Keysight U1211A User'S And Service Manual Download

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Keysight U1211A, U1212A, and U1213A User’s and Service Guide

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Summary of Contents for U1211A

Page 1: ...Keysight U1211A U1212A and U1213A Clamp Meters User s and Service Guide ...

Page 2: ...of these rights customarily provided to the public to use modify reproduce release perform display or disclose commercial computer software or commercial computer software documentation No additional government requirements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer softwa...

Page 3: ...rrent DC Caution risk of electric shock Alternating current AC Caution risk of danger refer to this manual for specific Warning or Caution information Earth ground terminal Equipment protected throughout by double insulation or reinforced insulation Category III 1000 V overvoltage protection Application around and removal from HAZARDOUS LIVE conductors is permitted Category IV 600 V overvoltage pr...

Page 4: ...oose Replace the battery as soon as the low battery indicator is shown on the annunciator display This is to avoid false readings which may lead to possible electric shock or personal injury When measuring temperature keep the thermocouple probe as close to the meter as possible and avoid contact with surface above 30 VAC RMS or 60 VDC as this will pose shock hazard Do not operate the product in a...

Page 5: ... through physical damage excessive moisture or any other reason Remove power and do not use the product until safe operation can be verified by service trained personnel If necessary return the product to the nearest Keysight Technologies Sales and Service office for service and repair to ensure the safety features are maintained CAUTION Turn off circuit power and discharge all high voltage capaci...

Page 6: ...ge installation Examples are measurements on household appliances portable tools and similar equipment Measurement CAT III Measurements performed in the building installation Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment inc...

Page 7: ...ation The table below shows the general environmental requirements for this instrument Environmental conditions Requirements Operating temperature 10 C to 50 C Relative humidity Maximum 80 RH for temperature up to 31 C decreasing linearly to 50 RH at 50 C Altitude operating 2000 meters Storage temperature 20 C to 60 C Storage humidity 0 to 80 RH non condensing ...

Page 8: ... Act of 1992 The CSA mark is a registered trademark of the Canadian Standards Association 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 ICES NMB 001 indicates that this ISM device complies with the Canadian ICES 001 Cet appareil ISM est conforme...

Page 9: ...ified 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 http about keysight com en companyinfo environment takeback shtml for more information Sales and Technical Support To contact Keysight for sales and technical support refe...

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Page 11: ...atures 21 Initial Inspection 22 Standard purchase items 22 Product at a Glance 23 The front panel at a glance 23 The annunciator display at a glance 24 The buttons at a glance 27 The rotary switch at a glance 30 The terminals at a glance 31 The clamp jaw at a glance 32 The rear panel at a glance 33 2 Making Measurements Performing Current Measurement 36 Performing Voltage Measurement 38 Performing...

Page 12: ...ng the Default Settings Selecting Setup Menu 64 Default Factory Settings and Available Setting Options 66 Setting minimum frequency measurement 68 Setting beep frequency 69 Setting Data Hold Refresh Hold mode 70 Setting auto power off mode 71 Setting backlight power on duration 72 Setting temperature unit 73 Returning to default factory settings 75 5 Maintenance General Maintenance 78 Battery repl...

Page 13: ...sting the backlight 87 Test Considerations 88 Input connections 88 Performance Verification Tests 89 Functional tests only for U1212A and U1213A 94 Calibration Security 97 Unsecuring the instrument for calibration 97 Adjustment Considerations 100 Valid adjustment reference input values 101 Front Panel Calibration 106 Calibration process 106 Adjustment procedures 106 Adjustment count 114 Error Code...

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Page 15: ...diode forward bias 44 Figure 2 6 Measuring diode reverse bias 45 Figure 2 7 Measuring capacitance 47 Figure 2 8 Measuring temperature 49 Figure 3 1 Data hold operation 53 Figure 3 2 Refresh hold operation 55 Figure 3 3 Dynamic recording mode 58 Figure 3 4 1 ms peak hold mode operation 60 Figure 3 5 Null relative mode operation 62 Figure 4 1 Setting the minimum frequency 68 Figure 4 2 Setting the b...

Page 16: ...16 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 6 3 Typical adjustment process flow 108 Figure 6 4 Displaying adjustment counts 114 ...

Page 17: ... troubleshooting procedures 81 Table 5 2 Replacement parts list 82 Table 6 1 Recommended test equipment 86 Table 6 2 Performance verification tests 90 Table 6 3 DC current offset verification test 94 Table 6 4 AC current balancing verification test 96 Table 6 5 U1211A valid adjustment reference input values 101 Table 6 6 U1212A valid adjustment reference input values 102 Table 6 7 U1213A valid adj...

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Page 19: ... Service Guide 19 1 Getting Started Introduction 20 Initial Inspection 22 Product at a Glance 23 This chapter contains a brief introduction and description of the front panel display buttons and terminals on the Keysight U1211A U1212A and U1213A Clamp Meters ...

Page 20: ...meter measurement features to enable other measurements associated to a multimeter All the clamp meter models are able to measure AC current AC and DC voltage resistance audible continuity diode capacitance and frequency The U1212A has additional DC current and temperature measurement functions The U1213A has additional AC DC current AC DC voltage and duty cycle tests apart from the additional mea...

Page 21: ... to 40 MΩ for U1213A only Capacitance measurement up to 4000 µF Frequency measurement up to 200 kHz 1 ms peak hold to capture in rush voltage and current easily Diode and audible continuity tests K type thermocouple for temperature measurement Frequency and duty cycle measurements Dynamic recording for min max and average readings Data hold with manual trigger and null mode Hand guard to prevent c...

Page 22: ...he warranty information Standard purchase items Verify that you have received the following items with your unit If anything is missing or damaged please contact the nearest Keysight Sales Office Standard test leads with 4 mm probes Soft carrying case Keysight U1211A U1212A and U1213A Clamp Meter Quick Start Guide Certificate of Calibration Keep the original packaging in case the clamp meter has t...

Page 23: ... and Service Guide 23 Product at a Glance The front panel at a glance Figure 1 2 Clamp meter front panel Jaw markings Clamp jaw Hand guard Handle Annunciator Black input terminal Red input terminal Hold Max Min button Rotary switch Front panel Function buttons ...

Page 24: ...splay with all segments illuminated press and hold Hold Max Min while rotating the rotary switch to A on the clamp meter After you are done viewing the full display press and hold Hold Max Min again to resume normal operation Table 1 1 U1211A U1212A and U1213A annunciator display No Annunciator Description 1 AUTO Auto ranging 2 Δ Zeroing mode 3 DH Data hold 4 MAX AVG MIN Dynamic recording mode on ...

Page 25: ...age measurement unit 12 M k Ω Resistance measurement unit and range 13 Diode measurement indicator 14 Duty cycle for U1213A only 15 kHz Frequency measurement unit 16 Secondary display for frequency and duty cycle measurement and temperature unit 17 Analog bar graph with scale indicator 18 Auto power off enabled 19 Negative polarity 20 Primary display Table 1 1 U1211A U1212A and U1213A annunciator ...

Page 26: ...ging inputs the bar graph provides a useful indication because it has a faster updating rate to cater for fast response applications The bar graph is not applicable for temperature measurement A negative sign will be indicated whenever a negative value is measured Each segment of the analog bar graph is represented by a count of 100 Table 1 2 Analog bar graph ranges Measurement range Bar graph dis...

Page 27: ...old Max Min button is designated as a Save button See Selecting Setup Menu on page 64 for more information Table 1 3 Hold Max Min button description Button Description Press Hold Max Min momentarily to perform data hold operation The annunciator display will indicate DH which means a reading has been freezed Press and hold Hold Max Min for more than 1 second to disable data hold operation Press Ho...

Page 28: ...second Only do not have secondary function Primary functions Secondary functions Button Description Press Shift Peak momentarily to perform a shifted function The shifted function is mostly used with the rotary switch to cycle between measurement functions See The rotary switch at a glance on page 30 for more information Press Shift Peak for more than 1 second to perform Peak function See 1 ms Pea...

Page 29: ...ss Range Auto momentarily to scroll through the available measurement ranges except diode and capacitance measurement Press Range Auto for more than 1 second to enable automatic range detection except diode and capacitance measurement Press Range Auto momentarily to disable automatic range detection a The duty cycle function is only available for U1213A clamp meter Button Description ...

Page 30: ...r AC DC b current measurements By default measurement is set to AC current AC DC or AC DC b voltage measurements By default measurement is set to AC voltage Resistance measurement audible continuity test or temperature a measurement By default the measurement is set to resistance measurement Diode or capacitance measurement By default measurement is set to diode measurement a The temperature measu...

Page 31: ...ut limit Red input terminals V Black input terminal COM Table 1 4 Terminal connections for different measurement functions Measurement functions Input terminals Input limit AC current Clamp jaw 1000 Arms DC current a AC voltage V COM CAT III 1000 Vrms CAT IV 600 Vrms DC voltage Resistance COM 1000 Vrms for short circuit 0 3 A Capacitance Diode Temperature b a DC current measurement is only availab...

Page 32: ...or The clamp jaw can be opened and closed allowing a maximum opening of 2 inches Press the handle of the clamp meter to open the clamp jaw When measuring current there are 3 jaw markings to observe Current is measured accurately by placing the conductor in the middle of the 3 jaw markings See Performing Current Measurement on page 36 for more information on performing current measurements Figure 1...

Page 33: ...tting Started 1 Keysight U1211A U1212A and U1213A User s and Service Guide 33 The rear panel at a glance Figure 1 9 Clamp meter rear panel Battery cover Handle Back panel Hand guard Clamp jaw Jaw markings ...

Page 34: ...1 Getting Started 34 Keysight U1211A U1212A and U1213A User s and Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Page 35: ...ode Measurement 43 Performing Capacitance Measurement 46 Performing Temperature Measurement 48 This chapter contains many types of measurements that you can make with the U1211A U1212A and U1213A Clamp Meters and how to make the connections for each measurement WARNING Ensure that the terminal connections are correct for a particular measurement before making any measurement To avoid damage to the...

Page 36: ...o open the clamp jaw 4 Clamp around a conductor and ensure that the conductor fits the markings on the jaw 5 Read the display Press Hz to view the frequency indication on the secondary display WARNING Ensure the test leads are disconnected from the input terminals when measuring current with the clamp meter CAUTION Ensure that the clamp meter measures only one conductor at a time Measuring multipl...

Page 37: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 37 Figure 2 1 Measuring current Press Read Conductor ...

Page 38: ...ge 39 1 Set the rotary switch to V 2 Connect the red and black test leads to input terminals V red and COM black respectively 3 Press Shift to switch between AC voltage DC voltage and AC DC voltage for U1213A only measurements 4 Probe the test points and read the display Press Hz to view the frequency indication on the secondary display ...

Page 39: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 39 Figure 2 2 Measuring voltage Connect Press Probe and read ...

Page 40: ...rminals Ω red and COM black respectively 3 Probe the test points by shunting the resistor and read the display 4 To perform continuity test press Shift once see Figure 2 4 on page 42 The buzzer will sound when the resistance is below 10 0 Ω CAUTION Disconnect circuit power and discharge all high voltage capacitors before measuring resistance or conductance or testing circuit continuity to avoid da...

Page 41: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 41 Figure 2 3 Measuring resistance Probe and read Connect ...

Page 42: ...2 Making Measurements 42 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 2 4 Continuity test Probe and read Connect ...

Page 43: ... Assess the diode according to the following guidelines A diode is considered good if the clamp meter displays OL in reverse bias mode A diode is considered shorted if the clamp meter displays approximately 0 V in both forward and reverse bias modes and the clamp meter beeps continuously A diode is considered open if the clamp meter displays OL in both forward and reverse bias modes CAUTION Discon...

Page 44: ...2 Making Measurements 44 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 2 5 Measuring diode forward bias Probe and read Connect ...

Page 45: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 45 Figure 2 6 Measuring diode reverse bias Probe and read Connect ...

Page 46: ...st points and read the display CAUTION Disconnect circuit power and discharge all high voltage capacitors before measuring capacitance to avoid damaging the clamp meter or the device under test To confirm that a capacitor has fully discharged use the DC voltage function NOTE Measuring tips For measuring capacitance greater than 4000 µF discharge the capacitor and manually select a suitable measure...

Page 47: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 47 Figure 2 7 Measuring capacitance Press Connect Probe and read ...

Page 48: ...as Do not immerse this thermocouple probe in any liquid For best results use a thermocouple probe designed for specific application an immersion probe for liquid or gel and an air probe for air measurement Observe the following measurement settings Clean the surface to be measured and ensure that the probe is securely touching the surface Remember to disable the applied power When measuring above ...

Page 49: ...Making Measurements 2 Keysight U1211A U1212A and U1213A User s and Service Guide 49 Figure 2 8 Measuring temperature Press Connect Probe and read ...

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Page 51: ...rvice Guide 51 3 Functions and Features Data Hold Trigger Hold 52 Refresh Hold 54 Dynamic Recording 56 1 ms Peak Hold 59 Null Relative 61 This chapter contains detailed information on functions and features available in the U1211A U1212A and U1213A Clamp Meters ...

Page 52: ... menu before using the data hold operation See Setting Data Hold Refresh Hold mode on page 70 for more information Enabling the data hold function 1 Ensure that the data hold operation is enabled in the setup menu 2 Press Hold Max Min to enable the data hold operation 3 The annunciator display will indicate DH and the data hold function is enabled 4 Press Hold Max Min again to trigger 5 Press Hold...

Page 53: ...es 3 Keysight U1211A U1212A and U1213A User s and Service Guide 53 Figure 3 1 Data hold operation Press Press to trigger After a stable reading occurs Press to trigger After a stable reading occurs Press Blinking Blinking ...

Page 54: ...ld value to check if the variation value exceeds the set variation count A new reading value will be updated in the primary display when the variation of the measured value exceeds the variation count preset in the setup menu The instrument beeps once if the beeper is enabled when a reading value is updated For voltage current and capacitance measurements the reading value will not be updated when...

Page 55: ...r s and Service Guide 55 Figure 3 2 Refresh hold operation NOTE If the reading is unable to reach a stable state when exceeding the preset variation the reading value will not be updated Press After a stable reading occurs Variation counts settings Press Blinking ...

Page 56: ... or mean AVG and minimum MIN Enabling the dynamic recording mode 1 Press Hold Max Min for more than 1 second to enable the dynamic recording mode The annunciator display will indicate MAX AVG MIN You are currently in present reading state 2 Press Hold Max Min momentarily to cycle through the maximum reading the MAX function indicated minimum reading the MIN function indicated or average reading th...

Page 57: ...number of readings taken since the dynamic recording mode was enabled Accumulated statistics are Max Avg Min present reading actual input signal value Max maximum reading since the dynamic recording mode was enabled Min minimum reading since the dynamic recording mode was enabled Avg true average of all readings since the dynamic recording mode was enabled ...

Page 58: ...ns and Features 58 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 3 3 Dynamic recording mode Press for 1 second Press Press Press Press Press for 1 second Press for 1 second Press for 1 second ...

Page 59: ... 1 ms peak hold mode ON and OFF 2 Press Hold Max Min to switch between maximum and minimum peak readings DH MAX indicates maximum peak while DH MIN indicates minimum peak DH MIN minimum peak is only available in U1213A 3 Press Shift Peak for more than 1 second to exit the mode 4 In the measurement example shown in Figure 3 4 on page 60 the crest factor will be 312 2 220 8 1 414 Crest factor Peak v...

Page 60: ...3 Functions and Features 60 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 3 4 1 ms peak hold mode operation Press for 1 second Press Processing Press for 1 second ...

Page 61: ...erence value to be subtracted from subsequent measurements and to set the display to zero The symbol is indicated on the annunciator display 2 Press to view the stored reference value The symbol on the annunciator display blinks for 3 seconds before the display turns to zero 3 To exit this mode press while is blinking on the annunciator display NOTE Null can be set for both auto and manual range s...

Page 62: ...ons and Features 62 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 3 5 Null relative mode operation Press for relative base Blinking Press to exit relative mode Press to enable null operation ...

Page 63: ... Selecting Setup Menu 64 Default Factory Settings and Available Setting Options 66 This chapter describes the various items and settings in the setup menu This chapther also describes how to change the default factory settings of the U1211A U1212A and U1213A Clamp Meters and other available setting options ...

Page 64: ...tions Modifying these settings affects the operation of your instrument across several functions Select the setting you want to edit to do the following Switch between two values such as on or off Select a value from the list Decrease or increase a value by using the directional keys The buttons Hold Max Min Shift Peak Hz and Range Auto doubles as save button and directional keypads to toggle the ...

Page 65: ...navigate the selected menu pages 2 Press or to toggle the item that needs to be changed A blinking menu indicates that changes have been made in the current settings but not saved 3 Press Hold Max Min to save the changes you have made 4 Press Shift Peak for more than 1 second to exit the setup mode Toggle Up arrow Navigation Right arrow Table 4 1 Setup mode buttons operation continued Setup mode b...

Page 66: ... select a value within the range of 100 to 1000 To disable this function select OFF Note Select OFF to enable data hold manual trigger 15 Automatic power off To enable this function select a value within the range of 1 minute to 99 minutes To disable this function select OFF 30 Sets the timer to automatically turn off the LCD display backlight To enable this function select a value within the rang...

Page 67: ...Temperature unit To set press Range Auto for more than 1 second when you are in setup mode Available options C Single display in C only F Single display in F only C F Dual display C in primary display F in secondary F C Dual display F in primary display C in secondary Table 4 2 Default factory settings and available setting options for each feature continued Feature Default factory setting Availab...

Page 68: ...uency measurement The minimum frequency setup influences the measurement rates for frequency and duty cycle The typical measurement rate as defined in the general specifications is based on a minimum frequency of 10 Hz Figure 4 1 Setting the minimum frequency Press Press Press Press Press Press Press Press Initial ...

Page 69: ... U1213A User s and Service Guide 69 Setting beep frequency The beep frequency can be set to 4800 Hz 2400 Hz 1200 Hz or 600 Hz OFF means the beep sound is disabled Figure 4 2 Setting the beep frequency Press Press Press Press Press Press Press Press Press Press ...

Page 70: ... OFF To enable the refresh hold mode automatic trigger set the variation count within the range of 100 to 1000 in a step of 100 Once the variation of the measured value exceeds this preset variation count the refresh hold mode will be ready to trigger and update a new value Figure 4 3 Setting the data hold or refresh hold mode Press Press Press or to edit the value at a step of 100 Press Press ...

Page 71: ... is pressed A measurement function is changed Dynamic recording is enabled 1 ms peak hold is enabled Auto power off mode is disabled in the setup mode To reactivate the clamp meter after auto power off simply press any button To disable auto power off mode select OFF When the auto power off mode is disabled in the annunciator display will be turned off The clamp meter will remain turned on until y...

Page 72: ...er on duration The backlight timer can be set from 1 to 99 seconds The backlight turns off automatically after the set period OFF means the backlight will not turn off automatically Figure 4 5 Setting the backlight power on duration Press or to edit the value Press or to edit the value Press Press Press Press Initia ...

Page 73: ...hen you are in setup mode Four combinations of displayed unit s are available Celcius only C single display Celcius Fahrenheit C F dual display C on primary and F on secondary Fahrenheit only F single display Fahrenheit Celcius F C dual display F on primary and C on secondary NOTE Always set the temperature unit display for official requirements and comply with national law and standards ...

Page 74: ...Settings 74 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 4 6 Setting the temperature unit Press for more than 1 second to enable temperature unit menu item Press Press Press Press Press Press Press Press ...

Page 75: ...uide 75 Returning to default factory settings No other options are available in this menu item Press Hold Max Min to reset to default factory settings The reset menu item automatically reverts to minimum frequency settings menu item Figure 4 7 Reverting to default factory settings Press ...

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Page 77: ...aintenance General Maintenance 78 Troubleshooting 81 Replacement Parts 82 This chapter will help you troubleshoot malfunctioning U1211A U1212A and U1213A Clamp Meters CAUTION Any repair or service which is not covered in this manual should only be performed by qualified personnel ...

Page 78: ...any dirt that may have accumulated in the terminals 3 Wipe the case with a damp cloth and mild detergent do not use abrasives or solvents WARNING Ensure that terminal connections are correct for a particular measurement before making the measurement To avoid damaging the device do not exceed the rated input limit NOTE Prevent rust by wiping metal surfaces with oil from time to time If rusted light...

Page 79: ...ollows 1 Set the rotary switch to off 2 Disconnect test leads from the input terminal 3 Loosen the screw on the battery cover 4 Lift the battery cover slightly then pull the battery cover upwards 5 Replace the specified battery 6 Reverse the procedures above to close the cover WARNING The battery must be recycled or disposed off properly after depletion CAUTION To avoid instruments being damage fr...

Page 80: ...5 Maintenance 80 Keysight U1211A U1212A and U1213A User s and Service Guide Figure 5 1 Replacing the battery in the clamp meter Loosen screw Lift battery cover Pull upwards ...

Page 81: ...rvicing the clamp meter When servicing the instrument use only the specified replacement parts Table 5 1 will assist you in identifying some basic problems WARNING To avoid electrical shock do not perform any servicing unless you are qualified to do so Table 5 1 Basic troubleshooting procedures Malfunction roubleshooting procedure No annunciator display after switching on Check battery Replace bat...

Page 82: ...t your nearest Keysight Sales Office or Service Center 2 Identify the parts by their corresponding Keysight part numbers shown in the replacement parts list 3 Provide the instrument model number and serial number NOTE You may find the latest U1211A U1212A and U1213A Clamp Meters parts list in the Keysight Test and Measurements Parts Catalog http www keysight com find parts NOTE Not all parts liste...

Page 83: ... Verification Tests 89 Calibration Security 97 Adjustment Considerations 100 Front Panel Calibration 106 This chapter contains the performance test and adjustment procedures The performance test procedure verifies that the U1211A U1212A and U1213A Clamp Meters are operating within its published specifications The adjustment procedure ensures that the clamp meter remains within the specifications u...

Page 84: ...the non volatile memory until the next calibration adjustment is performed The non volatile EEPROM calibration memory is retained when the power is off Keysight Technologies calibration services When your instrument is due for calibration contact your local Keysight Service Center for a low cost recalibration Calibration Interval A 1 year interval is adequate for most applications Accuracy specifi...

Page 85: ...t performance This will assure that the U1211A U1212A and U1213A clamp meters will remain within the specifications for the next calibration interval This criterion for the re adjustment provides the best long term stability Performance data are measured during the performance verification tests but this does not guarantee that the instrument will remain within these limits unless the adjustments ...

Page 86: ...is not available substitute with another calibration standard of equivalent accuracy Table 6 1 Recommended test equipment Application Recommended equipment DC voltage Fluke 5520A DC current Fluke 5520A and Fluke 5500A COIL AC voltage Fluke 5520A AC current Fluke 5520A and Fluke 5500A COIL Resistance Fluke 5520A Capacitance Fluke 5520A Diode Fluke 5520A Temperature Fluke 5520A Short Shorting plug d...

Page 87: ... is required if the instrument fails any of these basic operating tests Testing the display Press Hold Max Min while rotating the rotary switch to A on the clamp meter to view all segments of the annunciator display Compare the display with the example in Figure 6 1 Figure 6 1 Full segments of annunciator display Testing the backlight Press Hz for more than 1 second to carry out test on the backli...

Page 88: ...rce to earth at the calibrator except where otherwise indicated in the procedures It is important that the LO to earth connection be made at only one place in the circuit to avoid ground loops Please ensure that the calibration standards and test procedures used do not introduce additional errors Ideally the standards used to verify and adjust the instrument should be an order of magnitude more ac...

Page 89: ...ustment or repair is required Carry out the performance verification tests according to Table 6 2 on page 90 and Functional tests only for U1212A and U1213A on page 94 For every listed step 1 Connect the calibration standard terminals to the input terminals on the clamp meter 2 Set up the calibration standard with the signals specified in the Reference signals values column one setting at a time i...

Page 90: ...2 C 0 C Probe accuracy 1 0 C Probe accuracy 1 0 C 40 C to 1372 C 1372 C Probe accuracy 14 7 C Probe accuracy 14 7 C Resistance 400 Ω 400 Ω 2 3 Ω 2 3 Ω 1 5 Ω 4 kΩ 4 kΩ 0 023 kΩ 0 023 kΩ 0 015 kΩ 40 kΩ 40 kΩ 0 15 kΩ 400 kΩ 400 kΩ 1 5 kΩ 4 MΩ 4 MΩ 0 027 MΩ 40 MΩ 40 MΩ 0 85 MΩ Diode Diode 1 9 V 0 012 V 0 012 V 0 012 V Capacitance 4 µF 4 µF 0 044 µF 40 µF 40 µF 0 44 µF 400 µF 400 µF 8 4 µF 8 4 µF 8 4 µ...

Page 91: ... 25 V Peak voltage max 400 V 400 Vp 60 Hz 8 3 V 8 3 V 8 3 V Frequency 99 99 Hz 10 Hz 0 6 V 0 05 Hz 9 999 kHz 2 kHz 20 V 0 007 kHz 0 007 kHz Duty cycle 0 1 to 99 9 5 Vpp at 50 square wave 2 kHz 0 9 AC DC voltage b 4 V 4 V 45 Hz 0 069 V 4 V 2 kHz 0 109 V 40 V 40 V 45 Hz 0 69 V 40 V 2 kHz 1 09 V 400 V 400 V 45 Hz 6 9 V 400 V 2 kHz 10 9 V 1000 V 1000 V 45 Hz 24 V 1000 V 2 kHz 34 V Table 6 2 Performanc...

Page 92: ... A 25 A 25 A AC current 40 A 0 8 A 45 Hz 40 A 45 Hz 0 5 A 0 9 A 0 9 A 0 8 A 100 Hz 40 A 100 Hz 0 5 A 1 3 A 1 3 A 0 8 A 400 Hz 40 A 400 Hz 0 5 A 2 7 A 2 7 A 400 A 8 A 45 Hz 400 A 45 Hz 4 5 A 8 5 A 8 5 A 0 4 A 400 Hz 20 A 400 Hz 0 7 A 1 8 A 1 8 A 1000 A 14 A 45 Hz 700 A 45 Hz 12 A 22 5 A 19 A 2 99999 A 400 Hz 150 A 400 Hz 14 75 A 14 75 A 20 A 45 Hz 1000 A 45 Hz 30 A 25 A AC DC current b b The measur...

Page 93: ...ts and Calibration 6 Keysight U1211A U1212A and U1213A User s and Service Guide 93 Figure 6 2 Current performance verification test setup 5520A calibrator 50 turn current coil AC or DC current 3 A AC or DC current 3 A ...

Page 94: ...e clamp meter to the DC current function 3 Check whether the measured reading falls within the specified error limits from the reference value as stated in Table 6 3 Otherwise repair is recommended Please contact Keysight Service Center for support NOTE Ensure that the clamp meter is stationary when conducting the functional tests in order to get accurate readings Table 6 3 DC current offset verif...

Page 95: ...on is close to the top of the jaw 3 Record the current reading at position 1 4 Slowly move the clamp meter so that the conductor is in position 2 as shown in the figure below Ensure that the conductor position is close to the bottom of the jaw 5 Record the current reading at position 2 6 Calculate the difference between the readings at position 1 and position 2 Check whether the difference falls w...

Page 96: ...d U1213A User s and Service Guide Table 6 4 AC current balancing verification test Test function Range 5520A output use with 5500A COIL Reference values Error limits Difference between reading at position 1 and position 2 AC current 400 A 6 A 50 Hz 300 A 50 Hz 0 5 A ...

Page 97: ...y which does not change even when the power is off The security code may contain up to 4 numeric characters Unsecuring the instrument for calibration Before you can adjust the instrument you must unsecure it by entering the correct security code The security code is set to 1234 when the instrument is shipped from the factory The security code is stored in non volatile memory and does not change wh...

Page 98: ... Press Hold Max Min when done If the correct security code is entered the secondary display will indicate PASS Changing the instrument Calibration Security Code 1 When the meter is in the unsecured mode press Range Auto for more than 1 second to enter the Calibration Security Code setting mode 2 The primary display shows the current security code and the secondary display shows CHG 3 Press or to s...

Page 99: ...indicate 5555 and the annunciator secondary display will indicate SECU 4 Press Range Auto for more than 1 second to enter the Set Default Security Code mode 5 The annunciator secondary display will indicate SEri and the annunciator primary display will indicate 5555 6 Press or to step each character in the code Press or to select each character 7 Set the code similar to the last 4 digits of the in...

Page 100: ...as you connect test leads to the calibrator and this instrument It is recommended that you wait for 1 minute after connecting the test leads before you begin the calibration 4 During ambient temperature adjustment ensure that the instrument has been turned on for at least 1 hour with the K type thermocouple connected between the instrument and the calibration source NOTE After each adjustment the ...

Page 101: ...0 9 to 1 1 reference input value 1000 V 100 V 70 Hz 0 9 to 1 1 reference input value 1000 V 70 Hz 0 9 to 1 1 reference input value 1000 V 2 kHz 0 9 to 1 1 reference input value AC current 40 A 02 00 A 70 Hz 0 9 to 1 1 reference input value 30 00 A 70 Hz 0 9 to 1 1 reference input value 400 A 030 0 A 70 Hz 0 9 to 1 1 reference input value 300 0 A 70 Hz 0 9 to 1 1 reference input value 1000 A 50 A 7...

Page 102: ...nce input value 1000 V 2 kHz 0 9 to 1 1 reference input value DC current Open OPEN Keep jaw closed without conductor 40 A 30 A 0 9 to 1 1 reference input value 400 A 300 A 0 9 to 1 1 reference input value 1000 A 300 A 0 9 to 1 1 reference input value AC current 40 A 02 00 A 70 Hz 0 9 to 1 1 reference input value 30 00 A 70 Hz 0 9 to 1 1 reference input value 400 A 030 0 A 70 Hz 0 9 to 1 1 referenc...

Page 103: ...T Short V and COM terminals 4 V 3 000 V 0 9 to 1 1 reference input value 40 V 30 00 V 0 9 to 1 1 reference input value 400 V 300 0 V 0 9 to 1 1 reference input value 1000 V 1000 V 0 9 to 1 1 reference input value AC voltage 4 V 0 200 V 70 Hz 0 9 to 1 1 reference input value 3 000 V 70 Hz 0 9 to 1 1 reference input value 3 000 V 2 kHz 0 9 to 1 1 reference input value 40 V 030 0 V 70 Hz 0 9 to 1 1 r...

Page 104: ...to 1 1 reference input value Resistance Short SHORT Short Ω and COM terminals 10 MΩ OPEN Open terminals 10 000 MΩ 0 9 to 1 1 reference input value 400 kΩ 300 0 kΩ 0 9 to 1 1 reference input value 40 kΩ 30 00 kΩ 0 9 to 1 1 reference input value 4 kΩ 3 000 kΩ 0 9 to 1 1 reference input value 400 Ω 300 0 Ω 0 9 to 1 1 reference input value Capacitance Open OPEN Open terminals 4 µF 0 300 µF 0 9 to 1 1 ...

Page 105: ... V 2 000 V 0 9 to 1 1 reference input value Short SHORT Short V and COM terminals 0 4 V 0 400 V 0 9 to 1 1 reference input value K type 000 0 C Provide 0 C with ambient compensation Table 6 7 U1213A valid adjustment reference input values continued Function Range Reference input value Valid range for reference input ...

Page 106: ...he instrument maintenance records Adjustment procedures The calibration procedures are shown as follows 1 Press Range Auto for more than 1 second while rotating the rotary switch to the function you wish to adjust 2 Unsecure the clamp meter Refer to Unsecuring the instrument for calibration on page 97 3 After verifying that the security code entered is correct the instrument will indicate the refe...

Page 107: ...he word PASS will be shown momentarily and then the instrument will proceed to the next adjustment item If the reading is out of the acceptable range it will remain at the present adjustment item after showing the error code for 3 seconds In this case you need to check whether the correct reference input has been applied Refer to Error codes and their respective meanings on page 115 for the meanin...

Page 108: ...1211A U1212A and U1213A User s and Service Guide Figure 6 3 Typical adjustment process flow Press for edit mode Press to start calibration If pass After brief display After brief display If fail Press or to set standard value Press to start calibration ...

Page 109: ...ent procedure to enter an input calibration value from the front panel 1 Press or refer to Table 4 1 on page 64 to select each digit in the primary display 2 Press or refer to Table 4 1 on page 64 to advance through the digits 0 to 9 3 Press Hold Max Min when you are done Verify the adjustments using Table 6 8 for U1211A Table 6 9 for U1212A and Table 6 10 for U1213A Table 6 8 U1211A list of adjus...

Page 110: ...Hrt 4 kΩ 3 000 kΩ 400 Ω 300 0 Ω Capacitance 400 µF 300 0 µF 4000 µF 3000 µF Diode Short 0 Ω 2 000 V 2 000 V Table 6 8 U1211A list of adjustment items continued Function Range Adjustment item Table 6 9 U1212A list of adjustment items Function Range Adjustment item AC voltage 400 V 30 00 V 70 Hz 300 00 V 70 Hz 300 00 V 2 kHz 1000 V 100 0 V 70 Hz 1000 0 V 70 Hz 1000 0 V 2 kHz DC voltage SHrt Short 40...

Page 111: ... 300 0 A 70 Hz 1000 A 50 A 70 Hz 300 A 70 Hz DC current Open oPEn 40 A 30 A 400 A 300 A 1000 A 300 A Resistance Short SHrt 4 kΩ 3 000 kΩ 400 Ω 300 0 Ω Capacitance 400 µF 300 0 µF 4000 µF 3000 µF Temperature Short SHrt 0 400 V 0 400 V K type 000 0 C Diode Short 0 Ω 2 000 V 2 000 V Table 6 9 U1212A list of adjustment items continued Function Range Adjustment item ...

Page 112: ...tage 4 V 0 200 V 70 Hz 3 000 V 70 Hz 3 000 V 2 kHz 40 V 03 00 V 70 Hz 30 00 V 70 Hz 30 00 V 2 kHz 400 V 30 00 V 70 Hz 300 00 V 70 Hz 300 00 V 2 kHz 1000 V 100 0 V 70 Hz 1000 0 V 70 Hz 1000 0 V 2 kHz DC voltage SHrt Short 4 V 3 000 V 40 V 30 00 V 400 V 300 0 V 1000 V 1000 V AC current 40 A 02 00 A 70 Hz 30 00 A 70 Hz 400 A 030 0 A 70 Hz 300 0 A 70 Hz 1000 A 50 A 70 Hz 300 A 70 Hz ...

Page 113: ...00 A 300 A Resistance Short SHrt 10 MΩ Open 400 kΩ 300 0 kΩ 40 kΩ 30 00 kΩ 4 kΩ 3 kΩ Capacitance Open oPEn 4 µF 0 300 µF 3 000 µF 40 µF 30 00 µF 400 µF 300 0 µF 4000 µF 3000 µF Temperature Short SHrt 0 400 V 0 400 V K type 000 0 C Diode Short 0 Ω 2 000 V 2 000 V Table 6 10 U1213A list of adjustment items continued Function Range Adjustment item ...

Page 114: ...the instrument is switched off Your clamp meter had been adjusted before leaving the factory When you receive your clamp meter make sure to read the adjustment count for the first time and record it for maintenance purpose The adjustment count increases up to a maximum of 9999 after which it wraps around to 0 There is no way to program or reset the adjustment count It is an independent electronic ...

Page 115: ...lists the various error codes for the calibration process Table 6 11 Error codes and their respective meanings Error code Description E002 Secure code invalid E003 Serial number code invalid E004 Calibration aborted E005 Value out of range E006 Signal measurement out of range E007 Frequency out of range E008 EEPROM write failure ...

Page 116: ...6 Performance Tests and Calibration 116 Keysight U1211A U1212A and U1213A User s and Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Page 117: ...ters User s and Service Guide 117 7 Characteristics and Specifications For the characteristics and specifications of the U1211A U1212A and U1213A Clamp Meters refer to the datasheet at http literature cdn keysight com litweb pdf 5990 5083EN pdf ...

Page 118: ...7 Characteristics and Specifications 118 Keysight U1211A U1212A and U1213A User s and Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Page 119: ...on is subject to change without notice Always refer to the Keysight website for the latest revision Keysight Technologies 2009 2017 Edition 16 June 30 2017 Printed in Malaysia U1211 90001 U1211 90001 www keysight com ...

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