Keysight U1251 Quick Start Manual
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Keysight U1251 Quick Start Manual

Handheld digital multimeter
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Keysight U1251B and U1252B
Handheld Digital Multimeter
Quick Start Guide

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Summary of Contents for Keysight U1251

  • Page 1 Keysight U1251B and U1252B Handheld Digital Multimeter Quick Start Guide...
  • Page 3 Certificate of Calibration ✔ 9 V alkaline battery (for U1251B only) If anything is missing or damaged, please contact the nearest Keysight Sales Office. Your multimeter is capable of remote data logging. To use this feature, NO TE you will need an IR-USB cable (U1173A, purchased separately) and the Keysight GUI Data Logger Software (downloadable from www.keysight.com/find/hhTechLib).

  • Page 4: Charging The Battery

    Charging the Battery Use the specified accessory, the 24 V DC adaptor to charge the battery. 1 Remove and disconnect the test leads from the meter. 2 Turn the rotary switch to the position. Connect the power cord to the DC adapter.

  • Page 5: Functions And Features

    • Upon initial use (or after a prolonged storage period), the CAU TI O N CAU TI O N rechargeable battery may require three to four charge/discharge cycles before achieving maximum capacity. To discharge, simply run the multimeter under the rechargeable battery's power until it shuts down or the low battery warning appears.

  • Page 6: Input Terminals And Overload Protection

    Input Terminals and Overload Protection Measurement Functions Input Terminal Overload Protection Voltage 1000 V R.M.S Diode 1000 V R.M.S < 0.3 A short circuit Resistance current Capacitance Temperature Current (μA and mA) µA.mA 440 mA/1000 V 30 kA/fast-acting fuse Current (A) 11 A/1000 V 30 kA/fast-acting fuse U1251B and U1252B Quick Start Guide...

  • Page 7: Performing Voltage Measurements

    Performing Voltage Measurements Measuring AC voltage 1 Set the rotary switch to . For mode, press to ensure is shown on the display. 2 Connect the red and black test leads to input terminals V. mV (red) and COM (black) respectively. 3 Probe the test points and read the display.
  • Page 8 Using the Filter 1 To enter the Setup mode, switch off the meter, then turn the rotary knob to any non-OFF position while holding until you hear a beep. You may release once you hear the beep. 2 Press to scroll through the menu items until FiLtE is shown in the secondary display.

  • Page 9: Performing Current Measurements

    Performing Current Measurements To perform current measurements, set up your multimeter as shown in the figure below. For measuring DC current from a mixed signal in DC measure- ment mode, ensure that the Filter is enabled. Measuring AC current 1 Set the rotary switch to .

  • Page 10: Performing Resistance, Conductance, And Continuity Measurements

    Performing Resistance, Conductance, and Continuity Measurements Audible continuity 1 Set the rotary switch to 2 Connect the red and black test leads to input terminals Ω (red) and COM (black) respectively. 3 Probe the test points (by shunting the resistor) and read the display. 4 Press to scroll through audible continuity, conductance, and resistance tests as shown.
  • Page 11 Performing Capacitance and Temperature Measurements Capacitance 1 Set the rotary switch to 2 Connect the red and black test leads to input terminals (red) and COM (black) respectively. 3 Connect the red test lead to the positive terminal of the capacitor, and the black test lead to the negative terminal.

  • Page 12: Frequency And Frequency Counter Measurements

    Frequency and Frequency Counter Measurements Frequency Measurement During AC/DC voltage or AC/DC current measurements, you can measure the signal frequency by pressing at any time. Frequency Counter Measurement 1 Set the rotary switch to 2 Press to select the frequency counter (Hz) function.

  • Page 13: Square Wave Output (For U1252B Only)

    Square Wave Output (for U1252B only) 1 Turn the rotary switch to Default display setting is 600 Hz on secondary display and 50% duty cycle on primary display. 2 Press to scroll through the available frequencies (there are 28 frequencies to choose from). 3 Press to select duty cycle (ms) on the primary display.

  • Page 14: Safety Notices

    CAT III Category III 1000 V overvoltage protection 1000 V CAT IV Category IV 600 V overvoltage protection 600 V For further safety information details, refer to the Keysight U1251B and U1252B Handheld Digital Multimeter User’s Guide.
  • Page 15 This information is subject to change without notice. © Keysight Technologies 2009 - 2014 Edition 6, August 2014 *U1251-90046* U1251-90046 www.keysight.com...

This manual is also suitable for:

U1252

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