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Keysight U1231A, U1232A, and U1233A Handheld Digital Multimeter

1. A gt i WY Press to enable Es UT the Null function Wie ais f E A E PA 7 Auto H Auto 0 Li L 1 Li LI 600 0 L 1 Li Li i 600 APO l aan APO Gee y Press 3 to view the Display returns to stored null value normal after 3 seconds A gt m _ jf La a Auto O 600 w or 2 Press G again to disable the Null function A Figure 3 3 Null operation U1231A U1232A U1233A User s Guide 69 3 Multimeter Features Capturing Maximum and Minimum Values MaxMin Capturing Maximum and Minimum Values MaxMin The MaxMin operation stores the maximum minimum and average input values during a series of measurements When the input goes below the recorded minimum value or above the recorded maximum value the multimeter beeps and records the new value The multimeter also calculates an average of all readings taken since the MaxMin mode was activated From the multimeter s display you can view the following statistical data for any set of readings Max highest reading since the MaxMin function was enabled Min lowest reading since the MaxMin function was enabled Avg average or mean of all readings since the MaxMin function was enabled MaxMinAvg present reading actual input signal value This function is applicable to all measurements except for VZ ow Press i to enable the MaxMin operation Press i again to cycle through the Max Min Avg or pre
2. i 90 l N 50 i i 10 pa Width rl Width 1 i l Period Figure 2 26 Frequency definition Pressing controls the input range of the primary function voltage or ampere and not the frequency range e The frequency of the input signal is shown in the primary display and the bar graph does not indicate the frequency value but indicates the voltage or ampere value of the input signal q Ci i ly H lt as os Ss ml l l al ate Auto ARO Wnimininnininn EEE Figure 2 27 Frequency display Observe the following measurement techniques If a reading shows as 0 Hz or is unstable the input signal may be below or near the trigger level You can usually correct these problems by manually selecting a lower input range which increases the sensitivity of the multimeter U1231A U1232A U1233A User s Guide 63 2 Making Measurements Measuring Frequency NOTE Ifa reading seems to be a multiple of what you expect the input signal may be distorted Distortion can cause multiple triggerings of the frequency counter Selecting a higher voltage range might solve this problem by decreasing the sensitivity of the multimeter In general the lowest frequency displayed is the correct one Veense 5 Agilent U1233A True RMS Munimeter Voltage source Figure 2 28 Measuring frequency 64 U1231A U1232A U1233A User s Guide KEYSIGHT TECHNOLOGIES U1231A
3. rm v Ul a n 0 1 I 1 I 1 6 POMBE TTT TT EE Figure 2 13 Open diode display 46 U1231A U1232A U1233A User s Guide Making Measurements 2 Testing Diodes Veense patton 12320 roe ruis mimes Forward bias diode Figure 2 14 Testing forward bias diode U1231A U1232A U1233A User s Guide 47 48 Making Measurements Testing Diodes Veense patton 12320 roe ruis mimes Reverse bias diode ea ie Sar a Figure 2 15 Testing reverse bias diode U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring Capacitance Measuring Capacitance Set up your multimeter to measure capacitance as shown in Figure 2 17 Probe the test points and read the display CAUTION To avoid possible damage to the multimeter or to the equipment under test disconnect circuit power and discharge all high voltage capacitors before measuring capacitance Use the DC voltage function to confirm that the capacitor is fully discharged The multimeter measures capacitance by charging the capacitor with a known current for a known period of time measuring the resulting voltage and then calculating the capacitance Fl is shown on the left of the display when the capacitor is charging and J is shown when the capacitor is discharging q SU Ny Ut LOLGLS a Va Vas Auto 0 L I I I i 10 0 w hnnan EE Figure 2 16 Capacitance display To improve measurement accuracy of small value capacitors pre
4. ACLA AC Hz or gt DCuA U1231A N A U1233A U1232A DC uA pA HZ pA Hz lux U1231A Auxiliary temperature measurement 1 The open continuity test option must be enabled through the Setup menu To learn more see Enable open continuity test by default on page 99 The open continuity test option is disabled by default U1231A U1232A U1233A User s Guide 21 1 Introduction Your Multimeter in Brief Keypad The operation of each key is explained below Pressing a key enables a function displays a related symbol and emits a beep Turning the rotary switch to another position resets the current operation of the key Click the respective Learn more pages in Table 1 6 for more information on each function Table 1 6 Keypad functions Function when pressed for Learn Legend Less than 1 second More than 1 second more on ANG Sets the Null Relative mode Enters the Hold Log Recall menu Recall lt lt While in Null mode press 4 again to Press i to jump to the last record Press view the stored reference value that has and hold for more than 1 second to been saved The display will return to jump to the first record normal after 3 seconds e Press or to scroll through each page 68 Pressing C while the relative value is record and being displayed will cancel the Null mode Press G28 for more than 1 second to page 74 store all records into the multimeter s non volatile memory Press
5. 2 1 9 2 4 times second 100 uF 0 1 uF 1 9 2 1 9 2 1 9 2 1000 uF 1 uF 1 9 2 1 9 2 1 9 2 1 time second 10 mF 0 01 mF 1 9 2 1 9 2 1 9 2 0 1 times second Notes for capacitance specifications 1 Overload protection 600 Vrms for short circuits with lt 0 3 A current 2 The accuracy of for all ranges is specified based on a film capacitor or better and after the Null function is used to subtract the residual values by opening the test leads 3 The maximum display is 1200 counts 110 U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Electrical Specifications Temperature specifications Table 5 4 Temperature specifications Accuracy Thermal type Range Resolution U1233A 40 C to 1372 C 0 1 C 1 1 C K 40 F to 2502 F 0 1 F 1 1 8 F Notes for temperature specifications 1 The specification above is specified after the multimeter has been left stationary in the same operating environment for 1 hour at least If the unit is exposed during storage in a high humidity condensing environment ensure that the multimeter has been in the same operating environment for 2 hours at least 2 The accuracy does not include the tolerance of the thermocouple probe 3 Do not allow the temperature sensor to contact a surface that is energized above 30 Vrms or 60 V DC Such voltages poses a shock hazard 4 Ensure that the ambient temperature is stable within 1 C and that the Nu
6. for more than 1 second to clear all records e Press for more than 1 second to exit this mode Starts the MaxMin recording Stops the MaxMin recording Press ti again to cycle through maximum Press i for more than 1 second to exit Max minimum Min average Avg or this mode page 70 present MaxMinAvg readings Press G89 to restart the recording session Sets a manual range and disables Enables autoranging Range autoranging Futo ging page 9 Press C again to cycle through each available measurement range 22 U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Table 1 6 Keypad functions continued Function when pressed for Learn Legend Less than 1 second More than 1 second more on Freezes and stores the present reading inthe Automatically freezes the present reading a ter display egra mode once the reading is stable auo mode e In Trig Hold Log mode press G28 to e In Auto Hold Log mode the reading is manually trigger the holding of the next updated automatically once the reading is page 72 measured value stable and the count setting is exceeded Press G28 for more than 1 second to exit Press G89 for more than 1 second to exit this mode this mode Turns the LCD backlight on for 15 seconds Turns the LED flashlight on or off page 7and default or off page 7 Switches between the regular and shifted measurement function icon printed in For U1233A o
7. V or disabled 660 V Enable the voltage alert function by selecting E P gt e86 i enabled Default is disabled 030 d V pag F 39 3 2 3 4 3 8 4 2 kHz Set the multimeter s beep frequency 3 2 kHz 3 4 kHz age 87 b d or off 3 8 kHz 4 2 kHz or off Default is 3 8 kHz pag Set the auto power off timeout period from 1 to 99 minutes sap anil pa IGE 01 to 99 mins or disabled 1 hour 39 minutes Disable the auto power off function P e88 Eaa by selecting d disabled Default is 15 minutes pag Set the LCD backlight timeout period from 1 to 99 seconds adeT and h CE 01 to 99 s or disabled 1 minute 39 seconds Disable the LCD backlight timeout pag L Od page 89 by selecting d disabled Default is 15 seconds Set the LCD backlight brightness Lo 02 03 ME 05 06 or page 7 and j bi H Lo 02 03 ME 05 06 or Hi Hi Default is Hi page 90 Set the LED flashlight timeout period from 1 to 99 seconds l ice 01 to 99 s or disabled 1 minute 39 seconds Enable the LED flashlight timeout ae by selecting E enabled Default is disabled 15 d page 7 and page 91 HIH Lo 02 03 ME 05 06 or Hi Set the LED flashlight brightness Lo 02 03 ME 05 06 or page 7 and Hi Default is Hi page 92 Set the minimum measurement frequency 0 5 Hz or page 62 and m Fr us X 0 5 or 5 0 Hz 5 0 Hz Default is 0 5 Hz page 93 82 U1231A U1232A U1233A User s Guide Multimeter Setup Options Setup Menu Sum
8. 1 Introduction Your Multimeter in Brief Table 1 5 U1231A U1232A U1233A rotary switch functions Legend Functions shown in the primary display Learn U1233A U1232A U1231A Default When is pressed more on Cycles between VZiow DC AC V Z Z Z VZ ow Auto AC DC V LOW age 36 oy Toy Ve Low Auto VZiow AC DC V or pag ai VZi ow Auto AC DC V OFF OFF OFF off off page 5 yiz ykz viz ACV AC Hz page 32 and page 62 V V V DCV N A page 34 Cycles between inui 39 and a Resistance measurement Q Short 41 continuity page Q Q Q al Open 41 continuity or page 41 e Resistance measurement Q gt gt gt Diode test V N A page 45 U1233A Capacitance U1233A Temperature measurement F measurement U1232A Capacitance U1232A Auxiliary temperature page 49 and ar J JF aux JF measurement F measurement page 51 U1231A Capacitance U1231A N A measurement F 20 U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Table 1 5 U1231A U1232A U1233A rotary switch functions continued Legend Functions shown in the primary display Learn U1233A U1232A U1231A Default When G3 is pressed more on U1233A U1232A Cycles between ACA AC Hz or U1233A U1232A DC A DCA U1231A Clamp on AC A Aux U1231A Cycles between Clamp on DC A Aux page 57 and AC Hz or page 62 Clamp on AC A Aux rl mA Hz zawlz T aux U1233A U1232A Cycles between
9. Input Accuracy Function Range Resolution current voltage impedance U1231A U1232A U1233A where applicable 600 Q 01 Q 0 9 3 0 9 3 09 3 057mA 6 kol 0 001kK2 0 9 3 0 9 3 0 9 3 57 uA 60 KQ 0 01kQ2 0 9 3 09 3 09 3 5 7 uA Resistance 600 kQ 0 1 kQ 0 9 3 0 9 3 0 9 3 570 nA a o o a 100 nA 6 MQ 0 001 MQ 0 9 3 0 9 3 0 9 3 10 MQ eS i A 100 nA 60 MQ 0 01 MQ 15 3 1 5 3 1 5 3 7 10 MQ Notes for resistance specifications 1 Overload protection 600 Vrms for short circuits with lt 0 3 A current Maximum open voltage is lt 3 V 3 Built in buzzer beeps when the resistance measured is less than 23 Q 10 Q The multimeter can capture intermittent measurements longer than 1 ms 4 The accuracy of the 600 Q to 6 kQ range is specified after the Null function is used to subtract the test lead resistance and thermal effect by shorting the test leads 5 For the ranges of 6 MQ and 60 MQ the RH is specified for lt 60 Diode 2V 0 001 V 0 9 2 0 9 2 0 9 2 0 57 mA Notes for diode specifications 1 Overload protection 600 Vrms for short circuits with lt 0 3 A current 2 Built in buzzer beeps continuously when the voltage measured is less than 50 mV and beeps once for forward biased diode or semiconductor junctions measured between 0 3 V and 0 8 V 0 3 V lt reading lt 0 8 V 3 Open voltage for diode lt 3 V DC 4 The maximum display for diode measurements is 2100 counts U1231A U1
10. This instrument is designed for indoor use and in an area with low condensation The table below shows the general environmental requirements for this instrument Environmental condition Requirement Operating temperature Full accuracy from 10 C to 55 C Full accuracy up to 80 RH relative Operating humidity humidity for temperature up to 30 C decreasing linearly to 50 RH at 55 C Storage temperature 40 C to 60 C Altitude Up to 2000 meters Pollution degree 2 The U1231A U1232A U1233A Handheld Digital Multimeter complies with the following safety and EMC requirements e IEC 61010 1 2010 EN 61010 1 2010 e USA UL 61010 1 3rd Edition e Canada CSA C22 2 No 61010 1 2012 U1231A U1232A U1233A User s Guide Vil Regulatory Markings CE The CE mark is a registered trademark of the European Community This CE mark shows that the product complies with all the relevant European Legal N10149 The C tick mark is a registered trademark of the Spectrum Management Agency of Australia This signifies compliance with the Australia EMC Framework Cet appareil ISM est confomre a la norme NMB 001 du Canada ISMO TA Directives regulations under the terms of the Radio Communication Act of 1992 aaie This instrument complies with the LUE NEO in ates Car tie RN WEEE Directive 2002 96 EC marking device complies with the Canadian requirement This affixed product label ICES NMB 001 ICES 001 i indicat
11. U1232A laux e U1231A mx Use this Setup item to enable AC DC mV measurements You are recommended to use the AC DC mV measurements to precisely measure low voltages Parameter Range Default setting mV on or oFF oFF When this Setup item is enabled the original functions of the rotary switch positions shown above are disabled and replaced by AC DC mV measurements For AC DC mV measurements the measurement range is fixed at 600 mV and the input impedance is typically 10 MQ Press G4 to switch between DC mV AC mV and frequency measurements Press Y i Press A on Figure 4 15 Enable the AC DC mV measurement U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Enable open continuity test by default This setting is used with continuity tests see page 41 Enable this option for the beeper to sound and the backlight to flash as a continuity indication when the circuit under test is more than or equal to open the threshold resistance Use this Setup item to enable the open continuity tests During continuity tests press to switch between resistance measurement short continuity test tJ or open continuity test Fl Parameter Range Default setting oPn oPn d or oPn E oPn d _oPnd Press j Press A aati Orne Figure 4 16 Enable open continuity test by default Changing the temperature unit This setting
12. U1232A U1233A Handheld Digital Multimeter User s Guide 3 Multimeter Features Detecting AC Voltage Presence Vsense 66 Making Relative Measurements Null 68 Capturing Maximum and Minimum Values MaxMin 70 Freezing the Display Trig Hold Log and Auto Hold Log 72 Trig Hold Log operation 72 Auto Hold Log operation 72 Recalling Previously Recorded Readings Recall 74 Making Scale Transfers Scale 76 The chapter describes the additional features available in your multimeter 3 Multimeter Features Detecting AC Voltage Presence Vsense Detecting AC Voltage Presence Vsense The Vsense detector is a non contact voltage detector for U1233A model only that detects the presence of AC voltages nearby You are advised to test on a known live circuit within the rated AC voltage range of this product before and after each use to ensure that the Vsense detector works Voltage could still be present even if there is no Vsense alert indication Do not rely on Vsense detector with shielded wire Never touch live voltage or conductor without the necessary insulation protection or power off the voltage source The Vsense detector may be affected by differences in socket design insulation thickness and insulation type CAUTION You are advised to measure voltage by using test leads through the VZ ow AC V or DC V function after using the Vsense function even if there is no alert indication Press and hold for more t
13. backlight backlight only tone or beeper only or to disable the alerts Parameter Range Default setting 1 bE bL bL to nE or bE bE bL Press W i Press A h a gt gt gt J an Figure 4 11 Changing the continuity test alerts U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Changing the power on greeting tone The multimeter plays a short greeting tone each time it is powered up Use this Setup item to change the greeting tone either melody user or beep or to disable the greeting tone off Parameter Range Default setting m elody MELo USEr bEEE or oF F MELo Figure 4 12 Changing the power on greeting tone U1231A U1232A U1233A User s Guide 95 4 Multimeter Setup Options Setup Menu Items Resetting the Setup items The Setup items can be reset to their default values through this Setup item Select rESY and press to perform the reset The multimeter will beep once and return to the first Setup item Parameter Range Default setting rSt rES n or rES Y rES n r E Sn COLI roe oa Figure 4 13 Resetting the Setup items Changing the scale conversion value This setting is used with the Scale function see page 76 You can choose to set the scale conversion value from seven different selections Use this Set
14. document or of any information contained herein Should Key sight and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the separate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend U S Government Restricted Rights Soft ware and technical data rights granted to the federal government include only those rights customarily provided to end user cus tomers Keysight provides this customary commercial license in Software and techni cal data pursuant to FAR 12 211 Technical Data and 12 212 Computer Software and for the Department of Defense DFARS 252 227 7015 Technical Data Commercial Items and DFARS 227 7202 3 Rights in Commercial Computer Software or Com puter Software Documentation Safety Notices CAUTION A CAUTION notice denotes a haz ard It calls attention to an operat ing procedure practice or the likes of that if not correctly performed or adhered to could result in dam age to the product or loss of impor tant data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice o
15. gw 0 1V 2 0 3 4 0 3 Notes for true rms AC voltage specifications 1 Overload protection 600 Vrms For millivolt measurements 600 Vrms for short circuits with lt 0 3 A current 2 Input impedance 10 MQ nominal in parallel with lt 100 pF 3 VZ ow input impedance 3 kQ nominal 60 pal 0 01 uA 1 5 3 lt 2 5 V 600 pA 0 1 uA 1 5 3 lt 2 5V Current 6 ABIES 0 001 A 1 5 3 3 lt 0 2 V 10 ABIA 0 01 A 1 5 3 a lt 0 4 V Notes for AC current specifications AC current measurement not available for U1231A model Overload protection for 60 uA to 600 uA range 600 Vrms for short circuits with lt 0 3 A current Overload protection for 6 A to 10 A range 11 A 1000 V 10 x 38 mm fast acting fuse Specification for 10 A range 10 A continuous Add 0 3 to the specified accuracy when measuring signals gt 10 A to 20 A for 30 seconds maximum After measuring currents gt 10 A cool down the multimeter for twice the duration of the measured time before proceeding with low current measurements 5 AC current between 0 6 mA and 300 mA is not measureable on the U1232A and U1233A models Pwd U1231A U1232A U1233A User s Guide 109 5 Characteristics and Specifications Electrical Specifications Capacitance specifications Table 5 3 Capacitance specifications Accuracy 3 Measuring rate Range Resolution U1231A U1232A U1233A at full scale 1000 nF 1 nF 1 9 2 1 9 2 1 9 2 10 uF 0 01 uF 1 9 2 1 9
16. operation To freeze the display for any function press the key Ya Hold ENN m Ae SL a ARO Mnbominninnininn am Figure 3 5 Trig Hold Log display Press Gs again to automatically update the display to reflect data that was acquired during the hold The H annunciator will flash while attempting to acquire a stable reading Press and hold Gg for more than 1 second to exit this mode Auto Hold Log operation Pressing the for more that 1 second activates the Auto Hold Log function 72 U1231A U1232A U1233A User s Guide Multimeter Features 3 Freezing the Display Trig Hold Log and Auto Hold Log autob m 1 it it Nas ARO nimiin ss Figure 3 6 Auto Hold Log display The Auto Hold Log operation monitors the input signal and updates the display and if enabled emits a beep whenever a new stable measurement is detected The multimeter is ready to update the display once the variation of the reading exceed the setting of the variation count The autokt annunciator will flash while attempting to acquire a stable reading Press and hold for more than 1 second to exit this mode Changing the default Auto Hold Log variation count 1 Press and hold while powering on the multimeter to enter the Setup menu 2 Ensure that the auo annunciator is shown on the display 3 Press t or to edit the variation count value shown on the display 4 Press to save the changes Press
17. temperature 4 Touch the surface to be measured with the thermocouple probe and read the display A ate LIS APO ose A Figure 2 21 Temperature measurement without ambient compensation U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring AC or DC Current Measuring AC or DC Current Set up your multimeter to measure AC or DC current as shown in Figure 2 24 and Figure 2 25 Probe the test points and read the display WARNING Never attempt an in circuit current measurement where the open circuit potential to earth is greater than 1000 V Doing so will cause damage to the multimeter and possible electric shock or personal injury CAUTION To avoid possible damage to the multimeter or to the equipment under test Check the multimeter s fuses before measuring current Use the proper terminals function and range for your measurement Never place the probes across in parallel with any circuit or component when the leads are plugged into the current terminals U1231A U1232A U1233A User s Guide To measure current you must open the circuit under test then place the multimeter in series with the circuit Insert the black test lead into the COM terminal Insert the red test lead in an input appropriate for the measurement range Set the positive input terminal to the A terminal and set the rotary switch position to a z for currents above 600 uA Set the positive input terminal
18. the VZ ow function is declining gradually this means that the capacity of the battery under test is not enough to support regular functions Use this simple and quick test to determine if a battery has enough voltage capacity to support regular activities Prolonged use of the VZ ow function will consume the capacity of the battery under test U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring Resistance Measuring Resistance Set up your multimeter to measure resistance as shown in Figure 2 9 Probe the test points and read the display CAUTION To avoid possible damage to your multimeter or to the equipment under test disconnect the circuit power and discharge all high voltage capacitors before measuring resistance Resistance opposition to the current flow is measured by sending a small current out through the test leads to the circuit under test Because this current flows through all possible paths between the leads the resistance reading represents the total resistance of all paths between the leads Resistance is measured in ohms Q I a Va Va a Auto 0 L I I I L 600 w jannn E Figure 2 8 Resistance display Keep the following in mind when measuring resistance The test leads can add 0 1 Q to 0 2 Q of error to resistance measurements To test the leads touch the probe tips together and read the resistance of the leads To remove lead resistance from the measurement hold the test
19. to the uA terminal and set the rotary switch position to pA z for currents below 600 uA Press amp to cycle between DC current measurement AC current measurement or to measure the frequency of the AC current source See Measuring Frequency on page 62 to learn more 57 2 Making Measurements Measuring AC or DC Current EU D A eS ro ARO Wmimininnininn mT Figure 2 22 DC current display E NN Jm UII MS Ou CID inunituoisusitoiunitid Figure 2 23 AC current display Reversing the leads will produce a negative reading but will not damage the multimeter Placing the probes across in parallel with a powered circuit when a CAUTION ne lead is plugged into a current terminal can damage the circuit you are testing and blow the multimeter s fuse This happens because the resistance through the multimeter s current terminals is very low resulting in a short circuit 58 U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring AC or DC Current Voltage source Figure 2 24 Measuring DC AC current up to A U1231A U1232A U1233A User s Guide 59 2 Making Measurements Measuring AC or DC Current Voltage source Figure 2 25 Measuring AC DC current up to uA U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring AC or DC Current Using the uA function to measure flame rectification circuits The multimeter s uA measurement function
20. you are unable to search for the respective DoC please contact your local Keysight representative X U1231A U1232A U1233A User s Guide Table of Contents U1231A U1232A U1233A User s Guide 1 Introduction 1 About This Manual 2 Documentation map 2 Safety notes 2 Preparing Your Multimeter 3 Checking the shipment 3 Installing the batteries 3 Turning on your multimeter 6 Automatic Power Off APO 6 Enabling the backlight 7 Enabling the flashlight 7 Selecting the range 9 Alerts and warnings during measurement 10 Adjusting the tiltstand 11 Connecting the IR USB cable 11 Power on options 13 Your Multimeter in Brief 15 Dimensions 15 Overview 17 Rotary switch 19 Keypad 22 Display screen 24 Input terminals 28 Cleaning Your Multimeter 30 Making Measurements 31 Measuring AC Voltage 32 Measuring DC Voltage 34 Xl XII Measuring AC DC mV 34 Using VZ ow for Voltage Measurements 36 Measuring Resistance 39 Testing for Continuity 41 Testing Diodes 45 Measuring Capacitance 49 Measuring Temperature 51 Measuring AC or DC Current 57 Measuring Frequency 62 Multimeter Features 65 Detecting AC Voltage Presence Vsense 66 Making Relative Measurements Null 68 Capturing Maximum and Minimum Values MaxMin 70 Freezing the Display Trig Hold Log and Auto Hold Log 72 Trig Hold Log operation 72 Auto Hold Log operation 72 Recalling Previously Recorded Readings Recall 74 Making Scale Transfers Scale 76 Multi
21. 0 n nano 1E 09 0 000000001 micro 1E 06 0 000001 m milli 1E 03 0 001 mV V Voltage units for voltage measurement A yA Ampere units for current measurement nF uF mF Farad units for capacitance measurement Q KQO MQ Ohm units for resistance measurement MHz kHz Hz Hertz units for frequency measurement C Degree Celsius unit for temperature measurement F Degree Fahrenheit unit for temperature measurement U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Analog bar graph The analog bar emulates the needle on an analog multimeter without displaying the overshoot When measuring peak or null adjustments and viewing fast changing inputs the bar graph provides a useful indication because it has a faster updating rate to cater for fast response applications For example when frequency is displayed on the primary display during voltage or current measurement the bar graph represents the voltage or current value not the frequency value The sign indicates whether the measured or calculated value negative Each segment represents 33 34 or 200 counts depending on the range indicated on the peak bar graph Table 1 9 Analog bar graph display Range Counts Used for the Segments function 33 34 A JF 0 Li Li I I I 10 0 fbb hnd N 00 V A Q gt An unstable bar graph and unmatched primary display when measuring DC voltage usually means the presence
22. 00 fax 080 769 0900 Latin America tel 305 269 7500 Taiwan tel 0800047 866 fax 0800 286 331 Other Asia Pacific Countries tel 65 6375 8100 fax 65 6755 0042 Or visit the Keysight World Wide Web at www keysight com find assist Product specifications and descriptions in this document are subject to change without notice Always refer to the English version on the Keysight Web site for the latest revision This information is subject to change without notice Keysight Technologies 2011 2015 Edition 12 July 10 2015 IAT KEYSIGHT 1231 90026 TECHNOLOGIES www keysight com
23. 0v MAX 1 vat pears MAO Plug the adapter into the terminal Plug the sensor into the adapter F Ambient temperature Figure 2 20 Using the Auxillary Temperature measurement function Only applicable for the U1231A and U1232A models U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring Temperature The bead type thermocouple probe is suitable for measuring temperatures from 40 C to 204 C 399 F in PTFE compatible environments Above this temperature range the probe may emit toxic gas Do not immerse this thermocouple probe in any liquid For best results use a thermocouple probe designed for each specific application an immersion probe for liquid or gel and an air probe for air measurement Observe the following measurement techniques e Clean the surface to be measured and ensure that the probe is securely touching the surface Remember to disable the applied power e When measuring above ambient temperatures move the thermocouple along the surface until you get the highest temperature reading e When measuring below ambient temperatures move the thermocouple along the surface until you get the lowest temperature reading e Place the multimeter in the operating environment for at least 1 hour as the multimeter is using a non compensation transfer adapter with miniature thermal probe For quick measurement use the compensation to view the temperature variation of th
24. 1 0 3 1 0 3 1 0 3 45 Hz to 500 Hz 45 Hz to 500 Hz 45 Hz to 500 Hz AC 600 mV 0 1 mV 2 0 3 2 0 3 2 0 3 500 Hz to 1 kHz 500 Hz to 1 kHz 500 Hz to 1 kHz Notes for scale transfer mV specifications 1 Overload protection 600 Vrms for short circuits with lt 0 3 A current 2 The accuracy of the DC 600 mV range is specified after the Null function is used to subtract the thermal effect by shorting the test leads 3 Input impedance 10 MQ typical U1231A U1232A U1233A User s Guide 113 5 Characteristics and Specifications Electrical Specifications Display update rate approximate Table 5 9 Display update rate approximate Times second Function U1231A U1232A U1233A AC V V or mV 5 5 5 DC V V or mV 5 5 5 AC V DC V VZ gw 1 1 1 Scale transfer mV 5 5 5 Q 5 5 5 Diode 5 5 5 Capacitance 4 lt 100 uF 4 lt 100 uF 4 lt 100 uF DC A uA mA or A 5 5 AC A uA mA or A 5 5 Frequency 1 gt 10 Hz 1 gt 10 Hz 1 gt 10 Hz 114 U1231A U1232A U1233A User s Guide www keysight com Contact us To obtain service warranty or technical assistance contact us at the following phone or fax numbers United States tel 800 829 4444 fax 800 829 4433 Canada tel 877 8944414 fax 800 746 4866 China tel 800 8100189 fax 800 820 2816 Europe tel 31 20 547 2111 Japan tel 81 426 56 7832 fax 81 426 56 7840 Korea tel 080 769 08
25. 1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Table 1 7 General annunciators continued Legend Description Learn more on Tris Trigger hold enabled page 72 Autol Auto hold enabled page 72 Max Maximum reading shown on primary display Min Minimum reading shown on primary display page 70 Avg Averaged reading shown on primary display MaxMinAvg Present reading shown on primary display A Relative Null enabled page 68 H88G Primary measurement display hwinmimimininis Analog bar graph page 27 Pp Remote control enabled page 11 FC ne m VAnF Measuring units MkQHz compensadonsdected RS aaea Auto Autoranging enabled page 9 Diode test selected page 45 10600mVA Measurement range selected page 9 Audible continuity test selected page 41 Rcl Hold Log recall mode enabled page 74 U1231A U1232A U1233A User s Guide 25 1 26 Introduction Your Multimeter in Brief Table 1 7 General annunciators continued Legend Description Learn more on OOO Battery capacity indication page 5 rm Overload the reading exceeds the display E range Measurement units The available signs and notations for each measurement function in your multimeter are described in Table 1 8 The units listed below are applicable to the primary display measurements of your multimeter Table 1 8 Measurement units display Sign Notation Description M Mega 1E 06 1000000 k kilo 1E 03 100
26. 2 Scale transfer mV 113 Display update rate approximate 114 This chapter lists the characteristics assumptions and specifications of the U1231A U1232A and U1233A handheld digital multimeters 5 Characteristics and Specifications Product Characteristics Product Characteristics 102 Product characteristics specified in the table below are applicable for both U1231A U1232A and U1233A models unless stated otherwise POWER SUPPLY Battery type 4x 1 5 V AAA Alkaline battery ANSI NEDA 24A or IEC LR03 or 4x 1 5 V AAA Zinc Chloride battery ANSI NEDA 24D or IEC R03 Battery life 500 hours typical based on new Alkaline batteries 1000 mAH for DC voltage measurement with backlight and flashlight disabled e Low battery indicator will flash when the battery voltage drops below 4 4 V approximately POWER CONSUMPTION 450 mVA maximum with backlight and flashlight enabled FUSE 10 x 38 mm 11 A 1000 V fast acting fuse DISPLAY Liquid crystal display LCD with maximum reading of 6600 counts FLASHLIGHT Cool white LED 5500 K typical luminous intensity from 2240 mcd to 5600 mcd OPERATING ENVIRONMENT Operating temperature from 10 C to 55 C 0 to 80 RH e Full accuracy up to 80 RH for temperatures up to 30 C decreasing linearly to 50 RH at 55 C Altitude up to 2000 meters e Pollution degree 2 STORAGE COMPLIANCE 40 C to 60 C 0 to 80 RH without batteries SAFETY COM
27. 232A U1233A User s Guide 107 5 Characteristics and Specifications Electrical Specifications Table 5 1 DC specifications continued Test Burden Input Accuracy Function Range Resolution current voltage impedance U1231A U1232A U1233A where applicable 60 ual 0 01 uA 1 0 2 1 0 2 lt 25V 600 pA 0 1 uA 10 2 1 0 2 z lt 25 V Current 6 APIA 0 001 A 10 3 10 3 lt 0 2V 10 ARIB 0 01A 1 0 3 1 0 3 lt 0 4 V Notes for DC current specifications 1 Overload protection for 60 uA to 600 uA range 600 Vrms for short circuits with lt 0 3 A current 2 Overload protection for 6 A to 10 A range 11 A 1000 V 10 x 38 mm fast acting fuse 3 Specification for 10 A range 10 A continuous Add 0 3 to the specified accuracy when measuring signals gt 10 A to 20 A for 30 seconds maximum After measuring currents gt 10 A cool down the multimeter for twice the duration of the measured time before proceeding with low current measurements 4 DC current between 0 6 mA and 1 mA is not measureable on the U1232A and U1233A models 108 U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Electrical Specifications AC specifications Table 5 2 AC specifications Accuracy Burden voltage Function Range Resolution 45 Hz to 500 Hz 500 Hz to 1 kHz where applicable 600 mV 0 1 mV 1 0 3 2 0 3 6V 0 001 V 1 0 3 2 0 3 Voltage 60 V 0 01 V 1 0 3 2 0 3 600 V 0 1 V 1 0 3 2 0 3 600 V VZ
28. 232A U1233A User s Guide 29 1 Introduction Cleaning Your Multimeter Cleaning Your Multimeter 30 To avoid electrical shock or damage to the multimeter ensure that the insides of the casing stay dry at all times Dirt or moisture in the terminals can distort readings Follow the steps below to clean your multimeter 1 Turn the multimeter off and remove the test leads 2 Turn the multimeter over and shake out any dirt that may have accumulated in the terminals Wipe the case with a damp cloth and mild detergent do not use abrasives or solvents Wipe the contacts in each terminal with a clean swab dipped in alcohol U1231A U1232A U1233A User s Guide KEYSIGHT TECHNOLOGIES U1231A U1232A U1233A Handheld Digital Multimeter User s Guide 2 Making Measurements Measuring AC Voltage 32 Measuring DC Voltage 34 Measuring AC DC mV 34 Using VZ pw for Voltage Measurements 36 Measuring Resistance 39 Testing for Continuity 41 Testing Diodes 45 Measuring Capacitance 49 Measuring Temperature 51 Measuring AC or DC Current 57 Measuring Frequency 62 This chapter describes how to take measurements with your multimeter 2 Making Measurements Measuring AC Voltage Measuring AC Voltage Set up your multimeter to measure AC voltage as shown in Figure 2 2 Probe the test points and read the display AC voltage measurements measured with this multimeter are returned as true rms root mean square readings These readings
29. 32A a temperature module such as the U1586B purchased separately is required The approximate ambient temperature cold junction compensation is shown on the display when you have an open thermocouple The open thermocouple message may be due to a broken open probe or because no probe is installed into the input jacks of the multimeter Shorting the l terminal to the COM terminal will display the temperature at the multimeter s terminals U1231A U1232A U1233A User s Guide 51 2 52 Making Measurements Measuring Temperature CAUTION S DS o A APO oo A Figure 2 18 Temperature display Press C to change the temperature units between C or F you must first change the temperature unit from C only to C F or F C See Changing the temperature unit on page 99 for more information The option to toggle between C and F is only available for the U1233A model Always set the temperature unit display per the official requirements and in compliance with the national laws of your region U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring Temperature Heat source K type thermocouple probe Figure 2 19 Measuring the surface temperature U1231A U1232A U1233A User s Guide 53 54 Making Measurements Measuring Temperature 3 Agilent U1231A True RMS Multimetor nM Lit om cy a eed E R n v 5 lao i H aux lax CAT 60
30. A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Your Multimeter in Brief Dimensions Front view lt _ _ 86 mm Vsense XE Agilent U1233A True RMS Multimeter ASR MaxMinAvg A gt OOOD pa pe E A T eo tor E Ese shift Vsense ga O i Gia CET vopa A gt dF INON Figure 1 5 Width dimension U1231A U1232A U1233A User s Guide 1 Introduction Your Multimeter in Brief Rear and side view Figure 1 6 Height and depth dimensions 16 U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Overview Front panel The front panel parts of your multimeter are described in this section Click the respective Learn more pages in Table 1 3 for more information on each part Figure 1 7 Front panel Table 1 3 Front panel parts Legend Description Learn more on 1 Display screen page 24 2 Keypad page 22 3 Terminals page 28 4 Voltage presence indicator U1233A only page 66 5 Rotary switch page 19 U1231A U1232A U1233A User s Guide 17 1 Introduction Your Multimeter in Brief Rear panel The rear panel parts of your multimeter are described in this section Click the respective Learn more pages in Table 1 4 for more information on each part Figure 1 8 Rear panel Table 1 4 Rear panel parts Legend Description Learn more on 1 IR communication port page 11 2 Tilt stand page 11 3 Battery
31. C voltage U1231A U1232A U1233A User s Guide 35 2 Making Measurements Using VZ gy for Voltage Measurements Using VZ ow for Voltage Measurements 36 CAUTION Set up your multimeter to make a VZ ow Cow input impedance voltage measurement as shown in Figure 2 6 Probe the test points and read the display Do not use the VZ ow function to measure voltages in circuits that could be damaged by this function s low impedance 3 kQ Use the VZ gw function to remove ghost or induced voltages from your measurements Ghost voltages are voltages present on a circuit that should not be energized They are usually caused by capacitive coupling between energized wiring and adjacent unused wiring The VZ gy function can remove ghost voltages from your measurements by dissipating the coupling voltage Use the VZ ow function to reduce the possibility of false readings in areas where the presence of ghost voltages are suspected EFUU CL E E ARO Pnb m Figure 2 5 VZ ow voltage display During VZ gy measurements the multimeter s range is locked to 600 V The analog bar graph represents the AC DC voltage value combined U1231A U1232A U1233A User s Guide Making Measurements 2 Using VZ gw for Voltage Measurements Energized wiring 10a ax CATE 600V 1 a ia Figure 2 6 Measuring VZ pv voltage The multimeter will automatically identify the voltage measurement based on the following crite
32. Keysight U1231A U1232A and U1233A Handheld Digital Multimeter KEYSIGHT User s Guide TECHNOLOGIES NOTICE This document contains references to Agilent Technologies Agilent s former Test and Measurement business has become Keysight Technologies For more information goto www keysight com KEYSIGHT TECHNOLOGIES U1231A U1232A U1233A User s Guide Notices Keysight Technologies 2011 2015 No part of this manual may be reproduced in any form or by any means including elec tronic storage and retrieval or translation into a foreign language without prior agree ment and written consent from Keysight Technologies as governed by United States and international copyright laws Manual Part Number U1231 90026 Edition Edition 12 July 10 2015 Keysight Technologies 1400 Fountaingrove Parkway Santa Rosa CA 95403 Warranty The material contained in this document is provided as is and is subject to change without notice in future editions Further to the maximum extent permitted by the applicable law Keysight disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantabil ity and fitness for a particular purpose Keysight shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or performance of this
33. Multimeter Features Making Scale Transfers Scale Making Scale Transfers Scale The Scale operation emulates a transducer by helping you to convert the measured readings proportionally to the specified ratio and unit display Use Scale to transfer voltage readings to proportional readings when using clamp on current probes high voltage probes or temperature auxiliary probes The available scale conversions are shown in the table below Table 3 1 Available scale conversions Scale item Multiplier Unit Best resolution Start range 1000 V v 1000 0 v 0 1 V 600 0 V 1 C m Vb je 0 1 C 600 0 C or 1000 0 or or or 1 F mv 3 F 0 1 F 600 0 F 1 A mV 1000 0 A 0 1A 600 0A 0 1 A mV 100 0 A 0 01A 60 00 A 0 01 A mV 10 0 A 0 001 A 6 000 A 1mA mV 1 0 A 0 1mA 600 0 mA 0 1 mA mV 0 1 A 0 01 mA 60 00 mA 1 The transfer formula used is Display Multiplier x Measurement 2 The scale item is selected from the Setup menu See Changing the scale con version value on page 96 for more information 3 Dependent on temperature unit setup If C or C F is selected 1 C mV is shown as the selected scale item If F or F C is selected 1 F mV is shown as the selected scale item instead 76 U1231A U1232A U1233A User s Guide U1231A U1232A U1233A User s Guide Multimeter Features 3 Making Scale Transfers Scale Press and hold ti while powering on the multimeter to enable the Scale operation If succes
34. PLIANCE e IEC 61010 1 2010 EN 61010 1 2010 e USA UL 61010 1 3rd Edition e Canada CSA C22 2 No 61010 1 2012 U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Product Characteristics MEASUREMENT CATEGORY CAT III 600 V ELECTROMAGNETIC COMPATIBILITY EMC Commercial limits compliance with EN61326 1 TEMPERATURE COEFFICIENT 0 1 x specified accuracy C from 10 C to 18 C or 28 C to 55 C COMMON MODE REJECTION RATIO CMRR gt 100 dB at DC 50 60 Hz 1 kQ unbalanced NORMAL MODE REJECTION RATIO NMRR gt 60 dB at 50 60 Hz DIMENSIONS W x H x D 86 x 169 x 52 mm WEIGHT e U1232A and U1233A 371 grams with batteries and holster e U1231A 365 grams with batteries and holster WARRANTY Please refer to http www keysight com go warranty_terms e Three years for product Three months for product s standard accessories unless otherwise specified e Please take note that for the product the warranty does not cover Damage from contamination Normal wear and tear of mechanical components Manuals fuses and standard disposable batteries CALIBRATION CYCLE One year U1231A U1232A U1233A User s Guide 103 5 Characteristics and Specifications Specification Assumptions Specification Assumptions 104 Accuracy is given as of reading counts of least significant digit at 23 C 5 C with relative humidity less than 80 RH AC V and AC A specifications
35. Setup Menu Editing numerical values When editing numerical values first press te or a to position the cursor over the first numerical digit most right digit Next use the and Ce to move the cursor to the other numerical digit s e Press to move the cursor to the left and e Press amp 2 to move the cursor to the right When the cursor is positioned over a digit use the and Ea keys to change the numerical digit e Press i to increment the digit and e Press i to decrement the digit When you have completed your changes save the new numerical value by pressing Or alternatively if you wish to discard the changes you made press G9 U1231A U1232A U1233A User s Guide 81 4 Multimeter Setup Options Setup Menu Summary Setup Menu Summary The Setup menu items are summarized in the table below Click the respective Learn more pages in Table 4 2 for more information on each menu item Table 4 2 Setup menu item descriptions Legend Available settings Description Learn more on wel A Set the multimeter s Auto Hold Log variation count from page 72 and pon CO1 to S99 counts 1 count to 999 counts Default is 50 counts page 84 Set the display s settling value from 1 to 999 Enable the ean nngd 001 to 999 or disabled Smooth function by selecting E enabled Default is pag il LOLS d page 85 disabled 009 d Set the multimeter s voltage alert value from 1 V to woe hand nand v 001 to 660
36. al alert allows you to perform quick continuity tests without having to watch the display In continuity a short means a measured value is less that the threshold resistance values listed in Table 2 1 Table 2 1 Threshold resistance values Measuring range Threshold resistance 600 0 Q lt 23 10 Q 6 000 kQ lt 230 100 Q 60 00 kQ lt 2 3 1 kQ 600 0 kQ lt 23 10 kQ 6 000 MQ lt 131 60 kQ 60 00 MQ lt 131 60 kQ Press Gs to switch between resistance measurement short continuity test 4H or open continuity test F1 See Figure 2 10 to learn more U1231A U1232A U1233A User s Guide 41 Making Measurements Testing for Continuity Open continuity is disabled by default The open continuity test option must be enabled in the Setup menu before it can be selected via the 8 key See Enable open continuity test by default on page 99 to learn more rrr COILS ma minnini ate A Press to switch to e short continuity test rm uo Osh Short detected O 600 ww Inninmunnnnnind E beeper sounds E a Circuit open Press to switch to te open continuity test e lu m LIL Mi eoo A Press to switch to the resistance measurement i Open detected beeper sounds m rm i LAL AN 9 eh i o 0 a 600 Circuit 600 w soe complete ETD fuveinncinoninoniunninnnd poe Figure 2 10 Cont
37. and fuse access cover page 3 4 Flashlight page 7 18 U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Rotary switch The measurement functions for each rotary switch position are described in Table 1 5 on page 20 Turning the rotary switch changes the measurement function and resets all other measurement options Click the respective Learn more pages in Table 1 5 for more information on each function Some rotary switch positions have a shifted function printed in orange Press 8 to switch between the shifted and regular function See page 23 for more information on the 9 key WARNING Remove the test leads from the measuring source or target before changing the rotary switch position Each position of the U1231A U1232A and U1233A rotary switch shown in Figure 1 7 is described in Table 1 5 A list of some of the abbreviations used in Table 1 5 is given below VZ ow Low input impedance voltage measurement for eliminating ghost voltages AC V AC voltage measurement DCV DC voltage measurement AC Hz AC coupling frequency measurement AC A AC current measurement DCA DC current measurement Clamp on AC A Aux Clamp on AC auxiliary current measurement Clamp on DC A Aux Clamp on DC auxiliary current measurement AC pA AC current measurement up to microamperes DC uA DC current measurement up to microamperes U1231A U1232A U1233A User s Guide 19
38. and hold until the multimeter restarts If the reading value is unable to reach a stable state when exceeding the preset variation the reading value will not be updated U1231A U1232A U1233A User s Guide 73 3 Multimeter Features Recalling Previously Recorded Readings Recall Recalling Previously Recorded Readings Recall 74 Trig Hold Log and Auto Hold Log readings are recorded automatically for future review or analysis by default Up to a maximum of 10 records can be stored at a time The Trig Hold Log and Auto Hold Log records share the same memory space When the memory s index is full the next reading to be recorded will overwrite the last reading recorded the 10 index By default each Trig Hold Log and Auto Hold Log reading is stored temporarily in the multimeter s volatile memory All temporary records will be erased when the multimeter is turned OFF You can choose to save the temporary records in the multimeter s nonvolatile memory by pressing and holding G9 for more than 1 second Records stored through this method remains saved even when the multimeter is turned OFF or if the battery is replaced Recalling readings stored in the multimeter s memory is performed through the key 1 Press for more than 1 second to enter the Recall menu The last recorded reading is shown on the display The analog bar graph is used to indicate the record index Mi Hold PUTT Jm eT no ARO iuunv
39. are AC coupled true rms and are valid from 5 of range to 100 of range The crest factor may be up to 3 0 at full scale 4000 counts For non sinusoidal waveforms add 2 reading 2 full scale typical After VZ_ow Cow input impedance voltage measurements wait at least 20 minutes for thermal impact to cool before proceeding with any other measurement WARNING Exceeding the crest factor limit may result in an incorrect or a lower reading Do not exceed the crest factor limit to avoid instrument damage and the risk of electric shock U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Measurement Category Measurement Category The Keysight U1231A U1232A U1233A Handheld Digital Multimeters have a safety rating of CAT II 600 V Measurement category definition Measurement CAT are for measurements performed on circuits not directly connected to the AC mains Examples are measurements on circuits not derived from the AC mains and specially protected internal mains derived circuits Measurement CAT II are measurements performed on circuits directly connected to a low voltage installation Examples are measurements on household appliances portable tools and similar equipment Measurement CAT III are measurements performed in building installations Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlet
40. are accurate for sine waves and other waveforms with no DC offset such as square waves triangle waves and staircase waves E PU Jm a ee ree G00mMV AP OJ Wnimiminninninp me Figure 2 1 AC voltage display Press to measure the frequency of the AC voltage source See Measuring Frequency on page 62 to learn more 32 U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring AC Voltage Veense patton 01239A re a mimes Voltage source Figure 2 2 Measuring AC voltage U1231A U1232A U1233A User s Guide 33 2 Making Measurements Measuring DC Voltage Measuring DC Voltage Set up your multimeter to measure DC voltage as shown in Figure 2 4 Probe the test points and read the display This multimeter displays DC voltage values as well as their polarity Negative DC voltages will return a negative sign on the left of the display EF PUUrt y Jm NN U hah n ARO Wniminninnininn a Figure 2 3 DC voltage display Measuring AC DC mV You can choose to set the multimeter to measure AC or DC mV at the rotary positions shown below e U1233A e U1232A Laux e U1231A t mx Use the Setup menu to enable AC DC mV measurements See Enable the AC DC mV measurement on page 98 to learn more 34 U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring DC Voltage Veense patton 12320 roe rus meinen Voltage source ay ie Sar ae Figure 2 4 Measuring D
41. can be used to measure flame rectification circuits flame sensors down to 0 01 uA Flame sensors whether they are used in a home furnace or on a large industrial boiler indicate the presence of a flame and are part of the safety circuit These types of flame sensors use a process of flame rectification to sense that the flame is lit Typically these flame sensors must be engulfed in the burner flame to function Flame rectification uses the fact that a flame will rectify an AC voltage to DC voltage and allow the DC current to flow through a flame to detect a flame Normally an AC voltage is applied to the flame sensor with a wire coming from the ignition module When the flame sensor is engulfed by a flame the AC voltage is rectified and a DC current commonly 4 to 12 uA flows from the ignition module through the wire to the flame sensor through the flame to the ground on the furnace chassis The ignition control module has a circuit to detect the DC current and it commonly closes a relay when the DC current is detected that verifies that the burner is properly lit If the burner fails to light or is extinguished for any reason that DC current disappears and the control module takes suitable action to turn off the burner To measure flame rectification circuits 1 Set up your multimeter to measure uA measurements as shown in Figure 2 25 2 Connect the multimeter between the flame sensor probe COM terminal and the ignitio
42. e LED flashlight s intensity level either Lo 02 03 ME 05 06 or Hi Parameter Range Default setting tL Lo 02 03 ME 05 06 or Hi Hi P 8 gt Press Y p mM rr ae 2 Cae 2 om Figure 4 9 Changing the LED flashlight intensity 92 U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Changing the minimum measurable frequency This setting is used with frequency tests see page 62 Changing the minimum measurable frequency will influence the display update rates for frequency measurements The typical display update rate as defined in the specification is based on a minimum measurable frequency of 0 5 Hz Use this Setup item to adjust the minimum measurable frequency value either 0 5 Hz or 5 0 Hz Parameter Range Default setting FrEq 0 5 Hz or 5 0 Hz 0 5 Hz Frei a rr Fred wn Hz Figure 4 10 Changing the minimum measurable frequency Changing the continuity test alerts This setting is used with continuity tests see page 41 You can set the beeper to sound and the backlight to flash as a continuity indication whether the circuit under test is less than short or more than or equal to open the threshold resistance U1231A U1232A U1233A User s Guide 93 4 94 Multimeter Setup Options Setup Menu Items Use this Setup item to change the continuity test alerts either beeper and
43. e protection provided by the equipment may be impaired Never use the meter in wet conditions or when there is water on the surface If the meter is wet ensure that the meter is dried only by trained personnel Before use verify the meter s operation by measuring a known source for example voltage When measuring current turn off the circuit power before connecting the meter in the circuit Remember to place the meter in series with the circuit When servicing the meter use only the specified replacement parts Use caution when working above 60 V DC 30 V AC rms or 42 4 V peak Such voltages pose a shock hazard Do not use the VZ pw low input impedance function to measure voltages in circuits that could be damaged by this function s low input impedance of 3 kQ When using the probes keep your fingers behind the finger guards on the probes Connect the common test lead before you connect the live test lead When you disconnect the leads disconnect the live test lead first U1231A U1232A U1233A User s Guide VI Remove the test leads from the meter before you open the battery cover Do not operate the meter with the battery cover or portions of the cover removed or loosened To avoid false readings which may lead to possible electric shock or personal injury replace the battery as soon as the low battery indicator appears and flashes U1231A U1232A U1233A User s Guide Environmental Conditions
44. e thermocouple sensor The compensation assists you in measuring relative temperature immediately Changing the default temperature unit You can change the temperature unit Celsius only Celsius Fahrenheit Fahrenheit only or Fahrenheit Celsius from the Setup menu 1 Press and hold while powering on the multimeter to enter the Setup menu 2 Press and hold for more than 1 second until is shown on the display 3 Press ie or to change the default temperature unit shown on the display U1231A U1232A U1233A User s Guide 55 2 56 Making Measurements Measuring Temperature Available options C Temperature measured in C only C F During temperature measurements press Ce to switch between C and F F Temperature measured in F only F C During temperature measurements press C to switch between F and C 4 Press to save the changes Press and hold until the multimeter restarts Temperature measurement without ambient compensation If you are working in a constantly varying environment where ambient temperatures are not constant do the following 1 Press and hold for more than 1 second to select the 0 C compensation AA This allows a quick measurement of the relative temperature 2 Avoid contact between the thermocouple probe and the surface to be measured 3 After a constant reading is obtained press to set the reading as the relative reference
45. ed measured null value and the input signal One possible application is to increase the accuracy of a resistance measurement by nulling the test lead resistance Nulling the leads is also particularly important prior to making capacitance measurements Null can be set for both auto and manual range settings but not in the case of an overload 1 To activate the relative mode press the key The measurement value at the time when Null A is enabled is stored as the reference value Figure 3 2 Null display 2 Press again to view the stored reference value The display will return to normal after 3 seconds 3 To disable the Null function press while the stored reference value is shown step 2 For any measurement function you can directly measure and store the null value by pressing with the test leads open nulls the test lead capacitance shorted nulls the test lead resistance or across a desired null value circuit U1231A U1232A U1233A User s Guide Multimeter Features 3 Making Relative Measurements Null e In resistance measurement the multimeter will read a non zero value even when the two test leads are in direct contact because of the resistance of these leads Use the Null function to zero adjust the display For DC voltage measurements the thermal effect will influence the accuracy of the measurements Short the test leads and press when the displayed value is stable to zero adjust the display
46. es that you must not discard this electrical or electronic product in domestic household waste The CSA mark is a registered trademark of the Canadian Standards Association 40 This symbol indicates the time period during which no hazardous or toxic substance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product Vill U1231A U1232A U1233A User s Guide Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC This instrument complies with the WEEE Directive 2002 96 EC marking requirement This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE directive Annex 1 this instrument is classified as a Monitoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service Center or visit www keysight com environment product for more information U1231A U1232A U1233A User s Guide IX Declaration of Conformity DoC The Declaration of Conformity DoC for this instrument is available on the Keysight Web site You can search the DoC by its product model or description at the Web address below http www keysight com go conformity If
47. eter More pertinent safety notes for using this product are located under the Safety Considerations section Do not proceed beyond a safety notice until the indicated conditions are fully understood and met U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter Preparing Your Multimeter Checking the shipment When you receive your multimeter check the shipment according to the following procedure 1 Inspect the shipping container for damage Signs of damage may include a dented or torn shipping container or cushioning material that indicates signs of unusual stress or compacting Save the packaging material in case the multimeter needs to be returned Carefully remove the contents from the shipping container and verify that the standard accessories and your ordered options are included in the shipment according to the standard shipped items list found in the printed copy of the U1231A U1232A U1233A Quick Start Guide For any question or problems refer to the Keysight contact numbers on the back of this manual Installing the batteries Your multimeter is powered by four 1 5 V AAA alkaline batteries included with the shipment When you receive your multimeter the AAA alkaline batteries are not installed Use the following procedure to install the batteries Before you proceed with the batteries installation remove all cable CAUTION a connections to the terminals and ensure tha
48. functions 22 Table 1 7 General annunciators 24 Table 1 8 Measurement units display 26 Table 1 9 Analog bar graph display 27 Table 1 10 U1231A terminal connections for different measuring functions 28 Table 1 11 U1232A and U1233A terminal connections for different measuring functions 29 Table 2 1 Threshold resistance values 41 Table 2 2 Functions allowing frequency measurement 62 Table 3 1 Available scale conversions 76 Table 4 1 Setup menu key functions 80 Table 4 2 Setup menu item descriptions 82 Table 5 1 DC specifications 106 Table 5 2 AC specifications 109 Table 5 3 Capacitance specifications 110 Table 5 4 Temperature specifications 111 Table 5 5 Frequency specifications 112 Table 5 6 Frequency sensitivity and trigger level specifications for voltage measurements 112 Table 5 7 Frequency sensitivity and trigger level specifications for current measurements 113 Table 5 8 Scale transfer mV specifications 113 Table 5 9 Display update rate approximate 114 U1231A U1232A U1233A User s Guide XVII THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK XVIII U1231A U1232A U1233A User s Guide KEYSIGHT TECHNOLOGIES U1231A U1232A U1233A Handheld Digital Multimeter User s Guide 1 Introduction About This Manual 2 Documentation map 2 Safety notes 2 Preparing Your Multimeter 3 Checking the shipment 3 Installing the batteries 3 Turning on your multimeter 6 Automatic Power Off APO 6 Enabling the backlight 7 Enabling t
49. ging the auto power off APO timeout The multimeter s automatic power off see page 6 function uses a timer to determine when to automatically turn the multimeter off Use this Setup item to enable or disable the auto power off function and to change its timeout period from 1 to 99 minutes Parameter Range Default setting 15 E minutes A PO 01 to 99 d or E minutes enabled E Press Y Press A f Press gt Press gt m m s Press lt Press lt i Press Y Press A Press Y Press A a n pam E a n D APO Press Y t Press A i te 39 f OE f HE f pam Figure 4 5 Changing the auto power off timeout U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Changing the LCD backlight timeout The multimeter s LCD backlight see page 7 uses a timer to determine when to turn off the LCD backlight Use this Setup item to adjust the LCD backlight timeout and to change its timeout period from 1 to 99 seconds Parameter Range Default setting 15 E seconds b acklight 01 to 99 d or E seconds enabled o re J oD b ISE bISE b SSE ed a muv frma bE b Sd Ea 4 possa bO iE Figure 4 6 Changing the LCD backlight timeout U1231A U1232A U1233A User s Guide 89 90 4 Multimeter Setup Options Se
50. han 1 second to enable the Vsense function on any position of the rotary switch except OFF If the presence of AC voltage is sensed the multimeter s beeper will sound and the Vsense red LED at the top of the multimeter will turn on The audible and visual alert allows you to easily sense nearby AC voltage presence No resolution and accuracy of voltage measurement will be displayed in this mode Press to toggle the Vsense detector s sensitivity between H SE high sensitivity or LoSE low sensitivity U1231A U1232A U1233A User s Guide Multimeter Features 3 Detecting AC Voltage Presence Vsense NOTE Place the top of the multimeter with the Vsense indicator close to a conductor when sensing for AC voltages as low as 24 V in the Hi SE setting The low sensitivity setting can be used on flush mounted wall sockets or outlets and various power strips or cords e The high sensitivity setting allows for AC voltage sensing on other styles of recessed power connectors or sockets where the actual AC voltage is recessed within the connector itself Og Voltage source Figure 3 1 Detecting voltage presence Press and hold for more than 1 second to disable the Vsense function U1231A U1232A U1233A User s Guide 67 3 Multimeter Features Making Relative Measurements Null Making Relative Measurements Null When making Null measurements also called relative each reading is the difference between a stor
51. he flashlight 7 Selecting the range 9 Alerts and warnings during measurement 10 Adjusting the tilt stand 11 Connecting the IR USB cable 11 Power on options 13 Your Multimeter in Brief 15 Dimensions 15 Overview 17 Rotary switch 19 Keypad 22 Display screen 24 Input terminals 28 Cleaning Your Multimeter 30 This chapter teaches you how to set up your multimeter for the first time An introduction to all the features of the multimeter is also given 1 Introduction About This Manual About This Manual The descriptions and instructions in this manual apply to the Keysight U1231A U1232A and U1233A handheld digital multimeters hereafter referred to as the multimeter The model U1233A appears in all illustrations Documentation map Safety notes The following manuals and software are available for your multimeter For the very latest version please visit our website at http www keysight com find hhTechLib Check the manual revision on the first page of each manual e User s Guide This manual e Quick Start Guide Printed copy for outdoor use included with shipment e Service Guide Free download at the Keysight website Keysight GUI Data Logger Software Help and Quick Start Guide Free download at the Keysight website Safety notes are used throughout this manual see the Safety Notices section for format examples Familiarize yourself with each of the notes and its meaning before operating your multim
52. he multimeter between manual and autoranging It also cycles through the available multimeter ranges when manual ranging is enabled Autoranging is convenient because the multimeter automatically selects an appropriate range for sensing and displaying each measurement However manual ranging results in better performance since the multimeter does not have to determine which range to use for each measurement The range is fixed for diode tests temperature VZ gy and AC DC mV measurements In autorange the multimeter selects the lowest range to display the highest available precision resolution for the input signal If manual range is already enabled press for more than 1 second to enter the autoranging mode If autoranging is enabled press to enter the manual range mode Each additional press of sets the multimeter to the next higher range unless it is already in the highest range at which point the range switches to the lowest range U1231A U1232A U1233A User s Guide 9 1 10 Introduction Preparing Your Multimeter Alerts and warnings during measurement Voltage alert For your own safety please do not ignore the voltage alert When the multimeter cautions you with a voltage alert you are advised to take note of the existence of high voltage and pay closer attention when performing measurements Your multimeter provides a voltage alert for voltage measurements in both autoranging and manual ra
53. imeter Setup Options starting on page 79 for more information Press and hold for more than 1 second to exit this mode Enables Smooth until the multimeter is turned off Recall lt To permanently enable Smooth see Enabling and changing the Smooth refresh rate on page 85 Tests the LCD All annunciators are displayed in the LCD Press any key to exit this mode Checks the firmware version v pe dip cis sle o The multimeter s firmware version will be shown on the primary display Press any key to exit this mode U1231A U1232A U1233A User s Guide 13 1 14 Introduction Preparing Your Multimeter Table 1 2 Power on options continued Key Description Enables Scale until the multimeter is turned off To learn more about Scale see Making Scale Transfers Scale on page 76 Activates the LED flashlight without multimeter operation Press i or to adjust the LED flashlight s intensity level either Lo 02 03 ME 05 06 or Hi Press to save your changes or press to discard your changes e Press or to cycle between the flashlight s HELP mode dEMo mode or flashlight mode To learn more about these modes see HELP and dEMo modes on page 8 Press and hold for more than 1 second to toggle the flashlight on or off for any of the modes HELP dEMo or flashlight mode Press and hold G4 for more than 1 second to exit this mode U1231
54. inuity test flow U1231A U1232A U1233A User s Guide Making Measurements 2 Testing for Continuity You can set the beeper to sound and the backlight to flash as a continuity indication whether the circuit under test is less than short or more than or equal to open the threshold resistance e The continuity function detects intermittent shorts and opens lasting as short as 1 ms A brief short or open causes the multimeter to emit a short beep and flash You can enable or disable the audible and visual alert via the Setup menu See Changing the continuity test alerts on page 93 for more information on the audible and visual alert options U1231A U1232A U1233A User s Guide 43 2 44 Making Measurements Testing for Continuity Veense teen 1204 rem mn nn bese Q fias closed ato se e Be Snir Vsense Figure 2 11 Testing for continuity U1231A U1232A U1233A User s Guide Testing Diodes CAUTION Making Measurements 2 Testing Diodes Set up your multimeter to test diodes as shown in Figure 2 14 Probe the test points and read the display To avoid possible damage to your multimeter or to the equipment under test disconnect the circuit power and discharge all high voltage capacitors before testing diodes e Use the diode test to check diodes transistors silicon controlled rectifiers SCRs and other semiconductor devices A good diode allows current to flow in one direc
55. is used with temperature measurements see page 51 Four combinations of displayed temperature unit s are available e Celsius only Temperature measured in C e Celsius Fahrenheit During temperature measurements press g to switch between C and F U1231A U1232A U1233A User s Guide 99 4 Multimeter Setup Options Setup Menu Items e Fahrenheit only Temperature measured in F e Fahrenheit Celsius During temperature measurements press C to switch between F and C Use this Setup item to change the default temperature unit for temperature measurements Press and hold for more than 1 second to enter this Setup item Parameter Range Default setting C C C F F or F C C CAUTION Always set the temperature unit display per the official requirements and in compliance with the national laws of your region mv hea L oO Ha Figure 4 17 Changing the temperature unit 100 U1231A U1232A U1233A User s Guide KEYSIGHT TECHNOLOGIES U1231A U1232A U1233A Handheld Digital Multimeter User s Guide 5 Characteristics and Specifications Product Characteristics 102 Specification Assumptions 104 Measurement Category 105 Measurement category definition 105 Electrical Specifications 106 DC specifications 106 AC specifications 109 Capacitance specifications 110 Temperature specifications 111 Frequency specifications 112 Frequency sensitivity specifications 11
56. itance e Use the proper terminals function and range for your measurements e This device is for use at altitudes of up to 2 000 m e Never measure voltage when current measurement is selected e Always use the specified battery type The power for the meter is supplied with four standard AAA 1 5 V batteries Observe the correct polarity markings before you insert the batteries to ensure proper insertion of the batteries in the meter e You are advised to use low leakage batteries when changing to new batteries Please remember to remove the batteries when the meter is not in use for a long period of time Warning on the risk of battery leakage Do not exceed any of the measurement limits defined in the specifications to avoid instrument damage and the risk of electric shock Do not use the meter if it is damaged Before you use the meter inspect the case Look for cracks or missing plastic Pay particular attention to the insulation surrounding the connectors U1231A U1232A U1233A User s Guide Inspect the test leads for damaged insulation or exposed metal Check the test leads for continuity Replace damaged test leads before you use the meter Do not operate the meter around explosive gas vapor or wet environments Do not apply more than the rated voltage as marked on the meter between terminals or between terminal and earth ground If the equipment is used in a manner not specified by the manufacturer th
57. lead tips together and press 4 Now the resistance at the probe tips will be subtracted from all future display readings U1231A U1232A U1233A User s Guide 39 2 40 Making Measurements Measuring Resistance e Because the multimeter s test current flows through all possible paths between the probe tips the measured value of a resistor in a circuit is often different from the resistor s rated value The resistance function can produce enough voltage to forward bias silicon diodes or transistor junctions causing them to conduct If this is suspected press C to apply a lower current in the next higher range Veense 4 Agilent N A Resistor yk ghee ecco CAT iN 600V MAX me KAREN e ING Figure 2 9 Measuring resistance U1231A U1232A U1233A User s Guide Making Measurements 2 Testing for Continuity Testing for Continuity Set up your multimeter to test for continuity as shown in Figure 2 11 Probe the test points and read the display CAUTION To avoid possible damage to your multimeter or to the equipment under test disconnect the circuit power and discharge all high voltage capacitors before testing for continuity Continuity is the presence of a complete path for current flow The continuity test features a beeper that sounds and a backlight that flashes as long as a circuit is complete if short continuity is selected or broken if open continuity is selected The audible and visu
58. ling the batteries 4 Figure 1 2 Powering onthe multimeter 6 Figure 1 3 Tilt stand adjustment and IR USB cable connection 11 Figure 1 4 Keysight GUI Data Logger Software 12 Figure 1 5 Widthdimension 15 Figure 1 6 Height and depth dimensions 16 Figure 1 7 Frontpanel 17 Figure 1 8 Rearpanel 18 Figure 2 1 AC voltage display 32 Figure 2 2 Measuring AC voltage 33 Figure 2 3 DC voltage display 34 Figure 2 4 Measuring DC voltage 35 Figure 2 5 VZ ow voltage display 36 Figure 2 6 Measuring VZ gw voltage 37 Figure 2 7 WZ gw auto identification flow 38 Figure 2 8 Resistance display 39 Figure 2 9 Measuring resistance 40 Figure 2 10 Continuity test flow 42 Figure 2 11 Testing for continuity 44 Figure 2 12 Diode display 45 Figure 2 13 Open diode display 46 Figure 2 14 Testing forward bias diode 47 Figure 2 15 Testing reverse bias diode 48 Figure 2 16 Capacitance display 49 Figure 2 17 Measuring capacitance 50 Figure 2 18 Temperature display 52 Figure 2 19 Measuring the surface temperature 53 Figure 2 20 Using the Auxillary Temperature measurement function Only applicable for the U1231A and U1232A models 54 Figure 2 21 Temperature measurement without ambient compensation 56 Figure 2 22 DC current display 58 Figure 2 23 AC current display 58 Figure 2 24 Measuring DC AC current up to A 59 U1231A U1232A U1233A User s Guide XV Figure 2 25 Measuring AC DC current up to pA 60 Figure 2 26 Frequency definition 63 Fig
59. ll function is used to reduce the test lead s thermal effect and temperature offset Before using the Null function set the multimeter to measure temperature without ambient compensation j and keep the thermocouple probe as close to the multimeter as possible avoid contact with any surface that has a different temperature from the ambient temperature 5 When measuring temperature with respect to any temperature calibrator try to set both the calibrator and multimeter with an external reference without internal ambient compensation If both the calibrator and multimeter are set with internal reference with internal ambient compensation some deviations may show between the readings of the calibrator and multimeter due to differences in ambient compensation between the calibrator and multimeter Keeping the multimeter close to the output terminal of calibrator will help reduce the deviation 6 The temperature calculation is specified according to the safety standards of EN IEC 60548 1 and NIST175 U1231A U1232A U1233A User s Guide 111 5 Characteristics and Specifications Electrical Specifications Frequency specifications Table 5 5 Frequency specifications Accuracy Minimum input Range Resolution U1231A U1232A U1233A frequency 99 99 Hz 0 01 Hz 0 1 2 0 1 2 0 1 2 999 9 Hz 0 1 Hz 0 1 2 0 1 2 0 1 2 5 Hz 9 999 kHz 0 001 kHz 0 1 2 0 1 2 0 1 2 99 99 kHz 0 01 kHz 0 1 2 0 1 2 0 1 2 Notes for frequency
60. ls how long the backlight stays on The default timeout is 15 seconds To change the timeout period or completely disable the backlight timeout refer to Changing the LCD backlight timeout on page 89 You can also adjust the backlight s intensity to conserve battery life The default intensity is high To change the backlight s intensity level refer to Adjusting the LCD backlight intensity on page 90 Enabling the flashlight If you are using the multimeter in dark places press and hold s for more than 1 second to activate the LED flashlight for greater visibility on your test points Press i for more than 1 second to deactivate the LED flashlight CAUTION VISION ADVISORY CLAIM The LED light source is safe for normal usage However staring directly into the LED light source is not recommended as prolonged direct exposure may be harmful to the eyes U1231A U1232A U1233A User s Guide 7 1 Introduction Preparing Your Multimeter To conserve battery life a user adjustable timeout can be set to control how long the flashlight stays on To set a timeout period refer to Enabling the LED flashlight timeout on page 91 You can also adjust the flashlight s intensity to conserve battery life The default intensity is high To change the flashlight s intensity level refer to Adjusting the LED flashlight intensity on page 92 Use the power on option hold while powering on the multimeter t
61. mary Table 4 2 Setup menu item descriptions continued 4 Legend Available settings Description Learn more on be bL or bE AE g MELo USEr bEEE or oF F rE5 rES n or rESY ba 1000 A V 1000 C F V nnn a OON 1000 v v 100 A V 10 A V 1 A V or 0 1 A V oF F on or oF F oPn d or oPn E oPnd or C C F F or F C bE bL bL to nE Enable or disable the continuity test alerts beeping sound and or flashing backlight Default is enabled for both beeper and backlight bE bL Change or disable the power on greeting tone melody user beep or off Default is melody MELo Reset the multimeter to its factory default settings Default is no rES n Set the scale conversion value Default is 1000 A V Set the multimeter to measure AC or DC mV at the rotary positions shown below Default is off U1233A e U1232A at J aux U1231A t mx Enable or disable the open continuity test Default is disabled oPn d Set the multimeter s temperature unit Celsius Celsius Fahrenheit Fahrenheit Fahrenheit Celsius Default is C Celsius page 41 and page 93 page 5 and page 95 page 96 page 76 and page 96 page 34 and page 98 page 41 and page 99 page 51 and page 99 U1231A U1232A U1233A User s Guide 83 4 Multimeter Setup Options Setup Menu Items Setup Menu Items Changing the variation count This
62. meter Setup Options 79 Using the Setup Menu 80 Editing numerical values 81 Setup Menu Summary 82 Setup Menu Items 84 Changing the variation count 84 Enabling and changing the Smooth refresh rate 85 U1231A U1232A U1233A User s Guide 5 Characteristics and Specifications Product Characteristics Specification Assumptions Measurement Category Electrical Specifications U1231A U1232A U1233A User s Guide Enabling and changing the voltage alert level 86 Changing the beep frequency 87 Changing the auto power off APO timeout 88 Changing the LCD backlight timeout 89 Adjusting the LCD backlight intensity 90 Enabling the LED flashlight timeout 91 Adjusting the LED flashlight intensity 92 Changing the minimum measurable frequency Changing the continuity test alerts 93 Changing the power on greeting tone 95 Resetting the Setup items 96 Changing the scale conversion value 96 Enable the AC DC mV measurement 98 Enable open continuity test by default 99 Changing the temperature unit 99 93 101 102 104 105 Measurement category definition 106 DC specifications 106 AC specifications 109 Capacitance specifications Temperature specifications 111 Frequency specifications 112 Frequency sensitivity specifications Scale transfer mV 113 Display update rate approximate 105 110 112 114 XIII THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK XIV U1231A U1232A U1233A User s Guide List of Figures Figure 1 1 Instal
63. n control module uA terminal 3 Probe the test points and read the display U1231A U1232A U1233A User s Guide 61 2 Making Measurements Measuring Frequency Measuring Frequency Your multimeter allows simultaneous monitoring of real time voltage or current with frequency measurements Table 2 2 highlights the functions allowing frequency measurements in your multimeter Table 2 2 Functions allowing frequency measurement Legend U1233A U1232A U1231A VHz VHz VHz Aw Hz Aw Hz aux A Hz A Hz Never measure the frequency where the voltage or current level exceeds the specified range Manually set the voltage or current range if you want to measure frequencies below 20 Hz 62 Measuring the frequency of a signal helps detect the presence of harmonic currents in neutral conductors and determines whether these neutral currents are the result of unbalanced phases or non linear loads Frequency is the number of cycles a signal completes each second Frequency is defined as 1 Period Period is defined as the time between the middle threshold crossings of two consecutive like polarity edges as shown in Figure 2 26 The multimeter measures the frequency of a voltage or current signal by counting the number of times the signal crosses a threshold level within a specified period of time U1231A U1232A U1233A User s Guide Making Measurements 2 Measuring Frequency Rise Time Fall Time
64. nge modes The multimeter starts beeping periodically once the measured voltage exceeds the alert value regardless of polarity set in the Setup menu By default this feature is turned off Be sure to set the alert voltage according to your test requirements To change the alert voltage level refer to Enabling and changing the voltage alert level on page 86 Hazardous voltage indication The multimeter will also display the hazardous voltage 4 symbol as an early precaution when the measured voltage is equal to or greater than 30 V in all voltage measurement modes U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter Adjusting the tilt stand To adjust the multimeter to a 60 standing position pull the tilt stand outward as shown in Figure 1 3 To PC host IR USB cable Tilt stand Pull until 60 standing position Figure 1 3 Tilt stand adjustment and IR USB cable connection Connecting the IR USB cable You can use the IR communication link IR communication port located at the rear panel and the Keysight GUI Data Logger software to control your multimeter remotely perform data logging operations and transfer the contents of your multimeter s memory to a PC U1231A U1232A U1233A User s Guide 11 1 12 Introduction Preparing Your Multimeter Ensure that the Keysight logo on the U1173A IR USB cable purchased separately connected to the multimeter is facing up Firmly
65. nly Enables the non contact orange on the rotary switch function if voltage presence indicator Press G9 for page 66 available Press again to switch back more than 1 second to exit this mode to the regular measurement function U1231A U1232A U1233A User s Guide 23 1 24 Introduction Your Multimeter in Brief Display screen The display annunciators of your multimeter are described in this section See also Measurement units on page 26 for a list of available measurement signs and notations and Analog bar graph on page 27 for a tutorial on the analog bar graph located at the bottom of your display screen General display annunciators The general display annunciators of your multimeter are described in the table below Click the respective Learn more pages in Table 1 7 for more information on each annunciator Table 1 7 General annunciators Legend Description Learn more on Low impedance measurement enabled page 36 Hazardous voltage sign for measuring voltage h gt 30 V or overload pageto DC direct current and AC alternating current indication e Capacitor is charging during capacitance Fl measurement Open continuity test page 49 and e Capacitor is discharging during page 41 u capacitance measurement Short continuity test Cal Calibration enabled Scale Scale transfer enabled page 76 aygmecth Smooth mode enabled page 85 APO APO Auto Power Off enabled page 6 U
66. o enable the flashlight without multimeter operation In this mode you can adjust the flashlight intensity using the or keys as well as cycle between the HELP mode dEMo mode or flashlight mode using the or C keys To learn more see HELP and dEMo modes on page 8 and Power on options on page 13 HELP and dEMo modes The HELP and dEMo modes can be enabled through the power on options see page 13 1 While in the flashlight power on mode press or Cae until HELP is shown to enable the HELP mode When the HELP mode is enabled the multimeter flashes the international Morse code distress signal repeatedly Use this option to send a visual alert or notification of a distress in progress 2 While in the flashlight power on mode press or Sue until dEpa is shown to enable the dEMo mode When the dEMo mode is enabled the multimeter demonstrates the flashlight and beeper abilities by flashing the flashlight repeatedly accompanied by a melody tone 3 Press or Ce to cycle between the HELP dEMo or flashlight mode Press and hold EA for more than 1 second to toggle the flashlight on or off for any of the modes HELP dEMo or flashlight mode U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter Selecting the range The multimeter s selected range is always displayed above the right hand end of the bar graph as the range indicator Pressing C switches t
67. of AC voltages in the circuit 1 The analog bar graph display update rate is approximately 33 times second for DC voltage current and resistance measurements U1231A U1232A U1233A User s Guide 27 1 28 Introduction Your Multimeter in Brief Input terminals The terminal connections for the different measurement functions of your multimeter are described in the table below Observe the rotary switch position of your multimeter before connecting the test leads to the connector terminals Ensure that the probe accessories are connected to the correct input terminals for the selected measurement function before starting any measurement CAUTION To avoid damaging this device do not exceed the rated input limit Table 1 10 U1231A terminal connections for different measuring functions Rotary switch position Input terminals Overload protection U1231A VHz 600 Vrms xV Mzow Q 0x01 2 600 Vrms for 3 short circuit lt 0 3 A sah f AUX a U1231A U1232A U1233A User s Guide Introduction 1 Your Multimeter in Brief Table 1 11 U1232A and U1233A terminal connections for different measuring functions Rotary switch position Input terminals Overload protection U1233A U1232A VHz VHz 600 Vrms mV mV zow Mow Q Q COM 600 Vrms for gt gt short circuit lt 0 3 A a ed aux m PA HZ pA Hz COM A A Hz awe O 11 A 1000 V fast acting fuse U1231A U1
68. oid instruments being damage from battery leakage e Always remove dead batteries immediately e Always remove the batteries and store them separately if the multimeter is not going to be used for a long period U1231A U1232A U1233A User s Guide 5 1 Introduction Preparing Your Multimeter Turning on your multimeter To power ON your multimeter turn the rotary switch to any other position other than the QB position The model number of your multimeter will be shown on the display briefly A Vsense OF Fy Figure 1 2 Powering on the multimeter To power OFF your multimeter turn the rotary switch to the position Automatic Power Off APO Your multimeter automatically turns off if the rotary switch is not moved or a key is not pressed for 15 minutes default Pressing any key will turn the multimeter back on after it is powered off automatically The MAIJ symbol is shown on the bottom left of the display when the automatic power off function is enabled 6 U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter To change the timeout period or completely disable the automatic power off refer to Changing the auto power off APO timeout on page 88 Enabling the backlight If viewing the display becomes difficult in low light conditions press to activate the LCD backlight Press EX again to deactivate the LCD backlight To conserve battery life a user adjustable timeout contro
69. push the IR head into the multimeter s IR communication port until it snaps into place see Figure 1 3 Communication settings for U1231A U1232A U1233A The baud rate data bits and parity bit are fixed respectively to 9600 bps 8 bit and none for the U1231A U1232A U1233A handheld digital multimeter Ensure that the communication settings on the Keysight GUI Data Logger match the communication settings mentioned in this note Refer to the Keysight GUI Data Logger Software Help and Quick Start Guide for more information on the IR communication link and the Keysight GUI Data Logger software Figure 1 4 Keysight GUI Data Logger Software The Keysight GUI Data Logger software and its supporting documents Help and Quick Start Guide are available as free downloads from http www keysight com find hhTechLib You may purchase a U1173A IR USB cable from a Keysight Sales Office nearest to you U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter Power on options Some options can be selected only while you turn the multimeter on These power on options are listed in the table below To select a power on option press and hold the specified key in Table 1 2 while turning the rotary switch from OFF to any other position Power on options remain selected until the multimeter is turned off Table 1 2 Power on options Key Description Enters the multimeter s Setup menu See Chapter 4 Mult
70. r the likes of that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARN ING notice until the indicated conditions are fully understood and met U1231A U1232A U1233A User s Guide Safety Symbols The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument DC Direct current or voltage AC Alternating current or voltage Earth ground terminal Caution risk of danger refer to this manual for specific Warning or Caution information fo amp it 2 Equipment protected throughout by double insulation or reinforced insulation CAT III 600 V Category III 600 V overvoltage protection U1231A U1232A U1233A User s Guide Safety Considerations CAUTION Read the information below before using this instrument The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards for design manufacture and intended use of the instrument Keysight Technologies assumes no liability for the customer s failure to comply with these requirements Disconnect circuit power and discharge all high voltage capacitors before testing resistance continuity diodes or capac
71. refresh rate U1231A U1232A U1233A User s Guide 85 4 Multimeter Setup Options Setup Menu Items Enabling and changing the voltage alert level This setting is used with the multimeter s voltage alert see page 10 The multimeter will start beeping periodically once the measured voltage exceeds the level set regardless of polarity Use this Setup item to enable or disable the voltage alert and to change the voltage alert level between 1 to 660 V Parameter Range Default setting V oltage Alert 1 to 660 d or E V arte SBOE 230d 6306 H4 0306 H 0306 EF e 29E OO Figure 4 3 Enabling and changing the voltage alert level 86 U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Changing the beep frequency The multimeter s beeper alerts users to the presence of newly sensed values for static recordings sensed values that are out of tolerance or limits set and invalid key operations Use this Setup item to change the driving frequency of the beeper either 3 2 3 4 3 8 or 4 2 kHz or to disable the beeper Parameter Range Default setting bF 3 2 3 4 3 8 4 2 kHz or off 3 8 kHz bFY2 bF JB r fa bF 24 A bF 32 pon Figure 4 4 Changing the beep frequency U1231A U1232A U1233A User s Guide 87 4 Multimeter Setup Options Setup Menu Items Chan
72. ria lt IFAC V gt 0 5 V or AC V the absolute of DC V AC V will be selected Otherwise DC V will be selected Press amp once to lock the initial signal identification AC V or DC V Press 9 again to exchange the AC and DC voltage indication on the primary display Pressing for the third time will restart the auto identification of the signal See Figure 2 7 to learn more U1231A U1232A U1233A User s Guide 37 Making Measurements Using VZ gy for Voltage Measurements a a cut cul gt Av V Auto ED V D D identification M j Jams Auto gt By aes Auto 0 LI L 1 1 L 600 v 0 1 1 1 1 L 600 V Co l OH Co l oe Press to lock the r signa identification Press 9 to lock the na signal identification f a ZLow cube ain Lis ao e e al O a 1 600 V O 600 V CoD l O CD l oe Press to exchange te signal indication to AC V Press amp to exchange the signal indication to DC V a a ZLow rib Pit v v Lt al Press Lis O s a 600 V to restart Auto O 1 600 V m Ge Identification OO Gee Figure 2 7 VZ oy auto identification flow Using VZ ow to test a battery s health Aside from reading a battery s voltage level using the DC voltage measurement function you can also use the VZ ow function to test a battery s health If you detect that the measured battery s voltage shown in
73. s in the fixed installation and equipment for industrial use and some other equipment including stationary motors with permanent connection to the fixed installation Measurement CATIV are measurements performed at the source of low voltage installations Examples are electricity meters and measurements on primary over current protection devices and ripple control units U1231A U1232A U1233A User s Guide 105 5 Characteristics and Specifications Electrical Specifications Electrical Specifications DC specifications Table 5 1 DC specifications Specification assumptions are given on page 104 Test Burden Input Accuracy r Function Range Resolution current voltage impedance U1231A U1232A U1233A where applicable 600 mV 0 1 mV 0 5 2 05 2 05 2 11 18 MQ 6V 0 001 V 0 5 2 0 5 2 0 5 2 11 18 MQ 60 V 0 01 V 0 5 2 0 5 2 0 5 2 10 1 MQ Voltage 600 V 0 1V 0 5 2 0 5 2 0 5 2 10 MQ Ae gill 0 1 V 2 3 2 3 2 3 3kQ Notes for DC voltage specifications 1 The accuracy of the 600 mV range is specified after the Null function is used to subtract the thermal effect by shorting the test leads 2 For VZ ow low input impedance measurements autoranging is disabled and the multimeter s range is set to 600 V in the manual ranging mode 106 U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Electrical Specifications Table 5 1 DC specifications continued Test Burden
74. sent MaxMinAvg input values 3 Press to restart the recording session 4 Press fie for more than 1 second to disable the MaxMin 70 function U1231A U1232A U1233A User s Guide Multimeter Features 3 Capturing Maximum and Minimum Values MaxMin Er Ta wi Jm A e hah n ARO tniminninninin a Figure 3 4 MaxMin display Changing the range manually will also restart the recording session If an overload is recorded the averaging function will be stopped GL is shown in place of the average value The APO auto power off function is disabled when MaxMin is enabled This mode is useful for capturing intermittent readings recording minimum and maximum readings unattended or recording readings while equipment operation keeps you from observing the multimeter display The true average value displayed is the arithmetic mean of all readings taken since the start of recording The average reading is useful for smoothing out unstable inputs calculating power consumption or estimating the percentage of time a circuit is active U1231A U1232A U1233A User s Guide 71 3 Multimeter Features Freezing the Display Trig Hold Log and Auto Hold Log Freezing the Display Trig Hold Log and Auto Hold Log Trig Hold Log and Auto Hold Log readings are recorded automatically for future review or analysis by default See Recalling Previously Recorded Readings Recall on page 74 to learn more Trig Hold Log
75. setting is used with the Auto Hold Log function see page 72 When the variation of the measured value exceeds the value of the variation count the Auto Hold Log function will be ready to trigger Use this Setup item to change the variation count for the Auto Hold Log function between 1 to 999 counts Parameter Range Default setting AutoHold 001 to 999 counts 50 counts APO 7 Ge rl rn ene auto BAE rm TR rt rm ou ou ou e g PIL Po Mu 4g APO Ge APO 7 Ge mm i Lis Figure 4 1 Changing the variation count 84 U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Enabling and changing the Smooth refresh rate Smooth is used to smoothen the refresh rate of the readings in order to reduce the impact of unexpected noise and to help you achieve a stable reading Use this Setup item to enable or disable Smooth and to change the refresh rate for Smooth between 1 to 999 Parameter Range Default setting Smooth 001 to 999 d or E 009 d disabled You can enable Smooth by holding while turning on the multimeter see page 13 This method however is temporary and Smooth will be turned off when the multimeter s power is cycled 999E 009d e n BOSE 009E 009E Psw ress a OGBE OGE Figure 4 2 Enabling and changing the Smooth
76. sful the Scale annunciator is shown on the left of the display The multimeter automatically starts the conversion of the selected Scale item for all voltage measurements You can only change the selected Scale item from the Setup menu See Changing the scale conversion value on page 96 to learn more The Scale operation is enabled until the multimeter s power is cycled 71 3 Multimeter Features Making Scale Transfers Scale THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK 78 U1231A U1232A U1233A User s Guide U1231A U1232A U1233A Handheld Digital Multimeter User s Guide 4 Multimeter Setup Options Using the Setup Menu 80 Editing numerical values 81 Setup Menu Summary 82 Setup Menu Items 84 Changing the variation count 84 Enabling and changing the Smooth refresh rate 85 Enabling and changing the voltage alert level 86 Changing the beep frequency 87 Changing the auto power off APO timeout 88 Changing the LCD backlight timeout 89 Adjusting the LCD backlight intensity 90 Enabling the LED flashlight timeout 91 Adjusting the LED flashlight intensity 92 Changing the minimum measurable frequency 93 Changing the continuity test alerts 93 Changing the power on greeting tone 95 Resetting the Setup items 96 Changing the scale conversion value 96 Enable the AC DC mV measurement 98 Enable open continuity test by default 99 Changing the temperature unit 99 The chapter describes how to change the preset features of your mul
77. specifications 1 Overload protection 600 V input signal is lt 20 000 000 V x Hz product of voltage and frequency Frequency sensitivity specifications For voltage measurements Table 5 6 Frequency sensitivity and trigger level specifications for voltage measurements Input range Minimum sensitivity rms sine wave Maximum input for 5 Hz to 50 kHz sebine acenreey gt U1231A U1232A U1233A 600 mV in Scale mode 50 mV 50 mV 50 mV 600 mV 120 mV 120 mV 120 mV 6V 0 6 V 0 6 V 0 6 V 60 V 5 0 V 5 0 V 5 0 V 600 V 50 V 50 V 50 V Notes for frequency sensitivity specifications for voltage measurements 1 Maximum input for specified accuracy refer to AC specifications on page 109 112 U1231A U1232A U1233A User s Guide Characteristics and Specifications 5 Electrical Specifications For current measurements Table 5 7 Frequency sensitivity and trigger level specifications for current measurements Input range Minimum sensitivity rms sine wave Maximum input for specified 45 Hz to 5 kHz accuracy U1232A U1233A 60 uA 30 uA 30 uA 600 uA 30 uA 30 uA 6A 0 5A 0 5 A 10A 0 5A 0 5 A Notes for frequency sensitivity specifications for current measurements 1 Maximum input for specified accuracy refer to AC specifications on page 109 Scale transfer mV Table 5 8 Scale transfer mV specifications Accuracy Range Resolution U1231A U1232A U1233A DC 600 mV 0 1 mV 0 5 2121 0 5 2121 0 5 2121
78. ss with the test leads open to subtract the residual capacitance of the multimeter and leads For measuring capacitance values greater than 1000 uF discharge the capacitor first then select a suitable range for measurement This will speed up the measurement time and also ensures that the correct capacitance value is obtained U1231A U1232A U1233A User s Guide 49 2 50 Making Measurements Measuring Capacitance Veense patton 12320 roe ruis mimes Capacitance Eq la Kato Log Vsense eu WE Ho Figure 2 17 Measuring capacitance U1231A U1232A U1233A User s Guide Making Measurements Measuring Temperature Measuring Temperature For the U1233A set up your multimeter to measure temperature as shown in Figure 2 19 For the U1231A and U1232A refer to Figure 2 20 Probe the test points and read the display WARNING Do not connect the thermocouple to electrically live circuits Doing so will potentially cause fire or electric shock 2 CAUTION Do not bend the thermocouple leads at sharp angles Repeated bending over a period of time can break the leads The multimeter uses a type K default setting temperature probe for measuring temperature For temperature measurement on the U1233A a type K thermocouple probe and adapter such as the U1186A purchased separately is recommended It is only compatible with the U1233A e For auxiliary temperature measurement on the U1231A and U12
79. t the rotary switch is at the OFF position Use only the battery type specified in the Product Characteristics on page 102 U1231A U1232A U1233A User s Guide 1 Introduction Preparing Your Multimeter 1 Open the battery cover Loosen the screw with a suitable Phillips screwdriver and remove the battery cover as shown in Figure 1 1 2 Insert the batteries Observe the proper battery polarity The terminal ends of each battery are indicated inside the battery compartment 3 Close the battery cover Place the battery cover back in its original position and tighten the screw Figure 1 1 Installing the batteries The battery level indicator in the lower right hand corner of the display indicates the relative condition of the batteries Table 1 1 describes the various battery levels the indicator represents U1231A U1232A U1233A User s Guide Introduction 1 Preparing Your Multimeter Table 1 1 Battery level indicator Indication Battery capacity sn Full capacity Ca 2 3 capacity Ce 1 3 capacity Cc 1 Flashing periodically Almost empty 1 Batteries change advised Always use the specified battery type listed in page 102 WARNING To avoid false readings which could lead to possible electric shock or personal injury replace the batteries as soon as the low battery indicator appears Do not discharge the batteries by shorting the batteries or reversing the batteries polarity CAUTION To av
80. timeter KEYSIGHT TECHNOLOGIES 4 Multimeter Setup Options Using the Setup Menu Using the Setup Menu 80 The Setup menu allows you to change a number of nonvolatile preset features Modifying these settings affects the general operation of your multimeter across several functions Select a setting to edit to perform one of the following e Switch between two values such as on or off e Cycle through multiple values from a predefined list e Decrease or increase a numerical value within a fixed range The contents of the Setup menu are summarized in Table 4 2 on page 82 Table 4 1 Setup menu key functions Legend Description Press and hold while powering on the multimeter to access the Setup menu Ese shi Press and hold for more than 1 second to exit this mode ANull Range FT lt a Recaii lt a Press C or G588 to step through the menu items Press ti or ie at each menu item to change the preset settings The menu item in the secondary display will flash to indicate that you can now change the menu item values Press or 8 again to switch between two values to cycle through multiple values from a list or to decrease or increase a numerical value While the menu item is flashing press G88 to save your changes CEJ Ese smn While the menu item is flashing press amp to discard your changes U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Using the
81. tion only This test sends a current through a semiconductor junction and then measures the junction s voltage drop Connect the red test lead to the positive terminal anode of the diode and the black test lead to the negative terminal cathode The cathode of a diode is indicated with a band piety lt Vv LJ LA Ls Ls gt t 0 I I I I I 6 n w fi ss Figure 2 12 Diode display Your multimeter can display the forward bias of a diode up to approximately 2 1 V The forward bias of a typical diode is within the range of 0 3 V to 0 8 V however the reading can vary depending on the resistance of other pathways between the probe tips U1231A U1232A U1233A User s Guide 45 2 Making Measurements Testing Diodes If the beeper is enabled during diode test the multimeter will beep briefly for a normal junction and sound continuously for a shorted junction below 0 050 V See Changing the beep frequency on page 87 to disable the beeper Reverse the probes as shown in Figure 2 15 and measure the voltage across the diode again Assess the diode according to the following guidelines A diode is considered good if the multimeter displays ai in reverse bias mode A diode is considered shorted if the multimeter displays approximately 0 V in both forward and reverse bias modes and the multimeter beeps continuously A diode is considered open if the multimeter displays fii in both forward and reverse bias modes
82. tup Menu Items Adjusting the LCD backlight intensity The multimeter s LCD backlight see page 7 can be adjusted to seven different intensity levels Use this Setup item to adjust the LCD backlight s intensity level either Lo 02 03 ME 05 06 or Hi Parameter Range Default setting bL Lo 02 03 ME 05 06 or Hi Hi Figure 4 7 Changing the LCD backlight intensity U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Enabling the LED flashlight timeout The multimeter s LED flashlight see page 7 uses a timer to determine when to turn off the LED flashlight Use this Setup item to enable or disable the LED flashlight timeout and to change its timeout period from 1 to 99 seconds Parameter Range Default setting t orchlight 01 to 99 d or E seconds a GE t34 APO O Press Y i Press A Cc E Press gt i IT E Press gt E Cc E E all Press lt d Press lt lad om ee oo OD Press Y Press A Press Y jj Press A EHE E 20 Press Y t Press A ma i E LI APO ee Figure 4 8 Changing the LED flashlight timeout U1231A U1232A U1233A User s Guide 91 4 Multimeter Setup Options Setup Menu Items Adjusting the LED flashlight intensity The multimeter s LED flashlight see page 7 can be adjusted to seven different intensity levels Use this Setup item to adjust th
83. up item to change the scale conversion value either 1000 A V 1000 C F V 1000 V V 100 A V 10 A V 1 A V or 0 1 A V 96 U1231A U1232A U1233A User s Guide Multimeter Setup Options 4 Setup Menu Items Parameter Range Default setting Scale 1000 A V 1000 C F V 1000 V V 1000 A V 100 A V 10 A V 1 A V or 0 1 A V The temperature voltage scale conversion 1000 C V or 1000 F V is dependent on the temperature unit setup see page 99 e If C or C F is selected 1000 C V is shown during the scale conversion e If F or F C is selected 1000 F V is shown during the scale conversion Changing the temperature unit via the key is disabled when Scale is enabled for voltage measurements Press gt Ea co Z3 CJ CI i OLS APO Press Y Co Press lt B lt Press A Press Y e C3 rm LJ i pa LJ i i ri Scale LJ Scale LJ Vv Vv Press Y Press A Press V J Press A Mi rrr Scale LJ Scale LJ LJ v v APO Ge APO Ge aD Press W i Press A i A Scale lt Press W i Press A nm ou Ul Figure 4 14 Changing the scale conversion value U1231A U1232A U1233A User s Guide 97 4 Multimeter Setup Options Setup Menu Items Enable the AC DC mV measurement You can choose to set the multimeter to measure AC or DC mV at the rotary positions shown below e U1233A
84. ure 2 27 Frequency display 63 Figure 2 28 Measuring frequency 64 Figure 3 1 Detecting voltage presence 67 Figure 3 2 Nulldisplay 68 Figure 3 3 Null operation 69 Figure 3 4 MaxMin display 71 Figure 3 5 Trig Hold Log display 72 Figure 3 6 Auto Hold Log display 73 Figure 3 7 View display 74 Figure 3 8 Empty view display 75 Figure 4 1 Changing the variation count 84 Figure 4 2 Enabling and changing the Smooth refresh rate 85 Figure 4 3 Enabling and changing the voltage alert level 86 Figure 4 4 Changing the beep frequency 87 Figure 4 5 Changing the auto power off timeout 88 Figure 4 6 Changing the LCD backlight timeout 89 Figure 4 7 Changing the LCD backlight intensity 90 Figure 4 8 Changing the LED flashlight timeout 91 Figure 4 9 Changing the LED flashlight intensity 92 Figure 4 10 Changing the minimum measurable frequency 93 Figure 4 11 Changing the continuity test alerts 94 Figure 4 12 Changing the power on greeting tone 95 Figure 4 13 Resetting the Setup items 96 Figure 4 14 Changing the scale conversion value 97 Figure 4 15 Enable the AC DC mV measurement 98 Figure 4 16 Enable open continuity test by default 99 Figure 4 17 Changing the temperature unit 100 XVI U1231A U1232A U1233A User s Guide List of Tables Table 1 1 Battery level indicator 5 Table 1 2 Power on options 13 Table 1 3 Front panel parts 17 Table 1 4 Rear panel parts 18 Table 1 5 U1231A U1232A U1233A rotary switch functions 20 Table 1 6 Keypad
85. uvivninu Rete Figure 3 7 View display If nothing has been recorded nan is displayed instead U1231A U1232A U1233A User s Guide Multimeter Features 3 Recalling Previously Recorded Readings Recall 7 G gt GD q a gt LAN I 0 L I I I 10 mo Rel E Figure 3 8 Empty view display 2 Use the following steps to navigate the Recall menu i Press ti to jump to the last stored entry or press and hold ti for more than 1 second to jump to the first stored entry ii Press g to view the next stored entry or press to view the previous stored entry The index number shown by the analog bar graph increases or decreases by one iii Press for more than 1 second to permanently store all data entries in the multimeter s nonvolatile memory PASS is shown on the display if the data entries are successfully stored iv Press for more than 1 second to clear the temporary data entries nanE is shown on the display if the data entries are successfully cleared Cycle the multimeter s power again to view the permanent data entries To clear the permanent data entries 1 Press for more than 1 second until nanE is shown on the display 2 Then press G8 for more than 1 second until PASS is shown on the display 3 All data entries stored in the multimeter s nonvolatile memory will be erased 3 Press for more than 1 second to exit the Recall menu U1231A U1232A U1233A User s Guide 75 3

Keysight U1231A, U1232A, and U1233A Handheld Digital Multimeter

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