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Keysight U1252B User Manual

Keysight U1252B
722 pages
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Keysight U1251B and U1252B
Handheld Digital Multimeter
User’s and
Service Guide

Table of Contents

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Keysight U1252B Specifications

General IconGeneral
DisplayLCD
Operating Temperature0 °C to 50 °C
Safety CategoryCAT III 1000 V, CAT IV 600 V
Measurement FunctionsDC/AC voltage, DC/AC current, resistance, capacitance, frequency, temperature
DC Voltage Range1000 V
AC Voltage Range750 V
DC Current Range0.1 µA to 10 A
AC Current Range0.1 µA to 10 A
Capacitance Range1 nF
Temperature Range1000 °C
Basic DC Voltage Accuracy0.05%
Basic AC Voltage Accuracy0.5%
Basic Resistance Accuracy0.1%
Basic Capacitance Accuracy1.0%
Basic Frequency Accuracy0.1%
Storage Temperature-40 °C to 60 °C
Power Supply4 x AA batteries
Battery LifeUp to 300 hours

Summary

Getting Started

Check the shipment

Verify received items and inspect shipping container for damage. Save packaging for returns.

Installing the battery

Procedure for installing the 9V battery, noting that new rechargeable batteries require initial charging cycles.

The front panel at a glance

Identifies and describes the display, keypad, rotary switch, and terminal connectors on the front panel.

Making Measurements

Understanding the Measurement Instructions

Follows numerical steps labeled in diagrams for making measurements.

Measuring Voltage

Explains true-RMS readings for AC measurements and how to measure AC with DC offset (U1252B only).

Measuring Current

Explains how to set up the multimeter to measure μA, mA, and A (ampere) measurements.

Frequency Counter

Explains how to use the frequency counter for low voltage applications and provides warnings.

Functions and Features

Dynamic Recording

Explains how to use Dynamic Recording mode to detect intermittent turn-on/off, surges, or verify performance without operator presence.

Data Logging

Provides convenience of recording test data for future review or analysis, stored in non-volatile memory.

Changing the Default Setting

Selecting Setup Mode

Describes the procedure to enter and navigate the Setup mode to change menu items and settings.

Returning to Default Factory Settings

Describes how to reset all menu options to factory defaults, except for the temperature setting.

Setting the Filter

Explains how to filter AC signals in DC measurement paths and the default setting.

Maintenance

General maintenance

Provides steps for cleaning the meter case and terminal contacts to prevent measurement distortions.

Battery replacement

Details how to replace the 9 V Ni-MH rechargeable battery and when to do it based on the low battery indicator.

Troubleshooting

Offers basic troubleshooting procedures for common instrument malfunctions, such as no display, no beep tone, or current measurement failures.

Performance Tests and Calibration

Recommended Test Equipment

Lists the recommended test equipment for performance verification and adjustment procedures, suggesting substitutes if exact instruments are unavailable.

Calibration Security

Explains how the calibration security code prevents accidental or unauthorized adjustments and the factory default code.

Unsecuring the instrument for calibration

Details the procedure to unsecure the instrument from the front panel by entering the correct security code.

Adjustment Procedure

Details the steps for performing adjustments, including applying input signals and entering actual applied input values.

Specifications

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