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General| Brand | HP |
|---|---|
| Model | 3400B |
| Category | Measuring Instruments |
| Language | English |
Steps to verify the voltmeter is ready for use, including checking supplied items and settings.
Instructions on selecting the appropriate voltage range for measurements.
Guidance on utilizing the rear-panel DC output jack for data plotting and higher resolution measurements.
Procedures for mounting the voltmeter in a standard 19-inch rack cabinet using optional kits.
Determines the regular interval for voltmeter calibration based on application accuracy requirements.
Estimates the time needed for manual calibration procedures, typically one hour.
Lists essential test equipment for verification and adjustment procedures.
Ensures proper operation by verifying power line voltage and environmental conditions.
Verifies voltmeter meets selected specifications through partial frequency response tests.
Tests electrical performance against specifications for incoming inspection and maintenance.
Procedures to adjust the voltmeter for peak performance, often after repair.
Details the pinout of test connector J3 for accessing test points on the main circuit board.
Instrument block diagram illustrating attenuators, amplifiers, and meter circuitry.
Description of the capacitive-compensated input attenuator with two ranges.
Explanation of the FET-follower circuit used to match impedances.
Details the resistive divider post attenuator providing six ranges of attenuation.
Description of the two-stage wideband amplifier providing constant gain across the frequency range.
Explains the servo loop formed by chopper op amp and thermocouple pair for RMS value positioning.
Details the DC operating voltages provided by the power supplies and regulators.
Describes the switch control circuitry and its interface to other components.
Items to check before returning the voltmeter for service or repair.
Instructions for replacing the power-line fuse located on the rear panel.
Guidelines for properly packaging the instrument for shipment for service or repair.
Measures to prevent ESD damage to components during handling and servicing.
Steps to order replacement parts from HP or the manufacturer.
Guidance on referring to the backdating chapter for repair and parts ordering.
Diagrams illustrating the physical breakdown and assembly of the instrument.
Diagrams showing the physical placement of components on the PC boards.
Schematic for input attenuator, impedance converter, and power supply circuits.
Schematic for relay drivers and the post attenuator circuitry.
Schematics for wideband amplifier, chopper op amp, and overload detector circuits.
Schematic diagram for the switch board.
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