Keysight U1251 Quick Start Manual Download

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U1251B and U1252B Quick Start Guide

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 (

A and mA)

µA.mA

COM

440 mA/1000 V 30
kA/fast-acting fuse

Current (A)

COM

11 A/1000 V 30
kA/fast-acting fuse

Summary of Contents for U1251

Page 1: ...Keysight U1251B and U1252B Handheld Digital Multimeter Quick Start Guide ...

Page 2: ......

Page 3: ...apter for U1252B only Printed Quick Start Guide Certificate of Calibration 9 V alkaline battery for U1251B only NOTE Your multimeter is capable of remote data logging To use this feature you will need an IR USB cable U1173A purchased separately and the Keysight GUI Data Logger Software downloadable from www keysight com find hhTechLib WARNING Ensure the terminal connections are correct for that pa...

Page 4: ...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 the and the COM terminals respectively The DC adaptor can be replaced with a DC power supply in order to set the 24 V DC output and the over current limitation to a value more than 0 5 A Ensure that the polarity of the...

Page 5: ...new rechargeable battery This is a normal phenomenon with rechargeable batteries Remove the rechargeable battery from the device reinsert it and repeat the charging procedure 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 ...

Page 6: ...easurement 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 30 kA fast acting fuse ...

Page 7: ...he display 4 Press to display dual measurements Parameter can be switched consecutively 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 consecutively NOTE For...

Page 8: ... menu items until FiLtE is shown in the secondary display 3 Press or to enable the Filter 4 Press to save your changes 5 Press and hold until the meter restarts and returns to its normal operating mode CAUTION CAUTION To avoid possible electric shock or per sonal injury enable the Filter to verify the presence of hazardous DC voltages Displayed DC voltages can be influenced by high frequency AC co...

Page 9: ...ds to input terminals µA mA red and COM black or A blue and COM black respectively 3 Probe the test points in series with the circuit and read the display Measuring DC current 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 µA mA red and COM black or A blue and COM black respectively 3 Probe the test points in series with ...

Page 10: ...ts 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 Audible continuity ...

Page 11: ...ely 3 Connect the red test lead to the positive terminal of the capacitor and the black test lead to the negative terminal 4 Read the display Temperature 1 Set the rotary switch to Press to select temperature measurement 2 Plug the thermocouple adapter with the thermocouple probe connected to it into input terminals red and COM black 3 Touch the measurement surface with the thermocouple probe 4 Re...

Page 12: ... 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 1 on the secondary display means the input signal frequency is divided by 1 This accommodates for higher frequency range of up to 985 kHz 3 Connect the red and black test leads to input terminals V red and COM black respectively 4 Probe the test poi...

Page 13: ...0 Hz on secondary display and 50 duty cycle on primary display 2 Press or to scroll through the available frequencies there are 28 frequencies to choose from 3 Press to select duty cycle ms on the primary display 4 Press or to adjust the duty cycle Duty cycle can be set for 256 steps and each step is 0 390625 The display only indicates the best resolution with 0 001 ...

Page 14: ...ditions are fully understood and met WARNING A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met Earth ground terminal Equipment protected throughout by double insula...

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 ...

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