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General| Brand | HP |
|---|---|
| Model | 400E |
| Category | Measuring Instruments |
| Language | English |
Overview of the HP Models 400E and 400EL AC Voltmeters and their capabilities.
Details on optional features like dB scale uppermost and relative reference adjustment.
Guidance on identifying the instrument and manual using serial numbers.
Information and instructions for installation and shipping of the Model 400E and 400EL Voltmeters.
Procedures for inspecting the instrument for physical damage and electrical order upon receipt.
Information on power sources, voltage selection, and power dissipation for the instrument.
Illustration and identification of standard power plug configurations and their part numbers.
Importance of grounding the instrument for operator protection and safety.
Information on setting up the instrument for bench use with included feet and tilt stand.
Explanation of the 400E/EL controls and operating procedures for each mode.
Identification and function of all controls and indicators on the 400E/EL front panel.
Operating procedures for the standard AC voltmeter mode and other functions.
Steps for making dB and dBm measurements, including scale reading and impedance considerations.
Procedures for using the instrument as an AC to DC converter, including output connection.
Instructions for using the instrument as a wide band AC amplifier, including gain and attenuation.
Operating details for the 400E model with Option 01, focusing on dB scale resolution.
Operating details for the 400E/EL model with Option 02, including relative reference adjustment.
Overview of the 400E/EL as a solid-state, average-responding, RMS-calibrated voltmeter.
Explanation of the instrument's block diagram, signal paths, and feedback mechanisms.
Detailed explanation of the impedance converter's function, stabilization, and overload protection.
Information required for maintaining the Model 400E/EL, including performance checks and calibration.
List of test equipment required for proper maintenance and calibration of the instrument.
Step-by-step procedure for performing a mechanical zero adjustment on the 400E model.
Procedures for "in cabinet" tests to verify instrument specifications and performance.
Methods for comparing the instrument's accuracy and frequency response to its specifications.
Procedure for checking the accuracy and frequency response on the 3V and 1V ranges.
Test to verify the instrument's accuracy with a 1/3 scale input across its entire frequency range.
Procedure for checking the accuracy and frequency response on the 3mV and 1mV ranges.
Procedures to check the input resistance and capacitance of the instrument.
Procedure to verify the output impedance of the AC to DC converter.
Procedure to check the AC output voltage of the amplifier across various ranges.
Statement confirming that passing checks means the instrument meets specifications.
"Cover off" procedures to adjust the instrument to its performance specifications.
Calibration steps related to accuracy and frequency response using specific equipment.
Step-by-step calibration using the HP 745A/746A Calibrator for specific frequency ranges.
Procedure to align the attenuator using a setup involving a reference supply and test oscillator.
An alternative procedure for performance checks and calibration using different test equipment.
Information on ordering replacement parts, including part lists and quantities.
Instructions on how to obtain replacement parts by contacting Hewlett-Packard Field Offices.
Guidance on how to order parts not found in the standard lists.
Introduction to the schematic diagram, component locator, and PC board layout for maintenance.
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