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Agilent Technologies L4532A Series, Service Manual

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5

Agilent L4532A/ 34A 20 MSa/ s Digitizer
Service Guide

Agilent Technologies

1

Specifications

General Specifications      

7

Arm and Trigger      

8

Sampling      

8

DC Accuracy      

9

Dynamic Characteristics      

10

Timing and synchronization      

11

Waveform memory      

11

Waveform measurements      

11

Utilities      

11

Hardware      

12

Software      

12

Minimum system requirements (I/ O Libraries and Drivers)      

13

Environmental      

13

Data storage/ transfer      

13

To Calculate Total Measurement Error      

14

Summary of Contents for L4532A Series

Page 1: ...underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In...

Page 2: ...Agilent T echnologies Agilent T echnologies L4532A 34A 20 MSa s Digitizer Service Guide...

Page 3: ...ction with the furnishing use or perfor mance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the mat...

Page 4: ...Fuses The Agilent L4532A 34A is provided with an internal line fuse This fuse is not user accessible Do Not Operate in an Explosive Atmosphere Do not operate the instrument in the pres ence of flamma...

Page 5: ...32A 34A is intended only for IEC Measurement Category I applications as defined below IECMeasurement Category I Overvoltage Protection The L4532A 34A has IECMeasurement Category I CATI overvoltage pro...

Page 6: ...onmental 13 Data storage transfer 13 T o Calculate T otal Measurement Error 14 T emperature Coefficients 14 2 Introduction L4532A 34A Digitizers Capabilities 16 General Capabilities 16 Sampling and Me...

Page 7: ...zer 26 Powering Up 30 Connecting the Line Cord 30 Applying Power 30 Power On Sequence 31 Power Down Sequence 31 Input Connections 32 Input Characteristics and Protection limits 32 Connecting the DUT 3...

Page 8: ...sts 49 Self T est 49 Procedure 50 DCVoltage Accuracy 51 Equipment Setup 51 Procedure 53 Timebase Verification 58 Description 58 Procedure 58 ACFlatness optional test 59 Description 59 Equipment Setup...

Page 9: ...sages 77 Calibration Errors and Messages 79 Replaceable Parts List 80 Disassembly 81 T ools Y ou ll Need 81 Electrostatic Discharge ESD Precautions 81 Removing the Cover 82 Interior Layout 84 Replacin...

Page 10: ...rm and T rigger 8 Sampling 8 DCAccuracy 9 Dynamic Characteristics 10 Timing and synchronization 11 Waveform memory 11 Waveform measurements 11 Utilities 11 Hardware 12 Software 12 Minimum system requi...

Page 11: ...t specifications see the product datasheet on the Web Firmware updates may also be available on the Web Start at the appropriate product page www agilent com find L4532A www agilent com find L4534A Th...

Page 12: ...Input Range 256 V Input impedance 1 M 40 pF Input coupling DCor AC ACcutoff frequency 3 dB 10 Hz Input ranges 256 V 128 V 64 V 32 V 16 V 8 V 4 V 2 V 1 V 500 mV 250 mV Overvoltage protection Y es Maxi...

Page 13: ...her rising or falling edge 3 Latency between Level window trigger detection and first trigger sample Source Arm T rigger Description IMMediate T rigger or ARM at INITtime EXT ernal1 BNCTTLinput edge s...

Page 14: ...perature within 24 hours 23 C 5 C Tautozero 3 C2 3 T emp coefficient outside 18 28 C Range of reading of range of range of reading C of range C 250 mV 0 10 0 30 0 11 0 01 0 015 500 mV 0 10 0 20 0 06 0...

Page 15: ...THD dBc SNR dB SINAD dB ENOB2 250 mV 71 79 67 66 7 10 8 500 mV 77 83 70 69 8 11 3 1 V 81 85 73 72 7 11 8 2 V 85 82 75 74 2 12 0 4 V 70 80 64 63 9 10 3 8 V 70 83 65 64 9 10 5 16 V 70 81 65 64 9 10 5 In...

Page 16: ...rnal timebase output clock out BNC 10 MHz TTL External timebase reference clock in BNC 10 MHz 5000 ppm 10 MHz 50 kHz 10 ns typical 1 Vpp sine wave minimum with 2 ps RMSjitter 100 k nominal Data memory...

Page 17: ...IEEE488 1 and IEEE488 2 standards Supported by Agilent IOLibraries Suite included 1UFull rack LXI 425 7 mm W x 44 5 mm Hx 367 9 mm D Weight 3 3 kg 3 63 kg Front Panel Power switch and display Back pan...

Page 18: ...LIbraries Suite Video Super VGA 800 X600 256 colors or more Support for DirectX9 graphics with 128 MB graphics memory recommended Super VGA graphics is supported Browser Microsoft Internet Explorer 5...

Page 19: ...nge specification for a nominal operating temperature of 23 C 5 C Understanding the of range Error The range error compensates for inaccuracies that result from the range you select The range error co...

Page 20: ...2A 34A Digitizers Capabilities 16 General Capabilities 16 Sampling and Measuring Capabilities 17 L4532A L4534A Front Panel At A Glance 18 On Stand by button 18 Display 18 L4532A L4534A Rear Panel At A...

Page 21: ...nchronization source clock input and output Calibration source output Sample Memor y Standard Memory 32 MSa channel not upgradeable after purchase Deep Memory Option 128 MSa channel Instr ument Contro...

Page 22: ...Individual records or ranges of records All samples in memory Thedigitizer cancalculatethefollowingmeasurementsfromthesampledata Voltage levels Minimum Voltage Maximum Voltage Peak to Peak Voltage Ba...

Page 23: ...Display Thebacklit front panelLC Ddisplayprovidestwolineswhichcandisplay16characterseach T hetop linedisplaystheinstrument state thebottomlinedisplaysLXI LANinformation firmwareupdate progressmessage...

Page 24: ...h models Channel Connections left side of panel 4 channel model Control Connections center of panel Communications Connections right side of panel 1 BNCconnectors for channel inputs 2 BNCconnector for...

Page 25: ...d and the digitizer is rebooting to complete the update Innormal operation therightmost threecharactersof thetoplinearereservedfor annunciators The last character will be for errors If there is an err...

Page 26: ...nyLAN information If LXI information is displayed thesearethepossiblemessages LXI Power The backlight of the display will indicate that the power is on LXI IDENT A request for LXI instrument identific...

Page 27: ...22 Agilent L4532A 34A Service Guide 2 Introduction...

Page 28: ...lso introduces the digitizer s built in LAN based Web Interface Inspecting Contents 24 Items Supplied 24 Inspecting the Unit 24 Installing the L4532A 34A 25 Safety Considerations 25 Environment 25 Rac...

Page 29: ...rdcopy manuals are not included with the instrument However all manuals online help and other documentation are provided in electronic form on the Agilent L4532A 34A Pr oduct Refer ence CD Before inst...

Page 30: ...e Refer to the Safety Summary page at the beginning of this guide for general safety information Safety warnings for specific procedures are located at appropriate places throughout this manual Enviro...

Page 31: ...s on the diagram below match the procedure steps Step 1 Step 6 Step 6 Step 2 Step 5 Step 2 Step 3 Step 4 CAUTION Do not block the air intake and exhaust at the front rear and left sideof the unit Use...

Page 32: ...er where your instrument will be located Rack Frame Clip Nut 2 Attach the two front ears and the two rear extender supports to the digitizer as shown below Use four M3 x 8mm screws for the front ears...

Page 33: ...he back of the instrument rack as shown below Use the four plain 10 32 screws to install the rear ears Clip Nuts Instrument Rack Rear Ear Plain 10 32 Screws 4 Slide the instrument into the rack making...

Page 34: ...s 10 32 screws provided Front Ear Instrument Rack Clip Nut Dress 10 32 Screws 6 Optional step Insert two plain 10 32 screws one through the slot of each rear ear and extender support Attach the screws...

Page 35: ...drive the digitizer s internal power supply however no power is provided to its measurement circuitry You may already have connected your LAN or USB interface cable if not you may do so at this time...

Page 36: ...the instrument will display its fixed MAC address a typical example is shown every LAN instrument has a MAC address uniquely identifying its LAN interface Idle State Message Upon completing the power...

Page 37: ...rotection relays protect the digitizer from these conditions but only if the digitizer is On Using the On Stand by switch to put the unit in Stand by mode resets all channels to the 256 V range and di...

Page 38: ...DUT is accessible to operators you should provide a safety shroud You should also warn operators of the danger with a high voltage warning label For the Agilent L4532A 34A there are three main conside...

Page 39: ...de Refer to that section to make and configure your desired connection To get started using the digitizer Install the Agilent IO Libraries Suite from the Automation Ready CD ROM that is shipped with y...

Page 40: ...stem functions such as reading and debugging errors resetting power on defaults executing a device clear saving configured instrument states running a self test and performing device calibration all f...

Page 41: ...browser Internet Explorer 6 0 or later is recommended The Java applet is signed Y ou may see a dialog from your browser requesting permission to run this applet and may have to enable the applet to r...

Page 42: ...self guiding The help button provides complete help in a separate pop up window for whichever other page you are viewing e g the top three pages listed above or one of their tabbed pages The Network C...

Page 43: ...you configure or operate the digitizer The three tabs are Configure Digitizer This tab appears first It allows you to configure the digitizer and set up to acquire data Acquire Data This tab allows yo...

Page 44: ...ou can view the actual commands sent to the instrument to put it in its current state click the Current Configuration tab or a list of commands issued click the Command History tab The Command Monitor...

Page 45: ...on changes These settings and the commands you user to set them from a host application are described in detail in the Agilent L4532A 34A User s Guide In this Section Y ou can configure these paramete...

Page 46: ...and vertical scales to selectively view data and can set measurement markers Some useful controls on this page are The Acquisition buttons Run Once Run Abort and Trigger provide you the ability to dir...

Page 47: ...you can View and clear recorded errors Reset the digitizer Save or recall an instrument state Perform an instrument self test Perform digitizer calibration or quick Auto Zero calibration The Utilities...

Page 48: ...ctional T est optional 59 Input Channel Noise Functional T est optional 62 Adjustments 64 Calibration String 64 Calibration Count 65 Calibration Security 65 Using the Web Interface for Adjustments 66...

Page 49: ...n intervals beyond 2 years for any application Adjustment is Recommended Specifications are only valid within the period stated from the last adjustment Whatever calibration interval you select Agilen...

Page 50: ...oduct page www agilent com find L4532A www agilent com find L4534A Recommended T est Equipment The test equipment recommended for the performance verification and adjustment procedures is listed below...

Page 51: ...first receive the digitizer or after performing adjustments Optional Verification Tests Tests not performed with every calibration Perform these tests to verify additional characteristics or function...

Page 52: ...ng Perform a self test as described on page 76 Perform only the performance verification tests indicated with the letter Q If the digitizer fails the quick performance check adjustment or repair is re...

Page 53: ...e ambient relative humidity is less than 95 Allow a 60 minute warm up period Keep the input cables as short as possible Connect the input cable shields to earth ground Except where noted in the proced...

Page 54: ...ase you may initiate a more complete self test as described below The complete self test is an automated procedure that systematically exercises the processor digital infrastructure memory and analog...

Page 55: ...on the control panel page lists error numbers and messages for each failed test The table on page 77 lists self test error numbers and messages e As in step 2 c view note and clear any errors 3 Runnin...

Page 56: ...easured by the digitizer The measurement results are then compared to the known values of the inputs to determine the measurement error of the digitizer Large data records are acquired and averaged in...

Page 57: ...rol Page and select the Configure Digitizer tab Set the following parameters and click the Apply Configuration button Channels Range 250 mV Coupling DC Filter LP_20_MHz Acquisition Sample Rate 1 MSa s...

Page 58: ...ote the Vave measurements for all the channels in the Installed Measurements window b Compare the measured values to the ones shown in the table below 3 Set the Calibrator to output each voltage in th...

Page 59: ...0 000985 V 235 mV LP_200_kHz Q 0 000985 V 0 V Q 0 00075 V 235 mV Q 0 000985 V 460 mV 500 mV LP_20_MHz 0 00146 V 0 V 0 0010 V 460 mV 0 00146 V 460 mV LP_2_MHz 0 00146 V 0 V 0 0010 V 460 mV 0 00146 V 46...

Page 60: ...4 V 1 9 V 0 0043 V 1 9 V LP_200_kHz Q 0 0043 V 0 V Q 0 0024 V 1 9 V Q 0 0043 V 3 8 V 4 V LP_20_MHz 0 0158 V 0 V 0 012 V 3 8V 0 0158 V 3 8 V LP_2_MHz 0 0158 V 0 V 0 012 V 3 8 V 0 0158 V 3 8 V LP_200_kH...

Page 61: ...V 0 0344 V 15 2 V LP_200_kHz Q 0 0344 V 0 V Q 0 0192 V 15 2 V Q 0 0344 V 30 4 V 32 V LP_20_MHz 0 0688 V 0 V 0 0384V 30 4 V 0 0688 V 30 4 V LP_2_MHz 0 0688 V 0 V 0 0384 V 30 4 V 0 0688 V 30 4 V LP_200...

Page 62: ...z 0 3776 V 0 V 0 256 V 121 6 V 0 3776 V 121 6 V LP_2_MHz 0 3776 V 0 V 0 256 V 121 6 V 0 3776 V 121 6 V LP_200_kHz Q 0 3776 V 0 V Q 0 256 V 121 6 V Q 0 3776 V 237 5 V 256 V LP_20_MHz 0 5447 V 0 V 0 307...

Page 63: ...ency counter to the timebase reference signal on the 10 MHz Out BNC connector and measuring the reference signal frequency Procedure 1 Connect the rear panel Timebase Output to the counter input 2 Mea...

Page 64: ...1 kHz The AC flatness test procedure consists of measuring both 1 kHz and 1 MHz input signals on selected ranges and comparing their relative values The test signals are generated by a calibration sta...

Page 65: ...Window Set the Coupling to AC Click the OK button c Click the Edit button and set the Starting Offset to 0 and Window Size to 100000 Click the OK button d Leave the Measurements window open Procedure...

Page 66: ...nel to be verified 11 Use the Configure Digitizer tab to change the Range as indicated in the table below Set the Calibrator to output each voltage in the table below 12 Repeat steps 2 to 11 until all...

Page 67: ...value of the record This measured value is compared to the expected value of the input channel noise functional test limit Equipment Setup 1 Read Test Considerations on page 48 2 Connect a 50 termina...

Page 68: ...nstalled Measurements window open Procedure 1 On the Acquire Data tab click the Run Once button a Note the Vrms measurements for all the channels in the Installed Measurements window b Compare the mea...

Page 69: ...was performed the date when the next calibration is due the digitizer s serial number or even the name and phone number of the person to contact for a new calibration The calibration message may cont...

Page 70: ...zer When you first receive your digitizer it is secured Before you can adjust the digitizer you must unsecure it by entering the correct security code The security code is set to ATL4532 or ATL4534 wh...

Page 71: ...ing this procedure 2 Turn off the digitizer 3 Install the USB Flash drive in the Service Port on the digitizer rear panel see page 19 4 Turn on the digitizer The digitizer will boot up with the Calibr...

Page 72: ...voltage_lo sets all channels repeat for ranges 1 2 4 8 16 32 64 128 256 on the 32 64 128 and 256 ranges the high and low input is 0 CAL STORe put the new calibration constants into memory CAL STATE O...

Page 73: ...oth the gain and offset adjustments for every range on every channel Gain and Offset Adjustment 1 Read Test Considerations on page 48 2 Connect the DMM to the Calibration Output Set the DMM as follows...

Page 74: ...button to begin the calibration 12 The adjustments begin on the lowest range It is recommend that you perform the adjustments from the lowest to the highest range in order For each range the Cal sour...

Page 75: ...vance to the Select Calibration Type window 8 Select the checkbox for Offset Only calibration and click the Next button 9 Select the channel s to be calibrated and click the Next button 10 Click the S...

Page 76: ...6 Self T est Error Numbers and Messages 77 Calibration Errors and Messages 79 Replaceable Parts List 80 Disassembly 81 T ools Y ou ll Need 81 Electrostatic Discharge ESD Precautions 81 Removing the Co...

Page 77: ...er the terms of your warranty After your warranty expires Agilent offers repair services at competitive prices Extended Service Contracts Many Agilent products are available with optional service cont...

Page 78: ...the unit identifying the owner and indicating the required service or repair Include the model number and full serial number Place the unit in its original container with appropriate packaging materi...

Page 79: ...r the digitizer does not respond to remote commands test the power supplies as described beginning on page 75 b If the display does not light but the fans are running and digitizer responds to remote...

Page 80: ...the Carrier board and retest the supply at the power supply connector If this supply is still not correct power supply assembly replacement is indicated Removing the power supply is described beginni...

Page 81: ...pair The test typically takes approximately 60 seconds to complete During the test the digitizer analog inputs are disconnected internally from the rear panel BNC connectors and are connected to the i...

Page 82: ...witching during the procedure If the self test is successful Self test Passed is reported on the Utilities tab If the self test is not successful Self test Failed is reported followed by the self test...

Page 83: ...on gain DACadjustment failed Analog Board for channel n 616 Channel n calibration offset DACadjustment failed Analog Board for channel n 618 Channel n overvoltage protection test failed Analog Board f...

Page 84: ...begin adjustments on a digitizer that is secured 703 Cal invalid secure code The first character of the security code must be a letter A Z Numbers and Underscores may be used following the letter Pun...

Page 85: ...es when assemblies are handled or serviced Product s Part Description Both L4532A and L4534A 0950 4859 Power Supply 3101 4118 Power Switch 3131 0686 Switch Pushbutton Cap E5810 00001 Display L4532 667...

Page 86: ...ges as low as 50 volts The following guidelines will help prevent ESD damage when servicing the digitizer or any electronic device Disassemble digitizers only in a static free work area Use a conducti...

Page 87: ...crew holding the cover through the rear panel to the chassis Step 2 3 Remove the six 10 Torx flat head screws three at each side of the digitizer holding the cover to the chassis Step 3 WARNING The L4...

Page 88: ...uide 83 4 Slide the cover back 1 2 inch 13mm to disengage it the cover s front lip from beneath the front panel and lift up to remove Slide cover back to disengage from front panel Front Panel Cover S...

Page 89: ...ies is identified below The L4534A is shown both models use the same layout but the L4532A contains only one analog input board Fans Power Switch 12VCable Analog Board Channels 1 2 Analog Board Channe...

Page 90: ...supply 3 Remove the 10 Torx round head screw holding the power supply shield to the chassis and remove the shield 4 Disconnect the AC cable 3 pin blue and brown wired connector from the power supply...

Page 91: ...he processor board to risers on the carrier board 3 Grasp the carrier board by the edges avoiding touching electrical components or traces on the board Carefully pull up disengaging the three connecto...

Page 92: ...ts or traces on the board Carefully pull up disengaging the connector on the backside of the board below thick black and white bar drawn on the photo from its mating connector on the digital board Sli...

Page 93: ...Step 4 Step 4 Step 4 Step 4 Step 2 Step 3 To reinstall the rear panel reverse these steps Replacing the Digital Board L4532A only The analog board and rear panel must be removed before you can remove...

Page 94: ...ier board socket then reinstall the seven screws and one riser then reconnect the 12V cable Replacing the Digital Board L4534A only The two analog boards and rear panel must be removed before you can...

Page 95: ...tor from the carrier board socket Slide the digital board inward so that the BNC connectors clear the chassis and lift the board out Step 3 Step 4 Step 6 Rear Panel Step 5 Step 5 Step 5 Step 5 Step 5...

Page 96: ...as removed when removing the digital board 4 Disconnect the three fan cables from the carrier board 5 Disconnect the power switch cable from the carrier board 6 Disconnect the display cable from the c...

Page 97: ...3 Step 4 Ground Cable Step 2 To reinstall the ground cable reverse these steps Removing the Front Panel The front panel must be removed before you can remove the power switch and or its pushbutton cap...

Page 98: ...nt panel before reattaching the panel Replacing the Power Switch and Switch Cable The cover and front panel must be removed before you can remove the power switch or its cable To remove them 1 Remove...

Page 99: ...cable switch attached past the power supply and lift out Then disconnect the switch cable from the switch Step 2 Step 6 Power Switch Power Supply View of power switch with front panel and cover remov...

Page 100: ...the exterior of the instrument and remove the cover see Removing the Cover on page 82 2 Remove the front panel see Removing the Front Panel on page 92 In step 6 of that procedure you disconnect the di...

Page 101: ...Service Guide 5 Service and Repair 4 Turn over the display bracket and remove the three 8 Torx round head screws holding the display assembly to the bracket Step 4 Step 4 Step 4 To reinstall the displ...

Page 102: ...bracket and slide toward the back of the unit to free the fan cables and display cable 4 Remove the 10 Torx round head screw at the center of the fan bracket near the display holding the fan bracket t...

Page 103: ...tep 5 Step 5 Step 5 Step 6 Fan 1 Fan 2 Fan 3 3 separate connectors fan power 98 Agilent L4532A 34A Service Guide 5 Service and Repair To reinstall a fan reverse these steps Ensur e the fan is or iente...

Page 104: ...echnologies 6 Backdating This chapter contains information necessary to adapt this manual to instruments not directly covered by the current content At this printing however the manual applies to all...

Page 105: ...100 Agilent L4532A 34A Service Guide 6 Backdating...

Page 106: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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