 MHz–50 GHz) Part Number N5230-90024 Printed in USA Print Date: January 15, 2014 Supersedes: September 18, 2013  Agilent Technologies, Inc. 2008-2014...
Page 2 Certification Agilent Technologies, Inc. certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies, Inc. further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.
Page 3: Service Guide N5230-90024
Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies, Inc. products. For information about these agreements and for other assistance, contact Agilent. Refer to “Contacting Agilent” on page 2-10. Safety and Regulatory Information The safety and regulatory information pertaining to this product is located in Chapter 1, “Safety and...
Page 4 Printing Copies of Documentation from the Web To print copies of documentation from the Web, download the PDF file from the Agilent web site: • Go to www.agilent.com. • Enter the document’s part number (located on the title page) in the Search box.
Page 5: Table Of Contents
Shipping Your Analyzer to Agilent for Service or Repair ....... .
Page 6 Performance Tests (Agilent N7840A Software Package) ........
Page 7 PNA Series Microwave Network Analyzer N5230C, Standard Test Set....... 4-41...
Page 8 Contents Chapter Six at-a-Glance ............... . 6-2 Ordering Information .
Page 9 Contents Removing and Replacing the Lithium Battery ............7-52 Post-Repair Procedures .
Page 10 Contents Contents-6 Service Guide N5230-90024...
Page 11: Safety And Regulatory Information
Safety and Regulatory Information Service Guide N5230-90024...
Page 12: Information In This Chapter
Safety and Regulatory Information PNA Series Microwave Network Analyzers Information in This Chapter N5230C Information in This Chapter This chapter provides safety information that will help protect you and your network analyzer. It also contains information that is required by various government regulatory agencies.
Page 13: Safety Symbols
PNA Series Microwave Network Analyzers Safety and Regulatory Information N5230C Safety Symbols Safety Symbols The following safety symbols are used throughout this manual. Familiarize yourself with each of the symbols and its meaning before operating this instrument. CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, could result in damage to or destruction of the instrument.
Page 14: Servicing
Safety and Regulatory Information PNA Series Microwave Network Analyzers General Safety Considerations N5230C 61010-1:2001 and 664 respectively. CAUTION Ventilation Requirements: When installing the product in a cabinet, the convection into and out 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...
Page 15 PNA Series Microwave Network Analyzers Safety and Regulatory Information N5230C General Safety Considerations WARNING For continued protection against fire hazard, replace line fuse only with same type and rating. The use of other fuses or material is prohibited. WARNING The detachable power cord is the instrument disconnecting device. It disconnects the mains circuits from the mains supply before other parts of the instrument.
Page 16: Electrostatic Discharge Protection
Safety and Regulatory Information PNA Series Microwave Network Analyzers Electrostatic Discharge Protection N5230C Electrostatic Discharge Protection Protection against electrostatic discharge (ESD) is essential while removing assemblies from or connecting cables to the network analyzer. Static electricity can build up on your body and can easily damage sensitive internal circuit elements when discharged.
Page 17: Regulatory Information
PNA Series Microwave Network Analyzers Safety and Regulatory Information N5230C Regulatory Information Regulatory Information This section contains information that is required by various government regulatory agencies. Service Guide N5230-90024...
Page 18: Instrument Markings
“Monitoring and Control instrumentation” product. Do not dispose in domestic household waste. To return unwanted products, contact your local Agilent office, or see http://www.agilent.com/environment/product/ for more information. This product complies with the China RoHS regulation. A paper is included with the shipment that has a Toxic Substance Table showing the hazardous substances in the product.
Page 19: Lithium Battery Disposal
If the battery on the A15 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 Agilent” on page 2-10 for assistance.
Page 20 Safety and Regulatory Information PNA Series Microwave Network Analyzers Regulatory Information N5230C 1-10 Service Guide N5230-90024...
Page 21: General Product Information
General Product Information Service Guide N5230-90024...
Page 22: Information In This Chapter
A list of service equipment that is required to Page 2-7 perform system verification, performance tests, adjustments, and troubleshooting. The Internet address (URL) for Agilent assistance. Service and support options available. Agilent Support, Services, and Page 2-10 Calibration options available.
Page 23: Maintenance
PNA Series Microwave Network Analyzers General Product Information N5230C Maintenance Maintenance WARNING To prevent electrical shock, disconnect the analyzer from the mains source before cleaning. Use a dry cloth or one slightly dampened with water to clean the external case parts.
Page 24: Option 010, Time Domain
Option 1CM provides a rack mount kit that contains a pair of flanges, rack mount rails, and the necessary hardware to mount the analyzer in an equipment rack with 482.6 mm (19 inches) horizontal spacing. Additional kits may be ordered from Agilent. Refer to “Rack Mount Kits and Handle Kits” on page 6-48 the part numbers.
Page 25: Option 1E1, Source Attenuators (Extended Power Range)
PNA Series Microwave Network Analyzers General Product Information N5230C Analyzer Options Available Option 1E1, Source Attenuators (Extended Power Range) This option is included in Options 225, 425, and 525. This option adds a 60-dB step attenuator in the signal path of each of the measurement ports. These step attenuators are used to adjust the power level (in 10 db steps) to the device under test (DUT) without changing the power in the reference path.
Page 26: Analyzer Accessories And Upgrades Available
N5230C Analyzer Accessories and Upgrades Available To see a list of the accessories and upgrades available for the network analyzers, including ordering information, refer to the Agilent PNA Family Microwave Network Analyzers Configuration Guide, available online at http://cp.literature.agilent.com/litweb/pdf/5990-7745EN.pdf Pulse I/O Adapter-N1966A An adapter for connecting between the analyzer’s rear-panel PULSE I/O connector and the coaxial inputs...
Page 27: Required Service Test Equipment
PNA Series Microwave Network Analyzers General Product Information N5230C Required Service Test Equipment Required Service Test Equipment Recommended Alternate Model or Part Model or Part Equipment Critical Specifications Number Number Test Instruments and Software Freq: 10 MHz to 10.5 GHz...
Page 28 General Product Information PNA Series Microwave Network Analyzers Required Service Test Equipment N5230C Recommended Alternate Model Critical Specifications Model or Part Equipment or Part Number Number Calibration and Verification Kits Type-N calibration kit 85054B 85054D (20 GHz models) DC to 18 GHz...
Page 29 PNA Series Microwave Network Analyzers General Product Information N5230C Required Service Test Equipment Recommended Alternate Model or Part Model Equipment Critical Specifications Number Number Tools Extender board E8356-60021 None T-8 TORX driver 0.6 N-m (5 in-lb) setting 0.5, 0.8, and 1.0 N-m...
Page 30: Agilent Support, Services, And Assistance
“Contacting Agilent” on page 2-10. If the warranty or calibration plan period has expired, these services are available on a per-incident basis. Visit this InfoLine web site or contact Agilent to obtain a quote. Contacting Agilent Assistance with test and measurements needs and information on finding a local Agilent office are available on the Web at: http://www.agilent.com/find/assist...
Page 31: Shipping Your Analyzer To Agilent For Service Or Repair
• Include a complete description of the service requested or of the failure and a description of any failed test and any error message. • Remove and retain the front handles and all rack mount hardware. The analyzer should be sent to Agilent in the same configuration as it was originally shipped.
Page 32 General Product Information PNA Series Microwave Network Analyzers Agilent Support, Services, and Assistance N5230C 2-12 Service Guide N5230-90024...
Page 33: Tests And Adjustments
Tests and Adjustments Service Guide N5230-90024...
Page 34: Information In This Chapter
• The adjustments allow you to tune your analyzer for maximum response. NOTE A description of the performance tests in the Agilent N7840A software package is included in this chapter. The Agilent N7840A software package must be purchased separately. Chapter Three at-a-Glance...
Page 35 N5230C Information in This Chapter Section Title Summary of Content Start Page Page 3-28 A brief summary of each performance test in the Agilent N7840A software package: • Source Maximum Power Output Test • Source Power Linearity Test Performance Tests (Agilent •...
Page 36: Before You Begin
Tests and Adjustments PNA Series Microwave Network Analyzers Before You Begin N5230C Before You Begin Before checking, verifying, or adjusting the analyzer, refer to the following paragraphs to: • make sure the operating environment is within its requirements • make sure that proper electrostatic discharge (ESD) protection is provided •...
Page 37: Review The Principles Of Connector Care
Prior to making connections to your analyzer, carefully review the information about inspecting, cleaning, and gaging connectors. Refer to the calibration kit documentation for detailed connector care information. For course numbers about additional connector care instruction, contact Agilent Technologies. Refer to “Contacting Agilent” on page 2-10.
Page 38: About System Verification And Performance Tests
System specifications are applicable only when the measurement system is used to make error-corrected measurements. The analyzer's system specifications are described in the Agilent PNA Series Network Analyzer Technical Specifications and also in the analyzer’s on-line help system in the section titled “Corrected System Performance”.
Page 39: Performance Tests
If you have a measurement application that does not use all of the measurement capabilities of the analyzer, you may ask your local Agilent Technologies service office to verify only a subset of the specifications. However, this “limited calibration” creates the possibility of making inaccurate measurements if you then use the analyzer in an application requiring additional capabilities.
Page 40: Ansi/Ncsl Z540-1-1994 Verification
Tests and Adjustments PNA Series Microwave Network Analyzers ANSI/NCSL Z540–1–1994 Verification N5230C ANSI/NCSL Z540–1–1994 Verification To meet the criteria for ANSI/NCSL Z540-1-1994, perform the preliminary checks and either system verification or performance tests without stopping to repair or adjust . Refer to Figure 3-1 for test flow.
Page 41: Non-Ansi/Ncsl Z540-1-1994 Verification
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Non-ANSI/NCSL Z540–1–1994 Verification Non-ANSI/NCSL Z540–1–1994 Verification For non-ANSI/NCSL Z540-1-1994, perform the preliminary checks and either the system verification or performance tests while stopping to troubleshoot. Refer to Figure 3-2 for test flow. Troubleshoot and repair the first problem encountered without continuing to other tests.
Page 42: Preliminary Checks
Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5230C Preliminary Checks Preliminary checks include the following: • “The Operator’s Check” on page 3-10 The operator’s check tests the network analyzer’s basic functionality of the source, switch, and receivers.
Page 43 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Preliminary Checks 4. If shorts and opens are not connected to all ports, you will be prompted to connect them as they are needed. 5. The result of the operator’s check will be shown as a PASS or FAIL next to each test (refer to Figure 3-3).
Page 44: The Test Port Cable Checks
Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5230C The Test Port Cable Checks A faulty test port cable can cause a failure in the verification test. The following checks are not required, but are recommended to verify the performance of the test port cable.
Page 45 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Preliminary Checks Cable Return Loss Check 1. Press Preset. 2. Perform a one-port calibration on Port 1, 1-Port Reflection. Refer to the embedded help in the analyzer if necessary. 3. Connect the test port cable to Port 1. Connect a broadband load to the other end of the cable. Tighten to the specified torque for the connector type.
Page 46 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5230C Cable Insertion Loss Check 1. With the test port cable still connected to Port 1, connect a short to the other end of the cable. 2. From the Marker menu, click Marker Search. In the Marker Search dialog box, in the Search Type box, select Minimum.
Page 47 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Preliminary Checks Cable Magnitude and Phase Stability Check 1. With the test port cable still connected to Port 1, connect a short to the other end of the cable. 2. Press Preset.
Page 48 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5230C 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 specification. Repeat the check.
Page 49 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Preliminary Checks Cable Connector Repeatability Check NOTE The connector repeatability measurement should be done at the test port as well as at the end of the test port cable. 1. With the test port cable still connected to Port 1, connect a broadband load to the other end of the cable.
Page 50 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5230C Figure 3-7 Typical Cable Connector Repeatability Response If the Cable Connector Repeatability Check Fails 1. Clean the cable and devices, and torque to specification. Repeat the check. 2. If the check still fails, the cable should be repaired or replaced.
Page 51: System Verification
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C System Verification System Verification System verification is used to verify system-level, error-corrected uncertainty limits for network analyzer measurements. The verification procedure is automated and is contained in the firmware of the analyzer.
Page 52: Measurement Uncertainty
Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5230C Measurement Uncertainty Measurement uncertainty is defined as the sum of: • the residual systematic (repeatable) errors, and • the random (non-repeatable) errors in the measurement system after calibration. The systematic errors are: •...
Page 53: Measurement Traceability
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...
Page 54: Performing System Verification
It is highly recommended that the test port cables to be regularly tested. If the system verification is performed with a non-Agilent cable, ensure that the cable meets or exceeds the specifications for the test cable specified in the above table, “Equipment Used in the System Verification...
Page 55 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C System Verification System Verification Procedure 1. Connect a cable to the analyzer as shown in Figure 3-9. If you desire printed test outputs, connect a printer to the analyzer. For the printer, ensure that the correct driver is loaded and the printer is defined as the default printer.
Page 56 PNA Series Microwave Network Analyzers System Verification N5230C 4. In the Calibration Kit box, select the calibration kit that is being used by clicking on it. The corresponding verification kit to use is selected for you and displayed in the Verification Kit box. Refer to Figure 3-10.
Page 57 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C System Verification If the System Fails the Verification Test IMPORTANT Inspect all connections. Do not remove the cable from the analyzer test port. This will invalidate the calibration that you performed earlier.
Page 58 Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5230C Interpreting the Verification Results Figure 3-13 shows an example of typical verification results with 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 the date tested.
Page 59 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C System Verification Figure 3-14 shows an example of typical verification results with Measurement Plots selected in the Printer Output area of the System Verification windows. The printed graphical results show the following: •...
Page 60: Performance Tests (Agilent N7840A Software Package)
N5230C Performance Tests (Agilent N7840A Software Package) The Agilent N7840A software package verifies the electrical performance of your N5230C PNA series microwave network analyzer. The software automatically configures your analyzer to execute the performance tests. The N7840A software package is not included with the analyzer; it must be ordered separately.
Page 61: Source Maximum Power Output Test
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Performance Tests (Agilent N7840A Software Package) Source Maximum Power Output Test Function of the Test: To confirm the maximum source output power of your network analyzer over its full frequency range.
Page 62: Frequency Accuracy Test
Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N7840A Software Package) N5230C Frequency Accuracy Test Function of the Test: To verify the frequency accuracy and range of the analyzer’s source output. Specification Tested: Test Port Output–CW Accuracy Equipment Used: A frequency counter, a test cable, and adapters.
Page 63: Receiver Compression Test
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Performance Tests (Agilent N7840A Software Package) Receiver Compression Test Function of the Test: To measure the compression at the analyzer’s specified maximum power level for the receivers. Specification Tested: Test Port Input–Maximum Test Port Input Level Equipment Used: The compression test set, a power meter, power sensors, two test cables, and a calibration kit.
Page 64 Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N7840A Software Package) N5230C Specification Tested: Test Port Input–Test Port Noise Floor Equipment Used: A power meter, power sensor, a calibration kit, and a test cable. Description of the Test: 1.
Page 65: Calibration Coefficients Test
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Performance Tests (Agilent N7840A Software Package) Calibration Coefficients Test Function of the Test: To verify the uncorrected calibration coefficients of your analyzer. The calibration coefficients are measured in forward and reverse direction. Refer to “Error Terms”...
Page 66: Dynamic Accuracy Test
Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N7840A Software Package) N5230C Dynamic Accuracy Test Function of the Test: To measure the relative power linearity of the analyzer’s receivers. Specification Tested: Test Port Input–Dynamic Accuracy Equipment Used: The dynamic accuracy test set, a power meter (E4418B or E4419B), power sensors, and two test cables.
Page 67: Adjustments
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Adjustments Adjustments These adjustments are firmware-driven tests that are used to fine-tune your analyzer. If multiple adjustments are to be performed, perform them in the order listed. • “10 MHz Frequency Reference Adjustment” on page 3-35 •...
Page 68: Ee Default Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5230C 4. Click Begin Adj, and then follow the instructions as they are displayed. EE Default Adjustment This sets the EEPROM data to their default values. Procedure Service Adjustments 1. Press UTILITY...
Page 69 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Adjustments 8. On the System menu, point to Service, Adjustments, and then click LO Power Adjust. 9. Ensure the GPIB settings are correct. 10. Click Begin Adj, and then follow the instructions as they are displayed.
Page 70: Source Calibration Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5230C Source Calibration Adjustment The source calibration is used to adjust your network analyzer for a flat source power across its full frequency range. There are differences between Port 1 and Port 2; therefore, a Port 2 adjustment is required.
Page 71: Receiver Calibration Adjustment
PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Adjustments Receiver Calibration Adjustment The receiver calibration is used to adjust the network analyzer receivers for a flat response across its full frequency range: 1. A power meter/sensor is connected to Port 1, as shown in...
Page 72 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5230C Figure 3-17 Setup 1 for the Receiver Calibration Adjustment 2. On the System menu, point to Service, Adjustments, and then click Receiver Calibration. 3. Ensure the GPIB settings are correct.
Page 73 PNA Series Microwave Network Analyzers Tests and Adjustments N5230C Adjustments Figure 3-19 Setup 3 for the Receiver Calibration Adjustment Service Guide N5230-90024 3-41...
Page 74 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5230C 3-42 Service Guide N5230-90024...
Page 75: Troubleshooting
Troubleshooting Service Guide N5230-90024...
Page 76: Information In This Chapter
Troubleshooting PNA Series Microwave Network Analyzers Information in This Chapter N5230C Information in This Chapter The information in this chapter helps you: • Identify the portion of the analyzer at fault. • Locate the specific troubleshooting procedure to identify the assembly or peripheral at fault.
Page 77: Protect Against Electrostatic Discharge (Esd)
PNA Series Microwave Network Analyzers Troubleshooting N5230C Protect Against Electrostatic Discharge (ESD) Protect Against Electrostatic Discharge (ESD) This is important. If not properly protected against, electrostatic discharge can seriously damage your analyzer, resulting in costly repair. CAUTION To reduce the chance of electrostatic discharge, follow all of the recommendations outlined “Electrostatic Discharge Protection”...
Page 78: Getting Started With Troubleshooting
Check the Basics A problem can often be solved by repeating the procedure you were following when the problem occurred. Before calling Agilent Technologies or returning the instrument for service, please perform the following checks: 1. Is there power at the mains receptacle? If not, correct this situation and proceed.
Page 79: Troubleshooting Organization
PNA Series Microwave Network Analyzers Troubleshooting N5230C Getting Started with Troubleshooting Troubleshooting Organization 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”...
Page 80: Power Up Troubleshooting
• If the line switch glows green and the fans are operating (audible), but the display remains dark, go to “Front Panel Troubleshooting” on page 4-12. • If the instrument appears to abort the network analyzer measurement interface process, contact Agilent. Refer to “Contacting Agilent” on page 2-10. Service Guide N5230-90024...
Page 81: Power Supply Check
PNA Series Microwave Network Analyzers Troubleshooting N5230C Power Up Troubleshooting Power Supply Check NOTE There are no fuses to replace within the power supply. If you determine that the power supply is the failed assembly, replace the power supply. A catastrophic failure in the power supply can be determined by observing the line switch: 1.
Page 82 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5230C Measure the Individual Voltage Supplies WARNING The instrument contains potentially hazardous voltages. Refer to the safety symbols provided on the instrument and in “General Safety Considerations” on page 1-3 before operating the unit with the cover removed.
Page 83 PNA Series Microwave Network Analyzers Troubleshooting N5230C Power Up Troubleshooting Table 4-1 Extender Board Measurement Points Measurement Signal Expected Level Approximate Location Description (Vdc) Resistance (W) Test Equipment Used +5V power supply +5.0 15.0 -15V power supply 12.7 k 5.0 -5V power supply 7.2 k...
Page 84 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5230C Boards and the Plenum Bracket” on page 7-16). 6. Remove the A8 multiplier board (refer to “Removing and Replacing the A5 through A10 Boards and the Plenum Bracket” on page 7-16).
Page 85 PNA Series Microwave Network Analyzers Troubleshooting N5230C Power Up Troubleshooting If the Fans Are Not Operating CAUTION The power supply may be in thermal shutdown if the instrument has been operating without the fans running. Allow the instrument to cool down before troubleshooting.
Page 86: Front Panel Troubleshooting
Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting N5230C Front Panel Troubleshooting The front panel assembly consists of the A1 keypad, the A2 display assembly, the A3 front panel interface board, the touchscreen and touchscreen controller board, the inverter board, and the USB board. The following tests verify the operation of the front panel assembly when the analyzer is in the measurement mode.
Page 87: Front Panel Keypad And Rpg Test
PNA Series Microwave Network Analyzers Troubleshooting N5230C Front Panel Troubleshooting Front Panel Keypad and RPG Test Test the front panel keypad by running the front panel test. To run the front panel test, perform the following: Service More Front Panel Test...
Page 88 Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting N5230C Checking the Front Panel Keys To check the front panel keys, push each key and compare the name in the Key Label box to the name physically labeled on the key cap. These names are also in Table 4-2 below.
Page 89: A2 Display Test
PNA Series Microwave Network Analyzers Troubleshooting N5230C Front Panel Troubleshooting Checking the RPG (Front Panel Knob) To check the RPG knob: 1. Press the UTILITY key. Preset 2. Rotate the knob and check for a fluid movement of numbers on the analyzer display.
Page 90: Checking The Usb Board
Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting N5230C Checking the USB Board To verify proper operation of the USB board: • Connect a known good USB device, such as a USB mouse, to a front panel USB port.
Page 91: Rear Panel Troubleshooting
PNA Series Microwave Network Analyzers Troubleshooting N5230C Rear Panel Troubleshooting Rear Panel Troubleshooting Each rear panel connector is associated with a hardware group in the analyzer. You can use the data at these rear panel connectors to help troubleshoot these hardware groups in addition to testing the connectors.
Page 92: Checking The Serial (Rs-232), Parallel (1284-C), Or Vga Port
Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5230C Checking the SERIAL (RS-232), PARALLEL (1284-C), or VGA Port To verify the proper operation of the SERIAL, PARALLEL, or VGA port: • Connect a known good serial, parallel, or VGA peripheral device.
Page 93: Lan Troubleshooting
PNA Series Microwave Network Analyzers Troubleshooting N5230C Rear Panel Troubleshooting Troubleshooting Systems with Controllers Passing the preceding test indicates that the analyzer's peripheral functions are operating normally. Therefore, if the analyzer has not been operating properly with an external controller, check the following: •...
Page 94 Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5230C for the results of a successful ping. 5. The analyzer attempts four cycles of communications with the indicated LAN device. • It displays the time it took to complete each cycle.
Page 95 PNA Series Microwave Network Analyzers Troubleshooting N5230C Rear Panel Troubleshooting Testing Between Two Analyzers The ability of the analyzer's LAN to function can be easily tested by connecting two analyzers together using a “crossover cable” (a short length of cable with an RJ-45 connector on each end).
Page 96 Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5230C Table 4-3 LAN Pin Definitions and Wire Color Codes Pin Number Color Pin Number Color 1 (transmit +) White/orange White/blue 2 (transmit ) 6 (receive ) Orange Green 3 (receive +)
Page 97: Measurement System Troubleshooting
Chapter 8 . This will help to isolate most problems. If additional tests are required, refer to “Performance Tests (Agilent N7840A Software Package)” on page 3-28. Hard Failure With a hard failure, the PNA does not perform well and displays one or more error messages. To diagnose and repair a hard failure: •...
Page 98 To view this EEPROM header information on the network analyzer display, select System, Service, Utilities, View EEPROM Headers in the network analyzer application Refer to Figure 4-6. If the information is incorrect for any of the pc boards, contact Agilent Technologies. Refer to “Contacting Agilent” on page 2-10.
Page 99 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Error Messages SOURCE UNLEVELED: The source ALC circuits on the A16 test set motherboard is running open-loop. Check the cable connections for W29, W30, and W31 between either the A17 or A19 MASS assembly and the A16 test set motherboard.
Page 100: Verifying The A, B, R1, And R2 Traces (Standard S-Parameter Mode)
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C Verifying the A, B, R1, and R2 Traces (Standard S-Parameter Mode) NOTE There is no way to view the frequency offset receiver response (Option 080). However, some standard S-parameter receiver trace information is helpful in troubleshooting the frequency offset section of the PNA.
Page 101: Where To Begin Troubleshooting
— Go to Chapter 3, “Tests and Adjustments” and perform all the tests in that section. — If a problem still exists, contact Agilent. Refer to “Contacting Agilent” on page 2-10. • If any of the traces are not present, are noisy or distorted, or are at an incorrect level, then there is a problem with the analyzer’s measurement system.
Page 102 Agilent Technologies DSP Driver #2 2. If the icon to the left of the name is a yellow box containing an exclamation mark (!), use Windows Explorer to verify the presence of the following file: C:\WINNT\system32\drivers\spampnp.sys.
Page 103: Checking The Source Group
PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Checking the Source Group Source Group Tests NOTE A defective test port switch can exhibit the same symptom as a faulty source. Therefore, if it is determined that the source is functioning properly, you are directed to “Checking the...
Page 104 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C the display. 4-30 Service Guide N5230-90024...
Page 105 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting A phase lock problem is due to either: • faulty RF signal generation (caused by the A10, A9, A8, A17, A18, or A19 board) • faulty LO signal generation (caused by the A10, A7 or A6 board)
Page 106 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C Checking the A7 Fractional-N Synthesizer Output, Band 3 Perform this procedure if you observe a problem in band 3 in all receivers. 1. Refer to the block diagram at the end of this chapter and to “Top Cables, All Options”...
Page 107 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Table 4-4 LO Path Frequencies Network Analyzer Expected A7 Expected A6 Network Analyzer Source Band Frequency Band of Problem Output Frequency Output Frequency Frequency Setting (GHz) (GHz) (GHz) (GHz) 10.5.00 to 12.500 11.500...
Page 108 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C Checking the A6 Multiplier Output, All Bands 1. Refer to the block diagram at the end of this chapter and to “Top Cables, All Options” on page 6-14. Locate the flexible cable W3, at the A6 multiplier board.
Page 109 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting 6. If the signal is present, leave the spectrum analyzer connected to A9J106 and continue with “Checking the A9 Fractional-N Synthesizer Output, Bands 4 through 30” on page 4-35. Checking the A9 Fractional-N Synthesizer Output, Bands 4 through 30 Perform this procedure if you observe a problem in bands 4 through 30 in all receivers.
Page 110: Checking The Signal Separation Group
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C Checking the Signal Separation Group Before checking the signal separation group, perform the following procedures: • “Getting Ready to Test” on page 4-29 Checking the Output Power of the A and B Signals Using a power meter, you can measure the outputs of the A and B signals from the front panel.
Page 111 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Checking Port 2 Power (B Signal) The object of this check is to verify the power of the B signal across the entire frequency range. Perform this test if there is an observed problem only with the channel B trace. The ten second sweep is slow enough to allow you to observe the output power on the power meter as the sweep occurs.
Page 112 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C • W9 for Port 2 of analyzers without Option 1E1 (no source attenuators) • W40 for Port 1 of analyzers with Option 1E1 (with source attenuators) • W41 for Port 2 of analyzers with Option 1E1 (with source attenuators) 2.
Page 113 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Checking the A18 MA 26.5 1. Locate semirigid cable W7 at the output of the A18 MA 26.5. 2. Using a 5/16-inch torque wrench, disconnect W7 at the MA 26.5.
Page 114: Checking The Receiver Group
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5230C Checking the Receiver Group Equipment Used for These Tests Model or Alternate Model or Part Equipment Type Part Number Number Spectrum analyzer 8565E 856xE a. Must be capable of measuring signals at 8.333 MHz and 41.667 MHz.
Page 115 PNA Series Microwave Network Analyzers Troubleshooting N5230C Measurement System Troubleshooting Service Guide N5230-90024 4-41...
Page 116 REAR PANEL FRONT PANEL N5230C PNA-L Overall Block Diagram INTERCONNECTS INTERCONNECTS 2- Port, 10 MHz to 20, 40, and 50 GHz KEYPAD DISPLAY PROBE Options 220, 420, and 520 CONNECTORS Service Guide: N5230-90024 PROBE POWER A5 SIGNAL PROCESSING DISPLAY INVERTER...
Page 117: Instrument Block Diagrams Sheet 1
PNA Series Microwave Network Analyzers Troubleshooting N5230C Instrument Block Diagrams Sheet 1 Service Guide N5230-90024 4-43...
Page 118 REAR PANEL FRONT PANEL N5230C PNA-L Overall Block Diagram INTERCONNECTS INTERCONNECTS 2-Port, 10 MHz to 20, 40, and 50 GHz Options 225, 425, and 525 KEYPAD DISPLAY PROBE CONNECTORS Service Guide: N5230-90024 PROBE DISPLAY INVERTER POWER A5 SIGNAL PROCESSING A20 MIXER BRICK...
Page 119: Theory Of Operation
Theory of Operation Service Guide N5230-90024...
Page 120: Information In This Chapter
Information in This Chapter N5230C Information in This Chapter This chapter provides a general description of the operating theory of the N5230C PNA series microwave network analyzer. • Theory of operation is explained to the assembly level only. • Component-level circuit theory is not provided.
Page 121: Network Analyzer System Operation
PNA Series Microwave Network Analyzers Theory of Operation N5230C Network Analyzer System Operation Network Analyzer System Operation The PNA series network analyzer generates a phase-locked incident signal and an LO signal from the internal synthesized source. By means of signal separation, the incident signal is divided into a reference signal and a test signal.
Page 122 Theory of Operation PNA Series Microwave Network Analyzers Network Analyzer System Operation N5230C Synthesized Source Group The built-in synthesized source generates a swept, stepped, or continuous wave (CW) signal in the frequency ranges as listed in Table 5-1. The source group provides two signals: an LO signal and an incident signal.
Page 123 PNA Series Microwave Network Analyzers Theory of Operation N5230C Network Analyzer System Operation information by the digital processing group. Refer to “Receiver Group Operation” on page 5-19. Digital Processor and Digital Control Group The digital processor and digital control group are divided into a front panel group and a data acquisition and processing group.
Page 124: Synthesized Source Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5230C Synthesized Source Group Operation The source group produces a stable output signal by phase locking a synthesized voltage-controlled oscillator (VCO). Refer to Table 5-2 on page 5-8 for the full frequency range of the source.
Page 125 PNA Series Microwave Network Analyzers Theory of Operation N5230C Synthesized Source Group Operation Figure 5-2 Source Group Service Guide N5230-90024...
Page 126 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5230C Table 5-2 Subsweep Frequencies Mix Brick A7 Frac-N A9 Frac-N A17/A19 L.O. Band Synthesizer Multiplier Synthesizer Multiplier MASS Harmonic Frequency (GHz) Frequency (GHz) Frequency (GHz) Frequency (GHz)
Page 127: Frequency Offset Operation (Option 080)
PNA Series Microwave Network Analyzers Theory of Operation N5230C Synthesized Source Group Operation Frequency Offset Operation (Option 080) Since the A7 and A9 fractional-N synthesizer boards each contain their own phase lock circuitry, they can be phase locked independently to different output frequencies. Normally the LO signal is automatically tuned to a frequency 250 kHz higher than that of the test signal to create the 250 kHz difference frequency (IF) in the A20 mixer brick.
Page 128: A19 Multiplier/Amplifier/Switch/Splitter 50 (Mass 50)
Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5230C and amplified again. Together, these signal paths create the full output frequency range of 10 MHz to 26.5 GHz that is sent to the A19 MASS 50 where it is further amplified, filtered, and multiplied and then split into test and reference signals.
Page 129: A16 Test Set Motherboard
PNA Series Microwave Network Analyzers Theory of Operation N5230C Synthesized Source Group Operation A16 Test Set Motherboard The A16 test set motherboard serves these functions: • to act as an interface between the A15 CPU board and the auxiliary rear panel interconnects.
Page 130 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5230C Table 5-3 TEST SET I/O Connector Pin Assignments DB-25 Female Connector Pin Numbers Name Function SEL0 TTL out, test set select bit 0, tied to 0 V...
Page 131 PNA Series Microwave Network Analyzers Theory of Operation N5230C Synthesized Source Group Operation Table 5-4 HANDLER I/O Connector Key Pin Assignments Rectangular 36-Pin Female Connector Pin Numbers Name Function 0 V, ground reference TTL in, negative pulse (1 s min) latches OUTPUT1-2 INPUT1 3–4...
Page 132 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5230C Table 5-5 AUX I/O Connector Pin Assignments DB-25 Male Connector Pin Numbers Name Function ACOM 0 V, ground reference for analog signals 2–3 Analog Out 2–1 -10 to +10 Vdc output, 10 mA max, Ro = 100 W...
Page 133: Signal Separation Group Operation
PNA Series Microwave Network Analyzers Theory of Operation N5230C Signal Separation Group Operation Signal Separation Group Operation The signal separation group divides the source incident signal into a reference path and a test path. Refer to Figure 5-3 on page 5-15.
Page 134: A17 Multiplier/Amplifier/Switch/Splitter 26.5 (Mass 26.5)
Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5230C A17 Multiplier/Amplifier/Switch/Splitter 26.5 (MASS 26.5) The A17 MASS 26.5 is used only in analyzers with a high-end frequency of 22.5 GHz or lower. After the source signal has been amplified, filtered, and multiplied, it is sent to the splitter where a portion of the signal is split off to provide the R1 and R2 channel reference signals.
Page 135 PNA Series Microwave Network Analyzers Theory of Operation N5230C Signal Separation Group Operation Normal Configurable Test Set Configuration The normal configurable test set configuration is shown in Figure 5-4. This configuration includes Option 014, configurable test set, and Option 1E1, source step attenuators. With this configuration and inclusion of an external amplifier and accessories, you can calibrate the analyzer and test devices at power levels up to +30 dBm.
Page 136 Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5230C High Dynamic Range Configurable Test Set Configuration With a few jumper changes, you can configure the active measurement configuration for higher dynamic range measurements. By swapping the front panel jumpers for one port, signal flow through the corresponding coupler is reversed, increasing the test signal sensitivity by 15 dB.
Page 137: Receiver Group Operation
PNA Series Microwave Network Analyzers Theory of Operation N5230C Receiver Group Operation Receiver Group Operation The receiver group measures and processes the input signals into digital information for processing and eventual display. Figure 5-6 on page 5-20 is a simplified block diagram of the receiver functional group.
Page 138 Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation N5230C Figure 5-6 Receiver Group 5-20 Service Guide N5230-90024...
Page 139: Digital Processing And Digital Control Group Operation
PNA Series Microwave Network Analyzers Theory of Operation N5230C Digital Processing and Digital Control Group Operation Digital Processing and Digital Control Group Operation The digital processor and control group provides digital control for the entire analyzer. It provides: • front panel operation, •...
Page 140 Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation N5230C Figure 5-7 Digital Processing and Digital Control Group 5-22 Service Guide N5230-90024...
Page 141: Front Panel Subgroup
PNA Series Microwave Network Analyzers Theory of Operation N5230C Digital Processing and Digital Control Group Operation Front Panel Subgroup The front panel subgroup contains the following assemblies: • A1 Keypad Assembly • A2 Display Assembly • A3 Front Panel Interface Board A1 Keypad Assembly The A1 keypad assembly provides user interface to the analyzer.
Page 142: Data Acquisition And Processing Subgroup
Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation N5230C Data Acquisition and Processing Subgroup The data acquisition and processing subgroup contain the following assemblies. See Figure 5-7 on page 5-22. • A5 SPAM Board (Digital Description) •...
Page 143 PNA Series Microwave Network Analyzers Theory of Operation N5230C Digital Processing and Digital Control Group Operation Parallel A 36-pin, mini-D, 1284-C connector that provides connection to printers or any other parallel port peripheral. A standard 8-pin, 10/100BaseT, Ethernet connection. It auto selects between the two data rates.
Page 144: Power Supply Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Power Supply Group Operation N5230C Power Supply Group Operation The A4 power supply assembly is a switching power supply operating at 103 kHz switching frequency. The input power ranges for the power supply are 90 to 132 Vac or 195 to 250 Vac. The power supply automatically senses the input voltage and switches between these two ranges.
Page 145: Replaceable Parts
Replaceable Parts Service Guide N5230-90024...
Page 146: Information In This Chapter
Information in This Chapter This chapter: • identifies the replaceable parts for the Agilent PNA series microwave network analyzer. • includes several tables and illustrations to assist you in identifying the correct part for your analyzer. • contains ordering information for new assemblies and rebuilt-exchange assemblies.
Page 147: Ordering Information
To order a part listed in the replaceable parts lists: • include the part number • indicate the quantity required • Contact Agilent Technologies for instructions on where to send the order. Refer to “Contacting Agilent” on page 2-10. To order a part that is not listed in the replaceable parts lists: •...
Page 148: Assembly Replacement Sequence
Replaceable Parts PNA Series Microwave Network Analyzers Assembly Replacement Sequence N5230C Assembly Replacement Sequence The following steps describe how to replace an assembly in the network analyzer. Step 1. Identify the faulty group. Begin with Chapter 4, “Troubleshooting.” Follow up with the appropriate troubleshooting chapter that identifies the faulty assembly.
Page 149: Rebuilt-Exchange Assemblies
PNA Series Microwave Network Analyzers Replaceable Parts N5230C Rebuilt-Exchange Assemblies Rebuilt-Exchange Assemblies Under the rebuilt-exchange assembly program: • Certain factory-repaired 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.
Page 150: Replaceable Parts Listings
Replaceable Parts Listings N5230C Replaceable Parts Listings This section contains the replacement part numbers and their descriptions for your Agilent PNA series microwave network analyzer. You can find the locations of replaceable parts in this section: listed • by reference designator in...
Page 151 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Table 6-2 Part Number Location by Type of Part Type of Part Location • “Front Panel Assembly, Back Side, All Options” on page 6-10 • “Top Assemblies, All Options” on page 6-12 •...
Page 152: Front Panel Assembly, Front Side, All Options
➅ 0515-4791 Machine screw, M3.0 x 4 flat head ➆ W1312-40017 Front knob N5230-80022 Nameplate, N5230C 10 MHz to 20 GHz ➇ N5230-80023 Nameplate, N5230C 10 MHz to 40 GHz N5230-80024 Nameplate, N5230C 10 MHz to 50 GHz ➁ ➄...
Page 153 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-2 Front Panel Assembly, Front Side, All Options Service Guide N5230-90024...
Page 154: Front Panel Assembly, Back Side, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Front Panel Assembly, Back Side, All Options Reference Designator Part Number Description N5230-40002 Keypad assembly N5230-60045 Display assembly (Includes the following parts; not separately orderable.) ➊ –LCD display, 8.4-inch, 1024 x 768 pixels ➋...
Page 155 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-3 Front Panel Assembly, Back Side, All Options Service Guide N5230-90024 6-11...
Page 156: Top Assemblies, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Top Assemblies, All Options Reference Designator Part Number Description 0950-4599 Power supply assembly E8356-60194 Signal processing ADC module (SPAM) board A6, A8 E8364-60182 Multiplier board A7, A9 E8364-60189 Fractional-N synthesizer board...
Page 157 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-4 Top Assemblies, All Options Service Guide N5230-90024 6-13...
Page 158: Top Cables, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Top Cables, All Options Reference Designator Type Part Number Description A7 fractional-N synthesizer board J106 to A6 multiplier board N5230-20041 A7 fractional-N synthesizer board J101 to A6 multiplier board...
Page 159 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-5 Top Cables, All Options Service Guide N5230-90024 6-15...
Page 160: Bottom Assemblies, Option 220
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Assemblies, Option 220 Reference Designator Part Number Description E8364-60181 Test set motherboard 5087-7281 MASS 26.5 5087-6281 5087-7830 Mixer brick 5087-6830 Was 5087-7277 Test port 1 bridge coupler 5087-7716 Test port 2 bridge coupler Hard disk drive.
Page 161 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-6 Bottom Assemblies, Option 220 Service Guide N5230-90024 6-17...
Page 162: Bottom Cables, Option 220
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Cables, Option 220 Reference Designator Type Part Number Description W3, W6 Refer to “Top Cables, All Options” on page 6-14. N5230-20117 A17 MASS 26.5 (A) to A21 test port 1 coupler thru N5230-20116 A17 MASS 26.5 (B) to A22 test port 2 coupler thru...
Page 163 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-7 Bottom Cables, Option 220 Service Guide N5230-90024 6-19...
Page 164: Bottom Assemblies, Option 225
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Assemblies, Option 225 Reference Designator Part Number Description E8364-60181 Test set motherboard 5087-7281 MASS 26.5 5087-6281 5087-7830 5087-6830 Mixer brick Was 5087-7277 Test port 1 coupler 5086-7968 Test port 2 coupler...
Page 165 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-8 Bottom Assemblies, Option 225 Service Guide N5230-90024 6-21...
Page 166: Bottom Cables, Option 225
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Cables, Option 225 Reference Designator Type Part Number Description W3, W6 Refer to “Top Cables, All Options” on page 6-14. W21-W24 Refer to “Top Cables, All Options” on page 6-14.
Page 167 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-9 Bottom Cables, Option 225 Service Guide N5230-90024 6-23...
Page 168: Bottom Assemblies, Options 420 And 520
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Assemblies, Options 420 and 520 Reference Designator Part Number Description E8364-60181 Test set motherboard 5087-7280 MA 26.5 5087-6280 5087-7278 MASS 50 5087-6278 5087-7279 Mixer brick 5087-6279 Test port 1 coupler...
Page 169 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-10 Bottom Assemblies, Options 420 and 520 Service Guide N5230-90024 6-25...
Page 170: Bottom Cables, Options 420 And 520
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Cables, Options 420 and 520 Reference Designator Type Part Number Description W3, W6 Refer to “Top Cables, All Options” on page 6-14. N5230-20033 A18 MA 26.5 to A19 MASS 50...
Page 171 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-11 Bottom Cables, Options 420 and 520 Service Guide N5230-90024 6-27...
Page 172: Bottom Assemblies, Options 425 And 525
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Assemblies, Options 425 and 525 Reference Designator Part Number Description E8364-60181 Test set motherboard 5087-7280 MA 26.5 5087-6280 5087-7278 MASS 50 5087-6278 5087-7279 Mixer brick 5087-6279 Test port 1 coupler...
Page 173 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-12 Bottom Assemblies, Options 425 and 525 Service Guide N5230-90024 6-29...
Page 174: Bottom Cables, Options 425 And 525
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Cables, Options 425 and 525 Reference Designator Type Part Number Description W3, W6 Refer to “Top Cables, All Options” on page 6-14. N5230-20033 A18 MA 26.5 to A19 MASS 50...
Page 175 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-13 Bottom Cables, Options 425 and 525 Service Guide N5230-90024 6-31...
Page 176: Top Hardware And Miscellaneous Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Top Hardware and Miscellaneous Parts, All Options Reference Designator Part Number Description Refer to “Internal Hardware and Miscellaneous Parts, All Options” on Fans page 6-36. ➀ 5022-6134 Cable hold down ➁...
Page 177 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-14 Top Hardware and Miscellaneous Parts, All Options Service Guide N5230-90024 6-33...
Page 178: Bottom Hardware And Miscellaneous Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Bottom Hardware and Miscellaneous Parts, All Options Reference Designator Part Number Description ➀ E8361-60059 USB hub board ➁ ➀ 0515-1934 Machine screw M2.5 x 6 (USB hub board ➆...
Page 179 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-15 Bottom Hardware and Miscellaneous Parts, All Options Service Guide N5230-90024 6-35...
Page 180: Internal Hardware And Miscellaneous Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Internal Hardware and Miscellaneous Parts, All Options Reference Part Number Description Designator 3160-1085 ➀ E8356-00027 Chassis assembly ➁ N5230-00001 Test set deck ➂ 5022-1087 Test port coupler nut ➃...
Page 181 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-16 Internal Hardware and Miscellaneous Parts, All Options Service Guide N5230-90024 6-37...
Page 182: External Hardware And Miscellaneous Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C External Hardware and Miscellaneous Parts, All Options Reference Designator Part Number Description ➀ E8356-00018 Inner cover ➁ N5230-00011 Outer cover ➂ 5041-9611 Rear feet ➃ 0515-1619 Machine screw M4.0 x 25, pan head ➄...
Page 183 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-17 External Hardware and Miscellaneous Parts, All Options Service Guide N5230-90024 6-39...
Page 184: Rear Panel Assembly, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Rear Panel Assembly, All Options Part Item Number Number Description ➀ ➁ ➆ Rear frame assembly (includes items E8364-60023 – ➁ E8356-00023 Cover plate, large ➂ 6960-0149 Hole plug ➃...
Page 185 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-18 Rear Panel Assembly, All Options Service Guide N5230-90024 6-41...
Page 186: Hard Disk Drive Assembly, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Hard Disk Drive Assembly, All Options Parallel ATA Interface Every PNA shipped prior to January 2009 contains the parallel ATA interface for the hard disk drive (HDD). Starting January 2009, every PNA shipped contains the serial ATA interface for the HDD. The table below lists the contents of the HDD with the parallel ATA interface.
Page 187 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-19. Hard Disk Drive Assembly (Parallel ATA Interface) Service Guide N5230-90024 6-43...
Page 188 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Serial ATA Interface Every PNA shipped prior to January 2009 contains the parallel ATA interface for the hard disk drive (HDD). Starting January 2009, every PNA shipped contains the serial ATA interface for the hard disk drive (HDD).
Page 189 PNA Series Microwave Network Analyzers Replaceable Parts N5230C Replaceable Parts Listings Figure 6-20 Hard Disk Drive Assembly (Serial ATA Interface) Service Guide N5230-90024 6-45...
Page 190: Miscellaneous Part Numbers
08513-20014 Documentation Installation and Quick Start Guide (for all PNA series analyzers) (Cannot be ordered. Part number is for reference only. Must be printed from the Agilent Web site. Refer to “Printing E8356-90001 Copies of Documentation from the Web” on page iv.)
Page 191 Time Domain N5230CU-010 (Option 010) Frequency Offset Mode N5230CU-080 (Option 080) Add built-in performance test software for Agilent inclusive calibration perpetual license N5230CU-897 (Option897) Add built-in performance test software for standards compliant calibration perpetual license N5230CU-898 (Option898) 20 GHz Standard Test Set to Configurable Test Set with Extended Power Range (serial prefix...
Page 192 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5230C Table 6-3 Part Numbers for Miscellaneous Parts and Accessories (Continued) Model or Part Description Number Keyboard (U.S. style) 1150-7896 Touch-up Paint Dove gray 6010-1146 (for use on frame around front panel and painted portion of handles)
Page 193: Repair And Replacement Procedures
Repair and Replacement Procedures Service Guide N5230-90024...
Page 194: Information In This Chapter
PNA Series Microwave Network Analyzers Information in This Chapter N5230C Information in This Chapter This chapter contains procedures for removing and replacing the major assemblies of your Agilent Technologies PNA series microwave network analyzer. Chapter Seven at-a-Glance Section Title Summary of Content...
Page 195: Personal Safety Warnings
PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Personal Safety Warnings Personal Safety Warnings WARNING These servicing instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing unless you are qualified to do so.
Page 196: Assembly Replacement Sequence
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Assembly Replacement Sequence N5230C Assembly Replacement Sequence The following steps show the sequence that you should follow to replace an assembly in the network analyzer. Step 1. Identify the faulty group. Begin with Chapter 4, “Troubleshooting.”...
Page 197: Removal And Replacement Procedures
PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removal and Replacement Procedures Removal and Replacement Procedures Table 7-1 List of Procedures Reference Designator Assembly Description Location USB hub (part of A16 test set motherboard procedure) Page 7-24 Covers, outer and inner...
Page 198: Removing The Covers
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing the Covers N5230C Removing the Covers Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) Removing the Outer Cover CAUTION This procedure is best performed with the analyzer resting on its front handles in the vertical position.
Page 199 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing the Covers Figure 7-1 Outer and Inner Cover Removal Service Guide N5230-90024...
Page 200: Removing And Replacing The Front Panel Assembly
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Front Panel Assembly N5230C Removing and Replacing the Front Panel Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 201 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the Front Panel Assembly Figure 7-2 Front Panel Assembly Removal Service Guide N5230-90024...
Page 202: Removing And Replacing Front Panel Subassemblies
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing Front Panel Subassemblies N5230C Removing and Replacing Front Panel Subassemblies Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 203 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing Front Panel Subassemblies Replacing the A2 Display Assembly 1. Remove the inverter board. Refer to the procedure on page 7-10. Remove the inverter cable from the ⑧...
Page 204 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing Front Panel Subassemblies N5230C Replacing the USB Connector Board ⑩ 1. Remove the two retaining screws (item ) from the USB connector board. 2. Carefully unplug the USB connector board from the A3 front panel interface board and remove it from the front panel assembly 3.
Page 205 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing Front Panel Subassemblies Replacing the Touch Screen Display Assembly 1. Refer to Figure 7-3 Figure 7-4 for this procedure. 2. Remove the A2 display assembly. Refer to the procedure on page 7-11.
Page 206: Removing And Replacing The A4 Power Supply Assembly
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A4 Power Supply Assembly N5230C Removing and Replacing the A4 Power Supply Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 207 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A4 Power Supply Assembly Figure 7-5 A4 Power Supply Assembly Removal Service Guide N5230-90024 7-15...
Page 208: Removing And Replacing The A5 Through A10 Boards And The Plenum Bracket
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A5 through A10 Boards and the Plenum Bracket N5230C Removing and Replacing the A5 through A10 Boards and the Plenum Bracket Tools Required • T-10 TORX driver (set to 9 in-lb) •...
Page 209 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A5 through A10 Boards and the Plenum Bracket Figure 7-6 A5 through A10 Board Assemblies and Plenum Bracket Removal Service Guide N5230-90024 7-17...
Page 210: Removing And Replacing The A14 System Motherboard
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A14 System Motherboard N5230C Removing and Replacing the A14 System Motherboard Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 211 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A14 System Motherboard Figure 7-7 A14 System Motherboard Removal Service Guide N5230-90024 7-19...
Page 212: Removing And Replacing The A15 Cpu Board
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A15 CPU Board N5230C Removing and Replacing the A15 CPU Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 213 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A15 CPU Board Replacement Procedure NOTE: If not already done, install a jumper between pins 9 and 10 on connector J11. See the following illustration for the J11 pin configuration. There should already be a jumper between pins 5 and 6.
Page 214 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A15 CPU Board N5230C Figure 7-8 A15 CPU Board Removal 7-22 Service Guide N5230-90024...
Page 215 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A15 CPU Board Service Guide N5230-90024 7-23...
Page 216: Removing And Replacing The A16 Test Set Motherboard And The Usb Hub
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A16 Test Set Motherboard and the USB Hub N5230C Removing and Replacing the A16 Test Set Motherboard and the USB Hub Tools Required • T-8 TORX driver (set to 5 in-lb) •...
Page 217 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A16 Test Set Motherboard and the USB Hub Figure 7-9 A16 Test Set Motherboard Removal Service Guide N5230-90024 7-25...
Page 218: Removing And Replacing The A17 Mass 26.5
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A17 MASS 26.5 N5230C Removing and Replacing the A17 MASS 26.5 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 219 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A17 MASS 26.5 Figure 7-10 A17 MASS 26.5 Removal Service Guide N5230-90024 7-27...
Page 220: Removing And Replacing The A18 Ma 26.5
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A18 MA 26.5 N5230C Removing and Replacing the A18 MA 26.5 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 221 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A18 MA 26.5 Figure 7-11 A18 MA 26.5 Removal Service Guide N5230-90024 7-29...
Page 222: Removing And Replacing The A19 Mass 50
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A19 MASS 50 N5230C Removing and Replacing the A19 MASS 50 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 223 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A19 MASS 50 Figure 7-12 A19 MASS 50 Removal Service Guide N5230-90024 7-31...
Page 224: Removing And Replacing The A20 Mixer Brick
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A20 Mixer Brick N5230C Removing and Replacing the A20 Mixer Brick Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 225 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A20 Mixer Brick Figure 7-13 A20 Mixer Brick Removal Service Guide N5230-90024 7-33...
Page 226: Removing And Replacing The A21 And A22 Test Port Couplers
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A21 and A22 Test Port Couplers N5230C Removing and Replacing the A21 and A22 Test Port Couplers (All analyzers except Option 220 with serial numbers prefixed MY4640 and above.)
Page 227 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A21 and A22 Test Port Couplers Figure 7-14 A21 and A22 Test Port Couplers Removal (All analyzers except Option 220 with serial numbers prefixed MY4640 and above.)
Page 228: Removing And Replacing The A21 And A22 Test Port Couplers
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A21 and A22 Test Port Couplers N5230C Removing and Replacing the A21 and A22 Test Port Couplers (For Option 220 analyzers with serial numbers prefixed MY4640 and above.) Tools Required •...
Page 229 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A21 and A22 Test Port Couplers Figure 7-15 A21 and A22 Test Port Couplers Removal (Option 220 analyzers with serial numbers prefixed MY4640 and above.) Service Guide N5230-90024...
Page 230: Removing And Replacing The A25 And A26 60-Db Source Step Attenuators (Option 1E1)
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A25 and A26 60-dB Source Step Attenuators (Option 1E1) N5230C Removing and Replacing the A25 and A26 60-dB Source Step Attenuators (Option 1E1) Tools Required • T-10 TORX driver (set to 9 in-lb) •...
Page 231 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A25 and A26 60-dB Source Step Attenuators (Option 1E1) Figure 7-16 A25 and A26 60-dB Source Step Attenuators Removal (Option 1E1) Service Guide N5230-90024 7-39...
Page 232: Removing And Replacing The A41 Hard Disk Drive (Hdd)
Copy Unique Files from the Hard Disk 1. Insert a USB flash memory drive into a USB port. 2. Open Windows Explorer. 3. Navigate to C:\Program Files\Agilent\Network Analyzer. 4. Copy each of the following files from the hard disk drive to the USB drive: • gen.lic •...
Page 233 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A41 Hard Disk Drive (HDD) Figure 7-17 Hard Disk Drive Assembly Removal Disassembling the HDDA NOTE If the HDD is being replaced by the HDDA (N8980A or N8981A), it is not necessary to perform these steps.
Page 234 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive (HDD) N5230C Figure 7-18 Hard Disk Drive Assembly with Parallel ATA Interface (Exploded View) 7-42 Service Guide N5230-90024...
Page 235 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A41 Hard Disk Drive (HDD) Figure 7-19 Hard Disk Drive Assembly with Serial ATA Interface (Exploded View) Service Guide N5230-90024 7-43...
Page 236 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive (HDD) N5230C Reassembly Procedure NOTE If the HDD is being replaced by the HDDA (N8980A or N8981A), it is not necessary to perform these steps.
Page 237 Set Up the Agilent Administrator Password After an HDD replacement, it is necessary to set up the Agilent administrator password for the analyzer. Go to the following Internet site, enter your PNA serial number, and get a six-digit numerical password: http://na.tm.agilent.com/pna/hdd/index.html#agpswd.
Page 238 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive (HDD) N5230C 6. Navigate to D:\CalFiles\. 7. Copy the backup files prefixed with mxcalfile_ from the USB memory drive to the HDD. 8. After all files have been copied, remove the USB memory drive from the USB port.
Page 239 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the A41 Hard Disk Drive (HDD) Service Guide N5230-90024 7-47...
Page 240: Removing And Replacing The Midweb And The B1 Fan(S)
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Midweb and the B1 Fan(s) N5230C Removing and Replacing the Midweb and the B1 Fan(s) Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 241 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the Midweb and the B1 Fan(s) Removing the Midweb Refer to Figure 7-20. ① 1. Disconnect the power cable (item ) for the three fans from the A14 system motherboard.
Page 242 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Midweb and the B1 Fan(s) N5230C Removing the Fan(s) Refer to Figure 7-21. 1. To remove any one of the three fans, it is necessary to remove the four nylon rivets that attach it to the ➀...
Page 243 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the Midweb and the B1 Fan(s) Service Guide N5230-90024 7-51...
Page 244: Removing And Replacing The Lithium Battery
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Lithium Battery N5230C Removing and Replacing the Lithium Battery Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 245 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5230C Removing and Replacing the Lithium Battery Figure 7-22 Lithium Battery Removal Service Guide N5230-90024 7-53...
Page 246: Post-Repair Procedures
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures N5230C Post-Repair Procedures After the replacement of an assembly, you must perform the service procedures in the order listed in Table 7-2. Procedures referenced in this table are located in Chapter 3, “Tests and Adjustments,”...
Page 247 No adjustment needed None a. This adjustment is intended for Agilent personnel only and requires a password to run. It applies only to analyzers with firmware revision codes 4.83 and higher. b. If a backup copy of receiver calibration data from the faulty disk drive is available, it can be copied to the new disk drive.
Page 248 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures N5230C 7-56 Service Guide N5230-90024...
Page 249: General Purpose Maintenance Procedures
General Purpose Maintenance Procedures Service Guide N5230-90024...
Page 250: Information In This Chapter
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Information in This Chapter N5230C Information in This Chapter Chapter Eight at-a-Glance Section Title Summary of Content Start Page Error Terms How to use error terms as a preventive maintenance page 8-3 and troubleshooting tool.
Page 251: Error Terms
PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C Error Terms Error Terms Using Error Terms as a Diagnostic Tool By examining error terms, you can monitor system performance for preventive maintenance and troubleshooting purposes. The magnitude and shape of the error terms are affected by: •...
Page 252: Using Flowgraphs To Identify Error Terms
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5230C as a tool: CAUTION Perform the following procedure only at a static-safe workstation, and wear a grounded wrist strap. This is important. If not properly protected against, electrostatic discharge can seriously damage your analyzer, resulting in costly repair.
Page 253 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C 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)
Page 254 General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5230C Figure 8-3 Flowgraph of Three-Port Error Terms where: E = error term DIR = Directivity MAT = Forward Source Match and Reverse Load Match TRK = Forward Reflection Tracking and Reverse Transmission Tracking...
Page 255 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C Error Terms Figure 8-4 Flowgraph of Four-Port Error Terms where: E = error term DIR = Directivity MAT = Forward Source Match and Reverse Load Match TRK = Forward Reflection Tracking and Reverse Transmission Tracking...
Page 256: Accessing Error Terms
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5230C Accessing Error Terms Error terms can be accessed either manually or programmatically: Manually • “Front Panel Access to Error Terms” on page 8-8 Programmatically • “GPIB Access to Error Terms” on page 8-9 •...
Page 257 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C Error Terms Programmatic Access to Error Terms GPIB Access to Error Terms You can access error terms by way of GPIB with Standard Commands for Programmable Instruments (SCPI). For more information on GPIB and SCPI, refer to the embedded help in the analyzer. Type in keyword “errors, systematic”...
Page 258: Error Term Data
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5230C Error Term Data The error term descriptions in this section include the following information: • a table of the error terms • description and significance of each error term •...
Page 259 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C Error Terms Directivity (E and E and E are the uncorrected forward and reverse directivity error terms of the system. The directivity error of the test port is determined by measuring the S and S reflection of the calibration kit load.
Page 260 General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5230C Reflection Tracking (E and E Reflection tracking is the difference between the frequency response of the reference path (R1 or R2path) and the frequency response of the reflection test path (A or B input path). These error terms are...
Page 261 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5230C Error Terms Isolation (E and E Isolation, or crosstalk, is the uncorrected forward and reverse isolation error terms that represent leakage between the test ports and the signal paths. The isolation error terms are characterized by measuring transmission (S ) with loads attached to both ports during the measurement calibration.isolation...
Page 262: Option Enable Utility
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Option Enable Utility N5230C Option Enable Utility Accessing the Option Enable Utility To start the option enable utility: • On the menu, point to , and then click System Service Option Enable •...
Page 263: Enabling Or Removing Options
It is necessary to backup all installed software options if the frequency reference board is replaced. NOTE Some applications require a license key that is provided by Agilent. If you do not have the required license key, contact Agilent for assistance. Refer to “Contacting Agilent” on page 2-10.
Page 264: Repairing And Recovering Option Data
, and then click , or System Service Option Enable b. On the menu, click Help About Network Analyzer NOTE If the options are still not listed correctly, contact Agilent for assistance. Refer to “Contacting Agilent” on page 2-10. 8-16 Service Guide N5230-90024...
Page 265: Installing Or Changing A Serial Number
2. VERY CAREFULLY, type the new serial number into the space provided and then click Change 3. If an error is made in entering the serial number, obtain a clear code from Agilent, enter the clear code in the space provided, and then click .
Page 266: Firmware Upgrades
If your network analyzer is connected to the Internet, there are two methods available for checking the availability of, and downloading, new firmware: • Download directly from: http://www.agilent.com/find/pna. (Select your analyzer’s model number in this website to view available upgrades.) •...
Page 267: Operating System Recovery
Operating System Recovery Recovering 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.
Page 268: Correction Constants
3-35 in this manual, store the correction constants to a backup file on the analyzer hard disk drive by performing these steps: • Navigate to the EEPROM Backup Utility, located at: C:\Program Files\Agilent\Network Analyzer\Service\eebackup.exe • the program. • Click Backup EEPROM •...
Page 269 Index Numerics operation 5-11 procedure 7-34 7-36 part number 6-16 6-20 6-24 6-28 troubleshooting 4-36 4-37 010, time domain option removal and replacement 7-24 A25 test port 1 step attenuator 014, configurable test set option illustrated 6-21 6-29 illustrated 7-25 080, frequency offset mode option operation 5-16...
Page 270 AUX I/O connector display assembly 5-23 getting ready pin assignments 5-14 fractional-N synthesizer boards administrator password rear panel 5-11 front panel interface board 5-23 Agilent 7-45 front panel subgroup 5-23 Agilent hard disk drive 5-25 administrator password 7-45 keypad assembly 5-23 Index-2...
Page 271 Index part numbers 6-30 part numbers 6-14 replaceable parts calibration B channel certificate of illustrated 6-29 troubleshooting 4-25 coefficients test 3-33 part numbers 6-28 typical power output 4-36 commercial, built-in tests, Option 897 bracket B trace attenuator troubleshooting 4-25 4-27 illustrated 6-35 kits...
Page 272 8-20 required system verification 3-24 contacting Agilent 2-10 error term data digital control group controller board, touch screen description of 8-10 block diagram 5-22 removal and replacement...
Page 273 Index identifying using flowgraphs downloading from the internet 8-18 removal and replacement isolation 8-13 flowgraph illustrated of one port error terms load match 8-11 procedure of two port error terms magnitude replaceable parts using to identify error terms affected by illustrated 6-11 Fourier transform...
Page 274 Index procedure 7-40 instruction documentation symbol kits instrument markings calibration replaceable parts instrument specifications handle illustrated 6-45 interconnects part numbers 6-48 part numbers 6-42 AUX I/O rack mount unique files located on 7-40 pin assignments 5-14 part numbers 6-48 hard disk drive (parallel ATA) front panel 5-23 illustrated...
Page 275 Index operation removal and replacement 7-48 specifications part number 6-24 6-28 illustrated 7-49 verification removal and replacement midweb fans operating system troubleshooting 4-11 recovery 8-19 illustrated 7-29 miscellaneous parts operation procedure 7-28 location of part numbers configurable test set, Option 014 5-16 troubleshooting 4-37...
Page 276 Index Option 014, configurable test set cables in bottom assembly block diagram 5-17 GPIB 6-46 illustrated 6-35 description of cables, all part numbers 6-34 normal configuration 5-17 in top assembly, all options 6-14 in bottom assembly, option 220 operation 5-16 documentation 6-46 illustrated...
Page 277 RS-232 5-24 power supply assembly part numbers 6-32 SERIAL 5-24 illustrated 6-13 password TEST SET I/O 5-11 part number 6-12 Agilent administrator 7-45 TRIG IN 5-11 removal and replacement performance TRIG OUT 5-11 illustrated 7-15 tests 5-24 procedure 7-14 calibration coefficients...
Page 278 Index caution about replaceable parts A15 CPU board hardware, in bottom assembly warnings about illustrated 7-22 illustrated 6-35 repairing procedure 7-20 option data 8-16 part numbers 6-34 A16 test set motherboard replaceable cables in bottom assembly, option 220 illustrated 7-25 in bottom assembly, option 220 illustrated 6-17...
Page 279 4-12 warnings failure of 3-13 specifications warranty test port cables 3-13 instrument one-year return to Agilent 2-10 RFI/EMI stabilization, warm up time standard 2-10 supplies system shipment for service or repair 2-11 part numbers 6-47...
Page 280 6-47 performance, N7840A 3-28 3-28 support source group 4-28 receiver compression 3-31 contacting Agilent 2-10 time domain, Option 010 source power linearity 3-29 options 2-10 tools test port output power linearity 3-29 organization...
Page 281 Index troubleshooting 4-25 4-27 front panel keypad 4-12 upgrade kits part numbers 6-47 trace R2 front panel knob 4-12 troubleshooting 4-25 4-27 front-panel USB 4-12 accessories trace, all GPIB port 4-18 troubleshooting 4-26 part numbers 6-47 4-19 traceability port measurement system 4-23 measurement 3-21...
Page 282 Index service one-year return to Agilent 2-10 standard 2-10 Windows Index-14 Service Guide N5230-90024...

Agilent Technologies N5230C Service Manual

1 Safety and Regulatory Information

2 General Product Information

3 Tests and Adjustments

4 Troubleshooting

5 Theory of Operation

6 Replaceable Parts

7 Repair and Replacement Procedures

8 General Purpose Maintenance Procedures

Quick Links

Troubleshooting

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Summary of Contents for Agilent Technologies N5230C