Summary of Contents for Agilent Technologies 34405A
Page 1
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Agilent Technologies Downloaded from www.Manualslib.com manuals search engine...
Page 2
Data) and 12.212 (Computer Software) and, for the Department of Defense, DFARS 252.227-7015 (Technical Data - Commercial Items) and DFARS 227.7202-3 (Rights in Commercial Computer Software or Com- puter Software Documentation). 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 3
300 VAC. See "IEC Measurement Category II Overvoltage Protection" on the following page for further infor- mation. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 4
To main- 1.2A or socket. The 34405A may be used to make 500Vpk tain protection, replace this fuse only with a measurements with the HI and LO inputs fuse of the specified type and rating.
Page 5
Agilent 34138A Test Lead Set. cal/electronic product in domestic household waste. The Agilent 34405A is provided with an Agi- WA R N I N G Product Category: With reference to the lent 34138A Test Lead Set, described below.
Page 6
DoC by its product model or description. http://regulations.corporate.agilent.com/DoC/search.htm If you are unable to search for the respective DoC, please contact your local Agilent N O T E representative. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Contents Getting Started Tutorial Introducing the Agilent 34405A Multimeter Checking the Shipping Contents Connecting Power to the Multimeter Adjusting the Handle The Front Panel at a Glance The Display at a Glance The Rear Panel at a Glance Remote Operation...
Page 8
Other Sources of Measurement Error Performance Tests and Calibration Calibration Overview Closed - Case Electronic Calibration Agilent Technologies Calibration Services Calibration Interval Time Required for Calibration Recommended Test Equipment VIII 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 9
Disassembly and Repair Operating Checklist Types of Service Available Repackaging for Shipment Cleaning To Replace the Power Line Fuse To Replace a Current Input Fuse Electrostatic Discharge (ESD) Precautions 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 10
Specifications DC Specifications AC Specifications Temperature and Capacitance Specifications Operating Specifications Supplemental Measurement Specifications General Characteristics To Calculate Total Measurement Error Accuracy Specifications Configuring for Highest Accuracy Measurements Index 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Getting Started Tutorial Introducing the Agilent 34405A Multimeter Checking the Shipping Contents Connecting Power to the Multimeter Adjusting the Handle The Front Panel at a Glance The Rear Panel at a Glance...
Getting Started Tutorial Introducing the Agilent 34405A Multimeter The multimeter’s key features are: • 5 ½- digit dual display measurements • Ten measurement functions: • AC voltage • DC voltage • Two- wire resistance • AC current • DC current •...
In the unlikely event that self- test repeatedly fails, contact your nearest Agilent Sales Office. A more extensive self-test is available from the Utility menu see “Using the Utility N O T E Menu” on page 36 for details. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Getting Started Tutorial Adjusting the Handle To adjust the handle, grasp the handle by the sides and pull outward. Then, rotate the handle to the desired position. Benchtop Positions Carrying Position 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Shift (selects blue shifted keys) and Measurement Function and Resolution Keys Local key Autorange and Manual Range Secondary Display Key Math Operations and Edit Input Terminals and Current Fuse 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Reading hold function enabled. Limit Limit math feature enabled Null Null math feature enabled. MnMx Min/Max feature enabled. Continuity test function selected. Diode test function selected. Shift Shift key has been pressed. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Getting Started Tutorial The Rear Panel at a Glance USB Interface Connector AC Power Connector Model and Serial Number Label AC Line Voltage Selector Chassis Ground Lug AC Line Fuse 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Just connect the instrument to your PC using the USB 2.0 cable included with the instrument. To easily configure and verify an interface connection between the 34405A and your PC, N O T E use the Automation–Ready CD, which is shipped with your 34405A. This CD includes the Agilent IO Libraries Suite and the Agilent Connection Expert application.
Page 19
• The SCPI version is returned in the form “YYYY.V”, where “YYYY” represents the year of the version, and “V” represents a version number for that year (for example, 1994.0). 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
For remote operation, refer to the MEASure Subsystem in the Agilent 34405A Online Programmer’s Reference online help. Measuring AC or DC Voltage AC Voltage: • Five Ranges: 100.000 mV, 1.00000 V, 10.0000 V, 100.000 V, 750.00 V •...
Fused Typical ACI Display: 1000VDC 750VAC Range AC or DC Current Source Typical DCI Display: 1.2A 500Vpk m A DC Range m A DC 1.25A/500V FH CAT II (300V) 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Gate Time: 0.1 second or 1 period of the input signal, whichever is longer. • Input Protection: 750V rms on all ranges (HI terminal) Fused Typical Display: 1000VDC Freq Frequency Freq 750VAC Source Range 1.2A 500Vpk 1.25A/500V FH CAT II (300V) 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Current Fused Reverse Bias or Open Diode Display: 1000VDC 750VAC Forward Bias Shift Freq Freq Typical Forward Biased Diode Display: 1.2A 500Vpk 1.25A/500V FH V DC CAT II (300V) 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Input Protection: 1000 V (HI terminal) Test Current Fused Typical Display: 1000VDC 5k Ohm Temp 750VAC Temp °C Thermistor 1.2A 500Vpk 1.25A/500V FH CAT II (300V) 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Down range at <10% of current range Up range at >120% of current range • For remote operation, refer to the MEASure Subsystem in the Agilent 34405A Online Programmer’s Reference online help. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Selects 4½- digit mode. Shift Temp Temp Selects 5½- digit mode. • For remote operation, refer to the MEASure Subsystem in the Agilent 34405A Online Programmer’s Reference online help. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Features and Functions Math Operations Using the Secondary Display Using the Utility Menu Editing Values in the Secondary Display Storing and Recalling Instrument States Reset/Power-On State Triggering the Multimeter This chapter contains detailed information on the multimeter and how to use the front panel.
• All math operations are automatically turned- off when changing measuring functions. • Range changing is allowed for all math operations. • For remote operation, refer to the CALCulate Subsystem in the Agilent 34405A Online Programmer’s Reference online help. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
You can view and select the R value in the secondary display as described in “Editing Values in the Secondary Display” on page 40. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Min- - minimum reading since Min/Max was enabled • Avg- - average of all readings since Min/Max was enabled • N- - number of readings taken since Min/Max was enabled 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
When enabled, the Hold operation turns on the Hold annunciator and begins evaluating readings using the rules described below: ≤ Primary Display = Reading IF Max() - Min() 0.1% x Reading 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Math Operation When Viewing/Editing Editable Math Annunciator Null Offset Ref Value Ref R Value dB Ref Ref Value MnMx Maximum Minimum Average Reading Count Limit HI Limit Hi Limit LO Limit Lo Limit 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
The secondary display is based on the selected primary measurement function and how many times you press: Disp 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 34
All math operations offer predefined displays that can be presented on the secondary display as described on the next page. • For remote operation, refer to the DISPlay:WINDow2 commands in the Agilent 34405A Online Programmer’s Reference online help. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Present Reading dB Ref (in dBm) Min/Max Reading Max value Min value Avg value N (count) value Limit Reading PASS HI Limit LO Limit Hold Held Reading Present Reading 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
1= Measurement processor revision. and the serial number) 2= IO processor revision. UtitY donE Display donE on primary display for 1 None second then return to normal operation 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
6 When you reach the end of the Utility Menu, the primary display shows utitY and the secondary display briefly shows donE, after which the multimeter returns to normal operation. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Features and Functions Reading Error Messages The following procedure shows you to read error messages from the front panel. For remote operation, refer to the SYSTem:ERRor? command in the Agilent 34405A Online Programmer’s Reference online help. Utility Store Store Shift...
When a new stable reading is updated on display for Math Hold operation • When a measurement exceeds the HI or LO Limit value • When a forward- biased is measured in the Diode function 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Utility menu. You can edit the values used for the Null, Limit, dB or dBM math function. For remote operation, refer to the CALCulate Subsystem in the Agilent 34405A Online Programmer’s Reference online help. Selecting the Value to Edit Disp...
For remote operation, refer to the MEMory Subsystem, the *SAV, and *RCL commands in the Agilent 34405A Online Programmer’s Reference online help. The store function in the utility menu must be enabled (On) before you can store states.
To escape the recall operation without recalling a state, select ESC in step 4 above and N O T E Store Store to escape. After escaping, the secondary display briefly shows - - - press Recall Recall 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Features and Functions Reset/Power-On State The table below summarizes the 34405A's settings as received from the factory, following power cycling, and following the *RST command received over the USB remote interface. Non- volatile, user customizable behavioral differences are shown in BOLD type.
Page 44
Serial Number Unique value per-instrument No Change Calibration Calibration state Secured User Setting Calibration value No Change Calibration String Cleared No Change *State managed by IO Processor firmware. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
TRIGger:SOURce IMMediate The CONFigure and MEASure? commands automatically set the trigger source to IMMediate. Refer to the Agilent 34405A Programmer’s Reference for complete description and syntax for these commands. Software (Bus) Triggering The bus trigger mode is available from the remote interface only.
Page 46
• The INITiate command only initiates the measurement and needs a trigger (BUS or IMMEdiate) to make the actual measurement. Refer to the Agilent 34405A Programmer’s Reference for complete description and syntax for these commands. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
True RMS AC Measurements Other Primary Measurement Functions Other Sources of Measurement Error The Agilent 34405A multimeter is capable of making very accurate measurements. In order to achieve the greatest accuracy, you must take the necessary steps to eliminate potential measurement errors. This chapter describes common errors found in measurements and gives suggestions to help you avoid these errors.
Use twisted–pair connections to the multimeter to reduce the noise pickup loop area, or dress the test leads as close together as possible. Loose or 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Page 50
Also connect the multimeter and device under test to the same electrical outlet whenever possible. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
25 sequential samples which comprise the AC reading data set. The final AC reading result is computed from the acquired data set as shown by the equation below: √ AC Reading = Average [Data (1:25)] 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
This multimeter accurately measures true RMS voltage or current, as long as the wave shape contains negligible energy above the instrument’s effective bandwidth. Note that the 34405A uses the same techniques to measure true RMS voltage and true RMS current. Waveform Shape...
Page 54
Traditionally, DMMs include a crest factor derating table that applies at all frequencies. The measurement algorithm used in the 34405A multimeter is not inherently sensitive to crest factor, so no such derating is necessary.
Page 55
3 V (that is, a Crest Factor of 3) and duration 111 ms. The prf can be calculated to be 1000 Hz, as follows: Thus, from the table above, this AC waveform can be measured with 0.18 percent additional error. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Ideal Meter = Source Voltage -100% x V = DUT Source Resistance Error (%) = = Multimeter Burden Voltage R = Multimeter Current Shunt 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
For the best accuracy, take a zero null measurement with open probes, to null out the test lead capacitance, before connecting the probes across the capacitor to be measured. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
–80 C to 150 Thermistors have highly non–linear temperature–resistance relationships; therefore their conversion algorithms are more complex. Agilent multimeters use the standard Hart–Steinhart Approximation to provide accurate conversions. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
, self–heating occurs in the multimeter's internal signal–conditioning components. These errors are included in the multimeter's specifications. Temperature changes inside the multimeter due to self–heating may cause additional error on other AC voltage ranges. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 60
Measuring a low–level signal with the same frequency as the local power line is a common situation that is prone to this error. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 61
T. Error may occur when the pulse signal is measured at low voltage range due to saturation of the multimeter’s analog- to- digital (ADC) rail voltage. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 62
Measurement Tutorial 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Performance Tests and Calibration Calibration Overview Recommended Test Equipment Test Considerations Performance Verification Tests Overview Performance Verification Tests Calibration Security Calibration Process Adjustments Calibration Errors This chapter contains performance test procedures and calibration procedures.
Agilent Technologies Calibration Services When your instrument is due for calibration, contact your local Agilent Service Center for a low- cost recalibration. The 34405A is supported on automated calibration systems, which allow Agilent to provide this service at competitive prices.
Performance Tests and Calibration Time Required for Calibration The 34405A can be automatically calibrated under computer control. With computer control you can perform the complete calibration procedure and performance verification tests in less than 30 minutes once the instrument is warmed- up (see “Test Considerations”...
<1/5 instrument 1 year spec AC Current Fluke 5520A <1/5 instrument 1 year spec Frequency Fluke 5520A <1/5 instrument 1 year spec Capacitance Fluke 5520A <1/5 instrument 1 year spec 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Cable shields should be earth ground referenced. This configuration is recommended for optimal noises and settling time performance during calibration. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
"+1" if a failure occurred. This command may take up to 30 seconds to complete. You may need to set an appropriate interface time- out value. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Perform only the performance verification tests indicated in the following tables with the letter Q. If the instrument fails the quick performance check, adjustment or repair is required 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
'guard band', using no more than 80% of the specifications, as the verification limits. Make sure you have read “Test Considerations” on page 67 before doing the performance N O T E verification tests. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
DC Current 10mA ±1.5µA Open 100mA ±5 µA Open ±70µA Open ±0.7mA Open Capacitance ±8pF Open 10nF ±0.05nF Open 100nF ±0.5nF Open 1µF ±5nF Open 10µF ±0.05µF Open 100µF ±0.5µF 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 72
[2] Specifications are for 2- wire ohms function using the Null math function enabled to eliminate lead resistance. Without Null, add 0.2 Ω additional error. Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
±0.3 V Caution: Set the calibrator output to 0V before disconnecting it from the multimeter input terminals. [1] Select 5½- digit measurement resolution Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 74
Caution: Connect calibrator to multimeter’s 12A and LO terminals before applying 10A 10 A ± 25.7mA [1] Select 5½- digit measurement resolution Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 75
[[2] Specifications are for 2- wire ohms function using the Null math function enabled to eliminate lead resistance. Without Null, add 0.2 Ω additional error. Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Page 76
Error from Nominal Voltage Frequency Function Range Quick Check 1 year 200mVrms 1kHz Frequency ±0.23Hz 200mVrms 10kHz ±2.3Hz [1] Select 5½- digit measurement resolution Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 77
± 2.25 V Caution: Set the calibrator output to 0V before disconnecting it from the multimeter input terminals. [1] Select 5½- digit measurement resolution Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 78
10 A 1 kHz 10 A ± 60 mA 5 kHz 10 A ± 0.06 A [1] Select 5½- digit measurement resolution Q = Quick performance verification test points 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Input Frequency Function Range 1 year 45Hz AC Voltage ±11mV 1kHz ±3mV 10kHz ±3mV 30kHz ±11mV 100kHz ±32mV 1kHz ±30mV 1kHz ±12mV 0.1V 1kHz ±10.2mV [1] Select 5½- digit measurement resolution 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
± 0.25mF [1] For the best accuracy, take a zero null measurement with open test leads, to null out the test lead capacitance, before connecting the test leads to the calibrator. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
The security code can only be changed from the remote interface after the instrument has been unsecured. Refer to the CAL:SEC:CODE command in the 34405A Programmer's Reference Help File for more details. The security code may contain up to 12 alphanumeric characters. The first character must be a letter.
In our example, the code now becomes: 01A40 From the front panel, any letters (A in this example) are represented by 0. Use this code to unsecure: 01040 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 84
Enter Disp 4 Press (Enter) when done. 5 If the correct security code was entered, the CAL annunciator illuminates and the primary display briefly shows PASS. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
6 Note the new security code and calibration count in the instrument's maintenance records. Make sure to quit the Adjustment Mode then turn off the instrument. N O T E 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Performance Tests and Calibration Using the Front Panel for Adjustments This section describes the process used to perform adjustments from the front panel. Refer to the 34405A Programmer's Reference online help for remote interface commands. Selecting the Adjustment Mode Unsecure the instrument see “Unsecuring the Instrument for...
Page 87
742 through 748 (whichever is applicable). If this occurs, you should not use the instrument until a complete re–adjustment has been performed. A list of the possible calibration errors is given on page 103. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
68) between the HI and LO front panel input terminals. Leave the current inputs open. To minimize thermal effects wait at least 1 minute after connecting the Shorting Plug before N O T E executing the zero adjustment. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Most measuring functions and ranges have gain adjustment procedures. Ω The 100 M range does not have gain calibration procedures. Adjustments for each function should be performed ONLY in the order shown. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 90
0.9 to 1.1 x Full Scale Capacitance 0.4 nF, 1 nF, 10 nF, 100 nF, 1 µF, 10 µF, 0.9 to 1.1 x Full Scale 100 µF, 1000 µF, 10000 µF 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Check the input value, range, function, and entered adjustment value to correct the problem and repeat the adjustment step. 8 Repeat steps 3 through 7 for each gain adjustment point shown in the table. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Cal Item 'Open' can be neglected. 4 Use (Auto) or (Range) to select the Cal Item. 5 Apply the input signal shown in the "Input" column of the table. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 93
Open 10 mA 10 mA 100 mA 100 mA 1000 mA 1000 mA Caution: Connect calibrator to multimeter’s 12A and LO terminals before applying 10A 10 A 10 A 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
8 Repeat steps 3 through 7 for each gain adjustment point shown in the table. 9 Verify the AC Voltage Gain adjustments using the “AC Voltage Verification Test” on page 77. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
5 Apply the input signal shown in the Input and Frequency columns of the table below. Always complete tests in the same order as shown in the appropriate table. N O T E 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 96
100 mA 1000 mA 1kHz 1000 mA Caution: Connect calibrator to multimeter’s 12A and LO terminals before applying the following 1A and 10A 1kHz 10 A 1kHz 10 A 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Check the input value, range, function, and entered adjustment value to correct the problem and repeat the adjustment step. 8 Repeat steps 3 through 7 for each gain adjustment point shown in the table. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
5 Apply the input signal shown in the Input Voltage and Frequency column of the table. Always complete tests in the same order as shown in the appropriate table. N O T E 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
2 The primary display will show the calibration value and the secondary display will show the reference value of Cal Item. 3 Configure each Cal Item shown in the adjustment table below. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Page 100
8 Repeat steps 3 through 7 for each gain adjustment point shown in the table. 9 Verify the Capacitance Gain adjustments using the “Optional Capacitance Performance Verification Test” on page 81. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
3 Record the new Calibration Count (see page 102). Shift 4 Press simultaneously to exit the Adjustment Mode. The instrument will be secured and returns to DC Voltage, autoranging measurements. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
1 In Adjustment Mode (CAL annunciator illuminated) MnMx press . The secondary display shows the calibration count. 2 Make note of the count. MnMx 3 Press again to exit the calibration count mode. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Cal checksum failed ACI corrections Cal DCV offset out of range Cal checksum failed FREQ corrections Cal DCI offset out of range Cal checksum failed CAP corrections Cal RES offset out of range 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 104
Performance Tests and Calibration 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Disassembly and Repair Operating Checklist Types of Service Available Repackaging for Shipment Cleaning To Replace the Power Line Fuse To Replace a Current Input Fuse Self-Test Errors Electrostatic Discharge (ESD) Precautions...
Long test leads can act as an antenna causing pick–up of AC signals. Is the mutimeter’s current input inoperative? q Verify the current input fuse. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
If you have such a service contract and your instrument fails during the covered period, Agilent Technologies will repair or replace it in accordance with the contract. Obtaining Repair Service (Worldwide) To obtain service for your instrument (in–warranty, under service...
Agilent suggests that you always insure shipments. Cleaning Clean the outside of the instrument with a soft, lint–free, slightly dampened cloth. Do not use detergent. Disassembly is not required or recommended for cleaning. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
3 Rotate line voltage selector and reinstall so 4 Replace fuse holder assembly in rear correct voltage appears in fuse holder panel. window. 100, 120, 220 (230) or 240 Vac 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
The fuse is a 15A, 600V fast- acting fuse, Agilent part number 2110- 1396. If you determine that the fuse is faulty, replace it with one of the same size and rating. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Frequency measurement path failed Constant Current 0.2V/1kohm error Constant Current 0.2V/10kohm or amplification of 11 error Constant Current 0.8V/100kohm or amplification of 11 error Constant Current 1V/1.1Mohm or amplification of 11 error 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Keep replacement parts in original static–free packaging. • Remove all plastic, foam, vinyl, paper, and other static–generating materials from the immediate work area. • Use only anti–static solder suckers. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
General Disassembly 1 Remove power and all cables from the instrument. 2 Remove the carrying handle by rotating the handle upright and pulling out from the sides of the instrument. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 114
3 Remove the instrument bumpers. Pull from a corner and stretch the bumpers off the instrument. 4 Remove the rear bezel. Loosen the two captive screws in the rear bezel and remove the rear bezel. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 115
6 Remove on/off switch push rod. Gently move the power switch push rod toward the front of the instrument to disengage it from the switch. Be careful not to twist or bend the push rod. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Page 116
Disassembly and Repair 7 Remove the two screws holding the front panel. 8 Disconnect the two ribbon cable connectors from the front panel. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 117
9 Disconnect the individual front panel wires shown below. 10 There is now enough play to allow the side of the front panel to be pried from the chassis and removed as an assembly. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
Page 118
(shown below) and slide the board to disengage from the tabs. Lift the keyboard and display assembly from the plastic housing. Slide 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 119
Disassembly and Repair a The rubber keypad can now be pulled from the plastic housing. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Front Window 34401-86020 Kit-Bumpers 34401-45021 Front Handle 2110-1394 1.25A, 500V Fuse (I Input) 2110-1396 15A, 600V Fast Acting Fuse (12A Input) 2110-1395 0.2A, 250V, Time-Lag, Low-Breaking, Line Power Fuse 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
To rack mount two instruments side- by- side, order lock- link kit 5061- 9694 and flange kit 5063- 9212. 34405A 34405A Agilent Agilent 1 /2 Digit Multimeter 1 /2 Digit Multimeter 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 122
Disassembly and Repair 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Agilent 34405A 5 ½ Digit Multimeter User’s and Service Guide Specifications DC Specifications AC Specifications Temperature and Capacitance Specifications Operating Specifications Supplemental Measurement Specifications General Characteristics This chapter describes the multimeter’s specifications and operating specifications. Agilent Technologies Downloaded from www.Manualslib.com...
Page 124
Specifications These specifications apply when using the 34405A multimeter in an environment that is free of electromagnetic interference and electrostatic charge. When using the multimeter in an environment where electromagnetic interference or significant electrostatic charge is present, measurement accuracy may be reduced. Particularly note: •...
[15] For input < 300V rms. [16] For 20Hz - 10kHz, the sensitivity is AC input current from 10% to 120% of range except where noted. [17] Minimum measured frequency is 1 Hz. 34405A User’s and Service Guide Downloaded from www.Manualslib.com...
[4] Time to automatically change one range and to take at least one reading using SCPI “CONF AUTO” and “READ?” commands. [5] Number of measurements per second that can be read through USB using SCPI “ READ?” command. [6] Reading rate depends on signal frequency >10Hz. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
0.1Ω to 10Ω for 10mA to 1.2A ranges • 0.01Ω for 12A range • Input Protection: • Front Panel 1.25A, 500V fuse for I terminal • Internal 15A, 600V fuse for 12A terminal 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 130
5½ digits 65 dB (55 dB) • 4½ digits 0 dB AC Voltage • Measurement Method: • AC coupled true-rms - measure the AC component with up to 400 VDC bias any range 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 131
Auto or manual range selection • Gate Time: • 0.1 second or 1 period of the input signal, whichever is longer. • Input Protection: • 750V rms on all ranges (HI terminal) 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 132
• Null, dBm, dB, Min/Max/Avg, Hold, Limit Test Triggering and Memory • Single trigger, 1 reading memory Remote Interface • USB 2.0 full speed, USBTMC-USB488 device class Programming Language • SCPI, IEEE-488.1, IEEE-488.2 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
CISPR 11:2003 / EN 55011:2007 Group 1 Class A • Canada: ICES-001:2004 • Australia/New Zealand: AS/NZS CISPR 11:2004 Shock and Vibration • Tested to IEC/EN 60086-2 Dimension (HxWxD) • Rack: 88.5mm x 212.6mm x 272.3mm 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 134
Table 30 General Characteristics • Bench: 103.8mm x 261.1mm x 303.2 mm Weight • 3.75 kg (8.27 lb.) approximate Warm Up Time • 30 minutes Warranty • 3 years 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• For AC voltage and AC current measurements, you may need to apply an additional low frequency error or crest factor error. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
You must add additional temperature coefficient errors to the accuracy specification if you are operating the multimeter outside the ± 5 °C temperature range (the specification is per °C). 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
• Select 5½ digits. • Null the test lead resistance for 2 wire ohms measurements, and to – remove any interconnection offset for DC voltage measurements. 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 138
Specifications 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
DC Accuracy, Errors In, DC Characteristics, Front Panel DC Current Adjustments, Gain Adjustment Procedure, Calculate Total Measurement Error, At a Glance, Gain Verification Test, Unsecuring, DC Current Measurements Errors In, 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 140
Recalling a Stored a State, Operating Characteristics, Math Annunciators, Recommended Test Equipment, Math Operations, Operating Checklist, Remote Operation, Operating Environment, Math Operations and the Secondary Repackaging for Shipment, Display, Measurement Category, 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 141
Storing a State, Storing and Recalling Instrument Valid Gain Adjustment Input Values, States, Verification Tests, Supplemental Measurement Verification Tests Overview, Characteristics, Warm Up Period, Calibration, Technology Licenses, Warm Up Time, 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...
Page 142
Index 34405A User’s and Service Guide Downloaded from www.Manualslib.com manuals search engine...