Manuals / Agilent Technologies / Computer Equipment / Network Router

Agilent Technologies Z5623A manual General Troubleshooting Notes

Models: Z5623A

1 138

Download 138 pages 46.21 Kb

Page 127

WARNING

WARNING

CAUTION

CAUTION

Service

Troubleshooting

Troubleshooting

This section contains procedures for troubleshooting the test set to assembly level only. These procedures should enable you to determine whether the power supply, front panel, or main switch board needs replacing. Refer to the system block diagram (Figure 8-1 on page 8-2) as an aid in troubleshooting.

General Troubleshooting Notes

Always turn the instrument power off before removing or installing an assembly.

Some parts in the instrument have sharp edges. Work carefully to avoid injury.

If you need to disassemble the instrument, be sure to work at an antistatic workstation and use a grounded wrist strap. This will protect the instrument from electrostatic discharges (ESD) that could damage the instrument.

After identifying a defective assembly or board, inspect it for obvious, easy-to-fix defects such as bent pins on ICs or cold solder joints. Repair of these defects by qualified personnel will restore the instrument to normal operation much more rapidly than ordering a replacement assembly or board.

Troubleshooting Power Supply Problems

Turn the instrument on. Check the condition of the LCD on the front panel:

•If it is off, there is still a possibility that the power supply is not supplying the necessary +24V, +12V, and +5V to the main board.

•If the LCD is off, check the main fuse located in the power supply filter at the rear of the instrument.

•If the LCD is still off, check the cable between the main board and front panel board.

•Finally, disconnect the DC power cable from the power supply to the main switch board and measure the voltages. They should be +15V, +12V, and +5V. If not, replace the power supply.

Agilent Technologies Z5623A Option H48

8 -5

Image 127

Agilent Technologies Z5623A manual General Troubleshooting Notes, Troubleshooting Power Supply Problems

Contents

Manufacturing Part Number Z5623-90016 June Agilent Technologies Z5623A Option H48DFARS/Restricted Rights Notice Warranty StatementSafety Notes Page Contents Calibrating the Network Analyzer Measuring Multiport Devices Contacting Agilent Instrument Description Overview Typical Equipment SetupSpecifications Agilent Z5623A Option H48 Guaranteed Performance Specs Guaranteed PerformanceParameter Specification Agilent Z5623A Option H48 Typical Performance Specs Typical PerformanceParameter Typical Performance Non-Operating Storage Conditions Electrical RequirementsEnvironmental Requirements Operating EnvironmentMiscellaneous Characteristics General CharacteristicsWeight Cabinet DimensionsCleaning Cleaning and Shipping InstructionsShipping Installation Checking the Shipment Accessories Supplied with Z5623A Option H48Description Agilent Part Number Quantity Recommended Equipment Not Supplied With Test Set Recommended Additional EquipmentDescription Model Or Part Number Quantity Electrical Preparations Familiarization with Safety RequirementsElectrical Preparations Power Cables Ventilation Clearance Requirements Environmental PreparationsExample of an Antistatic Workstation Test Set Familiarization Front Panel FeaturesFront Panel Port Connection Status LCD Rear Panel Rear Panel FeaturesLine Fuse Gpib Address Switches Setting the Gpib Address of the Test SetEquation RF Cables Connecting Network Analyzer to Test Set Connecting and Turning on the Test SetLength Purpose Detailed Equipment Connection Diagram Connecting and Turning on the Test Set Using the Network Analyzer to System Menu Preparing the Analyzer to Control the Test SetSICL/GPIB Window Interactive Control window PNA DeskTopUser Controller Window Manual Control Window Step How to Send a Manual CommandThis section explains several common errors Common Errors in Manual CommandsTest Port Commands Connection Path List of Gpib CommandsCommand Ooooo Loool Restoring the Analyzer to its Normal Configuration Recovery Procedure Disaster RecoveryMalfunctioning Command Window SymptomsNetwork Analyzer Screen With Four Applications Running 10 Analyzer Screen After Right-Click On My Computer Icon 12 Hardware Tab In System Properties Window 13 Device Manager Window 15 Gpib Device Disabling Message Malfunctioning Network AnalyzerCalibrating the Network Calibrating the Network Analyzer Performing the CalibrationCalibration Menu on Network Analyzer Cal Type Window When It Is First Opened Electronic Calibration Window 10 Cal Wizard Window After Cal Is Complete 11 My Computer Window Renaming the Calibration File12 Root Directory of the C Drive 14 C\Program Files\Agilent Directory 16 Directory Containing Cal Files 18 Cal File Highlighted 19 Preparing to Rename the Cal File Name of Calibration File 20 The Cal File After It Has Been RenamedRecalling and Examining Calibrations How to Recall a CalibrationMethod 1. Calibration File Is Not On Quick Recall List 22 File Recall Window Method 2. Calibration File Is On Quick Recall List How to Turn a Calibration On and OffCorrection On/Off button 25 Calibration Turned On 27 Calibration Properties Button How to Examine the Properties of a CalibrationPerformance Verification Equation 5-1 How to Set Test Limits Setting Test LimitsMeasurement Band KHz 1.3 GHz Set Parameter Specification Measurement Test Limit UncertaintyTest Strategy Return Loss Insertion LossCrosstalk Limit Test Files Setting Up Limit TestingTest Name File Name Recalling the Calibration Limit Testing for Insertion LossSpecifying Measurement Type, Title, and Scaling Title... Button Title Entry Window With Insertion Loss Entered Scale Window With Default Values Limit Test... Button Setting Up the Limit Table11 Completed Limit Table for Insertion Loss Empty Limit Table Limit Table Entries for Insertion Loss12 Turning On Limit Testing and Limit Line Display Turning On Limit Lines and Limit Testing14 Save As... Button 15 Save As... Window Checking the Limit Test File 17 Insertion Loss Test Setup, Cal File Recalled18 Insertion Loss Test Setup, Limit Test File Recalled 19 Title Entry Window With Return Loss Port Active Entered Limit Testing for Return Loss Port ActiveSegment Beginning Ending Number Type Stimulus Response Limit Table Entries for Return Loss Port Active22 Return Loss Port Active Limit Test On ECal Module Saving the Limit Test File Setting Up Limit Testing Limit Table Entries for Return Loss Port Off Limit Testing for Return Loss Port OffRecalling the Port Active Limit Test File Specifying the TitleRecalling the Limit Test File 24 Completed Limit Table for Return Loss Port OffSpecifying Output Power Limit Testing for Crosstalk26 Power Window with Default Values 28 The if Bandwidth... Button Specifying if Bandwidth and Averaging30 if Bandwidth Window with Value Desired for Crosstalk 32 Average Window with Default Settings 34 The Status Bar Button Setting Up Limit Testing 36 The Scale... Button 38 Completed Limit Table for Crosstalk Limit Table Entries for CrosstalkTurning On Limit Lines and Limit Testing Measurements Using The Reflection Port Verifying Return Loss and Insertion Loss SpecificationsMeasurements Using The Transmission Port Pass/Fail Test Results For Insertion Loss And Return Loss Verifying Crosstalk Specs 40 Setup for Measuring Crosstalk of Test SetTest Ports Result Pass/Fail Test Results for CrosstalkMeasuring Multiport Devices Calibrating the Test System Calibrating the Test System Calibrating the Test System Advanced Topics Query What the test set sends in response Using an External Computer to Control the Test SetGpib Queries Gpib QueriesLanguages Switch CountUsing Rocky Mountain Basic RMB Using Quick Basic or Visual BasicHpibEolhHpib7,,0 disable EOL Using HpveeUsing National Instruments Visa Control Line Commands for 9-Pin Connector Using the Control Lines ConnectorControl Lines Suggested External CircuitrySwitch Driver Circuit For Use With Control Lines Connector Adjustable Voltage Regulator Circuit Using the Control Lines Connector Service Z5623A Option H48 Block Diagram AdjustmentsTheory of Operation A1 Power Supply TheorySystem Theory Connector Replacement A2 Controller and A3 Switch Driver Board TheoryA4 Front Panel Display Theory General Troubleshooting Notes TroubleshootingTroubleshooting Power Supply Problems Troubleshooting the Controller and Switch Driver Boards Troubleshooting the Front Panel BoardReplaceable Parts for Z5623A Option H48 List of Replaceable PartsReference Description Part Number Quantity Designator Replaceable Parts for Z5623A Option H48 Safety and Regulatory Information Safety Information Safety Information Instrument Markings Laermangabe Noise Declaration Regulatory InformationStatement of Compliance with IEC Declaration of Compliance with German Noise RequirementsRegulatory Information Contacting Agilent Europe Contacting AgilentAmericas Asia Pacific and Japan