To Remove the A2 Display Board, Keypads, and Window | HP 181A

Chapter 3 Replacing Assemblies

To Remove the A2 Display Board, Keypads, and Window

To Remove the A2 Display Board, Keypads, and Window

1Remove the cover.

See the section titled “To Remove the Cover” in this chapter.

2Remove the front bezel.

See the section titled “To Remove the Front Bezel” in this chapter.

3Note that A2 Display Board Assembly, shown in Figure 3-7, is held in place by five tabs (two on top and three on bottom) which are part of the front bezel.

A2 Display Board Assembly

P/O Rubber Keypads (MP6)

Front Bezel (MP4)

BNC Nuts (H3) (Shown with Optional Channel 3)

Window (MP5)

Cap

P/O Rubber Keypads (MP6)

3

Figure 3-7. A2 Display Board, Keypad, and Window Removal

Assembly-Level Service Guide

3-11

Image 159

HP 181A manual To Remove the A2 Display Board, Keypads, and Window

Contents

HP 53131A/132A/181A 225 MHz Counter Page Assembly-Level Service Guide Safety Considerations contd Contents Test 2 Trigger Level HP 53131A/132A Only Test 5 Option 030/050/124 Channel 3 Frequency Test 2 Channel 1 Frequency Sensitivity HP 53181A Service About the HP 53181A Calibration Menu Replacing Assemblies Retrofitting Options Index Contents Xii Assembly-Level Service Guide How to Use This Guide Repair StrategyInstrument Identification Instruments Covered by this Guide Assembly-Level Service Guide Organization How to Order Guides Description of the 225 MHz Counters Assembly-Level Service Guide Xvii Hardware Options Support Accessories Supplied and AvailableAccessories Supplied Accessories Available Preface Performance Tests Introduction Operational VerificationIntroduction Test Record Complete Performance TestsOptional HP-IB Verification Recommended Calibration Cycle Equipment Required Equipment RequiredRecommended Test Equipment Power-On Self Tests HP 53131A/132A/181A Operational VerificationHP 53131A/132A/181A Operational Verification Counter HP 53131A/132A HP 53131A/132A/181A Operational Verification HP 53181A 1B. Operational Verification Setup for HP 53181A Digital Multimeter Run Self TestTermination Check Counter HP 3458A Press Channel 1 50Ω/1MΩ key Counter Setup External Arm Test HP 53131A/132A OnlyEquipment HP 8663A ProcedureSynthesized Signal Generator HP 8130A Pulse Generator External Timebase Tests MHz External Timebase Input HP 53131A and HP 53181A Only HP 3325B Synthesizer #1HP 3325B Synthesizer #2 Counter MHz External Timebase Input HP 53131A and HP 53181A Only MHz External Timebase Input for the HP 53132A HP 53131A/132A Complete Performance Tests HP 53131A/132A Complete Performance TestsHP 53131A/132A Performance Tests Test 1 Time Interval HP 53131A/132A Only Counter SetupTest 1 Time Interval HP 53131A/132A Only Equipment HP 8130A HP53131A/132Pulse Generator Counter Procedure Test 2 Trigger Level HP 53131A/132A Only Test 2 Trigger Level HP 53131A/132A Only HP 3325B HP 53131A/132A Synthesizer Counter Trigger Level Test Setup This is the trigger level it should be 0.0 V ±15 mV Equipment HP 8663A Synthesized Counter HP 8663A Synthesized Signal GeneratorKHz to 100 MHz Sensitivity for HP 53131A/132A HP 53131A/132A Ref. Performance Tests MHz to 200 MHz Sensitivity for HP 53131A/132A MHz to 225 MHz Sensitivity for HP 53131A/132A Equipment HP 53131A/132A Counter Channels 1 and 2 Frequency Accuracy Test Setup Performance Tests Equipment HP 8663A Synthesized Signal Generator HP 53131A/132A CounterSweep Oscillator To 3.0 GHz Sensitivity for Option 030 only Sweep the frequencies from 200 MHz to 5.0 GHz Sweep the frequencies from 200 MHz to 12.4 GHz Gate & ExtArm, Time Time 1.000 s On the Counter, press Run key Test 7 Peak Volts, Channels 1 and 2 HP 53131A/132A Only Test 7 Peak Volts, Channels 1 and 2 HP 53131A/132A Only HP 3325B HP 53131A/132ASynthesizer Counter Volt Peak Volt Peak HP 53131A/132A HP-IB Verification Program Optional HP 53131A/132A HP-IB Verification Program Optional HP 53131A/132A Performance Test Record Page 1 HP 53131A/132A Performance Test Record Page 1 HP 53131A/132A Performance Test Record Page 2 HP 53131A/132A Performance Test Record Page 2 HP 53131A/132A Performance Test Record Page 3 HP 53131A/132A Performance Test Record Page 3 HP 53131A/132A Performance Test Record Page 4 HP 53131A/132A Performance Test Record Page 4 HP 53131A/132A Performance Test Record Page 5 HP 53131A/132A Performance Test Record Page 5 HP 53131A/132A Performance Test Record Page 6 HP 53131A/132A Performance Test Record Page 6 HP 53181A Complete Performance Tests HP 53181A Complete Performance TestsHP 53181A Performance Tests Test 1 Trigger Level HP 53181A Only Test 1 Trigger Level HP 53181A Only HP 3325B HP 53181ASynthesizer Counter 11. Trigger Level Test Setup This is the trigger level it should be 0.0 V ±15 mV Test 2 Channel 1 Frequency Sensitivity HP 53181A Only Test 2 Channel 1 Frequency Sensitivity HP 53181A Only KHz to 100 MHz Sensitivity for HP 53181A 12. Channels 1 Frequency Sensitivity Test Setup Test 2 Channel 1 Frequency Sensitivity HP 53181A Only MHz to 225 MHz Sensitivity for HP 53181A MHz to 200 MHz Sensitivity for HP 53181A Test 3 Channel 1 Frequency Accuracy HP 53181A Only Test 3 Channel 1 Frequency Accuracy HP 53181A Only HP 8663A Synthesized Signal Generator HP 53181A CounterSweep Oscillator Test 3 Channel 1 Frequency Accuracy HP 53181A Only Equipment 14. Option 015/030/050 Channel 2 Frequency Test MHz to 1.5 GHz Sensitivity for Option 015 Only MHz to 2.7 GHz Sensitivity for Option 030 Only MHz to 5.0 GHz Sensitivity for Option 050 only MHz to 12.4 GHz Sensitivity for Option 124 only MHz to 1.5 GHz Accuracy Test for Option Connect equipment as shown in Figure Minimum to Maximum Accuracy Test for Options 030/050/124 Verify the HP 53181A Counter reads 100 MHz ±70 mHz Performance Tests Test 6 Peak Volts, Channel 1 HP 53181A Only Test 6 Peak Volts, Channel 1 HP 53181A Only 16. Peak Volts Test Setup HP 53181A HP-IB Verification Program Optional HP 53181A HP-IB Verification Program Optional HP 53181A Performance Test Record Page 1 HP 53181A Performance Test Record Page 1 HP 53181A Performance Test Record Page 2 HP 53181A Performance Test Record Page 2 HP 53181A Performance Test Record Page 3 HP 53181A Performance Test Record Page 3 HP 53181A Performance Test Record Page 4 HP 53181A Performance Test Record Page 4 Service Service Returning the Instrument to Hewlett-Packard for Service Returning the Instrument to Hewlett-Packard for ServiceTo Provide Repair Information To Pack in the Original Packaging Materials To Pack in the Commercially Available Materials About the HP 53131A/132A Calibration Menu Overview of the HP 53131A/132A Calibration MenuAbout the HP 53131A/132A Calibration Menu CAL Unsecure HP 53131A/132A Calibration Menu Tree Calibration procedures To View the Calibration Menu and Security Status To Unsecure for CalibrationTo Initiate the Calibration Routines Information about Calti QUIK? and Calti FINE? About the HP 53131A/132A Calibration Menu HP 59992A J06 Time Interval Calibrator HP 8130A HP 53131A/132A Pulse Generator Counter To Change to a New Security Code To Secure Against Calibration To Get Help with the Calibration Menu To View the Calibration Count To Calibrate the Offset for Channels 1 HP 53131A/132A Calibration ProceduresHP 53131A/132A Calibration Procedures First Determine the Counter Firmware Revision BAD Code HP 53131A/132A Calibration Procedures DC Power Supply HP 53131A/132A Counter To Calibrate the Gain for Channels 1Digital Multimeter Press Enter key again To Calibrate Time Interval HP 8130A HP53131A/132A Pulse Generator Counter CAL TI QUIK? Calibration HP 8130A Pulse Generator CAL TI FINE? Calibration TI CAL Pass House Standard MHz Reference HP 53131A/132A Counter To Calibrate the Standard Timebase Medium, High, or Ultra-High To Calibrate the High Stability Timebase Option About the HP 53181A Calibration Menu Overview of the HP 53181A Calibration MenuAbout the HP 53181A Calibration Menu About the HP 53181A Calibration Menu HP 53181A Calibration Menu Tree Key to access this menu To View the Calibration Menu and Security Status To Initiate the Calibration Routines To Change to New the Security Code HP 53181A Calibration Procedures HP 53181A Calibration ProceduresTo Calibrate the Offset for Channel BAD Code To Calibrate the Gain for Channel HP 53181A DC Power Supply Counter Digital Multimeter House Standard MHz Reference HP 53181A Counter To Calibrate the High Stability Timebase Option Pre-Troubleshooting Information Safety ConsiderationsPre-Troubleshooting Information Interruption is Prohibited Recommended Test Equipment Surface Mount Repair Disassembly and Reassembly SpecificsRepair Considerations Electrostatic Discharge After Service Considerations Product Safety ChecksProduct Performance Checks HP 53131A Assembly Identification Assembly Identification and Location 53132-60014 53131-69014 Assembly Name HP Part No Exchange Part A1 Motherboard Series 8A. Instrument Top Internal View 8B. Instrument Top Internal View Option Troubleshooting the Counter Power Supply Check Motherboard Assembly A4 AC Power Supply Voltages Wire Color Voltage ToleranceOverview of the Self-Test Routines Test Diagnosing the Faulty Assembly by Using Self TestsTo Run the Test-All Self Test Test Loop to OFF To Run the Individual Self Tests 11B. HP 53181A Self Test Troubleshooting Setup Failure Indicator Assembly at Fault Troubleshooting Replacing Assemblies Replacing Assemblies Tools Required Do This FirstTools Required Rear Bezel Removal To Remove the Cover Bottom View for Cover Removal To Remove the Front Bezel To Remove the Front Bezel Front Bezel Removal To Remove the Front Bezel To Remove A1 Motherboard Assembly To Remove A1 Motherboard Assembly A1 Motherboard Assembly Removal To Remove the A2 Display Board, Keypads, and Window To Remove the A2 Display Board, Keypads, and Window To Remove the A2 Display Board, Keypads, and Window To Remove A3 1.5/3.0/5.0/12.4 GHz Channel Assembly Option Replacing Assemblies015/030/050/124 Optional Channel Input Assembly Removal To Remove A4 AC Power Supply Assembly To Remove A4 AC Power Supply Assembly 10. Location of the Rubber Foot To Remove A5 DC Power Input Assembly Option To Remove A5 DC Power Input Assembly Option 11. DC Power Input Assembly Option 002 Removal Remove the cover Remove A6 High Stability Timebase Assembly To Remove the Rear Terminals Option To Remove the Rear Terminals Option 13. Rear Terminals Option 060 Removal To Remove the Rear Terminals Option To Remove the Rear Terminals Option Retrofitting Options Retrofitting Options Retrofitting Options To Retrofit A5 DC Power Input Assembly Option To Retrofit A5 DC Power Input Assembly OptionOption 002 DC Power Input Assembly Parts Preliminary Procedure 1A. DC Power Input Assembly Retrofitting Retrofitting Procedure 1B. DC Power Input Assembly Retrofitting To Retrofit A5 DC Power Input Assembly Option 1C. DC Power Input Assembly Retrofitting 1D. DC Power Input Assembly Retrofitting Dc-supply Option 001 Medium Stability Timebase Assembly Parts Option 010 High Stability Timebase Assembly PartsOption 012 Ultra-High Stability Timebase Assembly Parts Turn off the Counter and remove power cord Remove the cover High Stability Timebase Retrofitting Option 001, 010 To Retrofit the Rear Terminals Option Option 060 Rear Terminals PartsTo Retrofit the Rear Terminals Option 3A. Plug Removal for Rear Terminals Retrofitting 3B. Rear Terminals Retrofitting To the rear of the chassis To Retrofit the Rear Terminals Option Replaceable Parts Exchange Assemblies Exchange Assemblies Reference Designations Replaceable PartsReference Designations How To Order a Part How To Order a PartParts Identification Contacting Hewlett-Packard By telephoneFor mail correspondence, use the address below Cabinet Parts and Hardware Cabinet Parts and HardwareReference Designation Code Mfr Mfr Part Number Option MP2 MP3 Mfr Code Manufacturer Name Address Zip Code Manufacturer’s Code List Backdating Manual Changes Older InstrumentsInstrument this Guide Directly Applies To Backdating Hardware Change 2 New A3 5/12.4 GHz Prescaler AssemblyBackdating Hardware Change 1 Below Series Prefix 3711A Change 3 New Tcxo boards 10. A4 AC Power Supply -9V Output Check Option 010/012 Only Change 4 Series 3710A to 3705A Change 6 Below Series Prefix 3416A Change 5 Series 3705A to 3546A, 3548A Change 8 Below Serial Prefix 3404A Change 7 Below Serial Number 3349A01906 Backdating Firmware Backdating FirmwareAbout the HP 53131A Calibration Menu Change 1 Firmware Revisions 3317, 3335, 3402 About the HP 53131A Calibration Menu HP 53131A Utility/Calibration Menu Tree HP 53131A Calibration Procedures HP 53131A Calibration Procedures DC Power Supply HP 53131A Counter To Calibrate Time Interval HP 8130A HP53131APulse Generator Counter Equipment House Standard MHz Reference HP 53131A Counter Medium or High Change 2 53132A, Serial Prefix 3546A and Below Backdating SpecificationsBackdating Specifications Change 1 53131A, Serial Prefix 3710A and Below Change 3 53181A, Serial Prefix 3711A02841 and Below Backdating Specifications HP 53131A/132A Specifications Channel 1 & 2 Input Specifications1 Channel 1 & 2 Input Characteristics1Instrument Inputs External Arm Input Characteristics Channel 3 Input Specifications4Channel 3 Input Characteristics External Arm Input Specifications Internal Time Base Stability Time Base Output SpecificationsTime Base Time Base Measurement Specifications Measurement SpecificationsFrequency, Period Automatic or External Arming HP 53131A-Worst Case RMS Resolution HP 53132A-Worst Case RMS Resolution × Frequency Frequency Measurement Example LSD Time Interval Phase Pulse WidthRise/Fall Time Duty Cycle TotalizePeak Volts Measurement Definitions Definitions of Systematic Uncertainty Terms Trigger ErrorTrigger Level Timing Error Measurement Definitions Typical Versus Worst Case Specifications Time Interval Measurement LSD DefinitionAdditional Considerations for Digits and Time Arming Modes Measurement Arming Measurement Arming and ProcessingMeasurement Arming and Processing Gate Time Measurement Throughput Measurement Limits Measurement Statistics General Information General Information HP 53181A Specifications Channel 1 Input Characteristics Channel 1 Input Specifications Channel 2 Input Characteristics Channel 2 Input Specifications3 Time Base Where N = 1 for Ch1 Frequency 1 MHz Worst Case RMS Resolution Frequency Measurement Example Ratio 1 ⁄ Ch2 Freq × Gate Time Ratio 2 ⁄ Typical Versus Worst Case Specifications Available Statistics Power is removed from the counter General Information Index Index-2 Assembly-Level Service Guide Assembly-Level Service Guide Index-3 Index-4 Assembly-Level Service Guide Contacting Hewlett-Packard Page From front matter Manual Part Number