Keysight U1251B Quick Start Manuals

repair and service) Safety and EMC Information This meter is safety-certified in compliance with EN/IEC 61010-1:2001, UL 61010-1 Second Edition and CAN/CSA 22.2 61010-1 Second Edition, CAT III 1000 V/CAT IV 600 V Overvoltage Protection, Pollution Degree II. Use with standard ...

3 ENGLISH The following items are included with your multimeter: ✔ Silicone test leads ✔ 4 mm probes ✔ Alligator clips ✔ Printed Quick Start Guide ✔ Certificate of Calibration ✔ 9 V alkaline battery (for U1251B only) ✔ Rechargeable 8.4 V battery (for U1252B only) ✔ Power cord and AC adapter (for U1 ...

ENGLISH 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. 3 Plug the Red (+)/ Black (–) banana terminals of the DC adapter to th ...

5 ENGLISH 4 The primary display indicates “bAt” and the “SbY” flashes on the secondary display and a short tone sounds to remind you whether to charge the battery or not. Press to start charging the battery, or the meter will automatically start the self-test after the 24 V supply is applied. We recommend ...

ENGLISH Functions and Features Action Steps Turns ON backlight Press . Checks battery capacity Press and hold for >1 s. Freezes the measured value Press . Starts MIN/MAX/AVG recording Press and hold for >1 s. Offsets the measured value Press . Changes the measuring range Press . Turns on auto range Press and h ...

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

ENGLISH Performing Voltage Measurements Measuring AC voltage 1 Set the rotary switch to . For and 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. 4 Press to displa ...

9 ENGLISH Measuring DC voltage 1 Set the rotary switch to or . Ensure that 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. 4 Press to display dual measurements. Parameters can be switched c ...

ENGLISH 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 measurement mode, ensure that the Filter is enabled. Measuring AC current 1 Set the rotary switch to or . Press to ensure is shown o ...