Instruction Manual P6021 60 MHz Current Probe
Contents
1. 37 555455055 LETETT eee 43 P6021 Instruction Manual Table of Contents List of Figures Figure 1 The P6021 Probe and Termination 2 Figure 2 Insertion Impedance of the P6021 Figure 3 Probe and Termination Input Current vs Prequency j4 icc coe a Cron tne ieee 9 Figure 4 Typical P6021 Phase Response 11 Figure 5 P6021 Schematic Diagram 13 Figure 6 Connecting the Probe to the Calibration Fixture 18 Figure 7 Location of Probe Adjustments 19 Figure 8 Location of Termination Adjustments 20 Figure 9 Disassembling the Probe 27 Figure 10 P6021 Probe Component Location 35 Figure 11 P6021 Termination Component Location 35 Figure 12 P6021 Exploded View 41 List of Tables Table 1 Warranted Electrical Characteristics 7 Table 2 Warranted Environmental Characteristics 8 Table 3 Maximum Ratings 8 Table 4 Certifications and Compliances 9 Table 5 Electrical Characteristics 10 Table 6 Mechanical Characteristics 11 Table 7 Equipment List2. 15 P6021 Instruction Manual General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures To Avoid Fire or Connect and Disconnect Properly Do not connect or disconnect probes or test Personal Injury leads while they are connected to a voltage source Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Connect the ground lead of the probe to earth ground only Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Do Not Operate Without Covers Do not operate this product with covers or panels removed Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry P6021 Instruction Manual lii General Safety Summary Symbols and Terms A A Terms in this Manual These
3. Set the calibrator output to off Do not change any circuit connections NOTE The attenuators that you use should be calibrated so that you can determine their error The following tests use a digital oscilloscope Variable volts div averaging and automatic peak to peak measurement functions will yield the best accuracy However a digitizer without these functions may be used as long as the minimum bandwidth specification is met as specified in the equipment list 2 mA mV Position Test 1 Connect the probe as you have for the sensitivity checks except connect the termination output to the input of the digitizer Set the BNC to banana adapter aside Set the termination box to the 2 mA mV position Set the digital oscilloscope input impedance to 1 M DC coupled sample mode averaging off Set the oscilloscope vertical sensitivity to 100 mV div and the horizontal scale to 20 Us div Set the calibrator for a 10 kHz 0 35355 A 1 output with the delta function is turned off P6021 Instruction Manual Service Information P6021 Instruction Manual 10 11 12 13 14 15 16 17 18 Turn the calibrator output Adjust the digital oscilloscope triggering for a centered waveform of approximately 500 mV p Adjust the fine volts div for a near full screen vertical waveform Nominal deflection at 500 mV div will be 5 divisions A digitizer with adjustable volts div can increase reso
4. averaging Wavetek 9100 with option 100 250 or Tektronix PG 506A Wavetek 9100 with option 100 250 Tektronix SG 5030 SG 503 Keithley 2000 HP 3458A Matching SG 503 PG 506A or Wavetek 9100 cable 15 Service Information Adjustment Procedures Preparation 1 Insert a small screwdriver between the cover and the termination near the part number and gently pry up the top cover of the P6021 termination by twisting the screwdriver Leave the bottom cover on since it must be in place when the termination is in use Set up the oscilloscope as described below Vertical mode CH 1 Horizontal mode Main Trigger source CH 1 Trigger coupling AC Trigger mode Peak to peak auto Trigger slope Positive Trigger level As required Ch 1 coupling DC Ch 1 resistance 1 MO Volts division 2 mV Time division 10 ns Averages 5 to 10 NOTE When using a digitizing oscilloscope set averaging on to increase resolution When using a Wavetek 9100 calibrator with the scopecal option no other calibrators are required The following setups are generic with nominal settings indicated for the major adjustment steps Set up the fast rise step calibrator as described below Output Repetition rate 1 Vp p gt 10 kHz Set up the sine wave calibrator as described below Frequency Amplitude Ref 50 kHz 5 Vp p NOTE Dirty or worn mating surfaces between the transformer and the lid degrade the low frequency response Clean and inspect
5. COVER COAX TERM W SHLD 6 KNOB CONN RF PLUG BNC 50 OHM MALE STR Mfr code 80009 05469 80009 91260 80009 0 9 9 00779 80009 80009 0435 80009 80009 80009 80009 24931 FEEDTHRU FRONT PNL 1 555L 0 285 0 375 32 THD 0 5 L 22 AWG TAB 0 384 DIA MTG FRAME COAX TERM CONN RCPT ELEC BNC FEMALE SPACER SLEEVE 0 06 L X 0 093 ID BRS CIRCUIT BD ASSY TERMINATION SEE 2 REPL ATTACHING PARTS SSCR ASSEM WSHR 2 56 X 0 25 PNH BRS NP P OZ END ATTACHING PARTS TERMN STANDARD ACCESSORIES LEAD ELEC PROBE GROUND SDI 23 AWG 6 0 L MANUAL TECH INSTRUCTION P6021 OPTIONAL ACCESSORIES CT 4 CURRENT XFMR 20MHZ 1KA 80009 24931 80009 TK0435 80009 80009 80009 Mfr part number 204036702 ORDER BY DESC 351019100 ORDER BY DESC 214084900 131 0715 00 2 330808 7 352015800 352015900 ORDER BY DESC 204036804 175104103 175106003 200085208 28PR104 1 426042303 28 R178 1 361021900 ORDER BY DESC 200085103 196312001 070094705 P6021 Instruction Manual Replaceable Mechanical Parts Figure 12 P6021 exploded view 41 P6021 Instruction Manual Replaceable Mechanical Parts 42 P6021 Instruction Manual Index A aberrations 17 accessories termination 2 accessories optional 3 accessories standard 3 6 6 inch ground lead 3 instruction manual 3 accuracy 7 adjusting the probe 79 adjusting the termina
6. NEWBERG OR 97132 HARRISBURG PA 17105 CLEVELAND OH 44101 FRANKLIN IN 46131 BEAVERTON OR 97077 0001 SAN JOSE CA 95112 39 Replaceable Mechanical Parts Replaceable mechanical parts list Fig amp index Tektronix part Serial no number number effective De eee 1 204 0367 02 2 214 0997 00 3 351 0191 00 4 214 0835 00 5 214 0849 00 6 131 0715 00 m 8 136 0252 00 9 352 0158 00 74 ail 352 0159 00 12 211 0001 00 13 204 0368 04 14 175 1041 03 175 1060 03 15 200 0852 08 16 131 0602 00 17 426 0423 03 18 131 0106 02 19 361 0219 00 21 211 0180 00 22 200 0851 03 23 196 3120 01 070 0947 05 40 Serial no discont d Qty Name amp description e r3 Lr Lr me FL LH P6021 PROBE CURRENT 60 MHZ 250A 5FT W TERM BODY HALF PROBE UPPER BALL BEARING 0 094 5 ST SLIDE TEST PROD SSPRING HLCPS 0 127 OD X 2 65 L SST RETURN SPR BRS CD PL CONTACT ELEC SPR UPR SHL CU BE NI PL TRANSFORMER SEE T1 REPL SOCKET PIN TERM PCB FEMALE STR ACCOM 0 013 0 020 DIA PIN TIN TIN SLEEVE CLOSED BOTTOM 0 142 L 0 038 DIA HOLDER CKT BD DELRIN CIRCUIT BD ASSY PROBE SEE 1 REPL HOLDER SPR RTNR BLACK DELRIN ATTACHING PARTS SSCREW MACHINE 2 56 X 0 25 PNH STL END ATTACHING PARTS BODY HALF PROBE LOWER CABLE ASSY RF 62 5 OHM 63 01 STANDARD ONLY CABLE ASSY RF 62 5 OHM COAX 111 0 L OPTION 03 ONLY
7. 833 9200 select option 1 Service support 1 800 833 9200 select option 2 Technical support Email techsupport tektronix com 1 800 833 9200 select option 3 1 503 627 2400 6 00 a m 5 00 p m Pacific time This phone number is toll free in North America After office hours please leave a voice mail message Outside North America contact a Tektronix sales office or distributor see the Tektronix web site for a list of offices vi P6021 Instruction Manual BEEN ee Operator Information Description Installation P6021 Instruction Manual Thank you for choosing a Tektronix current probe This manual describes the P6021 current probe with passive termination and provides information about making measurements with the probe The P6021 current probe converts an alternating current waveform to a voltage that can be displayed and measured on an oscilloscope display The probe provides accurate current measurements over a wide range of frequencies and allows you to measure current without breaking the circuit The P6021 probe is compatible with general purpose oscilloscopes having a 1 input impedance The P6021 probe comes with a passive termination that matches oscilloscope and probe impedance optimizes the probe performance and provides two sensitivity settings In the standard configuration the P6021 probe comes with a 5 foot cable and termination The following option is also available Option 03 9 foot cable
8. BD ASSY PROBE 80009 670111700 1 13 281 0122 00 CAP VAR CER DI 2 5 9P F 100V 59660 518 000 2 5 9 A1C14 283 0182 00 CAP FXD CER DI 51PF 5 400V 19701 2805D1R810BH03F A1L10 108 0526 00 COIL RF FIXED 50UH 0JRO3 108 0526 00 A1L12 108 0526 00 COIL RF FIXED 50UH 0JRO3 108 0526 00 A1L14 108 0529 00 COIL RF FIXED 1 6UH 0JRO3 108 0529 00 A1R10 311 0635 00 RES VAR NONWW TRMR 1K OHM 0 5W 32997 3329 158 102 AlR12 311 0635 00 RES VAR NONWW TRMR 1K OHM 0 5W 32997 3329 158 102 A1R13 317 0821 00 RES FXD CMPSN 820 OHM 5 0 125W 01121 8215 AIR14 317 0121 00 RES FXD CMPSN 120 OHM 5 0 125W 1727 SFR162322 180 111 120 0614 00 TRANSFORMER CUR UPPER AND LOWER HALF 80009 120061400 1 14 120 0468 00 XFMR TOROID 6 TURNS BIFILAR 454 0JRO3 120 0468 00 A2 670 1052 00 CIRCUIT BD ASSY TERMINATION 80009 670105200 A2C22 281 0123 00 CAP VAR CER DI 5 25PF 100V 59660 518 000 5 25 A2C25 281 0123 00 CAP VAR CER DI 5 25PF 100V 59660 518 000 5 25 A2C30 283 0140 00 CAP FXD CER DI 4 7P F 4 0 25P F 50V 51642 A100 050 NPO 47 A2J 20 131 0602 00 CONN RF PLUG BNC 50 OHM MALE STR FEEDTHRU FRONT 24931 28PR104 1 PNL 1 555L 0 285 L 0 375 32 THD 0 5 Figure 11 A2L22 108 0525 00 COIL RF FIXED 123NH 0JRO3 108 0525 00 A2L31 108 0395 00 COIL RF FIXED 64UH 0JRO3 108 0395 00 A2P 39 131 0106 02 CONN RCPT ELEC BNC FEMALE 24931 28 R178 1 A2R22 317 0101 00 RES FXD CMPSN 100 OHM 5 0 125W TK1727 SFR162322 180 A2R24 321 0077 00 RES FXD FILM 61 9 OHM 1 0 125W TC T0 9163
9. part number when ordering replacement parts from Tektronix 3and4 Serial number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entry indicates the part is good for all serial numbers B Name amp description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification 6 This indicates the code number of the actual manufacturer of the part Mfr part number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y 1 1 1972 Component Number Component Number je A23A2R1234 23 A2 R1234 Assembly number Subassembly Number Circuit Number optional Read Resistor 1234 of Subassembly 2 of Assembly 23 List of Assemblies list of assemblies is located at the beginning of the electrical parts list The assemblies are listed in numerical order When a part s complete component number is known this list will identify the assembly in which the part is located Chassis Parts Chassis mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List Mfr Code to Manufacturer The table titled Manufacturers Cross Index shows codes names and add
10. switch held open so that the plus and minus signs are visible When you close the probe the front portion with the markings will disappear inside the calibration fixture 17 Service Information 7 Turn on the test equipment Figure 6 Connecting the probe to the calibration fixture 8 Adjust the oscilloscope position triggering intensity and calibration generator amplitude controls until the signal is centered on the display approximately five divisions peak to peak at 2 mV div 9 For the first 50 ns aberrations should be within 10 peak to peak After the first 50 ns aberrations should be less than 2 peak to peak To check for compliance follow steps 9a through 9NO TAG Termination Sensitivity at 2 mA mV a Turn on averaging and set the number of averages to 400 for verification or 16 for adjustment b Turn on amplitude and peak to peak measurement functions Check that the amplitude meassurement function is set up to use the histogram method to determine pulse topline and baseline reference levels c Setthe horizontal timebase to 50 ns div and the pretrigger position to 20 Adjust the position and trigger controls for a vertically centered pulse display with approximately 2 divisions of baseline and 8 divisions of topline displayed This will allow for an accurate pulse amplitude reference measurement at 50 ns div 18 P6021 Instruction Manual Service Informa
11. 0 C to 50 C 32 F to 122 F Nonoperating 40 C to 65 40 F to 149 F Altitude Operating To 2 000 m 6 561 ft lt 300 V CAT To 4 572 m 15 000 ft 150 V CAT I Nonoperating To 15 240 m 50 000 ft Table 3 Maximum ratings Characteristic Information Maximum Continuous CW Current Refer to Figure 3 for frequency derating curves 2 mA mV 5 sine wave between 1 2 kHz and 5 MHz 10 mA mV 15 Sine wave between 300 Hz and 5 MHz Maximum Pulse Current 250 A peak not to exceed 500 A us or 5 Agnus s product greater than 500 A us reduces probe output to zero due to core saturation Maximum Working 300 VAC or VDC CAT I and 600 Vp limited to Input Voltage lt 10 ms and lt 25 duty factor uninsulated conductors 8 P6021 Instruction Manual Service Information 100A 20A 10mA mV 2 AMPS 0 1 10 Hz 100 Hz 1 kHz 1 MHz 10 MHz 100 MHz FREQUENCY Figure 3 Probe and termination input current vs frequency derating Table 4 Certifications and compliances EC Declaration of Conformity Low Voltage Compliance
12. 200 TO 200 100 1079 120 0 07596 P6021 Instruction Manual _ gto o DEMNM Service Information Warranted Characteristics P6021 Instruction Manual This section lists the various warranted characteristics that describe the P6021 Current Probe Included are warranted electrical and environmental characteris tics Warranted characteristics are described in terms of quantifiable performance limits which are warranted The electrical characteristics listed in Table 1 apply under the following conditions The probe and instrument must be in an environment whose limits described in Table 2 Table 1 Warranted electrical characteristics Characteristic Sensitivity Midband Accuracy System Bandwidth with BW gt 200 MHz oscilloscope 2 mA mV 10 mA mV Probe Rise Time Step Response Aberrations probe and termination at either sensitivity setting Information 2 mA or 10 mA for each mV at oscilloscope input selected by termination sensitivity control 3 at 10 kHz to 30 kHz 450 Hz to 60 MHz 120 Hz to 60 MHz lt 5 8 ns Because the oscilloscope inout capacitance becomes a part of the termination network the step response will vary with different oscilloscopes lt 10 peak to peak within 50 ns of step lt 2 peak to peak thereafter Service Information Table 2 Warranted environmental characteristics Characteristic Information Temperature range Operating
13. 7 CMF55116G61R 90F A2R31 321 0069 00 RES FXD FILM 51 1 OHM 1 0 125W TC T0 91637 CMF55116G51R10F A2R33 321 0039 00 RES FXD FILM 24 9 OHM 1 0 125W TC T0 91637 CMF55116G24R 90F A2R34 321 0038 00 RES FXD FILM 24 3 OHM 1 0 125W TC T0 91637 CMF55116G24R 30F A2R35 317 0036 00 8843 RES FXD CMPSN 3 6 OHM 5 0 125W 01121 BB36G5 A2R35 317 0240 00 8844 RES FXD CMPSN 24 OHM 5 0 125W TK1727 SFR162322 180 A2R36 311 0605 00 RES VAR NONWW TRMR 200 OHM 0 5W 32997 3329 648 201 A2SW30 260 0723 00 SWITCH SLIDE DPDT 0 5A 125VAC 19727 GF126 0028 34 P6021 Instruction Manual Replaceable Electrical Parts 14 1 13 A1R13 A1R10 A1R12 A1L10 I A1 A1L12 O O Figure 10 P6021 probe component location 2131 A2SWS30 2 30 2122 can A2R33 A2 A2R36 A2C25 A2R34 Figure 11 P6021 termination component location P6021 Instruction Manual 35 Replaceable Electrical Parts 36 P6021 Instruction Manual BEEN eee Replaceable Mechanical Parts This section contains a list of the replaceable mechanical components for the P6021 Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved components as they become a
14. C saturation 0 maximum input voltage 8 maximum pulse current amp mechanical parts list 37 03 options cable 9 foot oscilloscope 1 3 impedance input connectors use with 1 6 p parts list electrical 3 mechanical 37 phase response physical specifications cable length weight 11 probe adjustments 17 calibration 14 15 circuit description 12 compatibility with oscilloscope 1 12 description 6 disassembly 26 impedance of 5 parts 2 repair 28 shielding 6 12 pulse current maximum R R10 19 R12 19 R36 19 20 repairing probe 28 termination 26 replacing termination circuit board 28 termination connectors 28 transformer 28 P6021 Instruction Manual 45 Index 5 safety service information 4 schematic diagram 3 sensitivity 2 checking 2 specification 7 sensitivity control 4 7 12 sensitivity setting 4 7 12 service safety warnings 4 shielding 6 12 signal delay 10 sliding switch 4 7 12 soldering procedures for 28 specifications 7 10 electrical 7 30 environmental physical 11 T termination 2 adjustments 77 circuit description 2 repair 26 replacing circuit board 28 replacing connectors 28 test equipment 5 oscilloscope settings 16 pulse generator settings 16 recommended 5 tilt 10 transformer 2 maintenance 26 matching 28 primary 4 replacing 28 second
15. Digital oscilloscopes with zoom mode can increase resolution Noise and statistical variations will limit the useful resolution Turn gating off after completing measurements All of the adjustments interact you may have to repeat adjustments to meet all specifications P6021 Instruction Manual Service Information Check Sensitivity P6021 Instruction Manual E Verify that the calibrator is off before making any circuit connections Disconnect any other connections to the calibrator before starting these checks 2 Connect the 4 inch lead across the I and I terminals of the calibrator 3 Connect the current probe jaws around the lead observing correct polarity The probe jaws must be clean aligned around the lead and properly closed for accurate measurements 4 Connect the probe output to the termination box 5 Connect the termination box output to the DMM input terminals using a BNC to banana adapter 6 Select the 2 mA mV position for the termination box 7 Set the DMM to ACV slow or the most accurate sample rate auto range 8 Set the calibrator to the ACI function by pressing the A current and A buttons NOTE For all of the following tests the DMM voltage readings and calibrator settings are in RMS units unless otherwise specified You may have to manually select a lower range on the DMM to enhance the accuracy and resolution of your measurements 2 mA mV Sensitivity Tests 1 Check that the t
16. E 125 TURNS TEKTRONIX INC Figure 7 Location of probe adjustments P6021 Instruction Manual 19 Service Information 20 C22 C25 Figure 8 Location of termination adjustments 11 12 13 14 Set the termination sensitivity control to the 10 mA mV position Set the oscilloscope vertical deflection to 1 mV division Adjust the oscilloscope position triggering intensity and calibration generator amplitude controls until the signal is centered on the display Make certain that you can see the top of the waveform Check again to make sure that the aberrations are within the specifications described in Step 9 beginning on page 18 Termination Sensitivity at 10 mA mV Functional Check 1 If the gated measurement mode is still active verify the gated zone 1s for the full displayed window Repeat steps 9a through 9f except set the digital oscilloscope to 1 mV div and adjust for a 2 00 mV amplitude display at 50 ns div Check aberrations as for the 2 mA mV position using the gated zone peak to peak measurements For this case 10 0 2 mV or 200 2 0 04 mV or 40 UV Measurement notes For the 2 measurement you may have to increase the averaging to 400 or greater to minimize noise If the average reading fluctuates use the average of these fluctuations or turn on statistics if available and use a weighted mean value
17. Instruction Manual Tektronix P6021 60 MHz Current Probe 070 0947 05 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all safety summaries prior to performing service www tektronix com Copyright Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc Box 500 Beaverton OR 97077 TEKTRONIX and TEK are registered trademarks of Tektronix Inc LUBRIPLATE 1s a registered trademark of the Fiske Brothers Refining Co POSIDRIV is a registered trademark of the Philips Screw Co WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be respons
18. RS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Table of Contents General Safety Summary iii Service Safety Summary Contacting Tektronix vi Operator Information 1 PDO e a peat deed ne sou A 1 or ye 1 Operating Considerations 4 Service Information Ar REESE 7 Characteonsies feret enc die edat bud eee wees 7 Py ER dub cic uua Bed id pure 10 C Cut DOSCEDDHORL Vo eamus a der ed Dapur t 12 Porormance VeCINCAION cura opua one ee E ded i eee uae 14 aniei agh bc Ar dhiadh 16 MET 26 Replaceable Electrical Parts eb ey eae sees 31 Parts Ordering Information 31 Using the Replaceable Electrical Parts List ad Replaceable Mechanical Parts 37 Parts Ordering Information 068265648600 IG Ee e ues 37 Using the Replaceable Mechanical Parts List
19. aintain your probe for a long service life CAUTION To prevent damage to probe materials avoid using chemicals that contain benzene benzine toluene xylene acetone or similar solvents To avoid degrading the probe s performance do not lubricate the polished mating surfaces of the transformer To clean the probe body use a soft cloth dampened in a solution of mild detergent and water To clean the core open the jaw and clean the exposed core surfaces with a cotton swab dampened with isopropyl alcohol isopropanol or ethyl alcohol fotocol or ethanol Do not lubricate the mating surfaces of the jaws Any lubricant between the core pieces should be removed with a recommended solvent Do not use chemicals containing benzine benzene toluene xylene acetone or similar solvents Do not use a petroleum based lubricant on the plastic If the plastic slide assembly requires lubrication use a silicone based grease sparingly Do not immerse the probe in liquids or use abrasive cleaners When cleaning the probe look for any excessive wear of the slide parts that might cause the probe to operate improperly Dirty or worn mating surfaces between the transformer and the lid can degrade low frequency response Clean these surfaces if necessary Use the following procedure to disassemble the probe for cleaning or repair You will need a 1 Posidriv screwdriver Work over a smooth clean surface so that you can easily find any small piec
20. al numbers 5 This indicates the quantity of parts used 6 Name amp description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification This indicates the code of the actual manufacturer of the part 8 Mfr part number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y 1 1 1972 Chassis Parts Chassis mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List Mfr Code to Manufacturer The table titled Manufacturers Cross Index shows codes names and addresses Cross Index manufacturers or vendors of components listed in the parts list 38 P6021 Instruction Manual Replaceable Mechanical Parts Manufacturers cross index Mfr code TK0435 0 9 9 00779 05469 24931 80009 91260 Manufacturer LEWIS SCREW CO GEROME MFG CO INC AMP INC BEARINGS INC SPECIALTY CONNECTOR CO INC TEKTRONIX INC CONNOR SPRING AND MFG CO A SLOSS AND BRITTAN INC CO P6021 Instruction Manual Address 4300S RACINE AVE PO BOX 737 2800 FULLING MILL PO BOX 3608 3634 EUCLID 0 BOX 6925 2100 EARLYWOOD DR PO BOX 547 14150 SW KARL BRAUN DR PO BOX 500 1729 JUNCTION AVE City state zip code CHICAGO IL 60609 3320
21. ary 4 turns ratio 2 V vertical scale settings with oscilloscope 4 vertical sensitivity 4 12 increasing 5 voltage maximum W winding 5 2 46 P6021 Instruction Manual
22. d Maintenance Dirty or worn mating surfaces between the transformer and the lid can degrade low frequency response Clean these surfaces if necessary Calibration procedures can also be used as performance checks by completing all steps except those that adjust the probe This checks the probe and termination to the original performance standards without requiring you to remove the termination cover or make internal adjustments P6021 Instruction Manual Service Information Table 7 Equipment list Item Oscilloscope Bandwidth Vertical sensitivity Measurement functions Calibration generator Fast rise step Sinewave current Sinewave voltage Digital Multimeter DMM RMS ACV Coaxial cable Termination feedthrough BNC Two attenuators Coaxial cable Adapter Fixture Lead 1 Or equivalent P6021 Instruction Manual lt ns Vp p into 50 O 0 5 Ap p to 15 Ap p 120 Hz to 10 kHz lt 0 60 0 9 Ap p 30 kHz lt 0 60 5 Vp p into 50 100 mA 50 kHz to gt 60 MHz 1 5 flatness 5 1 2 digits or better 50 mV to 1 0 V 10 kHz lt 50 35 30 mV to 160 30 kHz 0 45 and pulse waveform calibrator outputs Tektronix Part Number 011 0049 01 Tektronix Part Number 011 0059 02 Tektronix Part Number 012 0482 00 Tektronix Part Number 017 0064 00 Tektronix Part Number 067 0559 00 TDS 420A TDS 303X or TDS 305 DC to gt 200 MHz 1 mV div Amplitude pk pk gated measurements
23. d cable out of the probe body as a unit If you need to you can unplug the transformer from the circuit board To reassemble the probe reverse the procedure above When replacing the slide switch spring retainer and transformer top as a unit push the slide switch contacts gently inside the sides of the bottom housing To make repairs inside the probe body disassemble the probe as described in the previous section If you need to solder on the circuit board use a minimum of heat and observe normal circuit board procedures If you need to replace the current transformer replace the entire assembly including the other half of the transformer core mounted in the slide switch The transformer halves are matched at the factory before shipment Repairing the termination can consist of replacing either the connectors or the circuit board These tasks are described below Replacing the Connectors To replace the connectors follow these steps 1 e ow Insert a small screwdriver between the cover and the termination near the part number and gently pry up the plastic snap on cover from the termina tion Using a heat sink unsolder the leads from the defective connector Unscrew and remove the defective connector Replace the defective connector with the new one Screw and solder the new connector back in place Align the switch with the slider in the front cover and replace the front cover Replacing the Circuit Boa
24. e on the conductor so that the arrow on the probe matches conventional current flow through the conductor orientation of the displayed waveform will be correct c Release the switch allowing the probe to close d Lock the slide switch To lock the switch push it firmly toward the transformer the switch will move only about 1 8th inch Locking the switch assures maximum contact between the two halves of the transformer secondary The conductor now becomes the primary of the transformer When measuring current always check that the probe slide switch is moved completely forward into the locked position WARNING To prevent shock when measuring uninsulated conductors keep your hands and fingers behind the ridge on the probe head 4 P6021 Instruction Manual Operator Information Insertion Impedance Minimizing Loading Effect Increasing Probe Sensitivity P6021 Instruction Manual When you insert a conductor into the probe you add impedance to the circuit you are measuring This additional impedance affects signals this is particularly important if you are measuring fast rise times Figure 2 illustrates the equivalent circuit with the additional impedance introduced by the P6021 2 8 uH 1 7 nH WOOO HOTT 004 Q Figure 2 Insertion Impedance of the P6021 To minimize the loading effect of the probe clamp it at the low or ground end of a component lead when possible This method also minim
25. ent or improved part your local Tektronix field office or representative will contact you concerning any change in part number Change information if any is located at the rear of this manual Using the Replaceable Electrical Parts List The tabular information in the Replaceable Electrical Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts The following table describes each column of the electrical parts list P6021 Instruction Manual 31 Replaceable Electrical Parts Parts list column descriptions Column Column name Description 1 Component number The component number appears on diagrams and circuit board illustrations located in the diagrams section Assembly numbers are clearly marked on each diagram and circuit board illustration in the Diagrams section and on the mechanical exploded views in the Replaceable Mechanical Parts list section The component number is obtained by adding the assembly number prefix to the circuit number see Component Number illustration following this table The electrical parts list is arranged by assemblies in numerical sequence A1 with its subassem blies and parts precedes 2 with its subassemblies and parts Chassis mounted parts have no assembly number prefix and they are located at the end of the electrical parts list 2 Tektronix part number Use this
26. ermination is set to the 2 mA mV position 2 Set the calibrator for a 10 kHz 1 76777 A 5 Ap output Verify that the delta function is turned off 3 Turn the output on and allow the DMM reading to stabilize The DMM must read between 0 857 and 0 911 volts 0 884 V nominal 4 Select the 10 button on the calibrator 10 kHz 0 5 Ap p 5 Allow the DMM reading to stabilize The DMM must read between 85 7 and 91 1 mV 88 4 mV nominal 6 Set the calibrator output to 318 198 mA 0 90 7 Change the calibrator frequency to 30 kHz 8 Allow the DMM reading to stabilize The DMM must read between 0 1543 and 0 1639 V 0 1591 V nominal 9 Set the calibrator output to off 21 Service Information 22 Check Low Frequency Response 10 mA mV Sensitivity Tests 1 2 Select the 10 mA mV position on the termination box Set the calibrator for a 10 kHz 5 3033 A 15 output Verify that the delta function is turned off Turn the output on and allow the DMM reading to stabilize The DMM must read between 0 514 and 0 546 volts 0 530 V nominal Select the 10 button on the calibrator 10 kHz 1 5 Allow the DMM reading to stabilize The DMM must read between 51 4 and 54 6 mV 53 0 mV nominal Set the calibrator output to 318 198 mA 0 90 A Change the calibrator frequency to 30 kHz Allow the DMM reading to stabilize The DMM must read between 30 87 and 32 77 mV 31 82 mV nominal
27. es that may drop Refer to Figure 9 CAUTION To avoid degrading the performance of the probe do not touch the polished mating surfaces of the transformer after cleaning P6021 Instruction Manual Service Information Upper half of probe body L SS SJ Ball bearing Detent ha Slide switch Top half of transformer Bottom half of transformer Figure 9 Disassembling the probe gt 1 m P6021 Instruction Manual Spring retainer Pozidriv screws 2X Spring retainer holder Cable Strain relief boot Bottom housing Probe nose Hold the probe horizontally with the slide switch up Move the strain relief boot back over the cable Be careful not to lose the small ball bearing you are about to expose Slowly lift the upper half of the probe body slightly at the cable end and push the assembly forward over the nose and off Remove the small ball bearing from the detent in the slide switch Lift the back of the return spring retainer out of the holder Remove the slide switch spring retainer and the top of the transformer as a unit Note the orientation of the movable portion of the transformer in the slide 27 Service Information Repairing the Probe Repairing the Termination 28 10 Remove the two Posidriv screws that secure the spring retainer holder to the probe body then remove the small black plastic holder Lift the circuit board transformer an
28. ible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment or c to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDO
29. izes noise or stray signal interference You can increase the current sensitivity of the probe by increasing the number of times a conductor passes through it For example if the conductor loops through the probe twice a two turn primary winding the secondary current is doubled For example suppose you set the termination sensitivity to 2 mA mV and the oscilloscope vertical scale to 10 mV division Ordinarily this would result in the equivalent of 2 X 10 or 20 mA division However if the conductor is looped through the probe twice the vertical scale is divided by two resulting in the equivalent of 10 mA division Looping the conductor twice effectively doubles vertical sensitivity however impedance from the probe winding 15 also reflected into the circuit being measured This impedance is proportional to the square of the number of loops This additional impedance affects signals this impedance 15 particularly important when you are measuring high frequency current waveforms or waveforms with fast rise times Operator Information Probe Shielding Droop The P6021 is shielded to minimize the effect of external magnetic fields However strong fields can interfere with the current signal being measured If you suspect that an external field is interfering with your measurement remove the probe from the conductor but keep it in the same location as when you made the suspect measurement If a signal still appears on the oscillo
30. l 11 Service Information Circuit Description Current Probe Termination 12 This section describes the circuits in the P6021 current probe and termination For the schematic diagram of the probe and termination see Figure 5 on page 13 The P6021 current probe consists of a current transformer mounted in the nose of the probe head case an impedance matching network and an internal switch to disconnect the transformer shield from ground The transformer contains a two section U shaped ferrite core One section is stationary the other is mechanically movable to permit closing the core around the conductor being measured The conductor under test forms a one turn primary winding for the transformer the windings around the stationary portion of the core are the secondary windings Paralleled windings in the secondary assure a fast step response The circuitry between the transformer and the coaxial cable corrects any differences in level between the signal induced in the parallel windings of the secondary and matches the balanced probe winding to the cable As indicated on the probe body the turns ratio of the P6021 is 125 1 This refers to the number of windings in the secondary of the probe transformer The probe transformer is shielded to eliminate interference from outside signals To eliminate the possibility of creating a short circuit from this shield to the conductor being measured the slide switch disconnects the ground f
31. lution to approximately 8 divisions Choose the peak to peak measurement function of the oscilloscope and fine adjust the calibrator output for 500 mVp p digitizer reading by selecting and varying the delta output control of the calibrator Turn on averaging 16 or greater and readjust the calibrator output if necessary to obtain a stable 500 reading Allow sufficient time for the measurement to update with averaging turned on If your digitizer only supports cursor measurements adjust the cursor readout for the nominal 500 mV and adjust the calibrator output for a peak to peak amplitude waveform that corresponds to the cursor settings You may have to adjust the oscilloscope offset to center the waveform between the cursors For the remainder of this test 500 mVp p is the reference reading Change the calibrator output frequency to 450 Hz Set the oscilloscope horizontal sensitivity to 500 pis div to obtain a centered waveform Turn averaging off to provide for a quicker waveform update Turn averaging on Allow the oscilloscope averaged reading to stabilize The peak to peak amplitude reading must be gt 354 0 707 500 mVp p reference amplitude If using statistical averaging allow enough update time for the mean value to stabilize If using cursors to take this measurement adjust the cursors to measure the peak to peak amplitude Use averaging if possible Set the calibrator output to off Do
32. nation has a control that allows you to select probe sensitivity The switch has two positions 2 mA mV and 10 mA mV When the control is in the 2 mA mV position the oscilloscope displays 1 mV for every 2 mA of current in the circuit under test When the control is in the 10 mA mV position the oscilloscope displays 1 mV for every 10 mA of current in the circuit under test You can set vertical scale on the oscilloscope to any scale factor as determined by the signal amplitude To calculate the overall vertical scale factor for the oscilloscope probe and termination multiply the termination sensitivity control setting by the vertical scale factor of the oscilloscope For example if the termination control is set to the 10 mA mV position and the oscilloscope to a vertical scale of 20 mV division the overall scale factor is 10 X 20 or 200 mA division Sensitivity control Open Probe Slide Switch The slide switch on the probe has three positions Closed open closed and locked Use your thumb to move the probe slide switch The switch is spring loaded so that it automatically moves from the open to Locked closed positions Probe slide switch To Use the Probe Ridge a Pull the slide switch toward you and hold the switch in position b Place the conductor under test inside the exposed transformer core The arrow on the transformer end of the probe indicates conventional current flow If you place the prob
33. not change any circuit connections 10 mA mV Position Test 1 2 Set the termination box to the 10 mA mV position Set the oscilloscope vertical sensitivity to 50 mV div and the horizontal scale to 20 Us div set the calibrator for a 10 kHz 1 06066 A 3 output with the delta function is turned off 23 Service Information 10 11 12 13 14 15 16 17 24 Turn on the calibrator output Adjust the digital oscilloscope triggering for a centered waveform of approximately 300 mV p Adjust the fine volts div for a near full screen vertical waveform Nominal deflection at 50 mV div will be 6 divisions A digitizer with adjustable volts div can increase resolution to approximately 8 divisions Choose the peak to peak measurement function of the oscilloscope and fine adjust the calibrator output for a 300 mVp p digitizer reading by selecting and varying the delta output control of the calibrator Turn on averaging 16 or greater and readjust the calibrator output if necessary to obtain a stable 300 reading Allow sufficient time for the measurement to update with averaging turned on If your digitizer only supports cursor measurements adjust the cursor readout for the nominal 300 mV and adjust the calibrator output for a peak to peak amplitude waveform that corresponds to the cursor settings You may have to adjust the oscilloscope offset to center the waveform between the curso
34. nterminated can cause a high voltage to develop in the secondary winding which may damage the current probe transformer P6021 Instruction Manual Operator Information Using the Standard Accessories w Optional Accessories P6021 Instruction Manual Your P6021 is shipped with the following accessories This instruction manual Read these instructions to familiarize yourself with the features specifications and operation of the P6021 current probe 6 inch ground lead Use the 6 inch ground lead to ground the shield around the probe transformer at the probe end of the cable This allows you to move the ground connection closer to the circuit that you are measuring thereby improving high frequency response The ground lead clips onto the ground connector on the bottom of the probe as shown Please refer to the parts list in the section entitled Replaceable Mechanical Parts for part numbers Your P6021 may be used with the following optional accessory 4 Current Probe The CT 4 is a robust clip on transformer that extends the current range of the P6021 up to 1000 amps provided the amp second rating is not exceeded The CT 4 has receptacles for current probes in either 20 1 or 1000 1 step down ratios Operator Information Operating Considerations The information in this section will help you make effective use of your P6021 probe Features and Controls Sensitivity Control The P6021 termi
35. rd To replace the circuit board follow these steps 1 Remove the plastic snap on covers from the front and back of the termina tion Using a heat sink unsolder the leads from the connectors Unscrew the two screws from the back of the circuit board P6021 Instruction Manual Service Information P6021 Instruction Manual Remove the circuit board from the termination and repair it as you require being careful to use a minimum of heat and observe normal circuit board procedures Replace the circuit board by reversing the above procedure Align the switch with the slider in the front cover and replace the front cover 29 Service Information 30 P6021 Instruction Manual Replaceable Electrical Parts This section contains a list of the electrical components for the P6021 Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements Therefore when ordering parts it is important to include the following information in your order Part number Instrument type or model number Instrument serial number Instrument modification number if applicable If you order a part that has been replaced with a differ
36. resses Cross Index manufacturers or vendors of components listed in the parts list 32 P6021 Instruction Manual Replaceable Electrical Parts Manufacturers cross index Mfr code TK1727 0 R03 01121 24931 51642 19701 32997 59660 79727 80009 91637 Manufacturer PHILIPS NEDERLAND BV AFD ELONCO ZMAN MAGNETICS INC ALLEN BRADLEY CO SPECIALTY CONNECTOR CO INC CENTRE ENGINEERING INC PHILIPS COMPONENTS DISCRETE PRODUCTS DIV RESISTIVE PRODUCTS FACILITY AIRPORT ROAD BOURNS INC TRIMPOT DIV TUSONIX INC C W INDUSTRIES TEKTRONIX INC DALE ELECTRONICS INC P6021 Instruction Manual Address POSTBUS 90050 7633 5 180th 12015 2ND ST 2100 EARLYWOOD DR BOX 547 2820 E COLLEGE AVE PO BOX 760 1200 COLUMBIA AVE 7741 N BUSINESS PARK DR PO BOX 37144 130 J AMES WAY 14150 SW KARL BRAUN DR PO BOX 500 2064 12TH AVE PO BOX 609 City state zip code 5600 PB EINDHOVEN THE NETHERLANDS KENT WA 98032 MILWAUKEE WI 53204 2410 FRANKLIN IN 46131 STATE COLLEGE PA 16801 7515 MINERAL WELLS TX 76067 0760 RIVERSIDE CA 92507 2114 TUCSON AZ 85740 7144 SOUTHAMPTON PA 18966 3818 BEAVERTON OR 97077 0001 COLUMBUS NE 68601 3632 33 Replaceable Electrical Parts Replaceable electrical parts list Component Tektronix Serial no Serial Mfr number part number effective discontd amp description code Mfr part number Figure 10 Al 670 1117 00 CIRCUIT
37. rom the shield when you open the sliding portion of the probe to connect or remove it from a conductor The P6021 termination consists of a 62 5 2 impedance matching network to terminate the coaxial cable and a voltage divider that is switched in by a sensitivity control to change the sensitivity by a factor of five When the control is in the 2 mA mV position a 10 mA current signal in the conductor under test induces a 5 mV signal at the output of the termination This assumes that the termination is connected to 1 MQ input oscilloscope When the sensitivity control is in the 10 mA mV position a 10 mA current signal is attenuated to induce a mV signal at the output of the termination P6021 Instruction Manual Service Information MECHANICALLY LINKED SPRING RETURN TO NORMALLY CLOSED POSITIO FERRITE TRANSFORMERS gt Ha CORE T14 W20 J20 P39 q 14 M 210552 5 25 a L10 5 2 8102 E A q C14 TAN R24 COMP A mA m p 5 51 T ADDED 61 9 B n b AFTER 3 1249 SHIELD P6021 PROBE P6021 PASSIVE TERMINATION Figure 5 P6021 schematic diagram P6021 Instruction Manual 13 Service Information Performance Verification A 14 WARNING To a
38. rs For the remainder of this test 300 mV is the reference reading Change the calibrator output frequency to 120 Hz Set the oscilloscope horizontal sensitivity to 2 ms div to obtain a centered waveform Turn averaging off to provide for a quicker waveform update Turn averaging on Allow the oscilloscope averaged reading to stabilize The peak to peak amplitude reading must be gt 212 0 707 300 mV p p reference amplitude If using statistical averaging allow enough update time for the mean value to stabilize If using cursors to take this measurement adjust the cursors to measure the peak to peak amplitude Use averaging if possible Set the calibrator delta to off Set the calibrator output to off P6021 Instruction Manual Service Information Check High Frequency Response P6021 Instruction Manual To achieve the highest accuracy when taking the following measurements turn on averaging and use the peak to peak measurement function rather than manual cursor measurements 1 2 es 29 ba 10 11 12 13 14 15 16 17 Connect the current probe calibration fixture to the sine wave generator output using the appropriate adapters Connect the probe to the current probe calibration fixture Ensure that the termination sensitivity is set to 2 mA mV Set the oscilloscope vertical deflection to 10 mV div Set the oscilloscope horizontal scale to 10 Us div Set the sine wa
39. scope try to measure the conductor current at a point farther from the location of the magnetic field If you must measure current in the presence of a strong magnetic field you can minimize its interference by using two current probes and a differential input oscilloscope To do so follow these steps 1 Connect the probes with termination to the positive and negative inputs of the oscilloscope 2 Clamp one probe around the conductor whose current you want to measure 3 Place the other probe as close as possible to the first Ensure that its slide switch is completely closed without a conductor inside it 4 Set the oscilloscope to subtract the component of the signal that is common to both probes 5 Adjust the positions of the probes for best results It may be difficult to eliminate the undesirable signal completely due to differences between the probes or their terminations The flat top response of any AC current probe displays a certain amount of droop This is caused by probe inductance loading the source impedance causing an L R exponential decay For short pulse widths the response looks nearly flat The amount of droop can be calculated from the following relationship Droop 200 where T pulse duration in microseconds f lower 3 dB frequency of probe in Hertz For example to calculate the percent droop of a 100 Us pulse measured with a P6021 probe In the 10 mA mV position f 120 Hz o Droop
40. terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product AN Ei CAUTION Double Protective Ground Refer to Manual Insulated Earth Terminal P6021 Instruction Manual service Safety Summary P6021 Instruction Manual Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present To avoid electric shock do not touch exposed connections Contacting Tektronix Contacting Tektronix Phone 1 800 833 9200 Address Tektronix Inc Department or name if known 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA Web site www tektronix com Sales support 1 800
41. them before performing the following procedures See page 26 for cleaning instructions 16 P6021 Instruction Manual Service Information Adjust Aberrations A P6021 Instruction Manual CAUTION To avoid damaging the probe do not disconnect the probe termination when measuring high currents Leaving the probe unterminated can cause a high voltage to develop in the secondary winding that may damage the current probe transformer m X ees 9 Using the appropriate adapter connect the current probe calibration fixture to the fast rise output of the calibration generator positive going transition 0 Set the fast rise function For the Wavetek 9100 select the Aux oscilloscope and auxillary and edge step waveform functions Set the output for transition 100 kHz repetition rate and 1 Vp p output The signal output is through the BNC connector the rear of the signal generator Or if you are using a 506 set the function to Fast Rise Connect the P6021 probe BNC connector to the termination Connect the P6021 termination to the oscilloscope Ch 1 input Set the P6021 termination sensitivity to 2 mA mV Pulling back on the probe slide switch connect the probe to the current probe calibration fixture Ensure that the current is flowing in the correct direction the minus sign should be near the outside and the plus sign should be near the connectors as shown in Figure 6 The figure shows the probe slide
42. tics are described in terms of typical or average performance Typical characteristics are not warranted Table 5 Electrical characteristics Characteristic Tilt 2 mA mV 10 mA mV Maximum DC saturation Signal Delay 5 foot probe with termination 9 foot probe with termination Insertion Impedance 10 Information 2 8 or less within 10 us of step 7 5 or less within 100 us of step 0 5 A Approximately 9 ns Approximately 15 8 ns 0 03 orless at 1 MHz increasing to 1 0 or less at 60 MHz P6021 Instruction Manual Service Information Table 6 Mechanical characteristics Characteristic Information Probe Cable Length 1 5 mor2 75m Net Weight Probe and 5 foot cable 103 gm Probe and 9 foot cable 125 gm Termination 48 gm Termination 98 mm 28 mm 22 mm Probe Body 200 mm 16 mm 32 mm Maximum Conductor Diameter 0 141 in 3 58 mm Freguency 100 H2 1 kH2 10 kH2 100 kH2 1 MHz 10 MHz 100 MHz 100 Se a 50 IN bhus po Scr NR 0 qu e 50 gt Q _ 1400 Termination at 10 mA Termination at 2 mA 150 200 Figure 4 Typical P6021 phase response P6021 Instruction Manua
43. tion d Adjust the calibrator output for a 10 0 mV amplitude measurement Allow time for the averaged value to settle Do not use the peak to peak measurement when setting the pulse reference amplitude Turn on the gating measurement mode and use the gated cursors and peak to peak measurement to verify the aberration specification which are peak to peak tolerances Select 10 ns div to verify the first 50 ns specification and 50 ns div to verify the gt 50 ns specification Position the gated cursors to define the measurement zones for each case With the oscilloscope at 2 mV div 10 1 mV or 0 5 division 2 0 2 mV or 0 1 division for a reference 10 signal 10 The following adjustments affect aberrations and flat top response C13 R10 and R12 of the probe see Figure 7 and C22 C25 and R36 of the termination see Figure 8 To minimize aberrations and achieve the best flat top response the following procedure is recommended However these adjustments interact you may have to readjust several of them to ensure minimum aberrations a Adjust R10 and R12 for flat response Controls overshoot in the first 10 ns time domain Adjust C13 for flat response Controls slope in first 20 ns Adjust R36 for flat response Controls front corner first 5 ns Adjust C25 to minimize wrinkles in the 10 to 20 ns domain Adjust C22 to minimize wrinkles in the 15 to 25 ns domain R12 R10 C13 P6021 AC CURRENT PROB
44. tion 79 attaching the probe 1 6 bandwidth checking 22 25 specification 7 C C13 19 C22 19 20 C25 19 20 cable 9 foot calibrating the probe 14 30 Certifications 9 checking performance 4 circuit description 2 30 cleaning the probe 26 Compliances 9 continuous current maximum current flow direction 4 current vs frequency derating 9 D DC saturation maximum 0 direction of current flow 4 disassembling the probe 26 28 E electrical parts list 3 electrical specifications 7 30 accuracy 7 P6021 Instruction Manual 43 Index bandwidth 7 continuous current maximum 9 DC saturation maximum 0 input voltage maximum insertion impedance 0 pulse current maximum sensitivity 7 signal delay 10 tilt 10 environmental specifications 11 altitude 8 temperature amp equipment for calibration 5 F ferrite core 2 frequency derating 9 G ground clips using 2 ground lead 6 inch 3 grounding the probe 3 5 H high frequency response 3 25 impedance 5 2 of oscilloscope 1 12 probe 5 impedance matching network 2 input voltage maximum insertion impedance 5 0 instruction manual 3 interference minimizing 5 6 12 L loading effect minimizing 5 low frequency response 22 lubricating the probe 26 magnetic shielding 6 maximum continuous current 8 44 P6021 Instruction Manual Index maximum D
45. vailable and to give you the benefit of the latest improvements Therefore when ordering parts it 1s important to include the following information in your order Part number Instrument type or model number Instrument serial number Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number Change information if any is located at the rear of this manual Using the Replaceable Mechanical Parts List The tabular information in the Replaceable Mechanical Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts The following table describes the content of each column in the parts list P6021 Instruction Manual 37 Replaceable Mechanical Parts Parts list column descriptions 1 Figure amp index number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix 3and4 Serial number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entry indicates the part is good for all seri
46. ve calibrator frequency to 50 kHz and 5 Vp p output Adjust the sine wave amplitude for a 50 mV signal 5 divisions Use the peak to peak measurement function and averaging 16 or greater for measurements You can increase the vertical resolution by fine adjusting the volts div to obtain nearly 8 divisions of deflection Increase the sine wave generator frequency until the signal amplitude is 35 4 mV Adjust the oscilloscope time division as necessary Check that the frequency of the sine wave generator is 260 MHz on the oscilloscope display Reset the sine wave generator frequency to 50 kHz Reset the oscilloscope horizontal scale to 10 Us div Decrease the amplitude of the sine wave generator output until the oscillo scope display is one division tall Set the oscilloscope vertical deflection to 2 mV div Set the termination sensitivity to 10 mA mV Adjust the sine wave amplitude for a 10 signal 5 divisions Use the peak to peak measurement function and averaging 16 or greater for measurements Increase the sine wave generator frequency until the signal amplitude is 7 07 mV Adjust the oscilloscope time division as necessary Check that the sine wave generator frequency is 260 MHz When you are done disconnect all test equipment and replace the termination COVer 29 Service Information Maintenance A Cleaning Disassembling the Probe A 26 The information in this section will help you m
47. void personal injury and damage to the probe remove the probe from any signal source before attempting to adjust or service the probe This probe should be serviced only by qualified service personnel Do not service electrical equipment alone If you must service or adjust equipment that is attached to a signal or power source do so only when another person capable of rendering first aid and resuscitation is present This section provides procedures to check the performance of the P6021 or to calibrate it These procedures require the equipment listed in Table 7 Specifica tions given are the minimum necessary for accuracy If equipment is substituted it must meet or exceed the specifications of the recommended equipment Test equipment is assumed to be correctly calibrated and operating within the given specifications Also if equipment is substituted control settings or equipment setup may need to be altered For detailed operating instructions for the test equipment refer to the instruction manual for each unit To ensure measurement accuracy check the performance of the probe and termination whenever you begin using them with a different oscilloscope input especially when you have changed input capacitance Recalibrate the probe 1f necessary The recommended calibration interval of the probe and termination is every twelve months Before calibrating the probe thoroughly inspect and clean it as described in the section entitle
48. was demonstrated to the following specifications as listed in the Official ournal of the European Communities Low Voltage Directive 73 23 EEC as amended by 93 68 EEC EN 61010 1 A2 Part 1 General Requirements Safety requirements for electrical equipment for measurement control and laboratory test EN 61010 2 032 1995 Part 2 032 Particular requirements for hand held current clamps for electrical measurements and test Listed UL1244 Third Edition Electrical and electronic measuring and test equipment P6021 Instruction Manual 9 Service Information Table 4 Certifications and compliances Cont Installation Category Descriptions Terminals on this product may have different installation category designations The installation categories are CAT III CAT CAT I Pollution Degree 2 Typical Characteristics Distribution level mains usually permanently connected Equipment at this level is typically in a fixed industrial location Local level mains wall sockets Equipment at this level includes appliances portable tools and similar products Equipment is usually cord connected Secondary signal level or battery operated circuits of electronic equipment Do not operate in environments where conductive pollutants may be present This section lists the various typical characteristics that describe the P6021 Current Probe Included are typical electrical and mechanical characteristics Typical characteris
49. with termination This section describes both attaching the probe to an oscilloscope and using the standard accessories with the probe To ensure the best performance from your probe and oscilloscope measurement system check that the probe and oscilloscope are appropriately matched The oscilloscope inputs should use BNC connectors and have an impedance of 1 9 Figure 1 shows the probe and various parts referred to in this manual Operator Information Attaching the Probe and Termination to an Oscilloscope A 6 Ground Lead Figure 1 The P6021 Probe and termination Attach the probe to the termination as shown in Figure 1 An alligator style ground clip is supplied to improve EMI rejection at high frequencies 2 MHz and above Snap the ground lead to the probe transformer post and attach the alligator clip directly to RF ground This will reduce ringing and help bypass capacitively coupled RF currents that can flow into the probe cable WARNING To avoid injury or equipment damage remove power from an uninsulated wire before clamping the current probe around it When the probe slides are open the exposed ferrite core pieces are not insulated Also never disconnect the probe from the termination when the probe is connected to a live conductor To avoid damaging the probe do not disconnect the probe termination and leave the P6021 clamped around the conductor when measuring high currents Leaving the probe cable u
Download Pdf Manuals
Related Search