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U1401A User’s and Service Guide

6

Maintenance

Troubleshooting

If the instrument fails to operate, check the batteries and
test leads. Replace them if necessary. After that, if the
instrument still does not function, check to ensure that you
have followed the operating procedures given in this
instruction manual, before considering servicing the
instrument.

Figure 6-3

Fuse replacement

Fuse 1

Fuse 2

WA R N I N G

To avoid electrical shock, do not perform any servicing unless you are
qualified to do so.

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Summary of Contents for U1401A

Page 1: ...Agilent Technologies U1401A Handheld Multi Function Calibrator Meter User s and Service Guide ...

Page 2: ...n this document that conflict with these terms the warranty terms in the sep arate 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 f...

Page 3: ...ting current Caution risk of electric shock Three phase alternating current Caution risk of danger refer to this manual for specific Warning or Caution information Earth ground terminal Caution hot surface Protective conductor terminal Out position of a bistable push control Frame or chassis terminal In position of a bistable push control Equipotentiality Category II 150 V overvoltage protection E...

Page 4: ...ing probes always disconnect the live test probe first Detach test probes from the instrument before you open the battery cover Do not use the instrument with the battery cover or part of the cover removed or loose Recharge or replace the battery as soon as the low battery indicator flashes on screen This is to avoid false readings which may lead to possible electric shock or personal injury Do no...

Page 5: ...fe operation can be verified by service trained personnel If necessary return the product to the nearest Agilent 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 capacitors in the circuit before you perform resistance and capacitance measurements or continuity and diode tests Use ...

Page 6: ...e Pollution Degree 2 CAUTION The Handheld Multi Function Calibrator Meter complies with the following safety and EMC requirements IEC 61010 1 2001 EN61010 1 2001 2nd Edition Canada CAN CSA C22 2 No 61010 1 04 USA ANSI UL 61010 1 2004 IEC61326 2 1 2005 EN61326 2 1 2006 Canada ICES 001 2004 Australia New Zealand AS NZS CISPR11 2004 CAUTION Degradation of some product specifications can occur in the ...

Page 7: ...ce with the Australia EMC Framework regulations under the terms of the Radio Communication Act of 1992 ICES NMB 001 indicates that this ISM device complies with the Canadian ICES 001 Cet appareil ISM est confomre a la norme NMB 001 du Canada This instrument complies with the WEEE Directive 2002 96 EC marking requirement This affixed product label indicates that you must not discard this electrical...

Page 8: ...tive 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 Agilent Technologies or visit www agilent com environment product for more information Agilent Technologies through Rechargeable Battery Recycling Corporation RBRC off...

Page 9: ...ailed information on how measurements are taken using the U1401A 4 Changing the Default Settings This chapter describes how to change the default settings of the U1401A 5 Application Examples This chapter describes some application examples for the U1401A 6 Maintenance This chapter will help you troubleshoot the U1401A for faults 7 Performance Tests and Calibration This chapter contains the perfor...

Page 10: ...f Conformity DoC for this instrument is available on the Web site You can search the DoC by its product model or description http regulations corporate agilent com DoC search htm NOTE If you are unable to search for the respective DoC please contact your local Agilent representative ...

Page 11: ... glance 8 The keypad at a glance 9 The display at a glance 13 The terminals at a glance 17 The rear panel at a glance 19 Display selection with the Hz key 20 Display selection with the DUAL key 22 Remote Communication 23 2 Calibrator Output Operations Enabling and Disabling the Output 28 Constant Voltage Operation 29 Constant Current Operation 30 Memory Generation 31 Autoscan output 31 Autoramp ou...

Page 12: ... 57 Dynamic recording 57 Relative zero 60 Triggering Operations 61 Data hold manual trigger 61 Refresh hold auto trigger 62 1 ms peak hold 63 4 Changing the Default Settings Entering the Setup Mode 66 Available Setting Options 68 Setting the data hold refresh hold mode 69 Setting the temperature unit 71 Setting the beeper frequency 73 Setting the minimum measurable frequency 74 Setting the percent...

Page 13: ...sistor BJT Test 98 Determining transistor hfe 102 Junction Field Effect Transistor JFET Switch Test 104 Operational Amplifier Verification 108 Current to voltage converter 108 Voltage to current converter 110 Integrator square wave to triangle wave conversion 111 2 Wire Transmitter Verification 113 Frequency Transmitter Verification 115 6 Maintenance Maintenance 118 General maintenance 118 Battery...

Page 14: ...cation 133 Output performance verification 137 Adjustment Considerations 138 Adjustment Procedures 139 Input calibration 139 Output calibration 140 8 Specifications General Specifications 144 Measurement Category 146 Measurement category definitions 146 Input Specifications 147 DC specifications 147 AC specifications 148 AC DC specifications 149 Temperature specifications 150 Frequency specificati...

Page 15: ...Contents U1401A User s and Service Guide XV Constant voltage and constant current outputs 155 Square wave output 156 ...

Page 16: ...XVI U1401A User s and Service Guide Contents ...

Page 17: ... 33 Table 2 2 Default settings for the autoramp output 37 Table 2 3 Available frequencies 41 Table 3 1 Measurement ranges for audible continuity 54 Table 4 1 Setup options and default settings 68 Table 5 1 Typical pressure range and maximum output voltages of millivolt output pressure transducers 92 Table 5 2 Base terminal according to probe test 99 Table 5 3 Polarity and terminals if Pin 3 is the...

Page 18: ...ifications 150 Table 8 7 Temperature specifications 150 Table 8 8 Frequency specifications 151 Table 8 9 Frequency sensitivity and trigger level specifications for voltage measurement 151 Table 8 10 Duty cycle specifications 152 Table 8 11 Pulse width specifications 152 Table 8 12 Frequency sensitivity specifications for current measurement 152 Table 8 13 Peak hold specifications 153 Table 8 14 Re...

Page 19: ...scan output 36 Figure 2 4 Selecting autoramp output mode 38 Figure 2 5 Ramp output 38 Figure 2 6 Defining the autoramp output 40 Figure 2 7 Parameter selection for square wave output 43 Figure 3 1 DC voltage measurement 47 Figure 3 2 AC voltage measurement 48 Figure 3 3 DC current mA measurement 49 Figure 3 4 Surface temperature measurement 53 Figure 3 5 Resistance measurement 55 Figure 3 6 Enabli...

Page 20: ...ent loop with the source mode 87 Figure 5 2 mA output simulation 89 Figure 5 3 Use the yellow test lead to perform the 2 wire transmitter simulation 91 Figure 5 4 Pressure transducer measurement 93 Figure 5 5 Zener diode test 95 Figure 5 6 Diode test 97 Figure 5 7 TO 92 Transistor 98 Figure 5 8 TO 3 Transistor 101 Figure 5 9 Determining transistor hfe 103 Figure 5 10 TO 92 JFET 104 Figure 5 11 N C...

Page 21: ...lide switch 5 The front panel at a glance 7 The rotary switch at a glance 8 The keypad at a glance 9 The display at a glance 13 The terminals at a glance 17 The rear panel at a glance 19 Display selection with the Hz key 20 Display selection with the DUAL key 22 Remote Communication 23 This chapter contains a brief description of the U1401A Handheld Multi Function Calibrator Meter front panel rota...

Page 22: ... mA measurement Load driving capability up to 1200 Ω for 20 mA simulation with yellow test lead Adjustable steps and time interval for Autoscan Adjustable resolutions and start for linear Ramp output 1 ms peak hold to catch inrush voltage and current easily Temperature measurement with selectable 0 C compensation Frequency duty cycle and pulse width measurements Dynamic recording for minimum maxim...

Page 23: ...Function Calibrator Meter Carrying case Protective holster Rechargeable battery pack 1 2 V NiMH AA 8 Power cord and AC power adapter Silicone test leads 19 mm probes Alligator clips Yellow test lead for mA simulation Certificate of calibration Printed Quick Start Guide If anything is missing contact your nearest Agilent Technologies Sales and Service Office ...

Page 24: ...country Carrying case Calibrator and meter standard test lead kit Yellow test lead for mA simulation Certificate of calibration Product reference CD Printed Quick Start Guide one English one local language Optional U1186A K type thermocouple input adapter and probe bundle U1184A K type thermocouple input adapter U1181A K type immersion probe U1182A Industrial surface probe U1183A Air probe U1160A ...

Page 25: ...ly the measurement functions M S Select this position to enable both the measurement and source functions Figure 1 1 The slide switch Table 1 2 Slide switch functions No Description Function 1 External AC adapter jack Allows an external AC adapter to be connected to provide power or charge the batteries 2 CHARGE Charges the batteries with an external AC adapter 3 M Enables only the measurement fun...

Page 26: ...ser s and Service Guide 1 Getting Started 5 Slide Switch 6 Charging indication Indicates the charging process GREEN Fully charged YELLOW Charging Table 1 2 Slide switch functions continued No Description Function ...

Page 27: ...Getting Started 1 U1401A User s and Service Guide 7 The front panel at a glance Figure 1 2 The front panel Display Keypad Rotary switch Terminals ...

Page 28: ...tput source function while the inner circle indicates the input meter function Figure 1 3 The rotary switch Table 1 3 Rotary switch positions and their corresponding functions No Description Function Input white Output yellow 1 OFF 2 DC AC or AC DC voltage measurements Square wave output Constant current 25 mA Constant voltage 1 5 V 15 V 3 DC AC or AC DC mV measurements or temperature measurement ...

Page 29: ...ning the rotary switch to another position resets the present operation of the key Figure 1 4 Keypad functions 5 Diode and continuity tests Constant current 25 mA 6 DC AC or AC DC mA measurements 50 mA or 500 mA Constant voltage 1 5 V 15 V Constant current 25 mA Square wave output Table 1 3 Rotary switch positions and their corresponding functions No Description Function Input white Output yellow ...

Page 30: ...he next measured value Exits data hold mode 1 If the refresh hold mode is enabled Enters or exits the refresh hold mode MAX MIN 2 Cycles through MAX MIN AVG and present MAX AVG MIN readings in dynamic recording mode Enters or exits the dynamic recording mode 1 3 REL Saves the displayed value as a reference to be subtracted from subsequent measurements Toggles between mV and temperature tests 4 RAN...

Page 31: ...r keys Toggles backlight ON OFF 8 3 MODE Selects output modes for constant voltage constant current autoscan and autoramp Selects frequency Hz duty cycle pulse width ms and level adjustments for square wave output Enters the adjustment mode for autoscan and autoramp outputs 9 3 Selects a digit or the polarity to be adjusted The selected digit polarity will be flashing on the secondary display 10 3...

Page 32: ...is manual instructions that involve shifted functions will be given without explicit mention of the SHIFT key Refer to Table 1 5 on page 12 for a list of such instructions and what you will need to do 1 If the shifted functions are not already enabled Table 1 5 Instructions involving shifted functions Instruction Required actions Press MODE Press SHIFT 1 then press Press Press SHIFT 1 then press P...

Page 33: ...ne viewing the full display press any key to resume the normal function depending on the rotary switch position The instrument will then enter power save mode if the auto power off feature is enabled To wake the instrument up perform the following steps 1 Turn the rotary switch knob to the OFF position 2 Then turn the rotary switch to any position other than square wave output and press any key Fi...

Page 34: ...play annunciator Description Remote control Scan output Ramp output Shifted functions enabled AUTO Autorange Relative mode Low battery indication Auto power off enabled Square wave output Frequency Hz duty cycle pulse width ms and level for square wave output Constant current output Constant voltage output ...

Page 35: ...ible continuity Audible continuity for resistance DH Trigger manual hold MAXAVGMIN Dynamic recording mode Present value on primary display MAX Dynamic recording mode Maximum value on primary display AVG Dynamic recording mode Average value on primary display MIN Dynamic recording mode Minimum value on primary display ACDC Alternating direct current Primary display for input Table 1 6 Description o...

Page 36: ...ger slope Positive slope for pulse width ms and duty cycle measurement Negative slope for pulse width ms and duty cycle measurement Percentage scale for 0 to 20 mA and 4 to 20 mA current measurement Without ambient temperature compensation Table 1 6 Description of display annunciators continued LCD display annunciator Description ...

Page 37: ...d in Table 1 8 The other two terminals are for output functions with DC 30 V overload protection WARNING To avoid damaging this instrument do not exceed the rated input limit Table 1 7 Description of terminals No Description Function 1 OUTPUT Yellow For constant voltage constant current and square wave output functions 2 INPUT Grey white For voltage current and resistance measurements and diode an...

Page 38: ...load protection for the input terminals Rotary switch position Input terminal Overload protection AC DC voltage range 5 V to 250 V and 250 Vrms AC DC voltage range 50 mV to 500 mV Ohm Ω Diode Temperature AC DC current range 50 mA to 500 mA 250 V 630 mA fast acting fuse ...

Page 39: ...Getting Started 1 U1401A User s and Service Guide 19 The rear panel at a glance Figure 1 8 The rear panel ...

Page 40: ...y Press this key again to step through frequency Hz duty cycle or pulse width ms This allows simultaneous monitoring of real time voltage or current with frequency duty cycle or pulse width After you press and hold for more than one second the primary display will revert to voltage or current measurement values Table 1 9 Measurement functions and corresponding display selection with the Hz key Mea...

Page 41: ...C DC current Duty cycle Pulse width ms Current in percentage scale 0 mA to 20 mA or 4 mA to 20 mA Frequency Hz Current in percentage scale 0 mA to 20 mA or 4 mA to 20 mA Duty cycle Pulse width ms Table 1 9 Measurement functions and corresponding display selection with the Hz key continued Measurement function Primary display Secondary display ...

Page 42: ...1 10 Measurement functions and corresponding display selection with the DUAL key Measurement function Primary display Secondary display AC voltage AC voltage Hz AC coupling DC voltage DC voltage Hz DC coupling AC DC voltage AC DC voltage Hz AC coupling DC current DC current Hz DC coupling AC current AC current Hz AC coupling AC DC current AC DC current Hz AC coupling Current in percentage scale 0 ...

Page 43: ...software has been installed on your computer 3 Attach the optic side of the cable to the communication port on the instrument Make sure that the text side is facing upwards See Figure 1 10 on page 25 4 Plug the other end of the USB cable terminal into the USB port of your personal computer 5 Use the data transfer software to retrieve the data that you need 6 Press the flaps to remove the cable fro...

Page 44: ... reattach the cover simply slip the cover over the connector Make sure that the text on the cover is on the same side as the text on the top case of the connector You will hear a click when the cover snaps properly into its place Figure 1 9 IR USB cable ...

Page 45: ...ice Guide 25 Figure 1 10 IR USB cable connection Figure 1 11 IR USB cable Text side facing upward IR USB cable Press this flap while moving in the direction indicated by the arrows to connect or disconnect the IR USB cable Disconnect Connect ...

Page 46: ...26 U1401A User s and Service Guide 1 Getting Started ...

Page 47: ... 2 Calibrator Output Operations Enabling and Disabling the Output 28 Constant Voltage Operation 29 Constant Current Operation 30 Memory Generation 31 Autoscan output 31 Autoramp output 36 Square Wave Output 41 This chapters contains detailed information on how to generate signals using the U1401A ...

Page 48: ...ou accidentally feed an external signal into the output terminals while the output function is enabled the noise from an external power system or output terminals causes an error signal to the output For example when ESD is performed with a voltage of 8000 V this instrument will go into standby mode an overload condition has been detected when generating constant voltage or square wave outputs the...

Page 49: ...es Select either 1 5 V or 15 V for constant output or steady output as opposed to autoscan or autoramp outputs which will be discussed under Memory Generation on page 31 depending on the voltage range you require Unlike the autoscan and autoramp modes there is no special annunciator on the display to indicate constant voltage CV operation 4 With the instrument in standby mode you should see the an...

Page 50: ...odes Select the 25 mA output mode for constant output or steady output as opposed to autoscan or autoramp outputs which will be discussed under Memory Generation on page 31 Unlike the autoscan and autoramp modes there is no special annunciator on the display to indicate constant current CC operation 4 With the instrument in standby mode you should see the annunciator on the display if not press OU...

Page 51: ...nd number of steps for linear simulation Autoscan output To set the autoscan output 1 Turn the rotary switch to any one of the constant current output or constant voltage output positions 2 Press SHIFT to access the shifted operations of the keypad The annunciator will appear on the display 3 Follow one of the instructions below For voltage output press MODE to cycle through 1 5 V 15 V 1 5 V 15 V ...

Page 52: ... amplitudes and time intervals defined in the memory starting from step 1 until the step where the time interval is 00 second The output level will then be maintained at the amplitude of the last step before the zero interval step For instance according to the default settings the output signal will follow step 1 through step 11 and then remain at step 11 Step mode StEP This is a step by step outp...

Page 53: ...02 sec 5 0 3000 V 02 sec 03 000 V 02 sec 16 000 mA 02 sec 6 0 0000 V 02 sec 00 000 V 02 sec 20 000 mA 02 sec 7 0 3000 V 02 sec 03 000 V 02 sec 16 000 mA 02 sec 8 0 6000 V 02 sec 06 000 V 02 sec 12 000 mA 02 sec 9 0 9000 V 02 sec 09 000 V 02 sec 08 000 mA 02 sec 10 1 2000 V 02 sec 12 000 V 02 sec 04 000 mA 02 sec 11 1 5000 V 02 sec 15 000 V 02 sec 00 000 mA 02 sec 12 0 0000 V 00 sec 00 000 V 00 sec...

Page 54: ...34 U1401A User s and Service Guide 2 Calibrator Output Operations Figure 2 1 Selecting autoscan output mode Press or Press or Press or Figure 2 2 Example of a typical autoscan output ...

Page 55: ...te time interval 1 Press MODE to cycle through step time interval and amplitude adjustments The digit to be adjusted will flash on the display For amplitude adjustment press and to select the digit to be adjusted then press and to adjust the value of the selected digit The amplitude can be set to any value within the selected output range 1 5 V or 15 V for constant voltage output 25 mA for constan...

Page 56: ...nunciator will appear on the display 3 Follow one of the instructions below For voltage output press MODE to cycle through 1 5 V 15 V 1 5 V 15 V 1 5 V and 15 V output modes Select either of the two autoramp output modes depending on the voltage range you require For current output press MODE to cycle through 25 mA 25 mA and 25 mA output modes Select the output mode Figure 2 3 Defining the autoscan...

Page 57: ...eps 0 2 V for 1 5000 V The step size of the negative slope is start amplitude end amplitude number of steps Therefore the step size is 1 5 V 1 5 V 15 steps 0 2 V for 1 5000 V Cycle mode CyCLE In this mode only one cycle of the ramp signal is generated The signal will be generated according to the amplitudes and number of steps defined in the memory with each step taking approximately 0 33 seconds ...

Page 58: ...e number of steps between the start and end positions or the end and start positions and the amplitudes of the start and end positions When the U1401A is in the autoramp adjustment mode the secondary display shows the amplitude of the start or end position The first digit on the left of the primary display is Figure 2 5 Ramp output Press or Press or Size of each step end amplitude start amplitude ...

Page 59: ...ss and to select the digit to be adjusted then press and to adjust the value of the selected digit The amplitude can be set to any value within the selected output range 1 5 V or 15 V for constant voltage output 25 mA for constant current output For adjusting the number of steps press and to select the digit to be adjusted then press and to adjust the value of the selected digit The number of step...

Page 60: ...401A User s and Service Guide 2 Calibrator Output Operations Figure 2 6 Defining the autoramp output Press MODE Press MODE End amplitude Start amplitude Start position End position 1 to 99 steps 1 999 steps ...

Page 61: ...on 2 Press SHIFT to access the shifted operations of the keypad The annunciator will appear on the display The default settings for the parameters are 150 Hz frequency 50 00 duty cycle 3 3333 ms pulse width and 5 V amplitude See Figure 2 7 3 Press OUTPUT to output the square wave signal There are 28 frequencies to choose from See Table 2 3 To change the frequency 1 Press SHIFT to access the shifte...

Page 62: ...or will appear on the display 2 Press or to adjust the duty cycle The pulse width can be stepped through 256 equal steps with each step being equal to 1 256 frequency You can set its value from 1 to 255 steps To adjust the pulse width 1 Press MODE to select pulse width adjustment The annunciator will appear on the display 2 Press or to adjust the pulse width The amplitude can be set as 5 V 5 V 12 ...

Page 63: ...Calibrator Output Operations 2 U1401A User s and Service Guide 43 Figure 2 7 Parameter selection for square wave output Press MODE Press Press MODE Press MODE MODE ...

Page 64: ...44 U1401A User s and Service Guide 2 Calibrator Output Operations ...

Page 65: ...age scale of DC mA measurement 50 Measuring Temperature 51 Measuring Resistance and Testing Continuity 54 Alerts and Warning During Measurement 56 Overload alert for voltage measurement 56 Math Operations 57 Dynamic recording 57 Relative zero 60 Triggering Operations 61 Data hold manual trigger 61 Refresh hold auto trigger 62 1 ms peak hold 63 This chapter contains the detailed information on how ...

Page 66: ...he rotary switch to 2 Press to select DC voltage measurement 3 Connect the red and black test leads to the positive and negative input terminals respectively Figure 3 1 on page 47 4 Probe the test points and read the display WARNING Make sure that the terminal connections are correct for a particular measurement before making the measurement To avoid damaging the U1401A do not exceed the rated inp...

Page 67: ...Making Measurements 3 U1401A User s and Service Guide 47 Figure 3 1 DC voltage measurement ...

Page 68: ... AC voltage 1 Turn the rotary switch to 2 Press to select AC voltage measurement 3 Connect the red and black test leads to the positive and negative input terminals respectively Figure 3 2 4 Probe the test points and read the display Figure 3 2 AC voltage measurement ...

Page 69: ...nt 1 Turn the rotary switch to 2 Press to select DC current measurement 3 Connect the red and black test leads to the positive and negative input terminals respectively 4 Probe the test points in series with the circuit and read the display see Figure 3 3 Figure 3 3 DC current mA measurement ...

Page 70: ... mA in the Setup mode refer to Chapter 4 Setting the percentage scale readout 2 Turn the rotary switch to 3 Press to select percentage scale display for DC mA measurement 4 Connect the red and black test leads to the positive and negative input terminals respectively 5 Probe the test points in series with the circuit and read the display The inset display in Figure 3 3 shows the percentage scale r...

Page 71: ...you get the highest temperature reading When measuring below the ambient temperature move the thermocouple along the surface until you get the lowest temperature reading Always set the slide switch to the M position meter operation only Place the instrument in the operating environment for at least one hour as the instrument is using a non compensation transfer adapter with miniature thermal probe...

Page 72: ...re 3 4 on page 53 5 Touch the surface to be measured with the thermocouple probe 6 Read the display If you are working in a constantly varying environment where the ambient temperature is not constant follow these steps 1 Press to select 0 C compensation This allows a quick measurement of the relative temperature 2 Avoid contact between the thermocouple probe and the surface to be measured 3 After...

Page 73: ...Making Measurements 3 U1401A User s and Service Guide 53 Figure 3 4 Surface temperature measurement ...

Page 74: ...e continuity function ON or OFF For the 500 Ω range the instrument will beep if the resistance value falls below 10 Ω For other ranges the instrument will beep if the resistance falls below the typical values indicated in the table below CAUTION Disconnect circuit power and discharge all high voltage capacitors before measuring resistance to prevent possible damage to the instrument or the device ...

Page 75: ...Making Measurements 3 U1401A User s and Service Guide 55 Figure 3 5 Resistance measurement Figure 3 6 Enabling and disabling the continuity test Press ...

Page 76: ...oltage measurement in both auto and manual range modes The instrument starts to beep periodically once the measured voltage exceeds 251 V Immediately remove the test leads from the source being measured WARNING For your own safety please do not ignore the overload alert When the instrument gives you an overload alert immediately remove the test leads from the source being measured ...

Page 77: ...namic recording mode The instrument is now in continuous mode non data hold mode and the instrument will display the MAX AVG MIN annunciator and the present instantaneous reading The instrument will constantly calculate and update the average measured value in the memory Whenever a new maximum or minimum value is recorded the instrument will beep once 2 Press MAX MIN to cycle through the maximum m...

Page 78: ...o power off feature will be disabled This is indicated by the absence of the annunciator on the display When performing dynamic recording in autorange the maximum minimum and average readings may be recorded in different ranges The recording interval in manual range is approximately 0 067 seconds The average value is the true average of all measured values taken since the recording mode was activa...

Page 79: ...Making Measurements 3 U1401A User s and Service Guide 59 Figure 3 7 Dynamic recording mode Press 1 s Press 1 s Press 1 s Press 1 s Press Press Press Press ...

Page 80: ...s but it cannot be set if the present reading is overload OL 3 Press to exit the relative mode There are two possible applications For a resistance measurement the display will read a non zero value even when no measurement is being taken due to the resistance of the test leads You can use the relative function to zero adjust the reading For a DC voltage measurement the thermal effect will influen...

Page 81: ...ue 1 Press to freeze the currently displayed value and enter the manual trigger mode The DH annunciator will appear on the display 2 Press the key again to trigger another new measured value and update the display The DH annunciator will flash momentarily before the new update 3 Press for more than one second to exit this mode Figure 3 9 Data hold mode Press ...

Page 82: ...r will appear on the display It will be ready to hold the new measured value once the variation of the instantaneous reading exceeds the preset variation count defined in setup mode while it waits for a stable new reading the DH annunciator will flash The DH annunciator will stop flashing once a stable new reading is available and then the new value will be updated to the display The instrument wi...

Page 83: ... True rms value To measure the half cycle peak voltage 1 Press for more than one second to toggle 1 ms peak hold mode on or off 2 Press to show the peak or peak value after activating the peak mode The DH MAX annunciator indicates the peak value while the DH MIN annunciator indicates the peak value See Figure 3 10 on page 64 3 If the reading is OL press to change the measurement range and restart ...

Page 84: ...64 U1401A User s and Service Guide 3 Making Measurements Figure 3 10 1 ms peak hold mode Press 1 s Press Press to restart Press to change range Press 1 s ...

Page 85: ...e 69 Setting the temperature unit 71 Setting the beeper frequency 73 Setting the minimum measurable frequency 74 Setting the percentage scale readout 75 Setting the print mode 76 Setting the echo mode 77 Setting the data bit 78 Setting the parity check 79 Setting the baud rate 80 Setting the display backlight timer 81 Setting the power saving mode 82 This chapter describes how to change the defaul...

Page 86: ...tings Entering the Setup Mode To enter the setup mode perform the following steps 1 Turn the instrument off 2 From the OFF position turn the rotary switch to any non OFF position while pressing and holding Figure 4 1 Entering the setup mode Press and hold Turn on ...

Page 87: ...lowing steps i Press or to scroll through the available menu items ii Press or to change or select the setting See Table 4 1 on page 68 for details on the available options iii Press to save the changes These parameters will remain in the non volatile memory 4 Press SHIFT for more than one second to exit the setup mode 3 4 5 6 ...

Page 88: ...ions can be selected C only C F F only F C d C bEEP Beep 4800 Hz 2400 Hz 1200 Hz 600 Hz Sets the beeper frequency 4800 Hz OFF Disables the beeper FrEq Minimum frequency measurement 0 5 Hz 1 Hz 2 Hz Sets the minimum frequency that can be measured 0 5 Hz PECnt Percentage scale 4 20mA 0 20mA Selects which percent scale readout is used 4 20 mA Print Print On or OFF ON Enables automatic and continuous ...

Page 89: ...old mode will be ready to trigger and update a new value PArtY Parity En odd or nonE Sets even odd or no parity check for remote communication with a PC remote control nonE bAud Baud rate 2400 Hz 4800 Hz 9600 Hz 19200 Hz Sets baud rate for remote communication with a PC remote control 9600 Hz bLit Display backlight timer 1 to 99 s Sets the timer for automatically turning off the LCD display backli...

Page 90: ...70 U1401A User s and Service Guide 4 Changing the Default Settings Figure 4 2 Setting the data hold or refresh hold mode Press Press Press Press Press 5 5 5 5 6 6 6 6 ...

Page 91: ... temperature unit display are available Celsius only C on the primary display Celsius C on the primary display and Fahrenheit F on the secondary display for dual display setting Fahrenheit only F on the primary display Fahrenheit F on the primary display and Celsius C on the secondary display for dual display setting ...

Page 92: ...er s and Service Guide 4 Changing the Default Settings Figure 4 3 Setting the temperature unit Press SHIFT for more than one second to enable temperature unit menu item Press Press Press Press Press 5 5 5 5 6 6 6 6 ...

Page 93: ...and Service Guide 73 Setting the beeper frequency The beeper frequency can be set to 4800 Hz 2400 Hz 1200 Hz or 600 Hz OFF means the beeper is disabled Figure 4 4 Setting the beeper frequency Press Press Press Press Press 5 5 5 5 6 6 6 6 Press 5 6 ...

Page 94: ...rable frequency This setting will influence the measurement rates for frequency duty cycle and pulse width The typical measurement rate as defined in the general specifications is based on a minimum frequency of 1 Hz Figure 4 5 Setting the minimum frequency Press Press Press Press 5 5 5 6 6 6 ...

Page 95: ...asurement display to a percentage scale readout from 0 to 100 based on a range of 4 mA to 20 mA or 0 mA to 20 mA For example a 25 readout represents DC 8 mA for the 4 mA to 20 mA range or DC 5 mA for the 0 mA to 20 mA range You may choose between the two available ranges Figure 4 6 Setting the percentage scale readout Press Press Press 5 5 6 6 ...

Page 96: ... connected to the instrument for remote communication when a measurement cycle is completed In this mode the instrument automatically and continuously sends the latest data to the host but does not accept any commands from the host The annunciator flashes during the Print operation Figure 4 7 Setting the print mode for remote control Press Press Press 5 5 6 6 ...

Page 97: ...turn of characters to a PC in remote communication which is useful when developing PC programs with SCPI commands NOTE This mode is for internal use by Agilent Technologies only During normal operation it is recommended that you disable this function Figure 4 8 Setting the echo mode for remote control Press Press Press 5 5 6 6 ...

Page 98: ...tings Setting the data bit The number of data bits data width for remote communication with a PC can be set to either 8 bits or 7 bits There is only one stop bit which cannot be changed Figure 4 9 Setting the data bit for remote control Press Press Press 5 5 6 6 ...

Page 99: ...1A User s and Service Guide 79 Setting the parity check The parity check for remote communication with a PC can be set to either none even or odd Figure 4 10 Setting the parity check for remote control Press Press Press 5 5 6 6 Press 5 6 ...

Page 100: ...the Default Settings Setting the baud rate The baud rate used in the remote communication with a PC can be set as 2400 Hz 4800 Hz 9600 Hz or 19200 Hz Figure 4 11 Setting the baud rate for remote control Press Press Press Press Press 5 5 5 5 6 6 6 6 ...

Page 101: ...y backlight timer The display 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 12 Setting the display backlight timer Press Press Press Press Press 5 5 5 5 6 6 6 6 ...

Page 102: ...cording mode is activated The 1 ms peak hold mode is activated The auto power off feature has been disabled in the setup mode The output has been enabled the annunciator is displayed To reactivate the instrument after auto power off turn the rotary switch to the OFF position and then turn it on again If the instrument is to be used for a long period of time you may want to disable the auto power o...

Page 103: ...Changing the Default Settings 4 U1401A User s and Service Guide 83 Figure 4 13 Setting the auto power off mode Press Press Press Press Press 5 5 5 5 6 6 6 6 ...

Page 104: ...84 U1401A User s and Service Guide 4 Changing the Default Settings ...

Page 105: ...cer 92 Zener Diode Test 94 Diode Test 96 Bipolar Junction Transistor BJT Test 98 Determining transistor hfe 102 Junction Field Effect Transistor JFET Switch Test 104 Operational Amplifier Verification 108 Current to voltage converter 108 Voltage to current converter 110 Integrator square wave to triangle wave conversion 111 2 Wire Transmitter Verification 113 Frequency Transmitter Verification 115...

Page 106: ...or leads into the positive and negative output terminals respectively 3 Connect the red and black alligator clips to the current loop Make sure that the polarity is correct 4 Press SHIFT to access the shifted operations of the keypad The annunciator will appear on the display 5 Set the output level at 08 000 mA to get a 25 scale readout for 4 mA to 20 mA 6 Press OUTPUT to start the source output T...

Page 107: ...Application Examples 5 U1401A User s and Service Guide 87 Figure 5 1 Testing a 4 mA to 20 mA current loop with the source mode Red Black ...

Page 108: ... the black alligator lead between the COM terminal of the loop source and the negative terminal of the measurement device on the current loop 4 Connect the red alligator lead between the negative output terminal of the instrument and the positive terminal of the current loop source Make sure the polarity is correct 5 Set the current level of the calibrator between 0 mA and 20 mA Do not set a negat...

Page 109: ...lication Examples 5 U1401A User s and Service Guide 89 CAUTION Do not apply an external voltage exceeding 30 V across the output terminals of the instrument Figure 5 2 mA output simulation Red Yellow Black ...

Page 110: ...of the or positions 2 Connect the special yellow test lead between the positive output terminal of the instrument and the input terminal of the measurement device on the current loop Refer to Figure 5 3 on page 91 3 Connect the black alligator lead between the negative output terminal of the instrument and the current loop excitation source Make sure the polarity is correct 4 Set the current level...

Page 111: ...xamples 5 U1401A User s and Service Guide 91 Figure 5 3 Use the yellow test lead to perform the 2 wire transmitter simulation Yellow Black Always use yellow test lead to perform mA simulation Input Excitation source ...

Page 112: ...to the positive and negative input terminals respectively 3 Probe the test points Figure 5 4 on page 93 and read the display Table 5 1 Typical pressure range and maximum output voltages of millivolt output pressure transducers Pressure range Maximum output voltage 0 PSIG to 5 PSIG 50 mV 0 PSIG to 15 PSIG 100 mV 0 PSIG to 30 PSIG 80 mV 0 PSIG to 60 PSIG 60 mV 0 PSIG to 100 PSIG 100 mV 0 PSIG to 150...

Page 113: ...Application Examples 5 U1401A User s and Service Guide 93 Figure 5 4 Pressure transducer measurement White Green Lead wires 1 Red V 2 White Out 3 Black V 4 Green Out ...

Page 114: ...nect the black alligator lead between the negative output terminal and the negative cathode side of the zener diode 4 Connect the red and black probe leads to the input terminals 5 Output a constant current of 1 mA then measure the forward voltage of the zener diode 6 Output a constant current of 1 mA then measure the breakdown voltage of the zener diode CAUTION To avoid damaging the instrument di...

Page 115: ...Application Examples 5 U1401A User s and Service Guide 95 Figure 5 5 Zener diode test ...

Page 116: ...e side of the diode with the red lead and the negative cathode side with the black lead 4 Reverse the probe leads and measure the voltage across the diode again 5 If the diode is Good In step 3 a forward voltage drop typically from 0 3 V to 0 8 V is indicated the instrument can display diode voltage drops up to approximately 2 1 V accompanied by a beep In step 4 OL is indicated Shorted A voltage d...

Page 117: ...Application Examples 5 U1401A User s and Service Guide 97 Figure 5 6 Diode test Forward bias Red Reverse bias Red Black Black ...

Page 118: ...position 2 Connect the red and black test leads to the positive and negative input terminals respectively The positive terminal will provide a positive test voltage 3 In this example we will use a BJT with TO 92 package as shown in Figure 5 7 4 Probe pin 1 with the red test lead and pin 2 with the black test lead If the measured value is OL reverse the probes If the measured value is still OL you ...

Page 119: ...Table 5 4 and Table 5 5 Vbe is always greater than Vbc Most TO 92 transistors will have pin 1 as the emitter It is recommended that you check and verify with the specific data sheet from the manufacturer Table 5 2 Base terminal according to probe test Pin Probe Base Red Black Black Red 1 2 OL OL 3 1 3 OL OL 2 2 3 OL OL 1 Table 5 3 Polarity and terminals if Pin 3 is the base Test leads Pins Termina...

Page 120: ...ase Test leads Pins Terminals Vbe Vbc Type 2 1 2 3 Red Black 0 6749 V 0 6723 V EBC NPN 0 6723 V 0 6749 V CBE NPN Black Red 0 6749 V 0 6723 V EBC PNP 0 6723 V 0 6749 V CBE PNP Table 5 5 Polarities and terminals if Pin 1 is the base Test leads Pins Terminals Vbe Vbc Type 1 2 1 3 Red Black 0 6749 V 0 6723 V BEC NPN 0 6723 V 0 6749 V BCE NPN Black Red 0 6749 V 0 6723 V BEC PNP 0 6723 V 0 6749 V BCE PN...

Page 121: ... to demonstrate how the polarity and terminals are identified According to the previous procedure pin 2 is the base Figure 5 8 TO 3 Transistor Table 5 6 Polarity and terminals if Pin 2 is the base Test leads Pins Terminals Vbe Vbc Type 2 1 2 3 Red Black 0 5702 V 0 5663 V EBC NPN Normally the case is the collector terminal 3 ...

Page 122: ...he measured current value this is IC For PNP type BJT 1 Turn the rotary switch to the position 2 Connect the base to the positive output terminal 3 Connect the collector to the negative output terminal and the positive terminal of a DC power supply which supplies the required VDD 4 Connect the emitter to the negative input terminal 5 Connect the negative terminal of the DC power supply to the posi...

Page 123: ...Application Examples 5 U1401A User s and Service Guide 103 Figure 5 9 Determining transistor hfe hfe IC IB 152 IB Current source hfe IC IB 300 IC Meter reading ...

Page 124: ...e Ω position 2 Connect the red and black test leads to the positive and negative input terminals respectively The positive terminal will provide a positive test voltage 3 In this example we will use a JFET with TO 92 package as shown in Figure 5 10 4 Probe pin 1 with the red test lead and pin 2 with the black test lead Then reverse the test leads and obtain the reading If both readings are 1 kΩ yo...

Page 125: ...drain 6 Connect the black input probe lead to the source 7 Connect the red output alligator lead to the gate terminal through a 100 kΩ resistor and connect the black output alligator lead to the black input probe lead If RDS increases when VGS is a negative value then it is an n channel JFET On the other hand if RDS increases when VGS is a positive value then it is a p channel JFET Table 5 7 Gate ...

Page 126: ...ct the red output alligator lead to the gate terminal through a 100 kΩ resistor and connect the black output alligator lead to the black input probe lead 4 Gradually decrease the voltage output from 00 000 V to 15 000 V The RDS value will increase correspondingly Figure 5 11 on page 106 5 Observe at what point the resistance reading becomes OL the voltage bias level at that point would be the cuto...

Page 127: ...t the red output alligator lead to the gate terminal through a 100 kΩ resistor and connect the black output alligator lead to the black input probe lead 4 Gradually decrease the voltage output from 00 000 V to 15 000 V The RDS value will increase correspondingly Figure 5 12 on page 107 5 Observe at what point the resistance reading becomes OL the voltage bias level at that point would be the cutof...

Page 128: ...tage to current converter Current to voltage converter An ideal operational amplifier can act as a current to voltage converter In Figure 5 13 the ideal operational amplifier maintains its inverting input terminal at earth potential and forces any input current to flow through the feedback resistor Thus Iin If and Vo If x Rf Notice that the circuit provides the basis for an ideal current measureme...

Page 129: ...ant current of 00 000 mA into the operational amplifier and measure the offset voltage Vo 8 Gradually increase the U1401A output current from 00 000 mA to 12 000 mA while monitoring the output voltage of the operational amplifier The Vo value will increase correspondingly from around 00 000 V to around 12 000 V The actual Vo is influenced by the tolerance of the feedback resistor and the offset of...

Page 130: ...tput terminals respectively 5 Connect the operational amplifier as shown in Figure 5 14 6 Use a DC power supply with 15 V and 15 V outputs to power the operational amplifier 7 Gradually increase the U1401A output voltage from 00 000 mV to 06 000 V while measuring the output voltage of the operational amplifier You will find the output voltage increasing correspondingly from around 00 000 V to arou...

Page 131: ... proportional to the integral of the input voltage One of the many uses of this integrator is to convert a square wave into a triangle wave 1 Turn the rotary switch to the position 2 Connect the red and black alligator leads to the positive and negative output terminals respectively 3 Connect the operational amplifier as shown in Figure 5 15 on page 112 Figure 5 14 Voltage to current converter ...

Page 132: ...tional amplifier 5 Use an oscilloscope to monitor the output waveform 6 Set the square wave duty cycle to 50 00 and its amplitude to 5 V 7 Output the square wave 8 Select a different frequency and vary the duty cycle to further understand the characteristics of the integrator Figure 5 15 Square wave to triangular wave conversion ...

Page 133: ...tput terminal of the instrument and the positive output terminal of the two wire transmitter Refer to Figure 5 16 on page 114 3 Connect a shorting plug between the negative output terminal and negative input terminal of the instrument 4 Connect the black alligator lead between the positive input terminal of the instrument and the negative output terminal of the two wire transmitter 5 The supply ca...

Page 134: ...114 U1401A User s and Service Guide 5 Application Examples Figure 5 16 Verifying a two wire transmitter Red Black ...

Page 135: ...s 3 Set the output frequency to 150 Hz and duty cycle to 50 4 Connect the probe leads between the input terminals of the U1401A and the output terminals of the transducer 5 Connect the alligator leads between the output terminals of the U1401A and the input terminals of the transducer Make sure the polarity is correct 6 Press OUTPUT to output the signal 7 Read the display Check the measured curren...

Page 136: ...116 U1401A User s and Service Guide 5 Application Examples Figure 5 17 Verifying a frequency transmitter ...

Page 137: ...on Calibrator Meter User s and Service Guide 6 Maintenance Maintenance 118 General maintenance 118 Battery replacement 119 Recharging the batteries 121 Fuse replacement 122 Troubleshooting 124 This chapter will help you troubleshoot the U1401A for faults ...

Page 138: ...ylene acetone or similar chemicals Also do not spray cleaner liquid directly onto the instrument because it may seep into the case and cause damage Wipe the contacts in each terminal with a clean swab moistened in alcohol 4 Make sure the instrument has dried completely before using it CAUTION Repairs or services which are not covered in this manual should only be performed by qualified personnel W...

Page 139: ...s for battery replacement 1 Loosen the screw of the battery cover on the rear panel 2 Slide the cover to the left pull it up and remove it See Figure 6 1 3 It is recommended that you replace all the batteries 4 To close the battery cover reverse the procedures above WARNING The batteries contain nickel metal hydride and must be recycled or disposed off properly Remove all test leads and external a...

Page 140: ...120 U1401A User s and Service Guide 6 Maintenance Figure 6 1 Battery replacement Loosen the screw Slide the cover to the left side Replace all batteries ...

Page 141: ...ries have been fully recharged the green light turns on Remove the AC adapter and set the slide switch at the M or M S position WARNING Do not discharge a battery by shorting it or subjecting it to reverse polarity Do not mix different types of battery Make sure a battery is rechargeable before charging it NOTE A new rechargeable battery comes in a discharged condition and must be charged before u...

Page 142: ...se and remove the bottom cover 4 Take out the circuit board as shown in Figure 6 3 5 Gently remove the defective fuse by prying one end of the fuse loose and sliding it out of the fuse bracket 6 Replace it with a new fuse of the same size and rating Make sure the new fuse is centered in the fuse holder Figure 6 2 Recharging the batteries External AC adapter jack Charging indication Green Fully cha...

Page 143: ...lf on the circuit board remain at the OFF position 8 After replacing the fuse re fasten the circuit board and the bottom cover 9 Refer to Table 6 1 for the part number rating and size of the fuses Table 6 1 Fuse specifications Fuse Agilent part number Rating Size Type 1 2110 1464 630 mA 250 V 5 mm x 20 mm Fast blow ceramic type 2 2110 1463 63 mA 250 V 5 mm x 20 mm Slow blow UL VDE ...

Page 144: ...em if necessary After that if the instrument still does not function check to ensure that you have followed the operating procedures given in this instruction manual before considering servicing the instrument Figure 6 3 Fuse replacement Fuse 1 Fuse 2 WARNING To avoid electrical shock do not perform any servicing unless you are qualified to do so ...

Page 145: ...t while before being replaced by the annunciator The batteries are low Check the position of the slide switch Set it to the M S position Check the external load to see whether the rated limit is exceeded Check whether the loop has a 24 V power If yes use the special yellow test lead for mA simulation see Chapter 5 Simulation Mode for mA Output Check fuse 2 No charging indication Set the slide swit...

Page 146: ...126 U1401A User s and Service Guide 6 Maintenance ...

Page 147: ...alibration interval 129 Other recommendations for calibration 130 Environmental conditions 130 Warm up 130 Recommended Test Equipment 131 Performance Verification Tests 132 Self verification 132 Input performance verification 133 Output performance verification 137 Adjustment Considerations 138 Adjustment Procedures 139 Input calibration 139 Output calibration 140 This chapter contains the perform...

Page 148: ...s that the Handheld Multi Function Calibrator Meter is operating within its published specifications The adjustment procedure ensures that the multimeter remains within its specifications until the next calibration CAUTION TThis instrument should only be calibrated by qualified personnel with the appropriate equipment For detailed information about the calibration procedures please contact your ne...

Page 149: ...ibration adjustment is performed The contents of the non volatile EEPROM memory will not change even when the power is switched off Agilent Technologies calibration services When your instrument is due for calibration contact your local Agilent Service Center to inquire about recalibration services Calibration interval A one year calibration interval is adequate for most applications Accuracy spec...

Page 150: ...best long term stability During performance verification tests only the performance data is collected these tests do not guarantee that the instrument will remain within the specified limits The tests are only for identifying the functions which need adjustment Environmental conditions Calibration or verification tests should be performed under laboratory conditions where the ambient temperature o...

Page 151: ...ded test equipment Application Recommended equipment Recommended accuracy requirements DC Voltage Fluke 5520A 1 5 instrument 1 year spec DC Current Fluke 5520A 1 5 instrument 1 year spec Resistance Fluke 5520A 1 5 instrument 1 year spec AC Voltage Fluke 5520A 1 5 instrument 1 year spec AC Current Fluke 5520A 1 5 instrument 1 year spec Frequency Agilent 33250A 1 5 instrument 1 year spec Temperature...

Page 152: ...le 3 Connect the positive ends of input and output together 4 Connect the negative ends of input and output together 5 Set output value to 4 5000 V 6 Observe the measurement value in the primary display Refer to Table 7 2 for functions that can be self verified Table 7 2 is for reference only Refer to Chapter 8 Specifications on page 143 for the detailed specifications Table 7 2 Functions that can...

Page 153: ...520A Range 5520A output Error from nominal 1 year 1 Turn the rotary switch to mV Press to select DC Connect the Normal Hi Low output terminals of the calibrator to the U1401A input terminals 50 mV 0 05 V 75 µV 0 05 V 75 µV 500 mV 0 5 V 0 2 mV 0 5 V 0 2 mV Turn the rotary switch to Press to select DC 5 V 5 V 2 mV 5 V 2 mV 50 V 50 V 20 mV 50 V 20 mV 250 V 250 V 0 125 V 250 V 0 125 V 2 Turn the rotar...

Page 154: ...Hz 3 7 mVrms 500 mVrms 5 kHz 3 7 mVrms 500 mVrms 20 kHz 7 7 mVrms 5 V 5 Vrms 45 Hz 37 mVrms 5 Vrms 5 kHz 37 mVrms 5 Vrms 20 kHz 77 mVrms 50 V 50 Vrms 45 Hz 0 37 Vrms 50 Vrms 5 kHz 0 37 Vrms 50 Vrms 20 kHz 0 77 Vrms 250 V 250 Vrms 45 Hz 1 95 Vrms 250 Vrms 5 kHz 1 95 Vrms 250 Vrms 20 kHz 3 95 Vrms Table 7 3 Input performance verification tests continued Step Test Function Connection to 5520A Range 5...

Page 155: ...e AUX Hi Low output terminals of the calibrator with a two cable stacked configuration to the U1401A input terminals 500 Ω 500 Ω 0 83 W 5 kΩ 5 kΩ 8 W 50 kΩ 50 kΩ 80 W 500 kΩ 500 kΩ 800 W 5 MΩ 5 MΩ 8 kW 50 MΩ 50 MΩ 508 kW 6 Turn the rotary switch to Press to select DC Connect the AUX Hi Low output terminals of the calibrator to the U1401A input terminals 0 05 A 0 045 A 18 5 µA 0 5 A 0 45 A 0 185 mA...

Page 156: ...ard bias position 2 V 1 9 V 1 45 mV 9 Turn the rotary switch to mV Press and hold for more than 1 second Connect K type thermocouple to the U1401A input terminals 40 C to 1372 C 0 C 3 C 40 F to 2502 F 32 F 6 096 F Table 7 3 Input performance verification tests continued Step Test Function Connection to 5520A Range 5520A output Error from nominal 1 year ...

Page 157: ...er U1401A output Error from nominal 1 year 1 Turn the rotary switch to any one of the positions Connect the U1401A output terminals to the 34405A Multimeter 1 5000 V 1 5 V 0 75 mV 0 V 0 3 mV 1 5 V 0 75 mV 15 000 V 15 V 7 5 mV 0 V 3 mV 15 V 7 5 mV 2 Turn the rotary switch to any one of the positions Connect the U1401A output terminals to the 34405A Multimeter 25 000 mA 25 mA 0 125 µA 25 mA 0 125 µA...

Page 158: ...that the batteries will not run low during the adjustments Replace or recharge the batteries before making adjustments to avoid false reading Consider the thermal effects as you connect the test leads between the calibrator and this instrument It is recommended that you wait for one minute after connecting the test leads before you begin the calibration During ambient temperature adjustment ensure...

Page 159: ...on mode press and for more than one second The primary display will indicate CHEEP 4 Press to enter the input calibration mode Temperature calibration 1 In calibration mode turn the rotary switch to the mV position 2 Press for more than one second to enter temperature calibration 3 Plug a K type thermocouple into the input terminal Feed in the reference input signal that represents 0 oC and wait f...

Page 160: ...0 CAL 1 In the output calibration mode the primary and secondary display will show CAL 0 and rdy respectively Connect the output terminals to a multimeter refer to Table 7 1 on page 131 for the recommended test equipment CAL 0 1 Press OUTPUT The primary and secondary displays show CAL 0 and 00000 respectively 2 Wait until the instrument reading becomes stable then record the value CAL 1 1 Press MO...

Page 161: ...rdy respectively 2 Press OUTPUT The primary and secondary displays show the output voltage value and 00000 respectively which means the present output level is as shown on the primary display 3 Press or to adjust the output voltage until the multimeter reading is the same as the value shown on the primary display 4 Press MODE to enter the next calibration step At the end of the last calibration st...

Page 162: ...tep the primary and secondary displays show the output current value and rdy respectively 2 Press OUTPUT The primary and secondary displays show the output current value and 00000 respectively which means the present output level is as shown on the primary display 3 Press or to adjust the output current until the multimeter reading is the same as the value shown on the primary display 4 Press MODE...

Page 163: ...cifications 147 DC specifications 147 AC specifications 148 AC DC specifications 149 Temperature specifications 150 Frequency specifications 151 1 ms peak hold specifications 153 Resistance specifications 153 Diode check and audible continuity specifications 154 Output Specifications 155 Constant voltage and constant current outputs 155 Square wave output 156 This chapter details the specification...

Page 164: ...04 F Full accuracy up to 80 Relative Humidity RH for temperature up to 31 C decreasing linearly to 50 RH at 40 C Storage Compliance 20 C to 60 C 4 F to 140 F with batteries removed Safety Compliance IEC 61010 1 2001 EN61010 1 2001 2nd Edition Canada CAN CSA C22 2 No 61010 1 04 USA ANSI UL 61010 1 2004 Measurement Category CAT II 150V Pollution Degree 2 Environment EMC Compliance IEC61326 2 1 2005 ...

Page 165: ...9V approximate Charging Time Approximately three hours in an environment of 10 C to 30 C If the battery has been fully discharged a prolonged charging time is required to bring the battery back to full capacity Warranty Please refer to http www agilent com go warranty_terms Three years for the product Three months for the standard accessories unless otherwise specified Please note that for the pro...

Page 166: ... circuits that are directly connected to the low voltage installation For example measurements on household appliances portable tools and similar equipment Measurement CAT III Measurements performed in fixed building installation For example measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in fixed installation equipment f...

Page 167: ...e to be added to the accuracy DC specifications 1 Input impedance 10 MΩ nominal for the range of 5 V and above and 1 GΩ nominal for the 50 500 mV range 2 The accuracy could be improved to 0 05 5 Always use the relative function to offset the thermal effect short the test leads before measuring the signal Table 8 1 DC mV voltage specifications Function Range Resolution Accuracy Overload protection ...

Page 168: ...d After measuring a current greater than 50 mA AC specifications 1 Input impedance 1 1 MΩ in parallel with 100 pF nominal for the range of 5 V and above and 1 GΩ nominal for the 50 500 mV range Crest factor 3 Table 8 2 DC current specifications Function Range Resolution Accuracy Burden voltage shunt Overload protection DC current 50 mA 1 1 μA 0 03 5 0 06 V 1 Ω 250 V 630 mA Quick acting fuse 500 mA...

Page 169: ...Range Resolution Accuracy 45 Hz to 5 kHz Burden voltage shunt Overload protection AC current 1 True rms From 5 to 100 of range 50 mA 1 μA 0 6 20 0 06 V 1 Ω 250 V 630 mA Quick acting fuse 500 mA 10 μA 0 6 V 1 Ω Table 8 5 AC DC mV voltage specifications Function Range Resolution Accuracy Overload protection 45 Hz to 5 kHz 5 kHz to 20 kHz AC DC mV voltage 1 True rms From 5 to 100 of range 50 mV 1 μV ...

Page 170: ...t at the M position for meter operation only Table 8 6 AC DC current specifications Function Range Resolution Accuracy 45 Hz to 5 kHz Burden voltage shunt Overload protection AC DC current 1 True rms From 5 to 100 of range 50 mA 1 μA 0 7 25 0 06 V 1 Ω 250 V 630 mA Quick acting fuse 500 mA 10 μA 0 6 V 1 Ω Table 8 7 Temperature specifications Function Thermocouple type Range Resolution Accuracy Over...

Page 171: ...ut frequency Overload protection 100 Hz 0 001 Hz 0 02 3 1 Hz 250 Vrms 1 kHz 0 01 Hz 10 kHz 0 1 Hz 100 kHz 1 Hz 200 kHz 10 kHz Table 8 9 Frequency sensitivity and trigger level specifications for voltage measurement Input range Maximum input for specified accuracy 10 range or 250 V Minimum sensitivity rms sine wave Trigger level for DC coupling 1 Hz to 100 kHz 100 kHz 20 kHz 20 kHz to 200 kHz 50 mV...

Page 172: ... to Table 8 8 for details Frequency sensitivity for current measurement For maximum input refer to AC voltage measurement Table 8 10 Duty cycle specifications Mode Range Accuracy at full scale DC coupling 0 1 to 99 9 0 3 per kHz 0 3 AC coupling 5 to 95 Table 8 11 Pulse width specifications Range Accuracy at full scale 0 01 ms to 1999 9 ms 0 2 3 Table 8 12 Frequency sensitivity specifications for c...

Page 173: ...ied after applying the relative function which is used to offset the test lead resistance and the thermal effect 2 For the 50 MΩ range the R H is specified for 60 Table 8 13 Peak hold specifications Signal width Accuracy for DC mV voltage current Single event 1 ms 2 400 for all ranges Table 8 14 Resistance specifications Range Resolution Accuracy Minimum input current Overload protection 500 Ω 1 0...

Page 174: ...e continuity specifications The overload protection is 250 Vrms and the instrument will beep when the reading is below 50 mV approximate Table 8 15 Diode check specifications Range Resolution Accuracy Test current Open voltage Diode 0 1 mV 0 05 5 Approximately 0 45 mA 4 8 VDC ...

Page 175: ...m output voltage is based on 20 mA into a 600 Ω load 3 If the current loop has a 24 V power a minimum output voltage of 24 V is achievable with a 20 mA current in a 1200 Ω load This is only applicable for the simulation mode for mA output refer to Simulation Mode for mA Output on page 88 for more information Table 8 16 Constant voltage CV output specifications Function Range Resolution Accuracy Ma...

Page 176: ...ill be different from the definition 2 For signal frequencies greater than 1 kHz an addition of 0 1 per kHz is added to the accuracy Table 8 18 Square wave output specifications Output Range Resolution Accuracy Frequency Hz 0 5 1 2 5 10 15 20 25 30 40 50 60 75 80 100 120 150 200 240 300 400 480 600 800 1200 1600 2400 4800 0 01 0 005 1 Duty Cycle 1 0 39 to 99 60 0 390625 0 01 0 2 2 Pulse Width ms 1...

Page 177: ...6 4866 China tel 800 810 0189 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 0800 fax 080 769 0900 Latin America tel 305 269 7500 Taiwan tel 0800 047 866 fax 0800 286 331 Other Asia Pacific Countries tel 65 6375 8100 fax 65 6755 0042 Or visit Agilent World Wide Web at www agilent com find assist Product specifications and descriptions in th...

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