To Next PageTo Next Page
Need help?Do you have a question about the HP 437B and is the answer not in the manual?
General| Brand | HP |
|---|---|
| Model | 437B |
| Category | Measuring Instruments |
| Language | English |
One-year warranty against defects in material and workmanship, with repair or replacement options.
Exclusions from warranty coverage, including misuse, unauthorized modification, and environmental factors.
Buyer's sole remedies and HP's limitation of liability for damages.
Checks to perform before applying power, including line voltage and fuse installation.
Requirement for an uninterruptable safety earth ground connection for shock hazard prevention.
Explanation of symbols used in the manual indicating hazards and instructions.
Cautionary advice regarding hazards that could result in personal injury if not followed.
Advice regarding hazards that could result in damage or destruction of the product if not followed.
Overview of the adjustments section and requirements for performing adjustments.
Warnings to follow for protection and to avoid damage to equipment during adjustments.
List of recommended test equipment for performing adjustments.
Identification of factory-selected components and their selection criteria.
Adjustments related to repairs or replacement of assemblies.
Reference to Service Sheet A4C for this adjustment procedure.
Explains the purpose of the 220 Hz adjustment for maximum readout.
Lists the necessary equipment, including the Range Calibrator.
Step-by-step instructions for performing the 220 Hz frequency adjustment.
Reference to Service Sheet A4A for this adjustment procedure.
Explains the adjustment of ranges 4 and 5 shaper circuits for gain.
Lists the necessary equipment, including the Range Calibrator.
Step-by-step instructions for performing the ranges 4 and 5 shaper adjustment.
Reference to Service Sheet A4C for this adjustment procedure.
Variable inductor adjustment for power reference oscillator frequency.
Lists the necessary equipment, including a Frequency Counter.
Step-by-step instructions for adjusting the power reference oscillator frequency.
Reference to Service Sheet A4C for this adjustment procedure.
Adjusting the power reference oscillator output level to factory specifications.
Lists the necessary equipment for level adjustment.
Details the accuracy of DVM measurements and mathematical assumptions.
Explains the mathematical assumptions made during calculations for adjustments.
Step-by-step derivation of the formula used in level adjustment calculations.
Overview of the service section, including block diagrams, theory, and troubleshooting.
Information on foldout service sheets containing diagrams and associated data.
Details on the overall block diagram and its use as an index for troubleshooting.
Explanation of schematic diagrams and their role in understanding operation and troubleshooting.
Safety precautions before applying power and ensuring proper line voltage and fuse.
Attention to warnings and cautions for protection and to prevent equipment damage.
Lists test equipment, tools, and aids required for maintenance.
Recommended service tools, including screwdrivers and tuning tools.
Information on the sequential numbering of printed circuit board assemblies.
Location of components on circuit boards and reference designators.
Indicates test points and adjustments on circuit boards and locator diagrams.
Lists service aids on PCBs, including test points, LEDs, and designators.
Information on obtaining additional service literature from Hewlett-Packard.
Lists references for troubleshooting strategy, internal views, parts, and adjustments.
Explanation of the HP 437B Power Meter's functional sections.
Details the function and components of the digital section of the Power Meter.
Further details on the microprocessor, RAM, ROM, and PIA within the digital section.
Explanation of how the analog section measures input signals from the power sensor.
Details on range attenuators, gain amplifier, bandpass amplifier, and phase detector.
Information on the regulated voltages and standby voltage provided by the power supply.
Lists the test equipment required for troubleshooting the Power Meter.
Overview of the troubleshooting procedure and the Power Meter's major sections.
General techniques for troubleshooting, including cable checks and ESD precautions.
Step-by-step instructions for removing the top and bottom covers of the Power Meter.
Procedure to check the regulated voltages of the power supply.
Continuation of power supply voltage checks and ripple measurement.
Procedure to invoke self-tests and check for failures on the digital board.
Observation of display and service LEDs for error codes during self-tests.
Table of single error codes and corresponding troubleshooting suggestions.
Continuation of single error codes and their troubleshooting suggestions.
Table of multiple error code patterns and their troubleshooting suggestions.
Continuation of multiple error codes and their troubleshooting suggestions.
Procedure for replacing the battery when "RECALL FAIL" is displayed.
Initial steps for verifying the analog board's functionality.
Continuation of steps for verifying analog board functionality with a range calibrator.
Further steps for analog board verification, including signal checks with an oscilloscope.
Troubleshooting procedures for the analog board, focusing on microprocessor control.
Verification of digital control signals for the analog board using test points.
Checking waveforms at various test points related to range attenuators and amplifiers.
Checking waveforms for the variable gain amplifier and bandpass amplifier.
Checking phase detector waveform and ADC input signals.
Troubleshooting specific to Service Sheet A4c, focusing on recorder output and power reference signals.
Troubleshooting procedures for issues related to power sensor detection.
Verifying sensor voltage levels using a table of power ranges and resistor values.
Instructions for returning switches to original positions and restoring normal operation after testing.
