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Keithley 2290-10 Скачать руководство пользователя страница 18

Section 2: Safe configuration and test setup

Model 2290-10 10 kV Power Supply User's Manual

2-4

2290-10-900-01 Rev. A/December 2013

Connecting the Model 2290-10 output to a custom text fixture

Keithley Instruments offers several accessories that can help you when building a custom test fixture

or system.
You can use a high-voltage SHV bulkhead connector (Model 2290-10-SHVBH) on your test fixture.

The following sections show you how to connect a Model 2290-10 to a custom fixture and also how to

make connections to the device inside the custom fixture.
The next figure shows typical high-voltage output connections.

Figure 5: Set up for testing a high-voltage diode in a safe enclosure

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Содержание 2290-10

Страница 1: ...www keithley com Model 2290 10 10 kV Power Supply User s Manual 2290 10 900 01 Rev A December 2013 P22901090001A 2290 10 900 01 A Tektronix Company A Greater Mesure of Confidence...

Страница 2: ...herein in whole or in part without the prior written approval of Keithley Instruments Inc is strictly prohibited All Keithley Instruments product names are trademarks or registered trademarks of Keith...

Страница 3: ...be connected to mains These instruments will be marked as category II or higher Unless explicitly allowed in the specifications operating manual and instrument labels do not connect any instrument to...

Страница 4: ...y disposed of according to federal state and local laws The WARNING heading in the user documentation explains dangers that might result in personal injury or death Always read the associated informat...

Страница 5: ...Safe configuration and test setup 2 1 Introduction 2 1 High voltage safety precautions 2 1 Safely connect to instruments 2 2 Line voltage selection 2 2 Interlock circuit 2 2 Connecting the interlock...

Страница 6: ...5 2 Standard event status register 5 2 Errors 6 1 Error and status messages 6 1 Table Error messages 6 1 Table Summarizes status messages 6 2 Table Programmatic errors 6 3 Typical applications 7 1 Int...

Страница 7: ...Model 2290 10 10 kV Power Supply User s Manual Table of Contents No high voltage 9 2 Service 9 2...

Страница 8: ...eted service expenses and provide additional years of protection at a fraction of the price of a repair Extended warranties are available on new and existing products Contact your local Keithley Instr...

Страница 9: ...capability Source currents up to 1 milliamps mA at 10 kV Ease of use Digital displays and the keypad simplify setting the voltage and current parameters Programmable voltage limit Voltage limit can b...

Страница 10: ...05 meters 10 feet Model 2290 10 SHV 10 kV SHV male to SHV male cable 3 05 meters 10 feet Model 2290 INT CABLE 3 pin interlock connector to unterminated cable 3 05 meters 10 feet Model 2290 10 SHVBH 10...

Страница 11: ...V Power Supply User s Manual 1 4 2290 10 900 01 Rev A December 2013 Front panel familiarization The Model 2290 10 front panel is shown below Descriptions of the controls on the front panel follow the...

Страница 12: ...e of the parameter that is entered or adjusted including Error and status messages that my occur A LED display Displays the output current SELECT ENTER CLR Clear button The SELECT button is used to ch...

Страница 13: ...g control of the high voltage output The MONITOR BNC jacks provide voltage and current monitor signals GPIB The 24 pin IEEE 488 STANDARD PORT GPIB allows computer control of the Model 2290 10 RS 232 T...

Страница 14: ...rged before removing or connecting the high voltage cable High voltage cables can store charge if they are disconnected from the supply while high voltage is turned on and can cause personal injury or...

Страница 15: ...n cause personal injury or death due to electric shock This unit should be used only by qualified personnel who recognize the dangers of high voltages Make certain that the source is turned off and th...

Страница 16: ...cord to a power source verify that the line voltage selector card located in the rear panel fuse holder is set for the correct AC line voltage This instrument may be damaged if operated with the line...

Страница 17: ...voltage supply The pin locations and connections are shown in the following figure The pins are Pin 3 Chassis ground Pin 2 Interlock enable Pin 1 5 V DC out current limited Figure 3 Model 2290 interl...

Страница 18: ...hat can help you when building a custom test fixture or system You can use a high voltage SHV bulkhead connector Model 2290 10 SHVBH on your test fixture The following sections show you how to connect...

Страница 19: ...ty ground 4 Test fixture interlocked metal safety enclosure A safety enclosure with an interlock that has a normally open NO switch 5 Test fixture lid interlock switch connection If you need to conver...

Страница 20: ...ecified in A The cursor buttons are used to adjust parameters Up arrow increments the digit Down arrow decrements the digit Left arrow cursor selects and moves the digit to the left Right arrow cursor...

Страница 21: ...show the actual output voltage in the VOLTAGE SET mode If you want to set the output voltage remotely refer to the command VSET n voltage set To set the output voltage using the rear panel analog inpu...

Страница 22: ...t value using either the numeric or cursor buttons 3 Press ENTER to update the actual limit value Set current trip The current trip shuts off the high voltage when the output current exceeds the trip...

Страница 23: ...mber button 0 9 for the configuration to be recalled RCL 0 returns the instrument to the factory default setup 3 Press the ENTER button Whenever a setup is recalled the high voltage is turned off for...

Страница 24: ...s There is also a SET BNC connection that is used to receive analog programming voltage To select the rear SET analog high voltage control press SELECT on the front panel until the REAR LED is on then...

Страница 25: ...he next table lists voltage monitor examples Output voltage Analog monitor examples 1000 V 1 V 3500 V 3 5 V 5000 V 5 V 10000 V 10 V Voltage Set This BNC jack becomes an analog control input for the hi...

Страница 26: ...ired common commands of the IEEE 488 2 1987 standard The cabling distance between the controller and instrument hub with GPIB is limited to 9 meters 30 feet In a system connected with GPIB you can hav...

Страница 27: ...t To minimize interference caused by electromagnetic radiation use only shielded GPIB cables Contact Keithley Instruments for shielded cables Figure 8 Model 2290 10 GPIB example connections To connect...

Страница 28: ...asterisk are IEEE 488 2 defined common commands Multiple commands Multiple commands may be sent on one command line by separating them with semicolons When several commands are included on the same l...

Страница 29: ...ed have no question mark Brackets indicate the parameter is optional An asterisk preceding the command indicates IEEE 488 2 common commands Parentheses shown in command descriptions indicate only that...

Страница 30: ...n where n ranges from 0 to 9 Setting 0 recalls the default settings If the stored setting is corrupted an error is returned Example RCL 0 Recall default setting SAV n The SAV Save command stores the...

Страница 31: ...n execution error will occur Example VLIM 500 Set 500 V voltage limit Default value 10000 V VSET n The VSET command sets the voltage output level to n If rear panel control is enabled an error is retu...

Страница 32: ...erial_number is the serial number of the particular unit version_number is the 3 digit firmware version level WAI The WAI common command is a synchronization command that halts further command process...

Страница 33: ...sters and enable registers are cleared on power up If n 0 the bit is cleared and the status enable registers maintain their values at power down This feature allows the generation of a service request...

Страница 34: ...hrough 15 of both the Standard Event Status Register and Standard Event Status Enable Register are not used in the Model 2290 10 and are always set to zero On power up the 2290 10 will either clear al...

Страница 35: ...Indicates that an unmasked bit in the Standard Event Status Register has been set 6 64 2 RQS MSS Request for Service Master Summary Status 7 128 HV on Indicates that the high voltage is on Note SRQ ma...

Страница 36: ...8 Recall Error Set if a stored configuration setting is corrupt 4 16 Execution Error Set by an out of range parameter or non completion of a command due to a condition such as an overload 5 32 Comman...

Страница 37: ...x error over GPIB Invalid command Err6 indicates the command had an error in syntax or was unrecognizable A syntax error could be a misspelling of a command This error will set the Command Error bit b...

Страница 38: ...izes status messages The next table summarizes the status messages Note that the message indicated in the next table is seen on the center display Message Description VTRP Voltage trip voltage limit e...

Страница 39: ...cution 100 Lost data query 101 No data query 102 No listener query 103 Overflow query 110 Illegal command parser 111 Undefined command parser 112 Illegal query parser 113 Illegal set parser 114 Null p...

Страница 40: ...th a Model 263xB System SourceMeter The Model 2290 10 is used to generate a basic linear voltage sweep across the diode and the Model 263xB is used to make a leakage current measurement on the diode P...

Страница 41: ...d that is the cathode should be connected to the HI output terminal of the Model 2290 10 Figure 11 Model 2290 10 reverse biased diode Item Description Notes 1 Model 2290 10 SHV high voltage cable 2 Mo...

Страница 42: ...IB address 14 ki2290 visa instrument GPIB 14 Reset and clear the status of the 2290 ki2290 write RST ki2290 write CLS ki2290 write RCL 0 Define sweep variables for the programmed output voltage and me...

Страница 43: ...of a test fixture on the enclosure of a semiconductor prober or device handler or on the door or doors of a test equipment rack In the next example the reverse bias sweep across the diode is performe...

Страница 44: ...Model 2290 10 10 kV Power Supply User s Manual Section 7 Typical applications 2290 10 900 01 Rev A December 2013 7 5 Figure 13 Model 2290 10 reverse biased diode connections with SourceMeter 1...

Страница 45: ...tage cable 2 Model 2290 10 SHVBH high voltage male bulkhead connector 3 Test fixture protective earth safety ground 4 Interlocked metal safety enclosure A safety enclosure with an interlock that has a...

Страница 46: ...s of the 2290 ki2290 write RST ki2290 write CLS ki2290 write RCL 0 Configure the 263xB as an ammeter set the current limit and current measurement range ki263x write smua source rangev 0 2 ki263x writ...

Страница 47: ...r 2013 currRdgList append currReading voltage voltage 300 Set the voltage of the 2290 to 0V and turn off its output ki2290 write VSET 0 ki2290 write HVOF Turn off the output of the Model 263xB ki263x...

Страница 48: ...are intended to be used by qualified service personnel only Many of these procedures may expose you to hazardous voltages that could result in personal injury or death Do not perform these procedures...

Страница 49: ...1 W Any appropriate resistor manufacturer 1 M load resistor 10 kV 25 W Verification procedures The verification procedures are explained in detail in the following paragraphs Refer to the Recommended...

Страница 50: ...e accuracy tests 2 Turn on the power and set the Model 2290 10 to its default conditions Press RCL 0 and then ENTER 3 Select the multimeter DCV function and enable autoranging 4 With the high voltage...

Страница 51: ...res the accuracy of the output current limit and the A current display 1 Using the ohms function of the multimeter measure and record the value of the 990 resistor 2 With the power off connect the 990...

Страница 52: ...the front panel A display reading is within 2 A of the actual current value 9 Repeat steps 6 through 8 for the remaining currents listed in the next table For each value Program the current limit to...

Страница 53: ...er entry module and that the front panel power switch is on Repeated trips Voltage Trips This problem may occur if the load changes too rapidly causing the voltage to overshoot Try raising the voltage...

Страница 54: ...le turning the power back on Doing so causes the unit to initialize the memory and load the default setup No high voltage If the Model 2290 10 does not enable the high voltage check to make sure that...

Страница 55: ...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 2...

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