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Tektronix Keithley SourceMeter 2410, Руководство по обслуживанию

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Display board 

U902  is  the  display  microcontroller  that  controls  the  VFD  (vacuum  fluorescent  display) 

and interprets key data. The microcontroller has four peripheral I/O ports that are used for the 
various control and read functions.

Display data is serially transmitted to the microcontroller from the digital board via the TXB 

line to the microcontroller PD0 terminal. In a similar manner, key data is serially sent back to 
the digital board through the RXB line via PD1. The 4MHz clock for the microcontroller is 
generated on the display board.

DS901 is the VFD (vacuum fluorescent display) module, which can display up to 49 

characters. Each character is organized as a 5 

×

 7 matrix of dots or pixels and includes a long 

underbar segment to act as a cursor.

The display uses a common multiplexing scheme with each character refreshed in sequence. 

U903 and U904 are the grid drivers, and U901 and U905 are the dot drivers. Note that dot driver 
and grid driver data is serially transmitted from the microcontroller (PD3 and PC1).

The VFD requires both +60VDC and 5VAC for the filaments. These VFD voltages are sup-

plied by U625, which is located on the digital board.

The front panel keys (S901-S931) are organized into a row-column matrix to minimize the 

number of microcontroller peripheral lines required to read the keyboard. A key is read by 
strobing the columns and reading all rows for each strobed column. Key down data is 
interpreted by the display microcontroller and sent back to the main microprocessor using 
proprietary encoding schemes.

4-12

Troubleshooting

2410-902-01.book  Page 12  Monday, November 7, 2005  2:49 PM

Содержание Keithley SourceMeter 2410

Страница 1: ...2410 902 01C P2410 902 01C www tek com keithley Service Manual 2410 902 01C April 2017 Model 2410 1100 V SourceMeter Instrument ...

Страница 2: ...1100V SourceMeter Service Manual Keithley Instruments Inc All rights reserved Cleveland Ohio U S A Third Printing April 2017 Document Number 2410 902 01 Rev C 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 3: ...ated all Addenda associated with the previous Revi sion of the manual are incorporated into the new Revision of the manual Each new Revision includes a revised copy of this print history page Revision A Document Number 2410 902 01 February 1997 Addendum A Document Number 2410 902 02 April 1997 Revision B Document Number 2410 902 01 July 1998 Revision C Document Number 2410 902 01 April 2017 All Ke...

Страница 4: ... voltage sources with high transient over voltages Measurement Category II connections require protection for high transient over voltages often as sociated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category I sources unless otherwise marked or described in the Manual Exercise extreme caution when a shock hazard is present Lethal ...

Страница 5: ...es a connection terminal to the equipment frame The WARNING heading in a manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the war ranty Instrumentation and accessories shall ...

Страница 6: ...surement accuracy 1 17 2 Calibration Introduction 2 2 Environmental conditions 2 3 Calibration considerations 2 4 Front panel calibration 2 9 Remote calibration 2 16 Single range calibration 2 24 3 Routine Maintenance Introduction 3 2 Line fuse replacement 3 2 4 Troubleshooting Introduction 4 2 Repair considerations 4 2 Power on self test 4 2 Front panel tests 4 3 Principles of operation 4 5 Troub...

Страница 7: ...Ordering information 6 2 Factory service 6 3 Component layouts 6 3 A Specifications Accuracy calculations A 2 B Command Reference Introduction B 2 Command summary B 2 Miscellaneous commands B 3 Detecting calibration errors B 11 Detecting calibration step completion B 13 C Calibration Programs Introduction C 2 Computer hardware requirements C 2 Software requirements C 2 Calibration equipment C 3 Ge...

Страница 8: ...ication 1 18 2 Calibration Voltage calibration test connections 2 11 Current calibration test connections 2 13 3 Routine Maintenance Rear panel 3 3 4 Troubleshooting Overall block diagram 4 5 Analog circuitry block diagram 4 7 Power supply block diagram 4 8 Output stage simplified schematic 4 9 Digital circuitry block diagram 4 11 2410 902 01 book Page 3 Monday November 7 2005 2 49 PM ...

Страница 9: ...2 16 Recommended CALibration PROTected SENSe 2 17 parameter ranges Recommended CALibration PROTected SOURce 2 18 parameter ranges Voltage calibration initialization commands 2 20 Voltage range calibration commands 2 20 Current calibration initialization commands 2 22 Current range calibration commands 2 22 3 Routine Maintenance Power line fuse 3 2 4 Troubleshooting Display board checks 4 13 Power ...

Страница 10: ...libration command summary B 2 Recommended CALibration PROTected SENSe B 7 parameter ranges Recommended CALibration PROTected SOURce B 9 parameter ranges Calibration errors B 12 2410 902 01 book Page 5 Monday November 7 2005 2 49 PM ...

Страница 11: ...1 Performance Verification 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 12: ...ibration to make sure it was performed properly WARNING The information in this section is intended for qualified service personnel NOTE only Do not attempt these procedures unless you are qualified to do so Some of these procedures may expose you to hazardous voltages which could cause personal injury or death if contacted Use standard safety precautions when working with hazardous voltages If th...

Страница 13: ...rm up period Allow the Model 2410 to warm up for at least one hour before conducting the verification procedures If the instrument has been subjected to temperature extremes those outside the ranges stated above allow additional time for the instrument s internal temperature to stabilize Typically allow one extra hour to stabilize a unit that is 10 C outside the specified temperature range Also al...

Страница 14: ...est equipment shown in parentheses Table 1 1 Recommended verification equipment Description Manufacturer Model Accuracy Digital multimeter Hewlett Packard HP3458A DC voltage DC current 1V 10V 100V 1000V 1µA 10μA 100μA 1mA 100mA 1A 5 6ppm 4 3ppm 6 3ppm 6 1ppm 55ppm 25ppm 23ppm 20ppm 35ppm 110ppm Resistance calibrator Fluke 5450A Resistance 19Ω 190Ω 1 9kΩ 19kΩ 190kΩ 1 9MΩ 19MΩ 100MΩ 23ppm 340ppm 10 ...

Страница 15: ...V 20V 0 02 2 4mV Output limits 20V 0 004 0 0024 Output limits 20V 0 0064V Output limits 19 9936V to 20 0064V Resistance limits calculation When verifying the ohms function it will probably be necessary to recalculate resistance limits based on the actual calibrator resistance values You can calculate resistance reading limits in the same manner described above Be sure to use the actual calibrator ...

Страница 16: ...Y 3 Select GLOBAL and then press ENTER The unit then displays GLOBAL SETUP MENU SAVE RESTORE POWERON RESET 4 Select RESET and then press ENTER The unit displays RESET ORIGINAL DFLTS BENCH GPIB 5 Select BENCH and then press ENTER The unit then displays RESETTING INSTRUMENT ENTER to confirm EXIT to abort 6 Press ENTER to restore bench defaults and note the unit displays the following RESET COMPLETE ...

Страница 17: ...LS key Make sure the Model 2410 is set to the correct source range Be sure the Model 2410 output is turned on before making measurements Be sure the test equipment is set up for the proper function and range Allow the Model 2410 output signal to settle before making a measurement Do not connect test equipment to the Model 2410 through a scanner multiplexer or other switching equipment WARNING The ...

Страница 18: ...se the 20V source range to output a 20V source value With a 20V source value and the 20V range selected the source field display will appear as follows Vsrc 20 0000 V 4 With the source field cursor flashing set the source output to the required value using either The SOURCE adjustment and left and right arrow keys The numeric keys 5 Note that the source output value will be updated immediately You...

Страница 19: ...ance can occur when the compliance setting is higher than the possible reading of the selected measurement range When in compliance the source output clamps at the maximum measurement range reading not the compliance value For example if the compliance voltage is set to 1V and the measurement range is 200mV the output voltage will clamp limit at 210mV Determining compliance limit The relationships...

Страница 20: ... verification tests the SourceMeter can be taken out of compliance by going into the edit mode and increasing the compliance limit NOTE Do not take the unit out of compliance by decreasing the source value or changing the range Always use the recommended range and source settings when performing the verification tests 2410 902 01 book Page 10 Monday November 7 2005 2 49 PM ...

Страница 21: ... source voltage and make sure the source out put is turned on 5 Verify output voltage accuracy for each of the voltages listed in Table 1 2 For each test point Select the correct source range Set the Model 2410 output voltage to the indicated value Verify that the multimeter reading is within the limits given in the table 6 Repeat the procedure for negative output voltages with the same magnitude ...

Страница 22: ...ER RANGE INPUT OUTPUT SENSE Ω 4 WIRE DISPLAY ON OFF TERMINALS FRONT REAR AUTO RANGE EXIT ENTER CONFIG MENU SWEEP TRIG REL LOCAL FILTER LIMIT DIGITS SPEED V Ω MEAS I FCTN V I SOURCE 2 3 0 1 6 7 8 9 4 5 STORE RECALL EDIT 4 WIRE SENSE 2410 1100V SourceMeter Figure 1 1 Connections for voltage verification tests 2410 902 01 book Page 12 Monday November 7 2005 2 49 PM ...

Страница 23: ...elect the correct source range Set the Model 2410 output voltage to the indicated value as measured by the digital multimeter Verify that the Model 2410 voltage reading is within the limits given in the table NOTE It may not be possible to set the voltage source to the specified value Use the closest possible setting and modify reading limits accordingly 6 Repeat the procedure for negative source ...

Страница 24: ... Select the correct source range Set the Model 2410 output current to the correct value Verify that the multimeter reading is within the limits given in the table 5 Repeat the procedure for negative output currents with the same magnitudes as those listed in Table 1 4 6 Repeat the entire procedure using the rear panel INPUT OUTPUT jacks Be sure to select the rear panel jacks with the front panel T...

Страница 25: ... 5V PEAK HI LO OUTPUT 1100V PEAK 1100V PEAK EDIT TOGGLE POWER RANGE INPUT OUTPUT SENSE Ω 4 WIRE DISPLAY ON OFF TERMINALS FRONT REAR AUTO RANGE EXIT ENTER CONFIG MENU SWEEP TRIG REL LOCAL FILTER LIMIT DIGITS SPEED V Ω MEAS I FCTN V I SOURCE 2 3 0 1 6 7 8 9 4 5 STORE RECALL EDIT 2410 1100V SourceMeter 2410 902 01 book Page 15 Monday November 7 2005 2 49 PM ...

Страница 26: ...s within the limits given in the table NOTE It may not be possible to set the current source to the specified value Use the closest possible setting and modify reading limits accordingly 5 Repeat the procedure for negative calibrator currents with the same magnitudes as those listed in Table 1 5 6 Repeat the entire procedure using the rear panel INPUT OUTPUT jacks Be sure to select the rear panel ...

Страница 27: ...and then press ENTER The following will be displayed SENSE MODE 2 WIRE 4 WIRE Select 4 WIRE and then press ENTER Press EXIT to return to normal display 4 Press MEAS Ω to select the ohms measurement function and make sure the source out put is turned on 5 Verify ohms measurement accuracy for each of the resistance values listed in Table 1 6 For each measurement Set the resistance calibrator output ...

Страница 28: ...ts earlier in this section for details Figure 1 3 Connections for resistance accuracy verification Model 2400 Resistance Calibrator 2400 SourceMeter RANGE 250V PEAK 5V PEAK HI LO OUTPUT 250V PEAK 250V PEAK EDIT TOGGLE POWER RANGE INPUT OUTPUT SENSE Ω 4 WIRE DISPLAY ON OFF TERMINALS FRONT REAR EXIT ENTER DIGITS RATE REL FILTER REL LOCAL FILTER LIMIT DIGITS SPEED V Ω MEAS I FCTN V I SOURCE 2 3 0 1 6...

Страница 29: ...2 Calibration 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 30: ...m the front panel or by sending SCPI calibration commands over the IEEE 488 bus or RS 232 port with the aid of a computer WARNING The information in this section is intended for qualified service personnel only Do not attempt these procedures unless you are qualified to do so Some of these procedures may expose you to hazardous voltages 2 2 Calibration 2410 902 01 book Page 2 Monday November 7 200...

Страница 31: ... extremes those outside the ranges stated above allow additional time for the instrument s internal temperature to stabilize Typically allow one extra hour to stabilize a unit that is 10 C 18 F outside the specified temperature range Also allow the test equipment to warm up for the minimum time specified by the manufacturer Line power The Model 2410 requires a line voltage of 100 to 240V at line f...

Страница 32: ...ding this value may cause a breakdown in in sulation creating a shock hazard CAUTION The maximum voltage between INPUT OUTPUT HI and LO or 4 WIRE SENSE HI and LO is 1100V peak The maximum voltage between INPUT OUTPUT HI and 4 WIRE SENSE HI or between INPUT OUTPUT LO and 4 WIRE SENSE LO is 5V Exceeding these voltage values may result in instrument damage Calibration cycle Perform calibration at lea...

Страница 33: ...nel 1 Press the MENU key then choose CAL and press ENTER The instrument will display the following CALIBRATION UNLOCK EXECUTE VIEW DATES SAVE LOCK CHANGE PASSWORD 2 Select UNLOCK and then press ENTER The instrument will display the following PASSWORD Use ENTER or EXIT 3 Use the up and down RANGE keys to select the letter or number and use the left and right arrow keys to choose the position Press ...

Страница 34: ...NS VOLT RANG and SOUR CURR RANG SENS CURR RANG Table 2 2 Calibration unlocked states Mode State Equivalent remote command Concurrent Functions Sense Function Sense Volts NPLC Sense Volts Range Sense Current NPLC Sense Current Range Filter Count Filter Control Filter Averaging Source V Mode Volts Autorange Source I Mode Current Autorange Autozero Trigger Arm Count Trigger Arm Source Trigger Count T...

Страница 35: ...en press ENTER The instrument will display the following New Pwd 002410 Use ENTER or EXIT 4 Using the range keys and the left and right arrow keys enter the new password on the display 5 Once the desired password is displayed press the ENTER key to store the new password Changing the password by remote To change the calibration password by remote first send the present password and then send the n...

Страница 36: ...el 2410 will display the next and last calibration dates and the calibration count as in the following example NEXT CAL 12 15 97 Last calibration 12 15 96 Count 0001 Calibration errors The Model 2410 checks for errors after each calibration step minimizing the possibility that improper calibration may occur due to operator error Front panel error reporting If an error is detected during comprehens...

Страница 37: ...ized in Table 2 2 Step2 Voltage calibration Perform the steps below for each voltage range using Table 2 3 as a guide 1 Connect the Model 2410 to the digital multimeter as shown in Figure 2 1 Select the multimeter DC volts measurement function NOTE The 2 wire connections shown assume that remote sensing is not used Remote sensing may be used if desired but it is not essential when using the recomm...

Страница 38: ...ing DMM RDG 200 0000mV Use ENTER or EXIT 14 Note and record the DMM reading and then adjust the Model 2410 display to agree with the DMM reading Again the maximum display adjustment is within 10 of the present range 15 After adjusting the display value to agree with the DMM reading press ENTER and note that the instrument displays V CAL Press ENTER to Output 000 00mV 16 Press ENTER The Model 2410 ...

Страница 39: ... _____________V _____________V Use EDIT and RANGE keys to select source range Multimeter reading used in corresponding calibration step See procedure Model 2410 Digital Multimeter Input HI Input LO 2410 SourceMeter 250V PEAK 5V PEAK HI LO OUTPUT 1100V PEAK 1100V PEAK EDIT TOGGLE POWER RANGE INPUT OUTPUT SENSE Ω 4 WIRE DISPLAY ON OFF TERMINALS FRONT REAR AUTO RANGE EXIT ENTER CONFIG MENU SWEEP TRIG...

Страница 40: ...y to agree exactly with the actual DMM reading Use the up and down arrow keys to select the digit value and use the left and right arrow keys to choose the digit position or use the number keys 0 9 Note that the display adjustment range is within 10 of the present range 9 After adjusting the display to agree with the DMM reading press ENTER The instrument will then display the following I CAL Pres...

Страница 41: ...nt range 19 Press EXIT to return to normal display and then select the 10µA source range using the EDIT and up RANGE keys Repeat steps 2 through 18 for the 10µA range 20 After calibrating the 10µA range repeat the entire procedure for the 100µA through 1A ranges using Table 2 4 as a guide Be sure to select the appropriate source range with the EDIT and up RANGE keys before calibrating each range M...

Страница 42: ...____ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ____________ µA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA ___________ mA _____________ A _____________ A _____________ A ____...

Страница 43: ...R or EXIT 7 Set the calibration due date to the desired value and then press ENTER Press ENTER again to confirm the date 8 Once the calibration dates are entered calibration is complete and the following message will be displayed CALIBRATION COMPLETE Press ENTER to confirm EXIT to abort 9 Press ENTER to save the calibration data or press EXIT to abort without saving calibration data The following ...

Страница 44: ...ed will not be saved Table 2 5 Remote calibration command summary Command Description CALibration PROTected CODE password COUNT SAVE LOCK LOCK DATE y m d DATE NDUE y m d NDUE SENSe nrf DATA SOURce nrf DATA Calibration subsystem Cal commands protected by password Unlock cal changes password if cal is already unlocked Default password KI002410 Query number of times 2410 has been calibrated Save cali...

Страница 45: ...urce range requires four parameters two zero parameters a positive full scale parameter and a negative full scale parameter Table 2 6 Recommended CALibration PROTected SENSe parameter ranges Sense range First parameter zero Second parameter negative full scale Third parameter positive full scale 0 2V 2V 20V 1000V 1µA 10µA 100µA 1mA 20mA 100mA 1A 0 002 to 0 002 0 02 to 0 02 0 2 to 0 2 2 to 2 1E 8 t...

Страница 46: ...ull scale Fourth parameter positive zero 0 2V 2V 20V 1000V 1µA 10µA 100µA 1mA 20mA 100mA 1A 0 18 to 0 22 1 8 to 2 2 18 to 22 800 to 1200 0 9E 6 to 1 1E 6 9E 6 to 11E 6 90E 6 to 110E 6 0 9E 3 to 1 1E 3 18E 3 to 22E 3 90E 3 to 110E 3 0 9 to 1 1 0 002 to 0 002 0 02 to 0 02 0 2 to 0 2 2 to 2 1E 8 to 1E 8 1E 7 to 1E 7 1E 6 to 1E 6 1E 5 to 1E 5 1E 4 to 1E 4 1E 3 to 1E 3 1E 2 to 1E 2 0 18 to 0 22 1 8 to ...

Страница 47: ... the parameter for the CAL PROT SOUR and CAL PROT SENS commands For example a typical value for the 2V range would be CAL PROT SOUR 1 998 CAL PROT SENS 1 998 Program the voltage source for 0V output using the SOUR VOLT 0 0 command Note the multimeter reading Send the source and sense calibration commands using the multimeter reading for the parameter For example CAL PROT SOUR 1E 3 CAL PROT SENS 1E...

Страница 48: ...2410 for errors CAL PROT SENS DMM_Reading Check 2410 for errors SOUR VOLT 0 0 Take DMM reading CAL PROT SOUR DMM_Reading Check 2410 for errors CAL PROT SENS DMM_Reading Check 2410 for errors SOUR VOLT Source_value Take DMM reading CAL PROT SOUR DMM_Reading Check 2410 for errors CAL PROT SENS DMM_Reading Check 2410 for errors SOUR VOLT 0 0 Take DMM reading CAL PROT SOUR DMM_Reading Select source ra...

Страница 49: ...example a typical value for the 1mA range would be CAL PROT SOUR 1 025E 3 CAL PROT SENS 1 025E 3 Program the current source for 0A output using the SOUR CURR 0 0 command Note the multimeter reading Send the source and sense calibration commands using the multimeter reading for the parameter For example CAL PROT SOUR 1E 6 CAL PROT SENS 1E 6 Set the source to the positive full range value using the ...

Страница 50: ... DMM_Reading Check 2410 for errors SOUR CURR 0 0 Take DMM reading CAL PROT SOUR DMM_Reading Check 2410 for errors CAL PROT SENS DMM_Reading Check 2410 for errors SOUR CURR Source_value Take DMM reading CAL PROT SOUR DMM_Reading Check 2410 for errors CAL PROT SENS DMM_Reading Check 2410 for errors SOUR CURR 0 0 Take DMM reading CAL PROT SOUR DMM_Reading Select source range Establish negative full r...

Страница 51: ...to 31 Step5 Save calibrationconstants Calibration is now complete so you can store the calibration constants in EEROM by sending the following command CAL PROT SAVE NOTE Calibration will be temporary unless you send the SAVE command Also calibration data will not be saved if 1 calibration is locked 2 invalid data exists or 3 all steps were not completed Step 6 Lock outcalibration To lock out furth...

Страница 52: ...may want to calibrate only certain ranges To do so complete the entire procedure only for the ranges to be calibrated Keep in mind however that you must complete all parameter steps for each source or sense range Also be sure to set calibration dates and save calibration after calibrating the desired ranges 2 24 Calibration 2410 902 01 book Page 24 Monday November 7 2005 2 49 PM ...

Страница 53: ...3 Routine Maintenance 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 54: ...lly grasp and squeeze together the locking tabs that secure the fuse carrier to the fuse holder 2 Pull out the fuse carrier and replace the fuse with the type specified in Table 3 1 CAUTION To prevent instrument damage use only the fuse type specified in Table 3 1 3 Re install the fuse carrier NOTE If the power line fuse continues to blow a circuit malfunction exists and must be corrected Refer to...

Страница 55: ...ADDRESS WITH FRONT PANEL MENU 250V PEAK 5V PEAK 5V PEAK 5V PK V Ω GUARD GUARD SENSE LINE FUSE SLOWBLOW 1A 250V INTERLOCK DIGITAL I O Fuse WARNING NO INTERNAL OPERATOR SERVICABLE PARTS SERVICE BY QUALIFIED PERSONNEL ONLY CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE WITH SAME TYPE AND RATING MADE IN U S A INPUT OUTPUT 250V PEAK 250V PEAK TRIGGER LINK 4 WIRE SENSE HI LO LINE RATI...

Страница 56: ...4 Troubleshooting 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 57: ...ctory for repairs or limit repairs to the PC board replacement level Without proper equipment and training you could damage a PC board beyond repair Repairs will require various degrees of disassembly However it is recommended that the Front Panel Tests be performed prior to any disassembly The disassembly instructions for the Model 2410 are contained in Section 5 of this manual Do not make repair...

Страница 58: ...RNS test The display patterns test lets you verify that each pixel and annunciator in the vacuum fluores cent display is working properly Perform the following steps to run the display patterns test 1 Display the MAIN MENU by pressing the MENU key 2 Select TEST and press ENTER to display the SELF TEST MENU 3 Select DISPLAY TESTS and press ENTER to display the following menu FRONT PANEL TESTS KEYS ...

Страница 59: ...s ENTER to display the following menu FRONT PANEL TESTS KEYS DISPLAY PATTERNS CHAR SET 4 Select CHAR SET and press ENTER to start the character set test Press any key except EXIT to cycle through all displayable characters 5 When finished abort the character set test by pressing EXIT The instrument returns to the FRONT PANEL TESTS MENU Continue pressing EXIT to back out of the menu structure 4 4 T...

Страница 60: ...l block diagram Figure 4 2 Analog circuitry block diagram Figure 4 3 Power supply block diagram Figure 4 4 Output stage simplified schematic Figure 4 5 Digital circuitry block diagram Overall block diagram Figure 4 1 shows an overall block diagram of the Model 2410 Circuitry is divided into three general areas Analog circuits includes circuits such as the DACs clamps output stage and feedback circ...

Страница 61: ...he error amplifier adds open loop gain and slew rate control to the system to assure accu racy and provide a controllable signal for the output stage which provides the necessary voltage and current gain to drive the output Sense resistors in the HI output lead provide output current sensing and a separate sense resistor is used for each current range The 1A range uses 0 2V full scale for a full r...

Страница 62: ...e Sense Resistors FB VFB IFB VFB IFB MUX 7 S A D 1200 42 42 1200 Output HI S O Output LO S O Remote Protection Protection Guard Out Guard Sense Figure 4 2 Analog circuitry block diagram Troubleshooting 4 7 2410 902 01 book Page 7 Monday November 7 2005 2 49 PM ...

Страница 63: ... power for the instrument while providing universal inputs for the 110 120V line The digital board runs directly from the switcher including the 12VD supply to program the flash ROM A constant frequency switching supply runs off the 12VD supplies and generates all the floating supply voltages for the analog board 5V 15V and 70VF An AC output low voltage supplies the analog board with the power it ...

Страница 64: ...puts are provided to reduce power dissipation on the 20V and lower ranges Output transistors Q518 and Q521 are cascoded with output MOSFETs Q516 and Q523 All other MOSFETs and transistors are slaves and the voltages across these devices are determined by the resistor capacitor ladder circuits shown Coarse current limits are built into the output stage Figure 4 4 Output stage simplified schematic T...

Страница 65: ...ire ohms circuit used to measure complex devices This circuitry provides a low current 50mA equivalent of the voltage on output HI If the unit is in the SV mode the low current equivalent of the source voltage will appear on the guard terminal If the unit is in the SI mode the voltage on output HI is equal to the source current multiplied by the external resistance value An equivalent voltage will...

Страница 66: ...etups 1 through 4 are stored in battery backed up RAM External communication is provided via GPIB and serial interfaces A 9914 GPIA IEEE 488 standard interface IC is used for the GPIB and a 68332 Queued Serial Module QSM provides the serial UART For internal communications the Time Processing Unit TPU is used for serial communications with the front panel display module and both the TPU and QSM ha...

Страница 67: ...udes a long underbar segment to act as a cursor The display uses a common multiplexing scheme with each character refreshed in sequence U903 and U904 are the grid drivers and U901 and U905 are the dot drivers Note that dot driver and grid driver data is serially transmitted from the microcontroller PD3 and PC1 The VFD requires both 60VDC and 5VAC for the filaments These VFD voltages are sup plied ...

Страница 68: ...s Step Item component Required condition Remarks 1 2 3 4 5 6 7 Front panel test P1005 pin 5 P1005 pin 9 U902 pin 1 U902 pin 43 U902 pin 32 U902 pin 33 Verify that all segments operate 5V 5 37V 5 Goes low briefly on power up then goes high 4MHz square wave Pulse train every 1ms Brief pulse train when front panel key is pressed Use front panel display test Digital 5V supply Display 37V supply Microc...

Страница 69: ...athode CR505 anode TP506 TP507 TP508 TP509 TP510 Check continuity Plugged into live receptacle power on 1200V 10 1200V 10 42V 10 42V 10 70V 10 15V 5 15V 10 70V 10 5V 5 Remove to check Check for correct power up sequence Referenced to TP501 Referenced to TP501 Referenced to TP501 Referenced to TP501 70VF referenced to TP500 15VF referenced to TP500 15VF referenced to TP500 70VF referenced to TP500 ...

Страница 70: ...ROM OK Digital common 5V Low on power up then goes high Check for stuck bits Check for stuck bits 16 78MHz Pulse train during RS 232 I O Pulse train during RS 232 I O Pulse train during IEEE 488 I O Pulses during IEEE 488 I O Low with remote enabled Low during interface clear Pulse train Pulse train Pulse train Pulse train Verify that RAM and ROM are functional All signals referenced to digital co...

Страница 71: ...Item component Required condition Remarks 1 2 3 4 5 6 7 8 9 TP200 TP201 TP202 TP203 TP213 TP218 TP219 TP214 TP232 1100V voltage protection SOURCE 10V SOURCE 10V SVMI SOURCE 10V SOURCE 10V OUTPUT COM OUTPUT COM SVMI OUTPUT ON 20V Bench defaults 13V 1V 5V 5V 10V 1V 10 5V 1V 0V 1V 7V 7V 7V 7V 20V 5V 6 4V 6V 4 16 Troubleshooting 2410 902 01 book Page 16 Monday November 7 2005 2 49 PM ...

Страница 72: ...d user defined parameters will be lost when the battery is replaced The Model 2410 must be re calibrated Section 2 after the battery is replaced WARNING The precautions below must be followed to avoid personal injury 1 Wear safety glasses or goggles when working with lithium batteries 2 Do not short the battery terminals together 3 Keep lithium batteries away from all liquids 4 Do not attempt to r...

Страница 73: ...ed in Section 5 3 Remove the analog board assembly as outlined in Section 5 4 Locate the two firmware ROMs U15 and U16 located on the digital board These are the only ICs installed in sockets Refer to the component layout drawing at the end of Section 6 for exact locations 5 Carefully push down on each ROM IC to make sure it is properly seated in its socket CAUTION Be careful not to push down exce...

Страница 74: ...5 Disassembly 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 75: ...d shields Do not touch any board traces or components not associated with repair Do not touch areas adjacent to electrical contacts Use dry nitrogen gas to clean dust off PC boards Solder repairs Observe the following precautions when you must solder a circuit board Use an OA based organic activated flux and take care not to spread the flux to other areas of the circuit board Remove the flux from ...

Страница 76: ...arts in anti static containers made of plastic or foam Keep these devices in their original containers until ready for installation Remove the devices from their protective containers only at a properly grounded work station Also ground yourself with a suitable wrist strap Handle the devices only by the body do not touch the pins Ground any printed circuit board into which a semiconductor device i...

Страница 77: ...fer to these drawings for information about the Keithley part numbers of most mechanical parts in the unit Front panel assembly 2410 040 Analog board heat sink shield assembly 2410 050 Chassis assembly 2410 051 Chassis analog board assembly 2410 052 Final chassis assembly 2410 053 5 4 Disassembly 2410 902 01 book Page 4 Monday November 7 2005 2 49 PM ...

Страница 78: ... mounting ears Remove the screw that secures each mounting ear Pull down and out on each mounting ear NOTE When re installing the mounting ears make sure to mount the right ear to the right side of the chassis and the left ear to the left side of the chassis Each ear is marked RIGHT or LEFT on its inside surface 3 Remove rear bezel To remove the rear bezel loosen the two screws that secure the rea...

Страница 79: ...heat sink Remove the two screws that secure the heat sink to the chassis 4 Remove analog board assembly After all screws have been removed carefully lift the analog board assembly free of the main chassis 5 Disassemble analog board assembly Remove the screws that secure the analog board and heat sink to the analog board subchassis Carefully remove the heat sink by sliding the clips off the power t...

Страница 80: ...n the notch on the pushrod Gently twist the screwdriver while pulling the rod from the shaft 3 Unplug cables Unplug the display board ribbon cables Unplug the cables going to the power supply Unplug the rear panel power module cable 4 Remove digital board Slide the digital board forward until it is free of the guide pins then remove the board During re assembly replace the board and start the IEEE...

Страница 81: ... are located on each side of the front panel Pull the retaining clips outward and at the same time pull the front panel assembly forward until it separates from the chassis 3 Using a thin bladed screw driver pry the plastic PC board stop located at the bottom of the display board until the bar separates from the casing Pull the display board from the front panel 4 Remove the switch pad by pulling ...

Страница 82: ...ps to remove the rear panel power module 1 Remove the analog board 2 Unplug the cable connecting the power module to the digital board 3 Disconnect the power module s ground wire This green and yellow wire connects to a threaded stud on the chassis with a kep nut 4 Squeeze the latches on either side of the power module while pushing the module from the access hole WARNING To avoid electrical shock...

Страница 83: ...e properly made WARNING To ensure continued protection against electrical shock verify that power line ground green and yellow wire attached to the power module is connected to the chassis Also make certain that the two bottom case screws are properly installed to secure and ground the case cover to the chassis 5 10 Disassembly 2410 902 01 book Page 10 Monday November 7 2005 2 49 PM ...

Страница 84: ...6 Replaceable Parts 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 85: ... and the assembly drawings provided at the end of Section 5 Ordering information To place an order or to obtain information concerning replacement parts contact your Keithley representative or the factory see inside front cover for addresses When ordering parts be sure to include the following information Instrument model number Model 2410 Instrument serial number Part description Component design...

Страница 86: ...k of this manual and include it with the instrument Carefully pack the instrument in the original packing carton Write ATTENTION REPAIR DEPARTMENT and the RMA number on the shipping label Component layouts The component layouts for the various circuit boards are provided on the following pages Analog board 2410 100 Display board 2400 110 Digital board 2400 140 Replaceable Parts 6 3 2410 902 01 boo...

Страница 87: ...CERAMIC C 451 100P C296 CAP 33PF 10 1000V CERAMIC C 64 33P C301 302 CAP 1000PF 10 50V MONO CERAMIC C 452 1000P C311 CAP 100UF 20 10V ALUM ELEC C 483 100 C312 319 CAP 10PF 5 100V CERAMIC C 372 10P C323 326 603 604 615 CAP 47P 5 100V CERAMIC C 465 47P C329 CAP 220PF 10 100V CERAMIC C 451 220P C331 334 CAP 100PF 5 100V CERAMIC C 465 100P C336 CAP 1000PF 10 1000V CERAMIC C 64 1000P C342 CAP 4 7PF 5 50...

Страница 88: ...600 DIODE DUAL HSM 2822T31 RF 95 CR601 524 DIODE SCHOTTKY SD103C RF 113 J1001 CONN HEADER STRAIGHT SOLDER PIN CS 368 10 J1002 CONN HEADER STRAIGHT SOLDER PIN CS 368 16 J1003 CONNECTOR HEADER STRAIGHT SOLDER PIN CS 368 14 J1034 LATCHING HEADER FRICTON SGL ROW CS 724 3 J1035 CONN BERG CS 339 K200 201 202 203 204 RELAY SMT K205 N C RELAY 1 FORMB AQV214S RL 176 K206 RELAY REED HI VOLT ISOLA TION 848 1...

Страница 89: ...601 228 TRANS PNP MMBT3906L TG 244 262 263 Q507 TRANS PMP MJE5731A TG 315 Q514 516 500 502 230 TRANS NCHANNEL PWR FET MTPIN100 TG 222 231 Q515 517 519 532 600 TRANS NPN MMBT3904 TG 238 Q518 TRANS NPN DARLINGTON TIP101 TG 230 Q521 TRANS PNP DARLINGTON TIP106 TG 231 Q523 531 525 509 533 TRANS P CHANNEL FET MTP2P50 TG 208 511 Q526 527 TRANS N CHANNEL MOSFET SI9410DY TG 302 Q528 265 TRANS NPN SILICON ...

Страница 90: ...71 209 RES 1M 1 100MW THICK FILM R 418 1M R272 273 RES 249K 1 100MW THICK FILM R 418 249K R280 439 440 RES 4 02K 1 100MW THICK FILM R 418 4 02K R283 287 297 299 350 RES 30 1K 1 100MW THICK FILM R 418 30 1K R289 291 RES 45 3K 1 100MW THICK FILM R 418 45 3K R293 RES 243K 1 125MW METAL FILM R 391 243K R298 300 RES 150K 1 100MW THICK FILM R 418 150K R302 RES 0499 1 100MW THICK FILM R 418 0499 R303 RES...

Страница 91: ...63 221K R452 RES 20K 5 1 8W METAL FILM R 351 20K R453 RES 1 8K 1 1 10W METAL FILM R 263 1 8K R454 455 RES 49 9 1 1 10W METAL FILM R 263 49 9 R467 471 RES 100 1 1 10W METAL FILM R 263 100 R472 478 466 355 290 344 309 RES 1K 1 100MW THICK FILM R 418 1K R473 RES 30 1K 1 100MW THICK FILM R 418 30 1K R474 477 RES 2 1 1W R 441 2 R479 501 529 530 RES 249 1 100MW THICK FILM R 418 249 534 563 R485 525 526 ...

Страница 92: ...R611 621 RES 475 1 100MW THICK FILM R 418 475 R612 RES 5 11K 1 100MW THICK FILM R 418 5 11K R613 624 659 660 RES 100 1 100MW THICK FILM R 418 100 518 519 R614 615 208 553 554 RES 2 21K 1 100MW THICK FILM R 418 2 21K R618 RES 34K 1 100MW THICK FILM R 418 34K R619 RES 4 75K 1 100MW THICK FILM R 418 4 75K R620 RES 82 5 1 100MW THICK FILM R 418 82 5 R623 154 155 RES 10 10 100MW THICK FILM R 418 10 R65...

Страница 93: ...C 949 U265 IC PHOTO TRANS TLP626BV LFI IC 1006 U408 218 216 225 ICM DUAL J FET OP AMP OP 282GS IC 968 U500 IC OP AMP AD847JN IC 890 U501 IC VOLT COMPARATOR LM393D IC 775 U502 PROGRAMMABLE TEMP CONTROLLER IC 1062 U600 264 206 207 IC DUAL PICOAMP OP AMP AD706JR IC 910 208 233 U601 IC QUAD D FLIP FLOP W CLK RESET 74HC175 IC 923 U604 IC NCHAN LAT DMOS QUADFET SD5400CY IC 893 U605 INTEGRATED CIRCUIT OP...

Страница 94: ...01 DIODE ZENER 6 0V BZX84B6V2 DZ 87 VR502 503 DIODE ZENER 12V MMSZ12T1 DZ 112 VR507 DIODE ZENER 22V BZX84C22 DZ 86 VR508 509 DIODE ZENER 9 1V IN4739A DZ 56 VR600 DIODE ZENER 6 4V IN4579 DZ 73 VR602 603 DIODE ZENER 6 2V MMSZ6V2 DZ 97 Y600 OSCILLATOR HIGH SPEED CMOS 12MHZ CR 37 Table 6 1 cont Analog board parts list Circuit designation Description Keithley part no Replaceable Parts 6 11 2410 902 01 ...

Страница 95: ... 20 25V TANTALUM C 440 10 C65 CAP 022UF 10 50V CERAMIC C 491 022 C72 86 CAP 1UF 20 50V CERAMIC C 519 1 C74 75 CAP 470UF 20 25V ALUM ELEC C 413 470 C84 6 7 9 18 90 CAP 1UF 10 25V CERAMIC C 495 1 C87 88 CAP 01UF 10 50V CERAMIC C 491 01 C96 100 103 105 CAP 1UF 20 50V CERAMIC C 418 1 C106 107 CAP 1UF 20 100V CERAMIC C 487 1 CR1 4 ULTRAFAST POWER RECTIFIER RF 107 CR6 9 12 20 ULTRAFAST POWER RECTIFIER R...

Страница 96: ...1 100MW THICK FILM R 418 11K R40 32 27 24 RES 5 1K 5 125MW METAL FILM R 375 5 1K R43 44 45 65 RES 2 21K 1 100MW THICK FILM R 418 2 21K R51 RES 7 5K 1 125MW METAL FILM R 391 7 5K R53 54 RES 3 01K 1 100MW THICK FILM R 418 3 01K R55 RES 10M 1 125MW THICK FILM R 418 10M R56 RES 3 01K 1 100MW THICK FILM R 418 3 01K R57 RES 1M 1 100MW THICK FILM R 418 1M R73 74 76 78 81 83 7 69 71 85 89 RES 10K 1 100MW ...

Страница 97: ... U16 PROGRAMMED ROM 2400 804 U17 IC SERIAL EPROM 24LC16B LSI 153 U18 IC 5V VOLTAGE REGULATOR LM2940CT U19 IC SCHMITT TRIGGER NAND GATE IC 950 U20 IC OCTAL INTERFACE BUS 75160 IC 646 U21 IC DUAL POWER MOSFET DRIVER TSC426 IC 437 U23 25 IC POS NAND GATES INVERT 74HCT14 IC 656 U24 IC TRIPLE 3 IN NAND 74F10 IC 659 VR1 DIODE ZENER 33V IN4752A DZ 68 Y1 CRYSTAL FSM327 CR 41 Table 6 2 cont Digital board p...

Страница 98: ...ENT DISPLAY DD 51C J1032 CONN BERG J1033 CONN HEADER STRAIGHT SOLDER PIN CS 368 16 Q901 902 TRANS NPN GEN PURPOSE BC868 TG 293 R901 RES NET 15K 2 1 875W TF 219 15K R902 RES 13K 5 125MW METAL FILM R 375 13K R903 904 RES 4 7K 5 250MW METAL FILM R 376 4 7K R905 RES 1M 5 125MW METAL FILM R 375 1M R906 RES 1K 5 250MW METAL FILM R 376 1K R907 RES 240 5 250MW METAL FILM R 376 240 R908 RES 10M 5 125MW MET...

Страница 99: ...7B 1 DISPLAY LENS 2410 311B 2 FOOT EXTRUDED FE 22A 2 FOOT RUBBER FE 6 1 FUSE 2 5A 5 X 20MM FU 106 2 5 1 HANDLE 428 329F 1 HEAT SINK 2400 308E 2 HOLDER FERRITE 2001 367A 1 LED HIGH POWER PL 94 1 LENS LED 6517 309A 1 LINE CORD CO 7 1 LINE FILTER LF 11 1 MEMBRANE SWITCH FRONT PANEL 2410 313B 1 MOUNTING EAR LEFT 428 338B 1 MOUNTING EAR RIGHT 428 328E 1 POWER SUPPLY PS 41B 1 SWITCHPAD 2400 315A 1 TEST ...

Страница 100: ...A Specifications 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 101: ...om 9 9975 to 10 0025V Current measurement calculations are performed in exactly the same manner using the perti nent specifications ranges and input signal values Source accuracy Source accuracy is calculated similarly except of course that source specifications are used As an example of how to calculate the actual source output limits assume that you are sourcing 0 7mA on the 1mA source range You...

Страница 102: ...B Command Reference 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 103: ...mote calibration command summary Command Description CALibration PROTected CODE password COUNT SAVE LOCK LOCK DATE y m d DATE NDUE y m d NDUE SENSe nrf DATA SOURce nrf DATA Calibration subsystem Cal commands protected by password Unlock cal if cal is unlocked changes password Default password KI002410 Query number of times 2410 has been calibrated Save calibration data to EEPROM Lock calibration i...

Страница 104: ...command should be sent only once before performing calibration Do not send CODE before each calibration step To change the code first send the present code and then send the new code The password parameter must be enclosed in single quotes If you change the first two characters of the password to something other than KI you will not be able to unlock calibration from the front panel Example CAL PR...

Страница 105: ...fter the calibration procedure cal prot save The SAVE command stores internally calculated calibration constants derived during comprehensive in EEROM EEROM is non volatile memory and calibration constants will be retained indefinitely once saved Generally SAVE is sent after all other calibration steps except for LOCK Calibration will only be temporary unless the SAVE command is sent to permanentl...

Страница 106: ...mmas Example CAL PROT DATE 1996 11 20 Send cal date 11 20 96 NDUE CALibration PROTected NDUE Purpose To send the next calibration due date to the instrument Format cal prot ndue year month day Parameters year 1996 to 2095 month 1 to 12 day 1 to 31 Query cal prot ndue Response year month day Description The NDUE command allows you to store the date when calibration is next due in instrument memory ...

Страница 107: ...r does not fit into any of the three allowed ranges error number 222 Parameter data out of range will be generated Once the unit has successfully selected the appropriate parameter range it will then check to see if autorange for the active SENS FUNC is enabled If so error number 221 Settings conflict will be generated If no error occurs the active sense function range point will be calibrated usi...

Страница 108: ...ull scale 0 2V 2V 20V 1000V 0 002 to 0 002 0 02 to 0 02 0 2 to 0 2 2 to 2 0 18 to 0 22 1 8 to 2 2 18 to 22 800 to 1100 0 18 to 0 22 1 8 to 2 2 18 to 22 800 to 1100 1µA 10µA 100µA 1mA 20mA 100mA 1A 1E 8 to 1E 8 1E 7 to 1E 7 1E 6 to 1E 6 1E 5 to 1E 5 1E 4 to 1E 4 1E 3 to 1E 3 1E 2 to 1E 2 0 9E 6 to 1 1E 6 9E 6 to 11E 6 90E 6 to 110E 6 0 9E 3 to 1 1E 3 18E 3 to 22E 3 90E 3 to 110E 3 0 9 to 1 1 0 9E 6...

Страница 109: ...ctive source is programmed to a value within the selected parameter range and that OUTP STAT is ON If the active source is not programmed to a value within the parameter range or if the source is in autorange or in standby error number 221 Settings conflict will be generated If no error occurs the active source function range point will be calibrated using the corresponding parameter Note that par...

Страница 110: ...2 2 18 to 22 800 to 1100 0 002 to 0 002 0 02 to 0 02 0 2 to 0 2 2 to 2 0 18 to 0 22 1 8 to 2 2 18 to 22 800 to 1100 0 002 to 0 002 0 02 to 0 02 0 2 to 0 2 2 to 2 1µA 10µA 100µA 1mA 20mA 100mA 1A 0 9E 6 to 1 1E 6 9E 6 to 11E 6 90E 6 to 110E 6 0 9E 3 to 1 1E 3 18E 3 to 22E 3 90E 3 to 110E 3 0 9 to 1 1 1E 8 to 1E 8 1E 7 to 1E 7 1E 6 to 1E 6 1E 5 to 1E 5 1E 4 to 1E 4 1E 3 to 1E 3 1E 2 to 1E 2 0 9E 6 t...

Страница 111: ...alibration constants for the active range of the sense and source functions respectively The four returned constants are in ASCII floating point format delimited by commas Note To request the appropriate constants 1 select the source or sense function 2 choose the desired range and 3 send the desired DATA query Example SENS FUNC VOLT DC Select DC sense function SENS VOLT DC RANGE 0 2 Choose 200mV ...

Страница 112: ... defined numeric ranges Error 503 504 This error occurs when the source compliance DAC calibration con stants generate an invalid DAC setting All of the source compliance DAC calibration constants are verified each time a CAL PROT SOUR command is processed and when the Model 2410 is first turned on This error generally occurs when the Model 2410 source circuitry is defec tive Error 505 This error ...

Страница 113: ...bus SRQ Service Request when an error occurs send the SRE 4 command This command will enable SRQ when the EAV bit is set You can then read the status byte and error queue as outlined above to check for errors and to determine the exact nature of the error Table B 4 Calibration errors Error number Error message 500 501 502 503 504 505 506 507 508 Date of calibration not set Next date of calibration...

Страница 114: ...ibration step In order to use OPC to detect the end of each calibration step perform the following 1 Enable operation complete by sending ESE 1 This command sets the OPC operation complete bit in the standard event enable register allowing operation complete status from the standard event status register to set the ESB event summary bit in the status byte when operation complete is detected 2 Send...

Страница 115: ...to the instrument and then include the OPC command at the end of each calibration command line as previously described Clear the SRQ by querying the ESR using the ESR query to clear OPC status and then request the status byte with the STB query Refer to your controller s documentation for information on detecting and servicing SRQs B 14 Command Reference 2410 902 01 book Page 14 Monday November 7 ...

Страница 116: ...C Calibration Programs 2410 902 01 book Page 1 Monday November 7 2005 2 49 PM ...

Страница 117: ...alibration programs IBM PC compatible computer Keithley KPC 488 2 KPS 488 2 or KPC 488 2AT or CEC PC 488 IEEE 488 interface for the computer Two shielded IEEE 488 connecting cables Keithley Model 7007 Software requirements In order to use the calibration programs you will need the following computer software Microsoft QBasic supplied with MS DOS 5 0 or later MS DOS version 5 0 or later HP style Un...

Страница 118: ...timeter Allow the Model 2410 and the multimeter to warm up for at least one hour before performing calibration 3 Make sure the Model 2410 is set for a primary address of 24 Use the front panel MENU GPIB selection to check or change the address 4 Make sure the digital multimeter primary address is set to its factory default setting 22 5 Make sure the computer bus driver software CECHP EXE is proper...

Страница 119: ...DIG 7 TRIG LINE FUNC DCV AUTO CLS Clear CRT PRINT Model 2410 Calibration Program PRINT Connect DMM volts input to Model 2410 INPUT OUTPUT jacks GOSUB KeyCheck FOR J 1 TO 2 Select volts current cal IF J 1 THEN RESTORE VoltsInit Max 8 Range 2 Limit 1000 ELSE RESTORE CurrentInit Max 4 Range 000001 Limit 1 PRINT 1 OUTPUT 24 OUTP STAT OFF PRINT 1 OUTPUT 22 FUNC DCI AUTO PRINT Connect DMM current input ...

Страница 120: ...NDUE D PRINT 1 OUTPUT 24 CAL PROT SAVE Save calibration constants GOSUB ErrCheck PRINT 1 OUTPUT 24 CAL PROT LOCK Lock out calibration PRINT Calibration completed PRINT 1 OUTPUT 24 RST PRINT 1 LOCAL 22 24 CLOSE END KeyCheck Check for key press routine WHILE INKEY WEND Flush keyboard buffer PRINT PRINT Press any key to continue ESC to abort program DO I INKEY LOOP WHILE I IF I CHR 27 THEN GOTO EndPr...

Страница 121: ...OT 0 01 DATA SENS CURR RANG 0 01 SOUR VOLT PROT LEV MAX SYST RSEN OFF DATA CAL PROT CODE KI002410 OUTP STAT ON VoltsCal DATA SOUR VOLT RANG SOUR VOLT DATA CAL PROT SOUR CAL PROT SENS SOUR VOLT 0 0 DATA CAL PROT SOUR CAL PROT SENS SOUR VOLT CAL PROT SOUR DATA CAL PROT SENS SOUR VOLT 0 0 CAL PROT SOUR CurrentInit DATA SOUR FUNC CURR SENS VOLT PROT 20 SENS VOLT RANG 20 DATA OUTP STAT ON CurrentCal DA...

Страница 122: ... PRINT 1 OUTPUT 24 SOUR FUNC VOLT PRINT 1 OUTPUT 24 CAL PROT CODE KI002410 Unlock calibration Range 2 Initial range 200mV PRINT Model 2410 Voltage Calibration Constants PRINT DO Loop for all volts ranges PRINT 1 OUTPUT 24 SOUR VOLT RANGE Range PRINT 1 OUTPUT 24 CAL PROT SENS DATA PRINT 1 ENTER 24 LINE INPUT 2 Data PRINT Data PRINT 1 OUTPUT 24 CAL PROT SOUR DATA PRINT 1 ENTER 24 LINE INPUT 2 Data P...

Страница 123: ... Range Range 10 IF Range 009 AND Range 011 THEN Range 02 IF Range 19 AND Range 21 THEN Range 1 LOOP WHILE Range 1 PRINT 1 OUTPUT 24 CAL PROT LOCK Lock out calibration PRINT 1 OUTPUT 24 RST PRINT 1 LOCAL 24 CLOSE END C 8 Calibration Programs 2410 902 01 book Page 8 Monday November 7 2005 2 49 PM ...

Страница 124: ...rogram instructions C 3 H Handling and cleaning 5 2 I Instrument re assembly 5 10 L Line fuse replacement 3 2 M Miscellaneous commands B 3 N No comm link error 4 18 O Ordering information 6 2 Output current accuracy 1 14 Output voltage accuracy 1 11 P Parts lists 6 2 Performance verification 1 1 Performing the verification test procedures 1 7 Power on self test 4 2 Principles of operation 4 5 R Re...

Страница 125: ...and trade names are the property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 1 800 833 9200 www tek com keithley 12 15 ...

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