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Service Information

Keysight E3630A Operating and Service Manual

Maintenance

Introduction

This section provides performance test, troubleshooting information, and

adjustment and calibration procedures. The following operation verification tests

comprise a short procedure to verify that the power supply is performing properly,

without testing all specified parameters.
If a fault is detected in the power supply while making the performance check or

during normal operation, proceed to the troubleshooting procedures. After

troubleshooting, perform any necessary adjustments and calibrations. Before

returning the power supply to normal operation, repeat the performance check to

ensure that the fault has been properly corrected and that no other faults exist.

Test equipment required

The following

Table 5-1

lists the equipment required to perform the various

procedures described in this section.

Table 5-1

Test equipment required

Type

Required characteristics

Use

Recommended model

Oscilloscope

Sensitivity : 100

Bandwidth : 20 MHz/100 MHz

Display transient response and

ripple and noise waveforms.

Keysight 54600A

RMS voltmeter

True rms, 20 MHz bandwidth
Sensitivity : 1 mV
Accuracy : 5%

Measure rms ripple and noise
voltage.

Multimeter

Resolution : 100 nV
Accuracy : 0.0035%

Measure DC voltages.

Keysight 34401A

Electronic load

Voltage range : 240 VDC
Current range : 10 ADC
Open and short switches
Transient on/off

Measure load and line

regulation.

Keysight 6063A

Resistive loads (R

)

Ω

20 W, 2.4

Ω

20 W

Measure ripple and noise.

Содержание E3630A

Страница 1: ...Triple Output Power Supply Keysight Model E3630A Operating and Service Manual ...

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

Страница 3: ...ery During the warranty period either Keysight or Keysight Technologies will at its option either repair or replace products which prove to be defective Keysight does not warrant that operation the software firmware or hardware shall be uninterrupted or error free For warranty service with the exception of warranty options this product must be returned to the nearest sevice center designated by Ke...

Страница 4: ... warranty terms contained in this statement except to the extent lawfully permitted do not exclude restrict or modify and are in addition to the mandatory rights applicable to the sale of this product to you Exclusive Remedies TO THE EXTENT ALLOWED BY LOCAL LAW THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EXCLUSIVE REMEDIES KEYSIGHT SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL I...

Страница 5: ...ain safe operation of the instrument Alternating current AC Frame or chassis ground terminal Direct current DC Caution risk of danger refer to this manual for specific Warning or Caution information In position of a bi stable push control Protective earth ground terminal Out position of a bi stable push control Earth ground terminal Positive binding post Negative binding post ...

Страница 6: ... the available line voltage and that the correct fuse is installed WARNING GROUND THE INSTRUMENT This product is a Safety Class I instrument provided with a protective earth terminal To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the AC power supply mains through a three conductor power cable with the third ...

Страница 7: ... voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components WARNING DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present WARNING DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Be...

Страница 8: ...us or toxic substance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product This symbol is a South Korean Class A EMC Declaration This is a Class A instrument suitable for professional use and in electromagnetic environment outside of the home ICES NMB 001 indicates that this ISM device complies with the Canadian ICES 001 Cet appareil...

Страница 9: ...s a Monitoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service Center or visit http about keysight com en companyinfo environment takeback shtml for more information Sales and Technical Support To contact Keysight for sales and technical support refer to th...

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Страница 11: ...y Markings 8 Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC 9 Product category 9 Sales and Technical Support 9 List of Figures 15 List of Tables 17 1 General Information Introduction 20 Safety Considerations 20 Safety and EMC Requirements 20 Safety 20 EMC 20 Instrument And Manual Identification 21 Options 21 Accessory 21 Description 22 Line fuse 23 Specifications 24 2 Installa...

Страница 12: ...ns Introduction 32 Turn On Checkout Procedure 33 Operation 34 Connecting load 36 Parallel operation 37 Series operation 37 4 Load Considerations Pulse Loading 30 Reverse Current Loading 30 Output Capacitance 30 Reverse Voltage Protection 31 5 Service Information Maintenance 34 Introduction 34 Performance Tests 37 General Measurement Techniques 37 Connecting measuring devices 37 Selecting load resi...

Страница 13: ...ement 44 Peak to peak measurement 45 Common mode current CMI 46 Load transient response time 46 Stability Drift 48 Troubleshooting 49 Open fuse troubleshooting 49 Adjustment And Calibration 50 Current limit adjustment 50 Meter calibration 50 6 Component Locator Diagrams Main Board Top 54 Main Board Bottom 55 Display Controller Top 56 Display Controller Bottom 57 7 Segment Top 58 7 Segment Bottom 5...

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Страница 15: ...6V supply 36 Figure 4 1 Reverse current loading solution 31 Figure 5 1 Line voltage selector set for 115 VAC 36 Figure 5 2 Front panel terminal connections 38 Figure 5 3 Current sampling resistor connections 39 Figure 5 4 Output current test set up 42 Figure 5 5 Basic test setup 43 Figure 5 6 Ripple and noise rms measurement test setup 45 Figure 5 7 Load transient response time waveform 47 ...

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Страница 17: ...Keysight E3630A Operating and Service Manual 17 List of Tables Table 1 1 Specifications 24 Table 5 1 Test equipment required 34 ...

Страница 18: ...18 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 19: ...wer Supply Operating and Service Manual 19 1 General Information Introduction 20 Safety Considerations 20 Safety and EMC Requirements 20 Instrument And Manual Identification 21 Options 21 Accessory 21 Description 22 Specifications 24 ...

Страница 20: ...ed to an AC source that has a 3 wire ground receptacle Review the instrument rear panel and this manual for safety markings and instructions before operating the instrument Refer to the Safety Summary page at the beginning of this manual for a summary of general safety information Specific safety information is located at the appropriate places in this manual Safety and EMC Requirements This power...

Страница 21: ...f the serial number are a unique five digit number Korea or four digit number Malaysia assigned sequentially If a yellow Change Sheet is supplied with this manual its purpose is to explain any differences between your instrument and the instrument described in this manual The Change Sheet may also contain information for correcting errors in the manual Options Options 0EM 0E3 and 0E9 determine whi...

Страница 22: ...it The 6 V output current limit depends on the output terminal voltage and varies linearly between 2 75 amps at 6 volts and 1 amp at zero volts All controls digital meter and output terminals are located on the front panel One voltage control sets the 0 to 6 V and another sets the voltages of the 0 to 20 V and 0 to 20 V outputs simultaneously These dual tracking outputs are made more versatile by ...

Страница 23: ...lect one of the supply s three outputs for display The voltmeter and ammeter always monitor any one supply simultaneously In addition to the standard 115 VAC 10 47 to 63 Hz input two other line voltage options are available for nominal inputs of 100 and 230 VAC The supply is furnished with a detachable 3 wire grounding type line cord The AC line fuse is in an extractor type fuseholder on the rear ...

Страница 24: ...full load to no load change in output current Line regulation All outputs Less than 0 01 plus 2 mV for any line voltage change within rating Tracking accuracy The 20 V and 20 V outputs track within 1 with the TRACKING ratio control in the Fixed position In variable tracking ratio mode the negative tracking output can be adjusted from less than 0 5 V to within 5 of the setting of the positive outpu...

Страница 25: ...during 8 hours at constant line load and ambient after an initial warm up time of 30 minutes Output voltage overshoot All outputs During turn on or turn off of AC power output plus overshoot will not exceed 1 V if the output control is set for less than 1 V If the control is set for 1 V or higher there is no overshoot General specifications AC input OEM 115 VAC 10 47 63 Hz 115 VA 84 W OE9 100 VAC ...

Страница 26: ...1 General Information 26 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 27: ...Keysight E3630A Triple Output Power Supply Operating and Service Manual 27 2 Installation Initial Inspection 28 Installation Data 29 Input Power Requirements 29 ...

Страница 28: ... a claim should be filed with the carrier The Keysight Technologies Sales and Service office should be notified as soon as possible Mechanical check This check should confirm that there are no broken knobs or connectors that the cabinet and panel surfaces are free of dents and scratches and that the meter is not scratched or cracked Electrical check Perform the Turn On Checkout Procedure in the fo...

Страница 29: ...ly Rack mounting This supply may be rack mounted in a standard 19 inch rack panel either by itself or alongside a similar unit Please see the Accessory on page 21 for available rack mounting accessory The rack mounting kit includes complete installation instructions Input Power Requirements Depending on the line voltage option ordered the supply is ready to be operated from one of the power source...

Страница 30: ...ce Manual The power supply is equipped at the factory with a power cord plug appropriate for the user s location Notify the nearest Keysight Sales and Service Office if the appropriate power cord is not included with the supply Figure 2 1 Outline diagram ...

Страница 31: ...Keysight E3630A Triple Output Power Supply Operating and Service Manual 31 3 Operating Instructions Introduction 32 Turn On Checkout Procedure 33 ...

Страница 32: ...and indicators illustrated in Figure 3 1 and serve as a brief check that the supply is operational Follow this checkout procedure or the more detailed performance test of service information section when the instrument is received and before it is connected to any load equipment Figure 3 1 Front panel controls and indicators 5 6 7 1 2 3 4 8 9 10 11 12 ...

Страница 33: ...and check that the voltmeter responds to the control setting and the ammeter indicates zero 5 Set the 20 V VOLTAGE control to 20 volts and short the 20 V output terminal to the COM terminal with an insulated test lead The ammeter should indicate a short circuit output current of 0 55 A 5 Remove the short from the output terminals 6 Repeat steps 4 and 5 for 20 V output 7 Adjust the 20 V output to 2...

Страница 34: ...add the voltmeter readings of the 20 V and 20 V output and use either the 20 V or the 20 V meter to measure the current Tracking ratio control With the Tracking Ratio control in the Fixed position the voltage of the 20 V supply tracks that of the 20 V supply within 1 for convenience in varying the symmetrical voltages needed by operational amplifiers and other circuits using balanced positive and ...

Страница 35: ...provide voltages and currents greater than its rated maximum outputs if the line voltage is at or above its nominal value Operation can be extended up to 5 over the rated output without damage to the supply but performance cannot be guaranteed to meet specifications in this region If the line voltage is maintained in the upper end of the input voltage range however the supply probably will operate...

Страница 36: ...uately heavy gauge to maintain satisfactory regulation at the load Each pair of connecting wires should be as short as possible and twisted or shielded to reduce noise pick up If a shield is used connect one end to the supply ground terminal and leave the other end unconnected If load considerations require locating output power distribution terminals at a distance from the power supply then the p...

Страница 37: ...nstant voltage source will deliver only that fraction of its rated output current necessary to fulfill the total current demand Series operation Series operation of two or more power supplies can be accomplished up to the output isolation rating of any one supply to obtain a higher voltage than that available from a single supply Series connected supplies can be operated with one load across both ...

Страница 38: ...3 Operating Instructions 38 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 39: ...g and Service Manual 39 4 Load Considerations This section provides information on operating your supply with various types of loads connected to its output Pulse Loading 40 Reverse Current Loading 40 Output Capacitance 40 Reverse Voltage Protection 41 ...

Страница 40: ...le An external source cannot be allowed to pump current into the supply without risking loss of regulation and possible damage to the output capacitor of the supply To avoid these effects it is necessary to preload the supply with a dummy load resistor so that the supply delivers current through the entire operating cycle of the load devices Output Capacitance An internal capacitor across the outp...

Страница 41: ...lytic capacitors and the series regulator transistors from the effects of a reverse voltage applied across the output terminals Since series regulator transistors cannot withstand reverse voltage either diodes are also connected across them When operating supplies in parallel these diodes protect an unenergized supply that is in parallel with an energized supply Figure 4 1 Reverse current loading ...

Страница 42: ...4 Load Considerations 42 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 43: ...t E3630A Triple Output Power Supply Operating and Service Manual 43 5 Service Information Maintenance 44 Performance Tests 47 General Measurement Techniques 47 Troubleshooting 59 Adjustment And Calibration 60 ...

Страница 44: ...e performance check to ensure that the fault has been properly corrected and that no other faults exist Test equipment required The following Table 5 1 lists the equipment required to perform the various procedures described in this section Table 5 1 Test equipment required Type Required characteristics Use Recommended model Oscilloscope Sensitivity 100 μV Bandwidth 20 MHz 100 MHz Displaytransient...

Страница 45: ... steps are necessary 1 After making certain that the line cord is disconnected from a source of power remove the top cover from the supply and set the two sections of the line voltage selector switch for the desired line voltage see Figure 5 1 2 Check the rating of the installed fuse and replace it with the correct value if necessary For Option OE3 use a slow blow 1 0 amp fuse For standard and Opt...

Страница 46: ...5 Service Information 46 Keysight E3630A Operating and Service Manual Figure 5 1 Line voltage selector set for 115 VAC ...

Страница 47: ...ly be several orders of the magnitude greater than the supply impedance and thus invalidate the measurement To avoid mutual coupling effects each measuring device must be connected directly to the output terminals by separate pairs of leads When performance measurements are made at the front terminals Figure 5 2 the load should be plugged into the front of the terminals at B while the monitoring d...

Страница 48: ...The wattage rating of this resistor would have to be at least 20 watts Electronic load Some of the performance test procedures use an electronic load to test the supply quickly and accurately An electronic load is considerably easier to use than a load resistor It eliminates the need for connecting resistors or rheostats in parallel to handle the power it is much more stable than a carbon pile loa...

Страница 49: ...l load resistance the value of the sampling resistor may be ignored The meter shunt recommended in Table 5 1 for example has a resistance of only 100 mΩ and can be neglected when calculating the load resistance of the supply Figure 5 3 shows a four terminal meter shunt The load current through a shunt must be fed from the extremes of the wire leading to the resistor while the sampling connections ...

Страница 50: ...KING RATIO control to the FIXED position and check the 20 V and 20 V ranges of the front panel voltmeter similarly by connecting the DVM to each of these outputs in turn setting the 20 V VOLTAGE control for a 20 volts DVM indication and verifying that the panel meter is accurate within 0 5 2 counts 19 7 V to 20 3 V Tracking 4 Connect the DVM to the 20 V output set the 20 V VOLTAGE control for a DV...

Страница 51: ...20 V and 20 V supplies similarly by connecting the test setup of Figure 5 4 to each output in turn For each 20 V supply make the total resistance of RL and the current sampling resistor 40Ω set the 20 V VOLTAGE control for a current indication on the DVM of 0 5 A check that the panel meter indication is within 0 5 2 counts of 0 5 A 0 48 A to 0 52 A 11 Disconnect all loads from the supply 12 Connec...

Страница 52: ... 15 0 85 A to 1 15 A Disconnect the test setup from the supply Figure 5 4 Output current test set up Load regulation load effect Definition The immediate change EOUT in the static value of DC output voltage resulting from a change in load resistance from open circuit to the value that yields maximum rated output current or vice versa To check the load regulation 1 Connect the test equipment across...

Страница 53: ...ugh 4 for each of the remaining supply outputs Figure 5 5 Basic test setup Line regulation source effect Definition The immediate change EOUT in the static value of DC output voltage resulting from a change in AC input voltage from a minimum to a maximum value 10 of nominal voltage To check the line regulation 1 Connect a variable autotransformer between the input power source and the power supply...

Страница 54: ...pple and noise Definition Ripple and noise are measured in the rms or peak to peak value over a 20 Hz to 20 MHz bandwidth Fluctuations below the lower frequency limit are treated as drift RMS measurement The rms measurement is not an ideal representation of the noise since fairly high output noise spikes of short duration could be present in the ripple and not appreciably increase the rms value To...

Страница 55: ... circuitry To measure the ripple and noise of the peak to peak value on each output supply output 1 Connect the test equipment across the output of the 20 V supply as shown in Figure 5 6 but replace the true rms voltmeter with the oscilloscope 2 Turn on the supply and push 20 V METER switch 3 Turn up output voltage to the full rated value 4 Set the oscilloscope to AC mode and bandwidth to 20 MHz 5...

Страница 56: ...ime Definition This is the time for the output voltage to return to within a specified band around its voltage following a change from full load to half load or half load to full load To measure the load transient response time 1 Connect the test equipment across the output of the 20 V supply as shown in Figure 5 5 but replace the DVM with the oscilloscope Operate the electronic load in constant c...

Страница 57: ...A Operating and Service Manual 57 7 Check that the pulse width t2 t1 of the transients at 15 mV from the base line is no more than 50 μsec as shown 8 Repeat for the remaining supply outputs Figure 5 7 Load transient response time waveform ...

Страница 58: ...ct the test equipment across the output of the 20 V supply as shown in Figure 5 5 2 Operate the electronic load in constant current mode and set its current to the full rated value of power supply 3 Turn on the supply 4 Turn up output voltage to the full rated value as read on the digital voltmeter 5 After a 30 minute warm up note the voltage on DVM 6 The output voltage reading should deviate less...

Страница 59: ...hough transients or fatigue can cause a fuse to blow it is a good idea to inspect the unit for obvious shorts such as damaged wiring charred components or extraneous metal parts or wire clippings in contact with circuit board conductors before replacing the fuse The rating of the correct replacement fuse depends on the line voltage option of the instrument for Option OE3 use a slow blow 1 0 amp fu...

Страница 60: ... to reduce the current when a decreasing load resistance increases it to 2 75 A 5 Meter calibration Panel Voltmeters To calibrate voltmeter proceed as follows 1 Connect DVM across 20 V output terminal and COM terminal of the supply 2 Turn on the supply 3 Set the output voltage below 18 V ex 15 V and adjust R11 on the display board until front panel VOLTS display reads exactly DVM value Next set th...

Страница 61: ...R5 on the display board until front panel AMPS display reads exactly DVM value divided by RS 4 To calibrate the ammeter for 6 V output select 6 V meter switch and turn 6 V VOLTAGE control fully clockwise 5 Adjust R61 on the main board until front panel AMPS display reads exactly DVM value divided by RS ...

Страница 62: ...5 Service Information 62 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 63: ...Triple Output Power Supply Operating and Service Manual 63 6 Component Locator Diagrams Main Board Top 64 Main Board Bottom 65 Display Controller Top 66 Display Controller Bottom 67 7 Segment Top 68 7 Segment Bottom 69 ...

Страница 64: ...6 Component Locator Diagrams 64 Keysight E3630A Operating and Service Manual Main Board Top ...

Страница 65: ...Component Locator Diagrams 6 Keysight E3630A Operating and Service Manual 65 Main Board Bottom ...

Страница 66: ...6 Component Locator Diagrams 66 Keysight E3630A Operating and Service Manual Display Controller Top ...

Страница 67: ...Component Locator Diagrams 6 Keysight E3630A Operating and Service Manual 67 Display Controller Bottom ...

Страница 68: ...6 Component Locator Diagrams 68 Keysight E3630A Operating and Service Manual 7 Segment Top ...

Страница 69: ...Component Locator Diagrams 6 Keysight E3630A Operating and Service Manual 69 7 Segment Bottom ...

Страница 70: ...6 Component Locator Diagrams 70 Keysight E3630A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 71: ...tion is subject to change without notice Always refer to the Keysight website for the latest revision Keysight Technologies 2002 2019 Edition 13 January 2019 Printed in Malaysia 5959 5329 5959 5329 www keysight com ...

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