Related Manuals for HP 8722ES
Summarization of Contents
Notice
Certification
Confirms product specifications met at shipment and calibration traceability.
Regulatory and Warranty Information
Indicates location of regulatory and warranty details within the manual.
Assistance
Provides contact information for customer assistance and service offices.
Safety Notes
How to Use This Guide
Explains document conventions like Front-Panel Key, SOFTKEY, and Screen Text.
Service Equipment and Analyzer Options
Information on This Chapter
Overview of the chapter's content regarding service equipment and analyzer options.
Service Test Equipment
Details on the test equipment required for servicing the analyzer.
Principles of Microwave Connector Care
Guidelines for proper handling and maintenance of microwave connectors.
Analyzer Options
Lists and describes various optional configurations available for the analyzer.
Service and Support Options
Information on available service and support packages for the instrument.
Adjustments and Correction Constants
Information on This Chapter
Introduction to the procedures for adjustments and correction constants.
A7 Switch Positions
Details on the switch positions for the A7 component.
Source Pretune Correction Constants (Test 43)
Correction constants for source pretune adjustments, including test procedures.
Analog Bus Correction Constants (Test 44)
Correction constants for analog bus adjustments, including test procedures.
IF Step Correction Constants (Test 47)
Correction constants for IF step adjustments, including test procedures.
ADC Offset Correction Constants (Test 48)
Correction constants for ADC offset adjustments, including test procedures.
Serial Number Correction Constants (Test 49)
Correction constants related to the instrument's serial number, including test procedures.
Protected Option Numbers Correction Constants (Test 50)
Correction constants for protected option numbers, including test procedures.
Unprotected Hardware Option Correction Constants
Correction constants for unprotected hardware options.
Output Power Adjustments
Procedures for adjusting the output power of the analyzer.
Power Linearity Adjustment
Steps for adjusting the power linearity of the instrument.
Blanking Adjustment (Test 54)
Adjustment procedure for blanking, including test specifications.
Initialize EEPROMs (Test 53)
Procedure to initialize EEPROMs, including test specifications.
EEPROM Backup Disk Procedure
Instructions for creating a backup disk for EEPROM data.
Correction Constants Retrieval Procedure
Steps for retrieving stored correction constants.
Loading Firmware
Procedures for loading new firmware into the analyzer.
Reference Assembly VCO Tune Adjustment
Procedure for tuning the VCO in the reference assembly.
Frequency Accuracy Adjustment
Steps to adjust the frequency accuracy of the instrument.
Start Troubleshooting Here
Information on This Chapter
Introduction to the troubleshooting process and chapter overview.
Assembly Replacement Sequence
Steps for correctly replacing assemblies in the analyzer.
Having Your Analyzer Serviced
Guidance on when and how to have the analyzer serviced by professionals.
Step 1. Initial Observations
First step in troubleshooting: making initial observations of the instrument.
Step 2. Operator's Check
Second step: performing a check of the analyzer's operator functions.
Step 3. HP-IB Systems Check
Third step: checking the analyzer's HP-IB interface and system connectivity.
Step 4. Faulty Group Isolation
Fourth step: isolating the faulty group or subsystem within the analyzer.
Power Supply Check
Troubleshooting procedures specifically for the analyzer's power supply.
Digital Control Check
Procedures for checking the digital control systems of the analyzer.
Verify Internal Tests Passed
Instructions to verify that internal diagnostic tests have passed successfully.
Source Check
Troubleshooting steps for the analyzer's signal source.
Receiver Check
Procedures for troubleshooting the analyzer's receiver section.
Overall Instrument Block Diagrams
Diagrams illustrating the overall block structure of the instrument.
Power Supply Troubleshooting
Information on This Chapter
Introduction to power supply troubleshooting procedures.
Power Supply Troubleshooting Flowchart
A flowchart guiding the user through power supply issue diagnosis.
Assembly Replacement Sequence
Steps for replacing power supply assemblies within the analyzer.
Simplified Block Diagram of Power Supply Group
A simplified block diagram of the power supply components.
Start Here
Starting point for power supply troubleshooting.
Check the Green LED and Red LED on the Preregulator (A15)
Instructions to check the status LEDs on the preregulator assembly.
Check the Green LEDs on the Post Regulator (A8)
Instructions to check the status LEDs on the post regulator assembly.
Measure the Post Regulator (A8) Voltages
Procedure to measure output voltages from the post regulator.
If the Green LED of the Preregulator (A15) Is Off or Blinking
Troubleshooting steps if the preregulator's green LED is off or blinking.
If the Red LED of the Preregulator (A15) Is On
Troubleshooting steps if the preregulator's red LED is illuminated.
Check the Post Regulator (A8)
Procedure to check the post regulator assembly.
Verify the Preregulator (A15)
Verification steps for the preregulator assembly.
Check the Operating Temperature
Ensuring the instrument operates within acceptable temperature limits.
Check for a Faulty Assembly
General checks to identify a faulty assembly within the power supply.
Inspect the Motherboard
Visual inspection of the motherboard for any visible issues.
If the Green LEDs of the Post Regulator (A8) Are Not All ON
Troubleshooting when post regulator LEDs are not all illuminated.
Maintain A15W1 Cable Connection
Ensuring the A15W1 cable connection is properly maintained.
Check the Post Regulator (A8) Fuses and Voltages
Checking fuses and voltages related to the post regulator.
Remove the Assemblies
Procedure for removing various assemblies from the power supply section.
Briefly Disable the Shutdown Circuitry
Steps to temporarily disable the shutdown circuitry for testing.
Error Messages
Information on interpreting and resolving power supply related error messages.
Check the Fuses and Isolate A8
Checking fuses and isolating the A8 component for troubleshooting.
Fan Troubleshooting
Procedures for diagnosing and resolving issues with the cooling fan.
Intermittent Problems
Strategies for troubleshooting intermittent power supply issues.
Power Supply Block Diagram
A detailed block diagram of the power supply system.
Digital Control Troubleshooting
Information on This Chapter
Overview of the chapter covering digital control troubleshooting.
Assembly Replacement Sequence
Recommended sequence for replacing digital control assemblies.
CPU Board (A7) Troubleshooting
Specific troubleshooting steps for the CPU board (A7).
A7 Switch Positions
Information regarding the switch positions on the A7 CPU board.
Checking The CPU (A7) Red LED Patterns
How to interpret red LED patterns on the CPU board for diagnostics.
Display Troubleshooting (A18,A19)
Troubleshooting procedures for the display assemblies (A18, A19).
Evaluating Your Display
Guidance on evaluating the performance and appearance of the display.
Red, Green, or Blue Pixels Specifications
Specifications for red, green, and blue pixels on the display.
Dark Pixels Specifications
Specifications related to dark or dead pixels on the display.
Newtons Rings
Information on Newtons Rings phenomenon affecting displays.
Troubleshooting the GSP (A19) and the Display (A18)
Troubleshooting the Graphics System Processor (GSP) and display interface.
Measure the Supply Voltages Applied to the GSP (A19)
Measuring supply voltages delivered to the GSP assembly.
Source Troubleshooting
Information on This Chapter
Chapter introduction to source troubleshooting procedures.
Source Troubleshooting Flowchart
Flowchart for diagnosing and resolving issues with the signal source.
Assembly Replacement Sequence
Recommended sequence for replacing source assemblies.
Start Troubleshooting Here.
Starting point for source-related troubleshooting.
Power Not within Specifications
Troubleshooting when source power output is outside specifications.
Phase Lock Error Message Displayed
Diagnosing and resolving phase lock error messages from the source.
Broadband Phase Lock Problems
Addressing phase lock issues across a broad range of frequencies.
Swap IF Output Cables to Check R Sampler Assembly (A64)
Using cable swapping to test the R Sampler Assembly (A64).
Check Open Loop Power.
Procedure to check the open-loop power of the source.
Check Reference Board (A12).
Instructions for checking the reference board (A12).
Check Fractional-N Digital (A14) with ABUS
Checking the Fractional-N digital circuit (A14) using the ABUS.
Check the Fractional-N Analog (A13) and Fractional-NDigital (A14) with a Spectrum Analyzer
Using a spectrum analyzer to check Fractional-N analog and digital circuits.
Check the VCO (A14) Range with Oscilloscope
Using an oscilloscope to check the voltage-controlled oscillator (VCO) range.
Substituting Tuning Voltages to Check the VCO
Procedure to check the VCO by substituting tuning voltages.
Divide-by-N (A14) Circuit Check
Checking the divide-by-N circuit within the A14 component.
A14-to-A13 Digital Control Signals Check
Verifying digital control signals between A14 and A13.
Pulse Generator (A52) Check with Oscilloscope
Using an oscilloscope to check the pulse generator (A52).
Pulse Generator (A52) Check with Spectrum Analyzer
Using a spectrum analyzer to check the pulse generator (A52).
ALC/Signal Separation Check
Checking Automatic Level Control (ALC) and signal separation.
Band-Related Problems
Troubleshooting issues related to specific frequency bands.
Broadband Power Problems.
Diagnosing power issues across a broad frequency spectrum.
Step Attenuator (A69) Check
Procedure for checking the step attenuator (A69).
Receiver Troubleshooting
Information on This Chapter
Introduction to receiver troubleshooting procedures.
Assembly Replacement Sequence
Recommended sequence for replacing receiver assemblies.
All Signal Paths Look Abnormal
Troubleshooting when all signal paths exhibit abnormal behavior.
2nd LO Check
Procedure for checking the second local oscillator (2nd LO).
4 MHz Check
Diagnostic steps related to the 4 MHz signal path.
At Least One Signal Path Looks Normal
Troubleshooting when at least one signal path appears normal.
Directional Coupler Check
Procedure for checking the directional couplers in the receiver.
Accessories Troubleshooting
Information on This Chapter
Overview of troubleshooting procedures for analyzer accessories.
Inspect and Gauge Connectors
Instructions for inspecting and gauging the condition of connectors.
Inspect the Error Terms
Guidance on inspecting and interpreting error terms for diagnostics.
Isolate the Fault in the RF Path
Steps to isolate faults specifically within the RF signal path.
Verify the RF Cable
Procedure for verifying the integrity and functionality of RF cables.
Verify Shorts and Opens by Substitution
Using substitution methods to check for shorts or opens in accessories.
Service Key Menus and Error Messages
Information on This Chapter
Introduction to service menus, keys, and error message interpretation.
Error Messages
Lists and explains various error messages encountered during service.
Service Menus - Internal Diagnostics
Details on accessing and using internal diagnostic menus.
Tests Menu
Information about the 'Tests' menu and its functions.
Test Options Menu
Description of the options available within the tests menu.
Self Diagnose Softkey
Explanation of the 'Self Diagnose' softkey for automated checks.
Test Descriptions
Detailed descriptions of various diagnostic and service tests.
Service Menu - Service Features
Overview of the service features accessible via the service menu.
Service Modes Menu
Information on navigating and utilizing different service modes.
Service Modes More Menu
Accessing additional service modes and their functions.
Analog Bus on OFF
Details regarding the state of the analog bus when turned off.
PEEK/POKE Menu
Explanation of the PEEK/POKE menu for memory access.
Firmware Revision Softkey
Information on checking the firmware revision using a softkey.
HP-IB Service Mnemonic Definitions
Definitions for HP-IB mnemonics used in service operations.
Invoking Tests Remotely
Instructions for initiating tests remotely via HP-IB.
Analog Bus Codes
Reference codes for the analog bus system.
Service Related Error Messages in Alphabetical Order
An alphabetical listing of error messages relevant to service procedures.
Error Terms
Information on This Chapter
Introduction to error terms and their diagnostic significance.
Error Terms Can Also Serve a Diagnostic Purpose
Explains how error terms contribute to diagnosing instrument issues.
Measurement Calibration Procedure
Steps involved in calibrating measurements for error term accuracy.
Error Term Inspection
Guidance on inspecting and analyzing error terms.
Uncorrected Performance
Information on instrument performance before error term correction.
Error Term Descriptions
Detailed descriptions of various error terms and their meanings.
Directivity (EDF and EDR)
Explanation of directivity error terms (EDF, EDR).
Source Match (ESF and ESR)
Explanation of source match error terms (ESF, ESR).
Reflection Tracking (ERF and ERR)
Explanation of reflection tracking error terms (ERF, ERR).
Isolation (Crosstalk, EXF and EXR)
Explanation of isolation error terms like crosstalk (EXF, EXR).
Theory of Operation
Information on This Chapter
Introduction to the operational theory of the network analyzer.
System Operation
Detailed explanation of how the analyzer system operates.
Functional Groups of the Analyzer
Description of the major functional groups within the analyzer.
Power Supply Theory
Theoretical explanation of the analyzer's power supply system.
Digital Control Theory
Theoretical explanation of the analyzer's digital control circuitry.
Source Group Theory
Theoretical explanation of the signal source group.
Signal Separation: ES Models Only
Theory of signal separation specific to ES model analyzers.
Signal Separation: ET Models Only
Theory of signal separation specific to ET model analyzers.
Receiver Theory
Theoretical explanation of the analyzer's receiver section.
Assembly Replacement and Post-Repair Procedures
Information on This Chapter
Overview of procedures for removing and replacing major analyzer assemblies.
Assembly Replacement Sequence
The recommended sequence for replacing analyzer assemblies.
Procedures in This Chapter
Detailed procedures for replacing various assemblies within the analyzer.
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