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Tektronix Keithley 2260B Series, Руководство пользователя


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GETTING STARTED 

9 

G

ETTING STARTED 

This chapter describes the power supply in a 
nutshell, including its main features and front / 
rear panel introduction. After going through the 
overview, please read the theory of operation to 
become familiar with the operating modes, 
protection modes and other safety considerations.  

 

 

2260B Series Overview ........................................... 11

 

Series lineup ...............................................................................................11

 

Main Features ............................................................................................12

 

Accessories .................................................................................................13

 

2260B-30/80 Accessories ..............................................................13

 

2260B-250/800 Accessories ..........................................................15

 

Package Contents ......................................................................................17

 

Appearance ............................................................ 18

 

2260B Front Panel ....................................................................................18

 

Rear Panel ..................................................................................................21

 

Theory of Operation ............................................... 25

 

Operating Area Description ...................................................................25

 

CC and CV Mode .....................................................................................28

 

Slew Rate ....................................................................................................30

 

Bleeder Control .........................................................................................30

 

Internal Resistance....................................................................................31

 

Alarms .........................................................................................................32

 

Содержание Keithley 2260B Series

Страница 1: ...2260B Series www keithley com Multi Range Programmable DC Power Supplies A Tektronix Company A Greater Measure of Confidence ser Manual U 077 1046 01 August 2015 ...

Страница 2: ...800 4 models use a universal power input that can be used with 100 and 200 VAC systems To connect or replace the power cord use the procedure below Warning The following procedure should only be attempted by competent persons Ensure the AC power cord is not connected to power Removal 1 Turn off the power switch 1 2 Unscrew the power cord strain relief 3 Remove the 2 screws holding the power cord c...

Страница 3: ... Thread the power cord through the strain relief and through the power cord cover 1 2 Connect the AC power cord wires to the AC input terminals White Blue Black India Neutral N Green Green yellow GND Black Brown Red India Line L L N Line Neutral Ground 3 Set the cover over the AC terminals 3 ...

Страница 4: ...4 Screw the power cord cover onto the rear panel using the supplied screws 5 Screw the strain relief onto the power cord cover 4 5 ...

Страница 5: ...Series 2260B Multi Range Programmable DC Power Supplies USER MANUAL ISO 9001 CERTIFIED MANUFACTURER ...

Страница 6: ...manual may be photocopied reproduced or translated to another language without prior written consent The information in this manual was correct at the time of printing However we continue to improve products and reserves the rights to change specification equipment and maintenance procedures at any time without notice ...

Страница 7: ...Operation 60 Parallel Series Operation 75 Test Sequence 90 CONFIGURATION 102 Configuration 103 ANALOG CONTROL 122 Analog Remote Control Overview 123 Remote Monitoring 139 COMMUNICATION INTERFACE 144 Interface Configuration 145 FIRMWARE UPGRADE PROCEDURE 158 Firmware Update 159 Check the Firmware Version 162 Kernel Update 164 Check the Kernel Version 167 MAINTENANCE 169 ...

Страница 8: ...2260B Series User Manual 4 FAQ 171 APPENDIX 173 2260B Default Settings 173 Error Messages Messages 176 LED Display Format 176 2260B Specifications 177 2260B Dimensions 194 INDEX 201 ...

Страница 9: ...t in the best possible condition Safety Symbols These safety symbols may appear in this manual or on the instrument WARNING Warning Identifies conditions or practices that could result in injury or loss of life CAUTION Caution Identifies conditions or practices that could result in damage to the instrument or to other properties DANGER High Voltage Attention Refer to the Manual Protective Conducto...

Страница 10: ... not disassemble the instrument unless you are qualified Measurement categories EN 61010 1 2010 and EN 61010 2 030 specify the measurement categories and their requirements as follows The 2260B falls under category II Measurement category IV is for measurement performed at the source of low voltage installation Measurement category III is for measurement performed in the building installation Meas...

Страница 11: ...esistivity Pollution degree 1 No pollution or only dry non conductive pollution occurs The pollution has no influence Pollution degree 2 Normally only non conductive pollution occurs Occasionally however a temporary conductivity caused by condensation must be expected Pollution degree 3 Conductive pollution occurs or dry non conductive pollution occurs which becomes conductive due to condensation ...

Страница 12: ... connected to the terminal which is marked with the letter N or coloured Blue or Black The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red If in doubt consult the instructions provided with the equipment or contact the supplier This cable appliance should be protected by a suitably rated and approved HBC mains fuse refer to the ...

Страница 13: ...become familiar with the operating modes protection modes and other safety considerations 2260B Series Overview 11 Series lineup 11 Main Features 12 Accessories 13 2260B 30 80 Accessories 13 2260B 250 800 Accessories 15 Package Contents 17 Appearance 18 2260B Front Panel 18 Rear Panel 21 Theory of Operation 25 Operating Area Description 25 CC and CV Mode 28 Slew Rate 30 Bleeder Control 30 Internal...

Страница 14: ...2260B Series User Manual 10 Considerations 33 Grounding 36 ...

Страница 15: ...ely Model name Type Voltage Rating Current Rating Power 2260B 30 36 360W models 0 30V 0 36A 360W 2260B 80 13 360W models 0 80V 0 13 5A 360W 2260B 250 4 360W models 0 250V 0 4 5A 360W 2260B 800 1 360W models 0 800V 0 1 44A 360W 2260B 30 72 720W models 0 30V 0 72A 720W 2260B 80 27 720W models 0 80V 0 27A 720W 2260B 250 9 720W models 0 250V 0 9A 720W 2260B 800 2 720W models 0 800V 0 2 88A 720W 2260B ...

Страница 16: ...r efficient switching type power supply Low impact on load devices Fast transient recovery time of 1ms Fast output response time Features OVP OCP and OTP protection Adjustable voltage and current slew rates User adjustable bleeder control to quickly dissipate the power after shutdown to safe levels Extensive remote monitoring and control options Support for series and parallel connections 30 80 vo...

Страница 17: ...nal screws and washers x2 M8 terminal bolts nuts and washers x2 Air filter x1 Analog control protection dummy x1 Analog control lock lever x1 Output terminal cover top bottom 060316400 Basic Accessories Kit 1080W M4 terminal screws and washers x2 M8 terminal bolts nuts and washers x2 Air filter x1 Analog control protection dummy x1 Analog control lock lever x1 Output terminal cover top bottom Stra...

Страница 18: ...nd washers x2 Air filter x1 Analog control protection dummy x1 Analog control lock lever x1 Output terminal cover top bottom Strain relief 2260 005 Cable for 2 units in Series connection 2260 006 Cable for 2 units in Parallel connection 2260 007 Cable for 3 units in Parallel connection 2260 008 Test Lead Set with Lugs 2260B EXTERM Extended terminal 2260B RMK JIS Rack mount adapter JIS 2260B RMK EI...

Страница 19: ...lock lever x1 Output terminal cover top bottom High voltage output terminal 060316500 Basic Accessories Kit 1080W Air filter x1 Analog control protection dummy x1 Analog control lock lever x1 Output terminal cover top bottom High voltage output terminal Strain relief 063453401 CD R 2260B Manuals Drivers 071305502 Quick Start Guide PWRKI A _ Power cord 071305700 China RoHS Declaration 001163200 Cal...

Страница 20: ... 2260 007 Parallel operation cable for 3 units 2260 009 Test Leads for High Voltage 2260 010 Basic Accessories Kit Air filter x1 Analog control protection dummy x1 Analog control lock lever x1 Output terminal cover top bottom High voltage output terminal Strain relief 2260B EXTERM HV Extended terminal For 250V 800V HV models 2260B RMK JIS Rack mount adapter JIS 2260B RMK EIA Rack mount adapter EIA...

Страница 21: ...contents before using the 2260B Opening the box Contents single unit Main unit Test leads x1 USB cable Basic Accessories Kit CD R Manual Quick Start Guide Power cord x1 China RoHS Declaration Calibration of Traceable Certificate Packing Check List ...

Страница 22: ... 2260B Front Panel 2260B 30 72 80 27 250 9 800 2 720W Current knob Output key Power switch Voltage knob USB A port Display Cover panel Function keys 2260B 30 108 80 40 250 13 800 4 1080W 2260B 30 36 80 13 250 4 800 1 360W 2260B 30 108 1080W ...

Страница 23: ...stomized Test sequence for testing Locks or unlocks the panel keys to prevent accidentally changing panel settings Toggles the display from viewing V A V W or A W Press the Voltage knob for V W press the Current knob for A W Display Indicators VSR Voltage Slew Rate C V Constant Voltage Mode RMT Remote Control Mode ALM Alarm on DLY Delay Output C C Constant Current Mode ISR Current Slew Rate 20 40 ...

Страница 24: ...rent Knob Sets the current Output Press to turn on the output The Output key will light up when the output is active USB The USB A port is used to update the firmware The firmware can only be updated at a service center Power Switch Used to turn the power on off ...

Страница 25: ...al USB B port LAN AC Input Sense terminal Analog control connector LAN 100 240V 1000VA MAX AC 47 63Hz SER NO LABEL Sense terminal Chassis ground 2260B 30 108 80 40 1080W 2260B 30 36 80 13 360W 100 240V AC 1500VA MAX 47 63Hz LAN L N SER NO LABEL AC Input LAN 100 240V 47 63Hz 500VA MAX AC ...

Страница 26: ...C S V Output terminals V Fan Chassis ground USB B port LAN AC Input Sense terminal Analog control connector Sense terminal Output terminals V 2260B 250 13 800 4 1080W 2260B 250 4 800 1 360W LAN L N SER NO LABEL 47 63Hz 1500VA MAX AC 100 240V V V SN C S AC Input LAN 100 240V 47 63Hz 500VA MAX AC V SN C S V ...

Страница 27: ...ng socket Output Terminals 30 80 volt models Positive and negative output terminals Chassis ground Sense S and Sense S terminals Output Terminals 250 800 volt models The 250 and 800 volt models use a 9 pin connector and a plug for the output and sense terminal connections The plug is a MC420 38109Z plug by DECA SwitchLab Inc This plug is also available separately V SN C S V Positive V and negative...

Страница 28: ...oring from a PC Line Voltage Input 360W models 2260B 30 36 80 13 250 4 800 1 720W models 2260B 30 72 80 27 250 9 800 2 Voltage Input 100 240 VAC Line frequency 50Hz 60 Hz Automatically switchable AC Input voltage range 85VAC 265VAC Frequency 47Hz 63Hz Line Voltage Input L N 1080W models 2260B 30 108 80 40 250 13 800 4 Voltage Input 100 240 VAC Line frequency 50Hz 60 Hz Automatically switchable ...

Страница 29: ...e operating range limited only by the output power The operating area of each power supply is determined by the rated output power as well as the voltage and current rating For example the operating area and rated power output for the 2260B 30 36 is shown below Voltage Current 30 360W rated power 10 12 36 Operating Area When the power supply is configured so that the total output current x voltage...

Страница 30: ...epend purely on the load value Below is a comparison of the operating areas of each power supply 2260B 800V Series Operating Area 0 100 800 Current A Voltage V 200 300 400 700 0 1 2 3 4 900 5 1080W 702W 360W 500 600 0 45 0 9 1 35 800 250 2 88 4 32 1 44 2260B 250V Series Operating Area Current A Voltage V 0 3 6 9 12 15 1080W 720W 360W 1 44 2 88 4 32 250 80 9 13 5 4 5 250 200 150 100 50 0 ...

Страница 31: ...Area Current A Voltage V 26 6 4 5 9 0 13 5 80 1080W 720W 360W 30 45 40 20 5 10 15 25 0 35 0 20 40 60 80 90 27 40 5 2260B 30V Series Operating Area 0 5 30 Current A Voltage V 10 15 20 25 0 20 40 60 80 100 10 12 24 36 30 35 120 1080W 720W 360W 72 108 ...

Страница 32: ...ile the current will vary as the load varies At the point that the load resistance is too low to maintain a constant voltage the power supply will switch to CC mode and maintain the set current limit The conditions that determine whether the power supply operates in CC or CV mode depends on the set current ISET the set voltage VSET the load resistance RL and the critical resistance RC The critical...

Страница 33: ...wer supply will operate in CC mode when the load resistance is less than the critical resistance In CC mode the current output is equal to ISET and the voltage output is less than VSET RL RC RL RC VSET ISET CV CC V I RL RC Crossover point ...

Страница 34: ...High Speed Priority mode disables slew rate settings for CC or CV mode Slew Rate Priority mode allows for user adjustable slew rates for CC or CV mode The rising and falling slew rate can be set independently Slew rate Disabled Slew rate Enabled Bleeder Control Background The 2260B DC power supplies employ a bleed resistor in parallel with the output terminals 2260B Load Bleed resistor Bleed resis...

Страница 35: ...bleed resistor can discharge the connected battery when the unit is off Internal Resistance Background On the 2260B the internal resistance of the power supply can be user defined in software Internal Resistance Setting page 31 When the internal resistance is set it can be seen as a resistance in series with the positive output terminal This allows the power supply to simulate power sources that h...

Страница 36: ...voltage protection OVP prevents a high voltage from damaging the load OCP Overcurrent protection prevents high current from damaging the load OTP Overtemperature protection protects the instrument from overheating Power Switch Trip When the Power Switch Trip configuration setting is enabled the power supply will automatically shut down when a protection setting has been tripped OCP OVP OTP Alarm o...

Страница 37: ...f quickly can cause the inrush current limiting circuit to fail as well as reduce the working life of the input fuse and power switch Pulsed or Peaked loads When the load has current peaks or is pulsed it is possible for the maximum current to exceed the mean current value The 2260B power supply ammeter only indicates mean current values which means for pulsed current loads the actual current can ...

Страница 38: ...pply The 2260B power supply cannot absorb reverse current For loads that create reverse current connect a resistor in parallel to the power supply to bypass the reverse current This description only applies when the bleed resistance is off 2260B Load Resistor Reverse current Note The current output will decrease by the amount of current absorbed by the resistor Ensure the resistor used can withsta...

Страница 39: ...es between the power supply and load 2260B Load Diode CAUTION Ensure the reverse withstand voltage of the diode is able to withstand 2 times the rated output voltage of the power supply and the forward current capacity can withstand 3 to 10 times the rated output current of the power supply Ensure the diode is able to withstand the heat generated in the following scenarios When the diode is used t...

Страница 40: ...n connected to the protective ground or when floating Floating As the output terminals are floating the load and all load cables must have an insulation capacity that is greater than the isolation voltage of the power supply 2260B Load Ext V Ext R Analog connector Insulation capacity isolation voltage of power supply WARNING If the insulation capacity of the load and load cables is not greater tha...

Страница 41: ...d cables is greatly reduced The insulation capacity only needs to be greater than the maximum output voltage of the power supply with respect to ground 2260B Load Ext V Ext R Analog connector Insulation capacity voltage of power supply with respect to ground CAUTION If using external voltage control do not ground the external voltage terminal as this will create a short circuit ...

Страница 42: ...tings 56 View System Version and Build Date 57 Basic Operation 60 Setting OVP OCP Levels 60 Set to CV Mode 63 Set to CC Mode 66 Display Modes 69 Panel Lock 70 Remote Sense 71 Parallel Series Operation 75 Master Slave Parallel Overview 76 Master Slave Parallel Connection 79 Master Slave Parallel Operation 81 Master Slave Series Overview 84 Master Slave Series Connection 86 Master Slave Series Opera...

Страница 43: ...OPERATION 39 Remove Test Sequence 99 Test Sequence Error Messages 100 ...

Страница 44: ...e used with 100 and 200 VAC systems To connect or replace the power cord use the procedure below Warning The following procedure should only be attempted by competent persons Ensure the AC power cord is not connected to power Removal 1 Turn off the power switch 1 2 Unscrew the power cord protective sheath 3 Remove the 2 screws holding the power cord cover and remove 3 2 ...

Страница 45: ...nstallation 1 Connect the AC power cord wires to the AC input terminals White Blue Neutral N Green Green yellow GND Black Brown Line L L N Line Neutral Ground 2 Set the cover back over the AC terminals 2 3 Re install the power cord cover 4 Screw the power cord sheath back onto the cover 3 4 ...

Страница 46: ...B has a small filter that must first be inserted under the control panel before operation The small filter must be inserted for all models types 360W 720W 1080W Steps 1 Insert the small filter in the open area under the control panel 2 The unit is now ready to power up ...

Страница 47: ... POWER key If used for the first time the default settings will appear on the display otherwise the 2260B recovers the state right before the power was last turned OFF For default configuration settings see page 173 V A CAUTION The power supply takes around 8 seconds to fully turn on and shutdown Do not turn the power on and off quickly Please wait for the display to fully turn off ...

Страница 48: ...e The rating of the cables must equal or exceed the maximum current rated output of the instrument Recommended wire gauge Wire Gauge Nominal Cross Section Maximum Current 20 0 5 9 18 0 75 11 18 1 13 16 1 5 18 14 2 5 24 12 4 34 10 6 45 8 10 64 6 16 88 4 25 120 2 32 145 1 50 190 0 70 240 0 95 290 0 120 340 The maximum temperature rise can only be 60 degrees above the ambient temperature The ambient ...

Страница 49: ... screws or M8 sized bolts WARNING Dangerous voltages Ensure that the power to the instrument is disabled before handling the power supply output terminals Failing to do so may lead to electric shock Steps 1 Turn the power switch off 2 Remove the output terminal cover Page 47 3 If necessary screw the chassis ground terminal to either the positive or negative terminal See the grounding chapter for d...

Страница 50: ...ect the positive load cable to the positive output terminal and the negative cable to the negative output terminal 8 Reattach the output terminal cover Page 47 Connection with local sense wiring Using M4 screws Negative potential Positive potential Using M8 bolts Negative potential Positive potential Connection with voltage sense wiring Using M4 screws Sense Sense Using M8 bolts Sense Sense ...

Страница 51: ...m cover 2 Line up the bottom cover with the notches in the output terminals 3 Place the top terminal cover over the bottom cover Details 2 3 1 4 Use your thumb to slide the terminal covers shut as shown in the diagram below 5 When the top and bottom covers are flush re insert the screw that was removed in step 1 4 5 ...

Страница 52: ...2260B Series User Manual 48 Removal Reverse the procedure to remove the terminal covers ...

Страница 53: ...ngerous voltages Ensure that the power to the instrument is disabled before handling the power supply output terminals Failing to do so may lead to electric shock Please note the wire gauge used and the capacity of the plug socket It may be necessary to wire the load to a number of terminals to offset the capacity over a number of terminals Output Connector Overview When using the output connector...

Страница 54: ...ticlockwise to release the receptacle b Insert a wire that has had at least 7mm stripped from the insulation c Tighten the receptacle by screwing clockwise Steps 1 Turn the power switch off 2 Remove the output terminal cover Page 53 3 Choose a suitable wire gauge for the load cables Page 44 4 Strip 7mm from one end of each load cable 5 Connect the positive load cable to one of the V pins and the n...

Страница 55: ...erminals 6 If using local sense connect the S pin to a V pin and connect the S pin to a V pin V SN C S V 7 If not using local sense see the remote sense section to wire the sense terminals for remote sensing Page 71 8 If necessary connect the chassis ground terminal to either the V or V pin See the grounding chapter for details Page 36 V SN C S V 9 Reattach the output terminal cover Page 53 ...

Страница 56: ...2260B Series User Manual 52 Local Sense Wiring To positive potential To negative potential V V Remote Sense Wiring To positive potential To negative potential S V V S ...

Страница 57: ...Steps 1 Screw the bottom cover onto the rear panel using the two M4 screws 1 2 Slide the top cover over the bottom cover 2 3 Finally secure the top cover with the screw in the center of the top cover 3 Removal Reverse the procedure to remove the terminal covers ...

Страница 58: ...of all models 1x 360W 1x 720W and 1x 1080W Rack mount diagram 360W 720W 1080W How to Use the Instrument Background The 2260B power supplies use a novel method of configuring parameter values only using the Voltage or Current knobs The knobs are used to quickly edit parameter values at 0 01 0 1 or 1 unit steps at a time When the user manual says to set a value or parameter use the steps below Examp...

Страница 59: ...05 volts is shown Voltage Voltage V A V A 6 Repeatedly press the Voltage knob until the first digit is highlighted This will allow the voltage to be edited in 1 volt steps 7 Turn the Voltage knob until 10 05 is shown V A V A Note Notice the Set key becomes illuminated when setting the current or voltage If the Voltage or Current knobs are unresponsive press the Set key first ...

Страница 60: ...unction key will light up 9 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 10 Rotate the Voltage knob to change the F setting to F 88 Factory Set Value Voltage 11 Use the Current knob to set the F 88 setting to 1 Return to factory settings Currnet 12 Press the Voltage knob to confirm ConF will be displayed when successful Voltage 13 Press the Function ...

Страница 61: ...log control version and kernel build Steps 14 Press the Function key The Function key will light up 15 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 16 Rotate the Voltage knob to change the F setting to F 89 Show Version Voltage 17 Rotate the Current knob to view the version and build date for the various items Current ...

Страница 62: ...On Year D XX Kernel Build On Year E XX Kernel Build On Month F XX Kernel Build On Day 18 Press the Function key again to exit The function key light will turn off Example Main Program Version Vt1 50 2014 08 03 0 t1 Main Program Version 1 50 Main Program Version 2 20 Main Program Build On Year 3 14 Main Program Build On Year 4 08 Main Program Build On Month 5 03 Main Program Build On Day Example Ke...

Страница 63: ...OPERATION 59 Example Kernel Version 2013 03 22 C 20 Kernel Build On Year D 13 Kernel Build On Year E 03 Kernel Build On Month F 22 Kernel Build On Day ...

Страница 64: ...OCP Levels Background For most models the OVP level has a selectable range of approximately 10 to 110 of the rated output voltage Likewise the OCP level for most models has a selectable range of approximately 10 110 of the rated output current The OVP and OCP level is set to the maximum by default The OCP level can also be turned off Note that the actual setting range differs for each model When o...

Страница 65: ...5 0 144 1 584 2260B 720W 30 72 80 27 250 9 800 2 OVP Range V 3 33 8 88 20 275 20 880 OCP Range A 5 79 2 2 7 29 7 0 9 9 9 0 288 3 168 2260B 1080W 30 108 80 40 250 13 800 4 OVP Range V 3 33 8 88 20 275 20 880 OCP Range A 5 118 8 4 05 44 55 1 35 14 85 0 432 4 752 Steps 1 Press the OVP OCP key The OVP OCP key lights up 2 The OVP setting will be displayed on the top and the OCP setting or OFF will be d...

Страница 66: ...icator will turn off Power switch trip Set F 95 Power switch trip to 1 to disable the power switch trip or to 0 to enable the power switch trip and save Page 120 F 95 1 Disable or 0 Enable Clear OVP OCP protection The OVP or OCP protection can be cleared after it has been tripped by holding the OVP OCP button for 2 seconds Only applicable when the power switch trip setting is disabled F 95 1 hold ...

Страница 67: ...e for the instrument while Slew Rate Priority will use a user configured slew rate Background Before setting the power supply to CV mode ensure The output is off The load is connected Steps 1 Press the Function key The Function key will light up 2 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 3 Rotate the Voltage knob to change the F setting to F 03 V...

Страница 68: ...2260B 80 XX 0 1V s 500 0V s 2260B 250 XX 1V s 1600V s 2260B 800 XX 7 Press the Function key again to exit the configuration settings The function key light will turn off 8 Use the Current knob to set the current limit crossover point Push in the knob to highlight a digit Turn the knob to the desired digit to adjust Rotate the knob to the desired current Current 9 Use the Voltage knob to set the vo...

Страница 69: ...rst 10 Press the Output key The Output key becomes illuminated C V W V A CV and the Power Bar will become illuminated top left center 20 40 60 80 100 W Note Only the voltage level can be altered when the output is on The current level can only be changed by pressing the Set key For more information on the Normal Function Settings F 00 F 61 F 88 F 89 see page 108 ...

Страница 70: ...rate for the instrument while Slew Rate Priority will use a user configured slew rate Background Before setting the power supply to CC mode ensure The output is off The load is connected Steps 1 Press the Function key The Function key will light up 2 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 3 Rotate the Voltage knob to change the F setting to F 0...

Страница 71: ...A s 27 00A s 2260B 80 13 0 01A s 54 00A s 2260B 80 27 0 01A s 81 00A s 2260B 80 40 0 001A s 9 000A s 2260B 250 4 0 01A s 18 00A s 2260B 250 9 0 01A s 27 00A s 2260B 250 13 0 001A s 2 880A s 2260B 800 1 0 001A s 5 760A s 2260B 800 2 0 001A s 8 640A s 2260B 800 4 7 Press the Function key again to exit the configuration settings The function key light will turn off 8 Use the Voltage knob to set the v...

Страница 72: ...the current or voltage If the Voltage or Current knobs are unresponsive press the Set key first 10 Press the Output key The Output key becomes illuminated W V A C C W 20 40 60 80 100 CC and the Power Bar will become illuminated bottom left center Note Only the current level can be altered when the output is on The voltage level can only be changed by pressing the Set key For more information on th...

Страница 73: ...aying A W and V W simply press the corresponding Voltage or Current knob For example when in A W mode press the Voltage knob to display V W Conversely when in V W mode press the Current knob to display A W Voltage Current When V W is displayed the Voltage knob can still be used to change the voltage level When A W is displayed the Current knob can still be used to change the current level Exit Pre...

Страница 74: ...cept the Lock Local key and Output key if active will be disabled If the instrument is remotely controlled via the USB LAN interface the panel lock is automatically enabled Activate the panel lock Press the Lock Local key to active the panel lock The key will become illuminated Disable the panel lock Hold the Lock Local key for 3 seconds to disable the panel lock The Lock Local light turns off ...

Страница 75: ... with a voltage drop less than the compensation voltage WARNING Ensure the output is off before connecting any sense cables Use sense cables with a voltage rating exceeding the isolation voltage of the power supply Never connect sensing cables when the output is on Electric shock or damage to the power supply could result Note Be sure to remove the Sense joining plates so the units are not using l...

Страница 76: ...260B Units 1 Connect the Sense terminals to the positive potential of the load Connect the Sense terminals to the negative potential of the load Output Sense Sense 2260B 2 Output Output Sense Sense 2260B 1 Output Load Input Input Page 45 2 Operate the instrument as normal See the Parallel Operation chapter for details Page 76 ...

Страница 77: ...inal of the second 2260B unit c Connect the 2nd Sense terminal to the positive terminal of the second 2260B unit d Connect the 2nd Sense terminal to negative terminal of the load 2260B 2 a b c d Load Input Input Output Sense Sense 2260B 1 Output Output Sense Sense Output Page 45 2 Operate the instrument as normal See the Serial Operation chapter for details Page 84 ...

Страница 78: ... To help to minimize the oscillation due to the inductance and capacitance of the load cables use an electrolytic capacitor in parallel with the load terminals To minimize the effect of load line impedance use twisted wire pairing 2260B Load s s Twisted pair Capacitor ...

Страница 79: ...he mode Series Mode 2 units maximum 30V and 80V models only Parallel Mode 3 units maximum CAUTION 250V and 800V models do not support series operation To use the power supplies in series or parallel units must be used in a Master Slave configuration In the master slave configuration a master power supply controls any other connected slave power supplies Master Slave Parallel overview from page 76 ...

Страница 80: ...n be used in parallel and all units must be of the same model When the units are used in parallel a number of precautions and limitations apply Please read this overview before operating the power supplies in parallel Master Load Ext V Ext R Slave VMON IMON Slave Limitations Display Only the master unit will display the voltage and current ...

Страница 81: ...nt represents the total current of the all the parallelized units Remote Sense Please see the remote sense chapter for details page 71 External Voltage and Resistance Control Voltage Resistance controlled remote control can only be used with the master unit Slew Rate Only the master unit s current or voltage slew rate settings apply The settable current slew rate is double or triple that of a sing...

Страница 82: ... are always turned off when in parallel mode Output Voltage Output Current Model Single unit 2 units 3 units 2260B 30 36 30V 36A 30V 72A 30V 108A 2260B 80 13 80V 13 5A 80V 27A 80V 40 5A 2260B 250 4 250V 250V 250V 4 5A 9A 13 5A 2260B 800 1 800V 800V 800V 1 44A 2 88A 4 32A 2260B 30 72 30V 30V 30V 72A 144A 216A 2260B 80 27 80V 80V 80V 27A 54A 81A 2260B 250 9 250V 250V 250V 9A 18A 27A 2260B 800 2 800V...

Страница 83: ...elow Alternatively pre configured cables optional can be used The 2260B 006 is used for two units in parallel The 2260B 007 is used for 3 units in parallel Master with 2 slave units 12 13 14 15 17 20 21 24 20 12 1715 3 1715 3 12 24 20 11 1 2 1 OUTPUT ON STATUS 21 Master unit ALM STATUS 20 STATUS COM 17 FEEDBACK 15 CURRENT_SUM_1 13 SHUTDOWN 12 OUT ON OFF CONT 24 Slave Unit 1 12 SHUTDOWN 20 ALM STAT...

Страница 84: ... 15 FEEDBACK 3 CURRENT SUM OUT 17 STATUS COM 2 D COM 11 1 I MON CURRENT SHARE 11 1 16 16 A COM A COM 16 16 Parallel Output Connection Load Master unit Slave unit 2 Slave unit 1 Steps 1 Ensure the power is off on all power supplies 2 Choose a master and a slave unit s 3 Connect the analog connectors for the master and slave unit as shown above 4 Remove the Output Terminal covers and the protection ...

Страница 85: ...fore using the power supplies in parallel the master and slave units need to be configured Steps 1 Configure the OVP and OCP settings for the master unit Page 60 2 For each unit hold the Function key while turning the power on to enter the power on configuration settings 3 Configure F 93 Master Slave setting for each master slave unit Page 120 Unit F 93 Master with 1 slave in parallel 1 Master wit...

Страница 86: ...peration Only operate the power supplies in parallel if the units are configured correctly 1 Turn on the master and slave units The slave unit s will show a blank display Master unit Slave units 2 Operation of all units is controlled via the master unit Operation of the master unit is the same as for a single unit See the Basic Operation chapter Page 60 3 Press the Output key to begin Caution Only...

Страница 87: ...OPERATION 83 Note The panel controls are disabled on slave units including the output key On slave units only the Function key can be used to view the current settings ...

Страница 88: ...fore operating the power supplies in series Master Load Ext V Ext R Slave VMON IMON Limitations Display Only the master unit will display the current Master and slave units display the voltage The total voltage is the sum of the units OVP OCP The master unit can shut down the slave unit when OVP OCP is tripped on the master unit if the slave connector is wired for shut down on alarm OVP and OCP le...

Страница 89: ...stance controlled remote control can only be used with the master unit Slew Rate The voltage slew rate is actually double that of the setting slew rate I e A voltage slew rate setting of 60 00V s is actually 120V s when in series Internal Resistance The internal resistance is actually twice that of the setting value Only the master unit s internal resistance settings apply Bleeder Control The Mast...

Страница 90: ...ies Connection Master Slave Connector The Analog Control Connector is used for both serial and parallel connections The way the connector is configured determines the behavior of the master and slave units For the connector pin assignment see page 123 Analog Connector Connection To operate the power supplies in series connect the analog connectors on the master and slave unit as shown in the diagr...

Страница 91: ...COM Series Output Connection Master unit Load Slave unit Steps 1 Ensure the power is off on both power supplies 2 Choose a master and slave unit 3 Connect the analog connectors for the master and slave unit as shown above 4 Remove the output terminal cover and the protection dummy plug from the analog control connector Page 47 5 Connect the master and slave unit in series as shown above 6 Reattach...

Страница 92: ...e configured 1 Configure the OVP and OCP settings for the master unit Page 60 2 For each unit hold the Function key while turning the power on to enter the power on configuration settings 3 Configure F 93 Master Slave setting for each master slave unit Page 120 Unit F 93 Master local or series operation 0 Slave unit series 4 4 Cycle the power on the units reset the power Note Configuration setting...

Страница 93: ...t Slave unit V A V 2 Operation of all units is controlled via the master unit Operation of the master unit is the same as for a single unit Please see the basic operation chapter for details Page 60 3 Press the Output key to begin CAUTION Only operate the power supplies in series if using units of the same model number 250V and 800V models do not support series operation Only a maximum of 2 units ...

Страница 94: ...er of tests automatically The 2260B utility function can store ten test sequences in memory Test Sequence File Format from page 91 Test Sequence Settings from page 91 Setting the Test Sequence Settings from page 95 Load Test Sequence from page 96 Run Test Sequence from page 97 Run Test Sequence from page 97 Export Test Sequence from page 98 Remove Test Sequence from page 99 Test Sequence Error Cod...

Страница 95: ...to see page 96 Below is an example of a simple test file created in a spreadsheet Cycle Step Start Cycle Step End Cycle Repeat Step number Time sec Voltage V Current A Cycle Header Step Header Time sec Header Voltage V Header Current A Header A test file contains the following fields in the following order Line 1 Cycle Header This field contains the Cycle header text Required Do not remove or alte...

Страница 96: ...r alter from this location Current A Header This field contains the Current A header text Required Do not remove or alter from this location Line 3 Step Number The Step Number field numbers each step in the test function It has a range of 1 1000 All steps must be numbered in numerical order No step number can be skipped between the first and last step Time sec Designates the duration time of the c...

Страница 97: ...fields steps 3 5 are repeated twice In total the steps will run as follows Steps 3 5 are repeated twice Step 1 2 3 4 5 3 4 5 6 7 8 9 10 Cycle 2 3 5 Step Time sec Voltage V Current A 1 1 MIN MIN 2 1 0 05 0 05 3 1 0 1 0 1 4 1 0 15 0 15 5 1 0 2 0 2 6 1 0 25 0 25 7 1 0 3 0 3 8 1 0 35 0 35 9 1 0 4 0 4 10 1 0 45 0 45 ...

Страница 98: ...nce will run as soon as the utility function is started T 01 1 10 Test sequence Load Loads a test sequence from the USB drive to the designated save slot in memory A test sequence must first be loaded into internal memory before it can be run T 02 1 10 USB 2260B Test Export Exports a test sequence from the designated memory save slot to the USB drive T 03 1 10 2260B USB Test sequence Remove Delete...

Страница 99: ...will show T 01 on the top and the memory no for T 01 on the bottom Test Sequence Setting Memory number 3 Rotate the voltage knob to select below items Voltage Test sequence Run Test sequence Load Test sequence Export Test sequence Remove T 01 T 02 T 03 T 04 4 Rotate the current knob to choose a memory slot number Current Range 1 10 5 Press the Voltage knob to complete the setting Voltage ...

Страница 100: ...uence file is placed in the root directory Ensure the file name number corresponds to the memory number that you wish to save to For example A test sequence file named t001 csv can only be saved to memory number 01 t002 csv can only be saved to memory number 02 and so on Steps 1 Insert a USB flash drive into the front panel USB A slot Ensure the flash drive contains a test sequence file in the roo...

Страница 101: ... the memory slot the test sequence was saved to Note Error messages If you load a file that is not present on the USB drive Err 002 will be displayed on the display Run Test Sequence Overview A test sequence can be run from one of ten memory slots Steps 1 Before a test sequence can be run it must first be loaded into one of the 10 memory slots Page 96 2 Configure T 01 Run Test sequence to 1 10 sav...

Страница 102: ...ct If you wish to stop a test early turn the power off Export Test Sequence to USB Overview The Export test sequence function saves a test sequence file to the root directory of a USB flash drive Test Sequence Files will be saved as tXXX csv where XXX is the memory number 001 010 from which the test sequence was exported from Test Sequence Files of the same name on the USB flash drive will be writ...

Страница 103: ... reinsert the USB flash drive 3 Configure T 03 Test Sequence Export from 0 10 internal memory slot Page 95 T 03 range 1 10 4 The test sequence file will now be copied to the USB flash drive Note Error messages If you try to export a test sequence from an empty memory location Err 003 will be displayed on the display Remove Test Sequence Overview The Remove Test Sequence function will delete a test...

Страница 104: ...n the display Test Sequence Error Messages Overview The following error code numbers may appear on the display when trying to run a test sequence Use the error code numbers determine the cause of the error For example If Error 52 appears on the display it indicates that one of the Time sec fields is over range for the test sequence Error Details 1 _SEQ_ERR__FILE_NOT_FOUND 2 _SEQ_ERR__FILE_IS_TOO_L...

Страница 105: ..._ERR__STEP_DATA_ERROR 21 _SEQ_ERR__STEP_DATA_OVER_RANGE 22 _SEQ_ERR__NO_STEP_DATA 30 _SEQ_ERR__POINT_DATA_ERROR 31 _SEQ_ERR__START_POINT_GREATER_THAN_END_ POINT 32 _SEQ_ERR__START_POINT_REPEAT 33 _SEQ_ERR__END_POINT_REPEAT 40 _SEQ_ERR__OUTPUT_DATA_ERROR 50 _SEQ_ERR__TIME_DATA_ERROR 51 _SEQ_ERR__NEGATIVE_TIME 52 _SEQ_ERR__TIME_OVER_RANGE 60 _SEQ_ERR__VOLTAGE_DATA_ERROR 61 _SEQ_ERR__NEGATIVE_VOLTAGE...

Страница 106: ...tion 103 Configuration Table 103 Normal Function Settings 108 USB GPIB Settings 113 LAN Settings 114 System Settings 115 Power On Configuration Settings 116 Calibration 117 Setting Normal Function Settings 118 Setting Power On Configuration Settings 120 ...

Страница 107: ...ings are numbered F 90 to F 95 and the other configuration settings are numbered F 00 to F 61 and F 88 to F 89 Configuration Table Please use the configuration settings listed below when applying the configuration settings Normal Function Settings Setting Setting Range Output ON delay time F 01 0 00s 99 99s Output OFF delay time F 02 0 00s 99 99s V I mode slew rate select F 03 0 CV high speed prio...

Страница 108: ... 27 00A s 2260B 80 13 0 01A s 54 00A s 2260B 80 27 0 01A s 81 00A s 2260B 80 40 0 001A s 9 000A s 2260B 250 4 0 01A s 18 00A s 2260B 250 9 0 01A s 27 00A s 2260B 250 13 0 001A s 2 880A s 2260B 800 1 0 001A s 5 760A s 2260B 800 2 0 001A s 8 640A s 2260B 800 4 Internal resistance setting F 08 0 000Ω 0 833Ω 2260B 30 36 0 000Ω 0 417Ω 2260B 30 72 0 000Ω 0 278Ω 2260B 30 108 0 000Ω 5 926Ω 2260B 80 13 0 0...

Страница 109: ...0x00 0xFF MAC Address 5 F 34 0x00 0xFF MAC Address 6 F 35 0x00 0xFF LAN F 36 0 Disable 1 Enable DHCP F 37 0 Disable 1 Enable IP Address 1 F 39 0 255 IP Address 2 F 40 0 255 IP Address 3 F 41 0 255 IP Address 4 F 42 0 255 Subnet Mask 1 F 43 0 255 Subnet Mask 2 F 44 0 255 Subnet Mask 3 F 45 0 255 Subnet Mask 4 F 46 0 255 Gateway 1 F 47 0 255 Gateway 2 F 48 0 255 Gateway 3 F 49 0 255 Gateway 4 F 50 0...

Страница 110: ...ternal resistance control Ext R 10kΩ Vo max 3 External resistance control Ext R 10kΩ 0 CC Control F 91 0 Panel control local 1 External voltage control 2 External resistance control Ext R 10kΩ Io max 3 External resistance control Ext R 10kΩ 0 Power ON Output F 92 0 OFF at startup 1 ON at startup T001 T010 Run Test Sequence TXX at start up Master Slave F 93 0 Master Local 1 Master Parallel1 2 Maste...

Страница 111: ...CONFIGURATION 107 Note Power On and Calibration settings can only be set during power up ...

Страница 112: ...n error of 20ms The Output ON Delay Time setting is disabled when the output is set to external control DLY F 01 0 00s 99 99s Output OFF Delay Time Delays turning the output off for a designated amount of time The Delay indicator will light when the Delay time is not 0 Note The Output OFF Delay Time setting has a maximum deviation error of 20ms The Output OFF Delay Time setting is disabled when th...

Страница 113: ... CC Slew Rate priority VSR CV Slew Rate priority F 03 0 CV high speed priority 1 CC high speed priority 2 CV slew rate priority 3 CC slew rate priority Rising Voltage Slew Rate Sets the rising voltage slew rate Only applicable if V I Mode is set to CV Slew Rate Priority F 04 0 01V s 60V s 2260B 30 XX 0 1V s 160V s 2260B 80 XX 0 1V s 500 0V s 2260B 250 XX 1V s 1600V s 2260B 800 XX Falling Voltage S...

Страница 114: ... s 27 00A s 2260B 250 13 0 001A s 2 880A s 2260B 800 1 0 001A s 5 760A s 2260B 800 2 0 001A s 8 640A s 2260B 800 4 Falling Current Slew Rate Sets the falling current slew rate Only applicable if V I Mode is set to CC Slew Rate Priority F 07 0 01A s 72 00A s 2260B 30 36 0 1A s 144 0A s 2260B 30 72 0 1A s 216 0A s 2260B 30 108 0 01A s 27 00A s 2260B 80 13 0 01A s 54 00A s 2260B 80 27 0 01A s 81 00A ...

Страница 115: ...N OFF the bleeder resistor When set to AUTO the bleeder resistor is automatically turned on when the output is turned on and turned off when the output is turned off Bleeder resistors discharge the filter capacitors after power is turned off as a safety measure The AUTO setting is only applicable to firmware version 1 59 or above F 09 0 OFF 1 ON 2 AUTO Buzzer ON OFF Turns the buzzer sound on or of...

Страница 116: ... measurements to update for the three settings will be approximately Low 0 25sec Middle 1 5sec High 2 5sec Lock Mode Determines the behavior of the Output key when the panel lock is on Only available for firmware version 1 54 or above F 19 0 Panel lock allow output off 1 Panel lock allow output on off ...

Страница 117: ...1 0 Absent 2 USB CDC 3 GPIB USB adapter Rear Panel USB Mode Sets the rear panel USB mode Note Option 3 USB CDC Full Speed Only can be used to reduce the data transmission speed when there are sources of interference in the operating environment This option is only available for firmware version 1 66 and above F 22 0 Disable 1 GPIB USB adapter for 2260B GPIB USB 2 USB CDC Auto Detect Speed 3 USB CD...

Страница 118: ...9 F 40 F 41 F 42 0 255 0 255 0 255 0 255 Subnet Mask 1 4 Sets the subnet mask The subnet mask is split into four parts F 43 F 44 F 45 F 46 0 255 0 255 0 255 0 255 Gateway 1 4 Sets the gateway address The gateway address is split into 4 parts F 47 F 48 F 49 F 50 0 255 0 255 0 255 0 255 DNS Address 1 4 Sets the DNS address The DNS address is split into 4 parts F 51 F 52 F 53 F 54 0 255 0 255 0 255 0...

Страница 119: ...ry default settings See page 173 for a list of the default settings F 88 0 Disable 1 Return to factory default settings Show Version Displays the 2260B version number build date keyboard version analog control version and kernel build F 89 0 1 Version 2 3 Build year 4 5 Build month day 6 7 Keyboard CPLD version 8 9 Analog Control CPLD version A B Reserved C D Kernel build year E F Kernel build mon...

Страница 120: ... control Ext R 10kΩ Vo max 3 External resistance control Ext R 10kΩ 0 CC Control Sets the constant current CC control mode between local and external voltage resistance control For details on external voltage control see page 128 External Voltage Control of Current Output and 132 External Resistance Control of Current Output F 91 0 Panel control local 1 External voltage control 2 External resistan...

Страница 121: ...gic Sets the external logic as active high or low F 94 0 High ON 1 Low ON Power Switch Trip Turns the power off if enabled when the protection settings are tripped F 95 1 Disable 0 Enable Calibration Programmable Calibration The calibration password is used to access the local mode calibration or other special functions The password used determines which function is accessed Please see your distri...

Страница 122: ...d not edited Configuration settings F 90 F 95 cannot be edited in the Normal Function Settings Use the Power On Configuration Settings See page 120 for details Steps 1 Press the Function key The function key will light up 2 The display will show F 01 on the top and the configuration setting for F 01 on the bottom 3 Rotate the Voltage knob to change the F setting Voltage Range F 00 F 61 F 88 F 89 4...

Страница 123: ...119 5 Press the Voltage knob to save the configuration setting ConF will be displayed when successful Voltage Exit Press the Function key again to exit the configuration settings The function key light will turn off ...

Страница 124: ...being inadvertently changed Ensure the load is not connected Ensure the power supply is off Steps 1 Hold the Function key while turning the power on 2 The display will show F 90 on the top and the configuration setting for F 90 on the bottom 3 Rotate the Voltage knob to change the F setting Voltage Range F 90 F 95 4 Use the Current knob to set the parameter for the chosen F setting Current ...

Страница 125: ...CONFIGURATION 121 5 Press the Voltage knob to save the configuration setting ConF will be displayed when successful Voltage Exit Cycle the power to save and exit the configuration settings ...

Страница 126: ...own the power supply Analog Remote Control Overview 123 Analog Control Connector Overview 123 External Voltage Control of Voltage Output 125 External Voltage Control of Current Output 128 External Resistance Control of Voltage Output 130 External Resistance Control of Current Output 132 External Control of Output 134 External control of Shutdown 137 Remote Monitoring 139 External Voltage and Curre...

Страница 127: ...al resistance control of voltage output from page 130 External resistance control of current output from page 132 External control of output from page 134 External control of the power switch from page 137 Analog Control Connector Overview Overview The Analog Control Connector is a standard Mil 26 pin connector OMRON XG4 IDC plug The connector is used for all analog remote control The pins used de...

Страница 128: ...of 0kΩ 10kΩ is used to control the full scale voltage output 0 100 of the instrument EXT R CC CONT PIN1 8 External resistance control of the current output A resistance of 0kΩ 10kΩ is used to control the full scale current output 0 100 of the instrument EXT R CC CONT PIN2 9 External resistance control of the current output A resistance of 0kΩ 10kΩ is used to control the full scale current output 0...

Страница 129: ...hoto coupled open collector output OUTPUT ON STATUS 21 Turns on when the output has been turned on photo coupled open collector output POWER OFF STATUS 22 Turns on when the power switch is turned off N C 23 Not connected OUT ON OFF CONT 24 Turns the output on off when default setting a low TTL signal is applied Internally the circuit is pulled up to 5V with 10kΩ resistance SER SLV IN 25 Series sla...

Страница 130: ...gative output terminal Connection alt shielding If the wire shield needs to be grounded at the voltage source EXT V then the shield cannot also be grounded at the negative terminal output of the 2260B power supply This would short the output 2260B EXT V Analog connector 16 4 Output Terminal 2 core shielded wire or twisted pair Pin16 EXT V Pin4 EXT V Wire shield EXT V ground GND Panel operation 1 C...

Страница 131: ...oltage can now be controlled with the External voltage Note The input impedance for external voltage control is 10kΩ Use a stable voltage supply for the external voltage control Note CV and CC Slew Rate Priority are disabled for V I mode F 03 when using external voltage control See the normal function settings on page 108 CAUTION Ensure no more than 10 5 volts are input into the external voltage i...

Страница 132: ...ltage of 0 10V is used to control the full scale current of the instrument where Output current full scale current external voltage 10 Connection When connecting the external voltage source to the MIL connectors use shielded or twisted paired wiring 2260B EXT V Analog connector 16 5 Output Terminal 2 core shielded wire or twisted pair Pin16 EXT V Pin5 EXT V Wire shield negative output terminal ...

Страница 133: ...nal 2 core shielded wire or twisted pair Pin16 EXT V Pin5 EXT V Wire shield EXT V ground GND Steps 1 Connect the external voltage according to the connection diagrams above 2 Set the F 91 power on configuration setting to 1 CC control Ext voltage Page 120 Be sure to cycle the power after the power on configuration has been set 3 Press the Function key and confirm the new configuration settings F 9...

Страница 134: ...han 10 5 volts are input into the external voltage input External Resistance Control of Voltage Output Background External resistance control of the voltage output is accomplished using the MIL 26 connector on the rear panel A resistance of 0kΩ 10kΩ is used to control the full scale voltage of the instrument The output voltage 0 to full scale can be controlled with the external resistance going up...

Страница 135: ...ting open circuits Use short circuit or continuous resistance switches Connection 2260B EXT R Analog connector 7 6 Output Terminal 2 core shielded wire or twisted pair Pin6 EXT R Pin7 EXT R Wire shield negative output terminal Steps 1 Connect the external resistance according to the connection diagrams above 2 Set the F 90 CV Control configuration settings to 2 for Ext R or 3 for Ext R Page 120 Be...

Страница 136: ...r V I mode F 03 when using external resistance control See the normal function settings on page 108 External Resistance Control of Current Output Background External resistance control of the current output is accomplished using the MIL 26 connector on the rear panel A resistance of 0kΩ 10kΩ is used to control the full scale current of the instrument The output current 0 to full scale can be contr...

Страница 137: ...ting open circuits Use short circuit or continuous resistance switches Connection 2260B EXT R Analog connector 8 9 Output Terminal 2 core shielded wire or twisted pair Pin9 EXT R Pin8 EXT R Wire shield negative output terminal Steps 1 Connect the external resistance according to the connection diagrams above 2 Set the F 91 CC Control configuration settings to 2 for Ext R or 3 for Ext R Page 120 Be...

Страница 138: ...and CC Slew Rate Priority are disabled for V I mode F 03 when using external resistance control See the normal function settings on page 108 External Control of Output Background The output can be turned on or off externally using a switch The analog control connector can be set to turn the output on from a high or low signal The voltage across pins 2 and 24 are internally pulled to 5V 5 500uA wit...

Страница 139: ...Steps 1 Connect the external switch according to the connection diagrams above Set F 94 External output logic in the power on configuration settings to 0 High On or 1 Low On Be sure to cycle the power after setting the power on configuration settings Page 120 2 Press the Function key and confirm the new configuration settings 3 The switch is now ready to set the output on or off ...

Страница 140: ...ning Ensure the cables used and the switch exceed the isolation voltage of the power supply For example insulation tubes with a withstand voltage higher than the power supply can be used Note Messages If F 94 0 High on and the pin 24 is low 0 MSG 001 will be displayed on the display If F 94 1 Low on and the pin 24 is high 1 MSG 002 will be displayed on the display Output off High on Output off Low...

Страница 141: ... 5 500uA with 10kΩ pull up resistor Connection 2260B Switch Analog connector 12 2 Output Terminal 2 core shielded wire or twisted pair Pin2 Switch Pin12 Switch Wire shield negative output terminal Steps 1 Connect the external switches according to the connection diagrams above 2 Set F 95 to in the configuration settings to 0 Enable This will allow the external control of shutdown Page 120 3 Press ...

Страница 142: ...ine extention Analog connector Output Terminal 12 2 If a single switch control is to be used for multiple units please isolate each instrument This can be achieved by using a relay Warning Ensure the cables and switch used exceed the isolation voltage of the power supply For example insulation tubes with a withstand voltage higher than the power supply can be used ...

Страница 143: ...l monitoring of operation mode and alarm status from page 141 External Voltage and Current Monitoring Background The MIL 26 pin connector is used to monitor the current IMON or voltage VMON output An output of 0 10V represents the voltage or current output of 0 rated current voltage output IMON current output full scale 10 VMON voltage output full scale 10 External voltage and current monitoring d...

Страница 144: ...rminal I MON 0 10V Pin16 Neg Pin11 Pos Note The output impedance of the voltage VMON and current IMON monitor pins is 1kΩ Maximum current is 10mA The monitor outputs are strictly DC and should not be used to monitor analog components such as transient voltage response or ripple etc CAUTION Ensure IMON pin 11 and VMON pin 10 are not shorted together This will cause damage to the unit ...

Страница 145: ... coupler emitter output while pins 18 22 are photo coupler collector outputs A maximum of 30V and 8mA can be applied to each pin Name and Pin Description STATUS COM 17 Common photo coupler emitter for status signals 18 19 20 21 and 22 CV STATUS 18 Low when CV mode is active CC STATUS 19 Low when CC mode is active ALM STATUS 20 Low when any of the protection modes are tripped OVP OCP Active low OUT...

Страница 146: ...ve low CV MODE Output turned on The diagram below shows the timing diagram when the output is turned on when the 2260B is set to CV mode CV status H L CC status H L Output status H L CV MODE Output turned off The diagram below shows the output status lines when the output is turned off in CV mode CV status H L CC status H L Output status OFF ON ...

Страница 147: ...g diagram when the output is turned on when the 2260B is set to CC mode CV status H L CC status H L Output status H L CC MODE Output turned off The diagram below shows the output status lines when the output is turned off in CC mode CV status H L CC status H L Output status H L ...

Страница 148: ... For a command list refer to the programming manual Interface Configuration 145 USB Remote Interface 145 Configure GPIB Interface 145 Configure Ethernet Connection 147 Web Server Configuration 147 Sockets Server Configuration 148 USB Function Check 149 Web Server Remote Control Function Check 152 Socket Server Function Check 153 ...

Страница 149: ...he rear panel USB B port 2 Change the Rear panel USB F 22 setting to USB CDC 2 Page 118 Configure GPIB Interface To use GPIB the optional GPIB to USB 2260B GPIB USB adapter must be used Only one GPIB address can be used at a time Configure GPIB 1 Ensure the 2260B is off before proceeding 2 Connect the USB cable from the rear panel USB B port on the 2260B to the USB A port on the GPIB to USB adapte...

Страница 150: ...r the Normal configuration settings Page 118 Set the following GPIB settings F 22 1 Set the rear panel USB port to GPIB USB F 23 0 30 Set the GPIB address 0 30 GPIB constraints Maximum 15 devices altogether 20m cable length 2m between each device Unique address assigned to each device At least 2 3 of the devices turned On No loop or parallel connection ...

Страница 151: ... network settings can be manually configured Ethernet configuration Parameters For details on how to configure the Ethernet settings please see the configuration chapter on page 114 MAC Address display only LAN DHCP IP Address Subnet Mask Gateway DNS Address Sockets Active Web Server Active Web Password Active Web set password 0000 9999 default 0000 Web Server Configuration Configuration This conf...

Страница 152: ... server The following configuration settings will manually assign the 2260B an IP address and enable the socket server By default the socket server port number is 2268 and cannot be configured 1 Connect an Ethernet cable from the network to the rear panel Ethernet port LAN 2 Press the Function key to enter the Normal configuration settings Page 118 Set the following LAN settings F 36 1 Enable LAN ...

Страница 153: ... can be used This program is available on the NI website www ni com via a search for the VISA Run time Engine page or downloads at the following URL http www ni com visa Requirements Operating System Windows 7 XP Note The 2260B will appear as a COM port on the PC To check the COM port No see the Device Manager in the PC For Win 7 Control panel Hardware and Sound Device Manager Functionality check ...

Страница 154: ...2260B Series User Manual 150 2 From the Configuration panel access My System Devices and Interfaces 2 3 Select COM7 4 Press Open VISA Test Panel 3 4 Note The displayed COM port No may differ with the ...

Страница 155: ...he Configuration icon 6 In the I O Settings tab select the Enable Termination Character check box Ensure Line Feed n is selected as the line feed character 7 Click Apply Changes 5 6 7 8 Click the Input Output icon 9 Ensure IDN n is selected in the Select or Enter Command dropdown text box 10 Click the Query button 11 The IDN query should be returned to the buffer area ...

Страница 156: ... Web Server Remote Control Function Check Functionality check Enter the IP address of the power supply in a web browser after the instrument has been configured as a web server page 147 http XXX XXX XXX XXX The web browser interface appears Note For further details please see the programming manual ...

Страница 157: ...w ni com via a search for the VISA Run time Engine page or downloads at the following URL http www ni com visa Requirements Operating System Windows 7 XP Functionality check 1 Start the NI Measurement and Automation Explorer MAX program Using Windows press Start All Programs National Instruments Measurement Automation 2 From the Configuration panel access My System Devices and Interfaces Network D...

Страница 158: ...urce 2 3 4 5 Select Manual Entry of Raw Socket from the popup window 6 Click Next 5 6 7 Enter the IP address and the port number of the 2260B The port number is fixed at 2268 8 Click the Validate button A popup box will appear when successful 9 Click Next ...

Страница 159: ...7 10 Next configure the Alias name of the 2260B connection In this example the Alias is PS_DC1 11 Click finish 10 11 12 The IP address of the 2260B will now appear under Network Devices in the configuration panel Select this icon now ...

Страница 160: ...In the I O Settings tab select the Enable Termination Character check box Ensure Line Feed n is selected as the line feed character 16 Click Apply Changes 14 15 16 17 Click the Input Output icon 18 Ensure IDN n is selected in the Select or Enter Command dropdown text box 19 Click the Query button ...

Страница 161: ...COMMUNICATION INTERFACE 157 20 The IDN query should be returned to the buffer area 17 18 19 20 Note For further details please see the programming manual ...

Страница 162: ...FIRMWARE UPGRADE PROCEDURE 158 FIRMWARE UPGRADE PROCEDURE Firmware Update 159 Check the Firmware Version 162 Kernel Update 164 Check the Kernel Version 167 ...

Страница 163: ...he front panel of the Keithley 2260B Uncompress this zipped file to the root directory USB The root directory needs to contain the keithley folder 2 Press the Function key The function key will light up 3 The display will show F 01 on the top and the configuration setting for F 01 on the bottom 4 Rotate the voltage knob to change the F setting to F 00 Voltage 5 The display will show F 00 on the to...

Страница 164: ...age knob to enter the Special Mode SF 1 will be displayed when successful Voltage X can be anything in the display 8 Rotate the voltage knob to change the SF setting to SF 2 Voltage 9 The display will show SF 2 on the top 10 Use the current knob to set SF 2 to 1 Current 11 Press the Voltage knob to copy the new firmware to the 2260B Voltage ...

Страница 165: ...FIRMWARE UPGRADE PROCEDURE 161 12 On progressing the display will look as shown below 13 When the display looks as shown below the system will reboot automatically or ...

Страница 166: ...on analog control version and kernel build Steps 1 Press the Function key The Function key will light up 2 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 3 Rotate the Voltage knob to change the F setting to F 89 Show Version Voltage 4 Rotate the Current knob to view the version and build date for the various items Current ...

Страница 167: ...nalog CPLD version 9 XX Analog CPLD version A XX Reserved B XX Reserved C XX Kernel Build On Year D XX Kernel Build On Year E XX Kernel Build On Month F XX Kernel Build On Day 5 Press the Function key again to exit The function key light will turn off Example Main Program Version Vt1 50 2014 08 03 0 t1 Main Program Version 1 50 Main Program Version 2 20 Main Program Build On Year 3 14 Main Program...

Страница 168: ... off 1 Insert the USB Flash Drive with keithley 2 The keithley folder includes ps_os blk 3 Press the Function key The function key will light up 4 The display will show F 01 on the top and the configuration setting for F 01 on the bottom 5 Rotate the voltage knob to change the F setting to F 00 Voltage ...

Страница 169: ...he F 00 setting The Password is 5 0 0 4 Current 8 Press the Voltage knob to enter the Special Mode SF 1 will be displayed when successful Voltage X the display can be anything 9 Rotate the voltage knob to change the SF setting to SF 6 Voltage 10 The display will show SF 6 on the top 11 Use the current knob to set the value for SF 6 The value is 2 Current ...

Страница 170: ...12 Press the Voltage knob to copy the new kernel to the 2260B Voltage 13 On progressing the display will look as follows 14 After the update has finished SF 6 and ok will be displayed 3 sec 15 Cycle Power to complete this procedure ...

Страница 171: ...on analog control version and kernel build Steps 1 Press the Function key The Function key will light up 2 The display should show F 01 on the top and the configuration setting for F 01 on the bottom 3 Rotate the Voltage knob to change the F setting to F 89 Show Version Voltage 4 Rotate the Current knob to view the version and build date for the various items Current ...

Страница 172: ...D version 7 XX Keyboard CPLD version 8 XX Analog CPLD version 9 XX Analog CPLD version A XX Reserved B XX Reserved C XX Kernel Build On Year D XX Kernel Build On Year E XX Kernel Build On Month F XX Kernel Build On Day 5 Press the Function key again to exit The function key light will turn off Example Kernel Version 2014 08 03 C 20 Kernel Build On Year D 14 Kernel Build On Year E 08 Kernel Build O...

Страница 173: ...MAINTENANCE 169 MAINTENANCE The 2260B power supply filters should be replaced on a periodic schedule to maintain performance and specification characteristics Replacing the Dust Filter 170 ...

Страница 174: ...gular basis will reduce performance and may cause the unit to overheat Front panel filter all models 1 Turn the instrument off 2 Pull the filter out from the bottom of the front panel 3 Replace the filter Side panel filters 720W 1080W 1 Lift the side panel up and away from the case 2 Remove the filter from the grill and replace with a new filter ...

Страница 175: ...the Power On Configuration Mode See page 120 The OVP voltage is triggered earlier than expected When setting the OVP voltage take into account the voltage drop from the load cables As the OVP level is set from the output terminals and not the load terminals the voltage at the load terminals may be slightly lower Can I combine more than 1 cable together for the output wiring Yes Cables can be used ...

Страница 176: ...s not match the specification Make sure the device is powered On for at least 30 minutes within 20 C 30 C This is necessary to stabilize the unit to match the specification For more information contact your local Tektronix Keithley representative ...

Страница 177: ... Output Off LOCK 0 Disabled Voltage 0V Current 0A OVP Maximum OCP Maximum Normal Function Settings Setting Default Setting Output ON delay time F 01 0 00s Output OFF delay time F 02 0 00s V I mode slew rate select F 03 0 CV high speed priority Rising voltage slew rate F 04 60 00V s 2260B 30 XX 160 0V s 2260B 80 XX 500 0V s 2260B 250 XX 1600V s 2260B 800 XX Falling voltage slew rate F 05 60 00V s 2...

Страница 178: ... 00A s 2260B 80 13 54 00A s 2260B 80 27 81 00A s 2260B 80 40 9 000A s 2260B 250 4 18 00A s 2260B 250 9 27 00A s 2260B 250 13 2 880A s 2260B 800 1 5 760A s 2260B 800 2 8 640A s 2260B 800 4 Internal resistance setting F 08 0 000Ω Bleeder circuit control F 09 1 ON Buzzer ON OFF control F 10 1 ON Measurement Average Setting F 17 0 Low Lock Mode F 19 0 Panel lock allow output off USB GPIB setting Rear ...

Страница 179: ...0000 Power On Configuration CV Control F 90 0 Panel control local CC Control F 91 0 Panel control local Power ON Output F 92 0 OFF at startup Master Slave F 93 0 Master Local External Out Logic F 94 0 High ON Power Switch trip F 95 0 Enable ...

Страница 180: ...ocation Err 004 File access error Note For error messages other than Err 001 to Err 004 please contact your distributor for service repair Messages Description MSG 001 External control of output Output off F 94 0 High on MSG 002 External control of output Output off F 94 1 Low on MSG 003 F 93 is not zero Unable to calibrate LED Display Format Use the following table to read the LED display message...

Страница 181: ...ulation 2 mV 20 45 130 405 Ripple and Noise 3 p p 4 mV 60 60 80 150 r m s 5 mV 7 7 15 30 Temperature coefficient ppm ºC 100ppm C of rated output voltage after a 30 minute warm up Remote sense compensation voltage single wire V 0 6 0 6 1 1 Rise Time 6 Rated Load ms 50 50 100 150 No Load ms 50 50 100 150 Fall Time 7 Rated Load ms 50 50 150 300 No Load ms 500 500 1200 2000 Transient response time 8 m...

Страница 182: ...nearity 0 5 of rated output voltage External voltage control output current at 23 C 5 C Accuracy and linearity 1 of rated output current External resistor control output voltage at 23 C 5 C Accuracy and linearity 1 5 of rated output voltage External resistor control output current at 23 C 5 C Accuracy and linearity 1 5 of rated output current Output voltage monitor at 23 C 5 C Accuracy 1 1 2 2 Out...

Страница 183: ...APPENDIX 179 CV CC ALM PWR ON OUT ON indicator Photocoupler open collector output Maximum voltage 30V maximum sink current 8mA ...

Страница 184: ... current programm ing accuracy at 23 C 5 C 0 1 mA 30 10 5 2 Output voltage programming resolution mV 1 2 5 14 Output current programming resolution mA 1 1 1 1 Output voltage measure ment accuracy at 23 C 5 C 0 1 mV 10 10 200 400 Output current measure ment accuracy at 23 C 5 C 0 1 mA 30 10 5 2 Output voltage measurement resolution mV 1 2 5 14 Output current measurement resolution mA 1 1 1 1 Series...

Страница 185: ...ng humidity 20 to 85 RH No condensation Storage humidity 90 RH or less No condensation Altitude Maximum 2000m General Specifications Weight main unit only kg Approx 3kg Dimensions WxHxD mm3 71 124 350 Cooling Forced air cooling by internal fan EMC Complies with the European EMC directive 2004 108 EC for Class A test and measurement products Safety Complies with the European Low Voltage Directive 2...

Страница 186: ...put voltage Measured at the sensing point in Remote Sense 3 Measure with JEITA RC 9131B 1 1 probe 4 Measurement frequency bandwidth is 10Hz to 20MHz 5 Measurement frequency bandwidth is 5Hz to 1MHz 6 From 10 to 90 of rated output voltage with rated resistive load 7 From 90 to 10 of rated output voltage with rated resistive load 8 Time for output voltage to recover within 0 1 10mV of its rated outp...

Страница 187: ...C of rated output voltage after a 30 minute warm up Remote sense compensation voltage single wire V 0 6 0 6 1 1 Rise Time 6 Rated Load ms 50 50 100 150 No Load ms 50 50 100 150 Fall Time 7 Rated Load ms 50 50 150 300 No Load ms 500 500 1200 2000 Transient response time 8 ms 1 1 2 2 Constant Current Mode Line regulation 1 mA 77 32 14 7 88 Load regulation 9 mA 77 32 14 7 88 Ripple and noise r m s 5 ...

Страница 188: ...ternal resistor control output voltage at 23 C 5 C Accuracy and linearity 1 5 of rated output voltage External resistor control output current at 23 C 5 C Accuracy and linearity 1 5 of rated output current Output voltage monitor at 23 C 5 C Accuracy 1 1 2 2 Output current monitor at 23 C 5 C Accuracy 1 1 2 2 Shutdown control Turns the output off with a LOW 0V to 0 5V or short circuit Output on off...

Страница 189: ...programm ing accuracy at 23 C 5 C 0 1 mA 60 30 10 4 Output voltage programming resolution mV 1 2 5 14 Output current programming resolution mA 2 2 1 1 Output voltage measure ment accuracy at 23 C 5 C 0 1 mV 10 10 200 400 Output current measure ment accuracy at 23 C 5 C 0 1 mA 60 30 10 4 Output voltage measurement resolution mV 1 2 5 14 Output current measurement resolution mA 2 2 1 1 Series and Pa...

Страница 190: ... Series User Manual 186 200Vac A 5 Inrush current Less than 50A Maximum input power VA 1000 Power factor 100Vac 0 99 200Vac 0 97 Efficiency 100Vac 77 78 79 80 200Vac 79 80 81 82 Hold up time 20ms or greater ...

Страница 191: ...MC directive 2004 108 EC for Class A test and measurement products Safety Complies with the European Low Voltage Directive 2006 95 EC and carries the CE marking Withstand voltage Between input and chassis No abnormalities at 1500 Vac for 1 minute Between input and output No abnormalities at 3000 Vac for 1 minute Between output and chassis No abnormalities at 500 Vdc for 1 minute for 30V and 80V mo...

Страница 192: ...5Hz to 1MHz 6 From 10 to 90 of rated output voltage with rated resistive load 7 From 90 to 10 of rated output voltage with rated resistive load 8 Time for output voltage to recover within 0 1 10mV of its rated output for a load change from 50 to 100 of its rated output current 9 For load voltage change equal to the unit voltage rating constant input voltage ...

Страница 193: ... 4 mV 100 100 120 200 r m s 5 mV 14 14 15 30 Temperature coefficient ppm ºC 100ppm C of rated output voltage after a 30 minute warm up Remote sense compensation voltage single wire V 0 6 0 6 1 1 Rise Time 6 Rated Load ms 50 50 100 150 No Load ms 50 50 100 150 Fall Time 7 Rated Load ms 50 50 150 300 No Load ms 500 500 1200 2000 Transient response time 8 ms 1 1 2 2 Constant Current Mode Line regulat...

Страница 194: ...nearity 0 5 of rated output voltage External voltage control output current at 23 C 5 C Accuracy and linearity 1 of rated output current External resistor control output voltage at 23 C 5 C Accuracy and linearity 1 5 of rated output voltage External resistor control output current at 23 C 5 C Accuracy and linearity 1 5 of rated output current Output voltage monitor at 23 C 5 C Accuracy 1 1 2 2 Out...

Страница 195: ... Type A USB connector Programming and Measurement USB LAN GPIB Output voltage programm ing accuracy at 23 C 5 C 0 1 mV 10 10 200 400 Output current programm ing accuracy at 23 C 5 C 0 1 mA 100 40 15 6 Output voltage programming resolution mV 1 2 5 14 Output current programming resolution mA 3 3 1 1 Output voltage measure ment accuracy at 23 C 5 C 0 1 mV 10 10 200 400 Output current measure ment ac...

Страница 196: ...ency 100Vac 77 78 79 80 200Vac 79 80 81 82 Hold up time 20ms or greater Interface Capabilities USB TypeA Host TypeB Slave Speed 1 1 2 0 USB Class CDC Communications Device Class LAN MAC Address DNS IP Address User Password Gateway IP Address Instrument IP Address Subnet Mask GPIB Optional GUG 001 GPIB to USB Adapter Environmental Conditions Operating temperature 0 C to 50 C Storage temperature 25 ...

Страница 197: ...tion resistance Between input and chassis 500 Vdc 100MΩ or more Between input and output 500 Vdc 100MΩ or more Between output and chassis 500 Vdc 100MΩ or more for 30V 80V and 250V models 1000Vdc 100MΩ or more for 800V models 1 At 85 132Vac or 170 265Vac constant load 2 From No load to Full load constant input voltage Measured at the sensing point in Remote Sense 3 Measure with JEITA RC 9131B 1 1 ...

Страница 198: ...2260B Series User Manual 194 2260B Dimensions 360W 2260B 80 13 2260B 30 36 scale mm 33 8 18 12 6 123 8 268 31 333 3 332 5 37 8 10 9 10 9 47 5 14 5 30 5 39 5 19 8 39 7 16 3 Ø 8 M4 46 70 8 123 8 ...

Страница 199: ...APPENDIX 195 360W 2260B 250 4 2260B 800 1 scale mm 59 9 333 3 18 33 8 31 268 12 6 123 8 70 8 82 8 24 46 19 7 15 4 11 4 20 16 97 8 30 48 3 81 ...

Страница 200: ...2260B Series User Manual 196 720W 2260B 80 27 2260B 30 72 scale mm 18 268 31 12 6 123 8 33 8 21 333 3 332 5 70 9 21 278 28 21 18 16 3 37 8 19 8 10 9 39 7 10 9 14 5 30 5 39 5 47 5 99 6 141 8 123 8 7 8 ...

Страница 201: ...APPENDIX 197 720W 2260B 250 9 2260B 800 2 scale mm 33 5 333 3 123 8 131 6 12 6 31 268 21 278 30 48 91 16 97 8 82 4 3 81 21 18 141 8 70 9 82 8 24 130 9 28 99 6 15 4 19 7 ...

Страница 202: ...2260B Series User Manual 198 1080W 2260B 80 40 2260B 30 108 scale mm 106 4 21 18 21 278 18 21 33 8 332 5 333 3 123 8 12 6 31 273 47 5 39 5 30 5 14 5 87 3 37 8 10 9 10 9 110 7 90 8 212 8 123 8 7 8 160 6 ...

Страница 203: ...APPENDIX 199 1080W 2260B 250 13 2260B 800 4 scale mm 91 16 18 21 28 12 6 123 8 31 237 33 8 333 3 212 8 106 4 131 6 160 6 82 8 24 201 9 19 7 15 4 278 21 82 42 97 8 30 48 3 81 ...

Страница 204: ... Electromagnetic Compatibility and Low Voltage Directive the following standards were applied EMC EN 61326 1 EN 61326 2 1 Electrical equipment for measurement control and laboratory use EMC requirements 2006 Conducted Radiated Emission EN 55011 2009 A1 2010 Electrostatic Discharge EN 61000 4 2 2009 Current Harmonics EN 61000 3 2 2006 A1 2009 A2 2009 Radiated Immunity EN 61000 4 3 2006 A1 2008 A2 2...

Страница 205: ...peration 118 159 164 overview 103 power on configuration operation120 power on configuration settings 116 System settings 115 table 103 test sequence settings 94 USB GPIB settings 113 utility function settings 95 Connector plug manufacturer23 49 Conventions 54 CV mode operation 63 DECA SwitchLab 23 49 Declaration of conformity 200 Default settings 173 reset 56 Dimensions diagram 194 Display format...

Страница 206: ...ntrol 144 interface configuration 145 Remote sense connection 74 operation 71 Series mode connection 86 Operation 88 overview 84 Service operation about disassembly 6 contact 172 Slew rate description 30 Socket server function check149 153 Specifications 177 2260B 160 14 4 183 2260B 160 21 6 189 2260B 160 7 2 177 2260B 250 13 5 189 2260B 250 4 5 177 2260B 250 9 183 2260B 30 108 189 2260B 30 36 177...

Страница 207: ...eithley Instruments Inc All other trademarks and trade names are the property of their respective companies Keithley Instruments Inc Corporate Headquarters 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY www keithley com A Tektronix Company A Greater Measure of Confidence 08 15 ...

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