Operating Instructions
Contents
1. A2R34 Figure 10 P6022 Termination Component Location P6022 Instruction Manual 31 Mfr Code Manufacturer Address City State Zip Code TK1727 PHILIPS NEDERLAND BV POSTBUS 90050 5600 PB EINDHOVEN THE AFD ELONCO NETHERLANDS 0JRO3 ZMAN MAGNETICS INC 7633 S 180th KENT WA 98032 04222 AVX CERAMICS 19TH AVE SOUTH MYRTLE BEACH SC 29577 DIV OF AVX CORP P O BOX 867 32997 BOURNS INC 1200 COLUMBIA AVE RIVERSIDE CA 92507 2114 TRIMPOT DIV 52763 STETCO INC 3344 SCHIERHORN FRANKLIN PARK IL 60131 57668 ROHM CORP 8 WHATNEY IRVINE CA 92713 PO BOX 19515 59660 TUSONIX INC 7741 N BUSINESS PARK DR TUCSON AZ 85740 7144 PO BOX 37144 79727 C W INDUSTRIES 130 JAMES WAY SOUTHAMPTON 18966 3818 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON OR 97077 0001 PO BOX 500 91637 DALE ELECTRONICS INC 2064 12TH AVE COLUMBUS NE 68601 3632 PO BOX 609 32 Replaceable Electrical Parts CROSS INDEX CODE NUMBER TO MANUFACTURER Parts Ordering Information Using the Replaceable Parts List P6022 Instruction Manual Replaceable Mechanical Parts This section contains a list of the mechanical parts that are replaceable for the P6022 Use this list to identify and order replacement parts Replacement parts are available from or through your local Tektronix Inc service center or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and2. 5 Increasing Probe Sensitivity 5 Probe Shielding 6 Dr 6 Service Information Warranted Characteristics 7 Typical Characteristics 11 Circuit Description 12 Current Probe el e RR RR ar eae 12 Termination do ed Mace 12 Performance Verification 14 Adjustment Procedures 16 Preparation 2 16 Adjust Aberrations 17 Check Sensitivity 19 Check Low Frequency Response 20 Check High Frequency Response 21 Maintenance 22 Cleaning y vee Sees dae Pi ids 22 Disassembling the 22 Repairing the Probe 24 Repairing the Termination 24 P6022 Instruction Manual i Replaceable Electrical Parts Parts Ordering Information Using the Replaceable Parts List Replaceable Mechanical Parts Index Parts Ordering Information Using the Replaceable Parts List 27 27 33 33 Contents Injury Precautions General Safety Summary
3. To replace the circuit board follow these steps 0 Step 1 Remove the plastic snap on covers from the front and back of the termination L Step 2 Using a heat sink unsolder the leads from the connectors Step 3 Unscrew the two screws from the back of the circuit board Step 4 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 Step 5 Replace the circuit board by reversing the above procedure Step 6 Align the switch with the slider the front cover and replace the front cover 25 26 Service Information Parts Ordering Information Using the Replaceable Parts List P6022 Instruction Manual Replaceable Electrical Parts Replacement parts are available from or through your local Tektronix Inc service center or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If a part you order has been replaced with a different or improved part your local Tektronix service center or representative will contact you concerning any change
4. Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it Only qualified personnel should perform service procedures Avoid Electric Overload To avoid injury or fire hazard do not apply potential to any input including the common inputs that varies from ground by more than the maximum rating for that input Do Not Operate Without Covers To avoid electric shock or fire hazard do not operate this product with covers or panels removed Do Not Operate in Wet Damp Conditions To avoid electric shock do not operate this product in wet or damp condi tions Do Not Operate in an Explosive Atmosphere To avoid injury or fire hazard do not operate this product in an explosive atmosphere Product Damage Precautions P6022 Instruction Manual Do Not Operate with Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Immerse in Liquids Clean the probe using only a damp cloth Refer to cleaning instructions iii Safety Terms and Symbols Terms in This Manual These terms may appear in this manual Warning statements identify conditions or practices that could result in injury or loss of life 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
5. MHz Table 6 Mechanical Characteristics Characteristic Information Probe cable length 5 ft or 9 ft 1 5mor2 75m Net weight Probe and 5 foot cable 2 5 02 71 Probe and 9 foot cable 3 2 2 93 gm Termination 1 7 2 48 gm Termination L 3 47 88 mm W 1 10 28 mm H 0 86 22 mm Probe Body L 6 0 152 mm W 0 4 10 mm H 0 6 15mm Maximum Conductor Diameter 0 141 3 58 mm P6022 Instruction Manual 11 Circuit Description 12 This section describes the circuits in the P6022 current probe and termina tion For the schematic diagram of the probe and termination see Figure 4 on page 13 Current Probe The P6022 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 wind ings in the secondary assure a fast step response The circuitry between the transformer and the coaxial cable corrects any differences in level between the pulses induced in the paralleled windings of the secondary and matches the balanced probe winding to th
6. 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 DANGER Protective ATTENTION Double High Volt Ground Earth Refer to Manual Insulated age Terminal iv Safety P6022 Instruction Manual P6022 Current Probe Service Safety Summary 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 anoth er person capable of rendering first aid and resuscitation is present Safety Description Installation P6022 Instruction Manual Operator Information Thank you for choosing a Tektronix current probe This manual describes the P6022 current probe with passive termination and provides information about making measurements with the probe The P6022 current probe converts an alternating current waveform to a voltage that can be displayed and measured on an oscilloscope display It provides accurate current measurements over a wide range of frequencies and allows you to measure current without breaking the circuit The P6022 probe is compatible with general purpose osci
7. cur Refer to Figure 3 for frequency derating rent curves 1 mA mV 6 Ap p sine wave between 10 kHz and 10 Mhz 10 mA mV 6 Ap p sine wave between kHz and 10 MHz Refer to Figure 3 for frequency derating curves Maximum pulse current 100 A peak not to exceed 9 A us or 2 Arms s product greater than 9 A us reduces probe output to zero due to core saturation Maximum Working 300 or I and 600 Input Voltage limited to 10 ms and lt 25 duty factor uninsulated conductors Service Information 100 20 10 AMPS P P 0 1 100 Hz 1 kHz 10 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 was demonstrated to the following specifications as listed in the Official Journal 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 equip ment for measurement control and lab oratory test EN 61010 2 032 1995 Part 2 032 Particular requirements for hand held current clamps for electrical measure ments and test P6022 Instruc
8. 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 wish 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 Droop 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 Tf where T pulse duration f lower 3 dB frequency of probe Operator Information Service Information Warranted This section lists the various warranted characteristics that describe the Characteristics characteristics P6022 Current Probe Included are warranted electrical and environmental Warrant
9. 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 isopro panol or ethyl alcohol fotocol or ethanol To prevent damage to probe materials avoid using chemicals that contain benzene benzine toluene xylene acetone or similar solvents Do not immerse the probe in liquids or use abrasive cleaners Do not lubricate the jaws mating surfaces Any lubricant between the core pieces should be removed with a recommended solvent Do not use a petroleum based lubricant on the plastic If the plastic slide assembly requires lubrication use a silicone based grease sparingly 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 Disassembling the Probe Use the following procedure to disassemble the probe for cleaning or repair You will need a low power soldering iron with a fine point Work over a smooth clean surface so that you can easily find any small pieces that may drop Refer to Figure 8 Service Information To avoid degrading the probe s performance do not touch the polished mating surfaces of the transformer after cleaning Upper half of Probe Body Ball Bearing Detent oe Slide Switch 9 8 Spring
10. in the part number Change information if any is located at the rear of this manual The tabular information in the Replaceable Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find the all the information you need for ordering replacement parts Item Names In the Replaceable Parts List an Item Name is separated from the descrip tion by a colon Because of space limitations an Item Name may some times appear as incomplete For further Item Name identification U S Federal Cataloging Handbook H6 1 can be used where possible Abbreviations Abbreviations conform to American National Standards Institute ANSI standard Y1 1 List of Assemblies A list of assemblies can be found at the beginning of the electrical parts list The assemblies are listed in numerical order When the complete compo nent number of a part is known this list will identify the assembly in which the part is located 27 Cross Index Mfr Code Number to Manufacturer The Mfg Code Number to Manufacturer Cross Index for the electrical parts list is located immediately after this page The cross index provides codes names and addresses of manufacturers of components listed in the electri cal parts list Component Number column 1 of the parts list Example a component number A23R1234 _A23 R1234 an Assembly number Circuit number Read Resistor 1234 of Assembly 23 Example b comp
11. passes through it For example if the conductor loops through the probe twice a two turn primary winding the secondary current is doubled because the ratio of current in a transformer is inversely proportional to the turns ratio For example suppose you set the termination sensitivity to 1 mA mV and the oscilloscope vertical scale to 10 mV division Ordinarily this would result in the equivalent of 1 X 10 or 10 mA division However if the conductor is looped through the probe twice the vertical scale is divided by two result ing in the equivalent of 5 mA division Looping the conductor twice effectively doubles vertical sensitivity however impedance from the probe winding is also reflected into the circuit being measured This impedance varies as the square of the number of loops This additional impedance affects signals this effect is particularly important when you are measuring high frequency current waveforms or waveforms with fast rise times Probe Shielding The P6022 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 oscilloscope try to measure the conductor current at a point farther from the location of the magnetic
12. registered trademark of the Fiske Brothers Refining 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 responsible 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 dam
13. step for aberrations lt 10 p p After the first 25 nanoseconds check for aberrations lt 2 p p Step 10 If required adjust C28 and C29 in the termination and then R10 through the hole in the probe handle to bring the probe into compliance with step 9 Step 11 Set the termination sensitivity control to the 10 tion Step 12 Set the oscilloscope vertical deflection to 1 mV division Step 13 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 Step 14 Check again to make sure that the aberrations are within the specifications described in Step 9 Repeat any adjustments required NOTE Aberration characteristics do not include the effects of the test oscilloscope R10 TEKTRONIX 4 P6022 CURRENT PROBE 50 TURNS Figure 6 Location of Probe Adjustments Service Information 29 28 Figure 7 Location of Termination Adjustments Check Sensitivity Step 1 Set the oscilloscope time division to 10 us 0 Step 2 Set the oscilloscope vertical deflection to 10 mV div Step 3 Check that the P6022 termination sensitivity is set to 1 mA mV Step 4 Disconnect the P6022 termination from the oscilloscope 0 Step 5 Connect a 50 cable with the 10X and 5X attenuators termi nated thr
14. 0009 214058100 3 351 0174 00 1 SLIDE TEST PROD ACETAL 80009 351017400 4 214 0735 00 1 SPRING HLCPS 0 12 OD X 1 5 8X345 ORDER BY DESC ENDS MUW 5 214 1110 00 1 RETAINER SPRING CURRENT PROBE 80009 214111000 1 TRANSFORMER CUR SEE A1T1 REPL 7 1 CIRCUIT BD ASSY PROBE SEE A1 REPL 8 204 0362 02 1 BODY ASSY PROBE LOWER 80009 204036202 9 175 1027 00 1 CABLE ASSY RF 62 5 OHM COAX 60 0 L 80009 175102700 STANDARD ONLY 175 1027 01 1 CABLE ASSY RF 62 5 OHM 108 0 L 80009 175102701 OPTION 03 ONLY 10 200 0852 06 1 COV COAX TERMN W SHLD amp KNOB 80009 200085206 11 426 0423 03 1 FRAME COAX TERM 80009 426042303 12 131 0106 02 1 CONN RF JACK BNC 50 OHM FEMALE SLDR 24931 28 8178 1 CUP FRONT PNL 0 520 MLG X 0 403 TAIL 0 04 SLDR CUP0 380 D 1 FLAT 13 131 0602 00 1 CONN RF PLUG BNC 50 OHM MALE STR 24931 28 104 1 FEEDTHRU FRONT PNL 1 555 L 0 285 L 0 375 32 THD 0 5 L 22 AWG TAB 0 384 DIA MTG 14 361 0219 00 2 SPACER SLEEVE 0 06 X 0 093 ID BRS 80009 361021900 15 1 TERMN COAXIAL SEE A2 REPL ATTACHING PARTS 16 211 0001 00 2 5 2 56 X 0 25 PNH STL 0435 ORDER BY DESC END ATTACHING PARTS 17 200 0851 03 1 COV COAX TERMN 80009 200085103 STANDARD ACCESSORIES 18 196 3120 01 1 LEAD ELEC PROBE GROUND SDI 23 AWG 6 0 L 80009 196312001 070 0948 03 1 MANUAL TECH INSTRUCTION P6022 80009 070094803 34 Replaceable Mechanical Parts P6022 In
15. Instruction Manual Tektronix 6022 Current Probe 070 0948 03 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 Instrument Serial Numbers Each instrument manufactured by Tektronix has a serial number on a panel insert or tag or stamped on the chassis The first letter in the serial number designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufacture is identified as follows 010000 Tektronix Inc Beaverton Oregon USA E200000 Tektronix United Kingdom Ltd London J300000 Sony Tektronix Japan H700000 Tektronix Holland NV Heerenveen The Netherlands Instruments manufactured for Tektronix by external vendors outside the United States are assigned a two digit alpha code to identify the country of manufacture e g JP for Japan HK for Hong Kong IL for Israel etc Tektronix Inc PO Box 500 Beaverton OR 97077 Printed in U S A Copyright Tektronix Inc 1993 All rights reserved Tektronix products are covered by U S and foreign patents issued and pending The following are registered trademarks TEKTRONIX TEK TEKPROBE and SCOPE MOBILE LUBRIPLATE is a
16. R DI 5 25PF 100V CAPVAR PLASTIC 1 1 3 5PF 100V COIL RF FIXED 17 5UH XFMR TOROID FIXED 160NH COIL RF FIXED 64UH RES FXD FILM 13 7 OHM 1 0 125W TC TO RES FXD CMPSN 200 OHM 5 0 125W RES FXD FILM 50 OHM 0 25 0 125W TC T9 RES FXD FILM 1 50K OHM 1 0 125W TC TO RES FXD FILM 63 4 OHM 1 125W TC TO RES FXD FILM 10 2 OHM 1 0 125W TC TO RES FXD FILM 10 5 OHM 1 0 125W RES FXD CMPSN 27 5 0 125 RES FXD CMPSN 30 5 0 125 RES FXD CMPSN 24 5 0 125 SWITCH SLIDE DPDT 0 5A 125VAC Mfr Code 80009 80009 80009 04222 OJRO3 32997 80009 OJRO3 80009 80009 52763 59660 59660 80009 OJRO3 OJRO3 OJRO3 91637 TK1727 57668 91637 91637 91637 91637 TK1727 TK1727 TK1727 79727 Mfr Part No 670111200 011010600 670111200 SR155A7RODAA 120 0285 00 3329H G48 201 120060300 120 0286 00 011010600 283006600 2RDPZZ007 518 000 5 25 518 000 5 25 281018600 108 0409 01 108 0523 00 108 0395 00 CMF55116G13R70F SFR16 2322 180 CRB14 CZE 50 0 CMF55116G15000F CMF55116G63RA40F CMF55116G10R20F CMF55116G10R50F SFR16 2322 180 SFR16 2322 180 SFR16 2322 180 GF126 0028 Replaceable Electrical Parts Figure 9 P6022 Probe Component Location 2126 A2C26 2 37 A2SW30 A2C21 A2R33 LL A2R37 IS A2L28 A2R29 A2C28 Pay 2133 2 29 2836 A2R35
17. Retainer older Desolder here Top half of Strain Relief Boot Transformer Bottom half of Transformer Bottom Housing Figure 8 Disassembling the Probe Step 1 Hold the probe horizontally with the slide switch up Step 2 Pull the strain relief boot back over the cable Lightly rock the strain relief boot from side to side as you pull back on it Step 3 Be careful there is a spring loaded retainer and a small ball bearing you are about to expose Step 4 Slowly lift the upper half of the probe body slightly at the cable end and push the assembly forward over the nose and off D OO Step 5 Remove the small ball bearing from the detent in the slide switch P6022 Instruction Manual 23 24 L Step 6 Lift the back of the return spring retainer out of the holder L Step 7 Remove the slide switch spring retainer and the top of the transformer as a unit Notice the orientation of the movable portion of the transformer in the slide When applying heat to the soldered connection use only enough heat for as long as necessary Excess heat may cause irreparable damage to the circuit board Step 8 Desolder the ground connection on the circuit board See Figure 8 Step 9 Lift the circuit board transformer and cable out of the probe body as a unit Be careful the cable connection to the board is fragile and may break if not handled gently L Step 10 To reassemble the probe reverse the p
18. Sine Wave Generator Tektronix Part No 011 0049 01 Tektronix Part No 011 0060 02 Tektronix Part No 011 0059 02 Tektronix Part No 012 0482 00 Tektronix Part No 017 0064 00 Tektronix Part No 067 0559 00 P6022 Instruction Manual 15 Adjustment Procedures 16 Preparation 1 Insert a small screwdriver between the cover and the termination near the part number and gently pry up the top cover only from the P6022 termination by twisting the screwdriver Leave the bottom cover on as it must remain in place whenever the termination is in use Set up the oscilloscope as described below Vertical mode Horizontal mode Trigger source Trigger coupling Trigger mode Trigger slope Trigger level Ch 1 coupling Volts division Time division Averages CH 1 Main CH 1 AC Peak to peak auto Positive As required DC 2mV 5ns 5 to 10 NOTE When using a digitizing oscilloscope set averaging on to in crease resolution Set up the calibration generator as described below Output Repetition rate 1 Vp p 210 kHz Set up the function generator as described below Frequency Offset Amplitude Frequency vernier Multiplier Function 5 Off 5096 Cal 104 Sine wave Set up the sine wave generator as described below Frequency REF 50 kHz Service Information P6022 Instruction Manual Adjust Aberrations To avoid damaging the probe do not disconnect the probe ter mination when m
19. age 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 VENDORS 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 Contents General Safety Summary iii Service Safety Summary Operator Information Descriptioni ecreis cee eser ener ea tena tek eed ae 1 Installation 1 Attaching the Probe and Termination to an Oscilloscope 2 Using the Standard Accessories 3 Operating Considerations 4 Features and Controls 4 Insertion Impedance 5 Minimizing Loading Effect
20. chematic Diagram P6022 Instruction Manual Performance Verification 14 This probe should be serviced only by qualified service personnel To avoid personal injury and damage to the probe remove the probe from any signal source before attempting to adjust or service the probe 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 P6022 or to calibrate it These procedures require the equipment listed in Table 7 Specifications given are the minimum necessary for accuracy If equipment is substituted it must meet or exceed the specifications of the recom mended 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 equip ment 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 if necessary Also check the calibration of the probe and termination every 1000 hours of operation or every six mo
21. cope display 0 Step 8 Increase the sine wave generator frequency until the signal amplitude is 4 2 divisions Adjust the oscilloscope timebase as neces sary L Step 9 Check that the frequency of the sine wave generator is 2120 MHz on the oscilloscope display If you are using an oscilloscope with a bandwidth less than 200 MHz the response may be 120 MHz Step 10 Resetthe sine wave generator frequency to 50 kHz L Step 11 Reset oscilloscope time per division to 10 us 0 Step 12 Decrease the amplitude of the sine wave generator output until the amplitude is one division tall Step 13 Set the oscilloscope vertical deflection to 10 mV division 0 Step 14 Set the termination sensitivity to 1 mA mV L Step 15 Adjust the amplitude of the sine wave generator output until it is six divisions tall on the oscilloscope display 0 Step 16 Increase the sine wave generator frequency until the signal amplitude is 4 2 divisions Adjust the oscilloscope timebase as neces sary 0 Step 17 Check that the sine wave generator frequency is gt 100 MHz If you are using an oscilloscope with a bandwidth lt 200 MHz re sponse may be lt 100 MHz When you are done disconnect all test equipment and replace the termina tion cover 21 Maintenance 22 The information in this section will help you maintain your probe for a long service life Cleaning To clean the probe body use a soft cloth dampened
22. e cable As indicated on the probe body the turns ratio of the P6022 is 50 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 from the shield when you open the sliding portion of the probe to connect or remove it from a conductor Termination The P6022 termination consists of a 62 5 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 1 mA mV position a 10 mA current signal in the conductor under test induces a 10 mV signal at the output of the termination This assumes that the termination is connected to a 1 input oscilloscope When the sensitivity control is in the 10 mA mV position 10 mA current signal is attenuated to induce a 1 mV signal at the output of the termination Service Information MECHANICALLY LINKED SPRING RETURN TO NORMALLY CLOSED POSITION FERRITE TRANSFORMERS CORE 25 10 SHIELD P6022 PROBE P6022 PASSIVE TERMINATION Figure 4 P6022 S
23. easuring high currents Leaving the probe cable unterminated can cause a high voltage to develop in the secondary winding which may damage the current probe transformer 0 Step 1 Connect the current probe calibration fixture to the PG506A calibration generator 1 0 output using the appropriate adapter C Step 2 Set the calibration generator to Fast Rise Step 3 Connect the P6022 cable BNC connector to the termination 0 Step 4 Connect the P6022 termination to the oscilloscope Ch 1 input Step 5 Set the P6022 termination sensitivity to 1 mA mV L Step 6 Pulling back on the probe slide switch connect the probe to the current probe calibration fixture Figure 5 Connecting the Probe to the Calibration Fixture 17 OO 0 0 Ensure that current is flowing the correct direction the minus sign should be near the outside and the plus sign should be near the con nectors as shown in Figure 5 The figure shows the probe slide 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 Step 7 Turn on the test equipment Step 8 Adjust the oscilloscope position triggering intensity and cal ibration generator amplitude controls until the signal is centered on the display across five vertical divisions Step 9 Check the first 25 nanoseconds of
24. ed characteristics are described in terms of quantifiable performance limits which are warranted The electrical characteristics listed in Table 1 apply under the following conditions m The probe and instrument with which it is used must have been calibrated at an ambient temperature of between 20 C and 30 C m The probe and instrument must be in an environment whose limits are described in Table 2 Table 1 Warranted Electrical Characteristics Characteristic Information Sensitivity Midband Accuracy Bandwidth with BW 200 MHZ oscilloscope 1 mA mV 10 mA mV Step Response Aberrations probe and termination at either sensitivity setting 1 mA or 10 mA for each mV at oscillo scope input selected by termination sensitivity control 3 8 5 kHz to 100 MHz 935 Hz to 120 MHz Because the oscilloscope input capacitance becomes a part of the termination network the step response will vary with different oscilloscopes lt 10 peak to peak within 25 ns of step lt 2 peak to peak thereafter P6022 Instruction Manual Table 2 Warranted Environmental Characteristics Characteristic Information Temperature range Operating 0 C to 50 C Nonoperating 40 C to 65 C Altitude Operating 2 000 m 6 561 ft 300 V CAT I To 4 572 m 15 000 ft 150 V CAT II Nonoperating To 15 240 m 50 000 ft Table 3 Maximum Ratings Characteristic Information Maximum continuous CW
25. ents Leaving the probe cable unterminated can cause a high voltage to develop in the secondary winding which may damage the current probe transformer When the probe slides are open the exposed ferrite core pieces are not insulated To avoid injury or equipment damage remove power from an uninsulated wire before clamping the current probe around it Also never disconnect the probe from the termination when the probe is connected to a live conductor Operator Information w P6022 Instruction Manual Using the Standard Accessories Your P6022 is shipped with the following accessories m This instruction manual Read these instructions to familiarize your self with the features specifications and operation of the P6022 current probe m 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 you are measur ing 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 Operating The information in this section will help you make the most effective use of Considerations your P6022 probe Features and Controls m Sensitivity Control The P6022 termination has a control that allows you to select probe sensit
26. function generator frequency is 8 5 kHz 0 Step 9 Reset the function generator frequency to 50 kHz C Step 10 Reset the oscilloscope time division to 10 us Step 11 Set the termination sensitivity to 10 mA mV Step 12 Set the oscilloscope vertical deflection to 1 mV division L Step 13 Adjust the amplitude of the function generator output until it is six divisions tall on the oscilloscope display L Step 14 Lower the function generator frequency until the signal ampli tude is 4 2 divisions Adjust the oscilloscope timebase as necessary 0 Step 15 Check that the function generator frequency is 935 Hz NOTE Dirty or worn mating surfaces between the transformer and the lid degrade the low frequency response Clean them if necessary See page 19 for cleaning instructions Service Information P6022 Instruction Manual Check High Frequency Response Step 1 Connect the current probe calibration fixture to the SG 503 Sine Wave Generator output using the appropriate adapters 0 Step 2 Connect the probe to the current probe calibration fixture Step 3 Ensure that the termination sensitivity is set to 10 mA mV 0 Step 4 Set the oscilloscope vertical deflection to 1 mV division C Step 5 Set the oscilloscope time per division to 10 us C Step 6 Set the sine wave generator frequency to 50 kHz L Step 7 Adjust the amplitude of the sine wave generator output until it is six divisions tall on the oscillos
27. gram 13 sensitivity 19 checking 19 specification 7 sensitivity control 4 7 12 sensitivity setting 4 7 12 service safety warnings v 14 shielding 6 12 signal delay 11 sliding switch 4 7 12 soldering procedures for 24 specifications 7 electrical 7 environmental 7 1 physical 11 T termination 1 2 adjustments 17 19 circuit description 12 13 repair 24 26 replacing circuit board 25 replacing connectors 24 test equipment 15 function generator settings 16 oscilloscope settings 16 pulse generator settings 16 tilt 11 transformer 12 maintenance 22 matching 24 primary 4 replacing 24 secondary 4 turns ratio 12 V vertical scale settings with oscillo Scope 4 vertical sensitivity 4 12 increasing 5 voltage maximum 8 W winding 5 12 Index
28. ional 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 To prevent shock when measuring uninsulated conductors keep your hands and fingers behind the ridge on the probe head 4 Operator Information P6022 Instruction Manual Insertion Impedance 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 additional impedance introduced by the P6022 0 6 uH 0 2 nH 025 0 Figure 2 Insertion Impedance of the P6022 Minimizing Loading Effect 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 minimizes noise or stray signal interference Increasing Probe Sensitivity You can increase the current sensitivity of the probe by increasing the num ber of times a conductor
29. ivity The switch has two positions 1 mA mV and 10 mA mV When the control is in the 1 mA mV position the oscillo scope displays 1 mV for every 1 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 Sensitivity Control 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 m Probe Slide Switch The slide switch on the probe has three posi tions 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 closed positions Open Closed 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 convention al current flow If you place the probe on the conductor so that the arrow on the probe matches convent
30. lloscopes having a 1 input impedance The P6022 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 P6022 probe comes with a 5 foot cable and termination The following option is also available Option 03 9 foot cable 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 oscilloscope measurement system check that the probe and oscilloscope are appropriately matched The oscilloscope inputs should use BNC connectors and have an imped ance of 1 MQ Figure 1 shows the probe and various parts referred to in this manual Termination 6 Ground Lead Figure 1 The P6022 Probe and Termination Attaching the Probe and Termination to an Oscilloscope Attach the probe to the termination as shown in Figure 1 A 6 inch ground lead is supplied to improve EMI rejection at high frequen cies 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 which can flow into the probe cable To avoid damaging the probe do not disconnect the probe ter mination and leave the P6022 clamped around the conductor when measuring high curr
31. n item name may sometimes appear as incomplete For further item name identification the U S Federal Catalog handbook H6 1 can be utilized where possible Mfr Code column 6 of the parts list Indicates the code number of the actual manufacturer of the part Code to name and address cross reference can be found immediately after this page Mfr Part No column 7 of the parts list Indicates actual manufacturer s part number 29 Component Tektronix Number Al A2 A1 A1C10 A1L10 A1R10 A1T1 A1T14 A2 2 21 2 26 2 28 2 29 2 37 2126 2128 A2L33 A2R26 A2R28 A2R29 A2R31 A2R33 A2R34 A2R35 A2R36 A2R37 A2R39 A2SW30 30 Part No 670 1112 00 011 0106 00 670 1112 00 283 0157 00 120 0285 00 311 0605 00 120 0603 00 120 0286 00 011 0106 00 283 0066 00 281 0629 00 281 0123 00 281 0123 00 281 0186 00 108 0409 01 108 0523 00 108 0395 00 321 0014 00 317 0201 00 321 0751 06 321 0210 00 321 0078 00 321 0002 00 321 0003 00 317 0270 00 317 0300 00 317 0240 00 260 0723 00 Serial No Effective Dscont Name amp Description CIRCUIT BD ASSY PROBE TERMN COAXIAL P6022 CIRCUIT BD ASSY PROBE CAPFXD CER DI 7PF 596 50V XFMR TOROID 4 TURNS SINGLE RES VAR NONWW TRMR 200 OHM 0 5W TRANSFORMER CUR XFMR TOROID 2 TURNS BIFILAR 3S76 TERMN COAXIAL P6022 CAPFXD CER DI 2 5PF 0 5PF 200V CAPFXD CER DI 33PF 5 600V CAPVAR CER DI 5 25PF 100V CAPVAR CE
32. nths if they have been used infrequently Before calibrating the probe inspect and clean it thoroughly as described in the section entitled 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 com pleting 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 Service Information Table 7 Equipment List Description Recommended Equipment Oscilloscope Bandwidth Vertical sensitivity Calibration generator Fast rise time Function generator low frequency oscillator Frequency range Output amplitude Amplitude accuracy Sine wave generator Frequency range Output amplitude Amplitude accuracy Termination feedthrough BNC Attenuator BNC Attenuators BNC Coaxial cable Adapter Fixture DC to 200 MHz 1 mV div x 1 ns 1 Vpp into 50 O 935 Hz to 50 kHz 3 Vpp into 50 O 3 of reference at 50 kHz 250 kHz to 150 MHz 3 Vpp into 50 O 1 from 250 kHz to 150 MHz 500 5X 500 10X 500 36 inch 50 precision BNC male to GR Current probe calibration TDS 360 Tektronix PG506A Calibration Generator Tektronix FG 501A Function Gen erator Tektronix SG 503 Leveled
33. onent number A23A2R1234 A23 A2 R1234 p 3 Assembly number Subassembly number Circuit number Read Resistor 1234 of Subassembly 2 of Assembly 23 The circuit component s number appears on the diagrams and circuit board illustrations Each diagram and circuit board illustration is clearly marked with the assembly number Assembly numbers are also marked on the mechanical exploded views located in the mechanical parts list The compo nent number is obtained by adding the assembly number prefix to the circuit number The electrical parts list is divided and arranged by assemblies in numerical sequence e g assembly A1 with its subassemblies and parts precedes assembly A2 with its subassemblies and parts Chassis mounted parts have no assembly number prefix and are located at the end of the electrical parts list Tektronix Part No column 2 of the parts list Indicates part number to be used when ordering replacement part from Tektronix Serial No columns 3 amp 4 of the parts list Column three 3 indicates the serial number at which the part was first used Column four 4 indicates the serial number at which the part was removed No serial number entered indicates part is good for all serial numbers Replaceable Electrical Parts P6022 Instruction Manual Name amp Description column five of the parts list In the parts list an item name is separated from the description by a colon Because of space limitations a
34. ough 50 to the oscilloscope Step 6 Connect the other end of the cable to the FG 501A function generator Step 7 Adjust the amplitude of the function generator output until it is six divisions tall on the oscilloscope display Step 8 Disconnect the cable and attenuators from the oscilloscope and function generator Step 9 Connect the P6022 probe and termination to the oscilloscope Step 10 Connect the calibration fixture to the output of the FG 501A function generator 0 OO Step 11 Check that the function generator output is still six divisions tall on the oscilloscope display 3 excluding attenuator error NOTE The attenuators you use should be calibrated so that you can determine their error P6022 Instruction Manual 19 Check Low Frequency Response Step 1 Connect the current probe calibration fixture to the FG 501A function generator output using the appropriate adapter 0 Step 2 Connect the probe to the current probe calibration fixture 0 Step 3 Set the termination sensitivity to 1 mA mV L Step 4 Set the function generator for a 50 kHz sine wave output L Step 5 Turn on the test equipment L Step 6 Adjust the amplitude of the function generator output until it is six divisions tall on the oscilloscope display L Step 7 Lower the function generator frequency until the signal ampli tude is 4 2 divisions Adjust the oscilloscope timebase as necessary Step 8 Check that the
35. rocedure 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 Repairing the Probe 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 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 Step 1 Insert a small screwdriver between the cover and the termina tion near the part number and gently pry up the plastic snap on cover from the termination C Step 2 Using a heat sink unsolder the leads from the defective con nector Service Information P6022 Instruction Manual 0 Step 3 Unscrew and remove the defective connector L Step 4 Replace the defective connector with the new one 0 Step 5 Screw and solder the new connector back in place L Step 6 Align the switch with the slider in the front cover and replace the front cover Replacing the Circuit Board
36. struction Manual Figure 11 P6022 Exploded View 35 CROSS INDEX MFR CODE NUMBER TO MANUFACTURER Mfr Code Manufacturer Address City State Zip Code 0435 LEWIS SCREW 4300 S RACINE AVE CHICAGO IL 60609 3320 24931 SPECIALTY CONNECTOR CO INC 2100 EARLYWOOD DR FRANKLIN IN 46131 PO BOX 547 8X345 NORTHWEST SPRING amp MFG CO 5858 WILLOW LANE LAKE OSWEGO OR 97034 5343 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON OR 97077 0001 PO BOX 500 36 Replaceable Mechanical Parts aberrations 17 19 accessories termination 7 2 accessories standard 3 6 6 inch ground lead 3 instruction manual 3 accuracy 7 adjusting the probe 78 adjusting the termination 78 attaching the probe 1 3 B bandwidth checking 20 21 specification 7 C13 18 22 19 25 19 cable 9 foot 7 calibrating the probe 14 15 Certifications 9 checking performance 14 circuit description 12 13 cleaning the probe 22 Compliances 9 continuous current maximum 8 current flow direction 4 current vs frequency derating 9 P6022 Instruction Manual D DC saturation maximum 77 direction of current flow 4 disassembling the probe 22 24 E electrical parts list 27 electrical specifications 7 accuracy 7 bandwidth 7 continuous current maximum 8 DC saturation maximum 77 input voltage maximum 8 insertion impedance 77 pulse current maximum 8 sensitivity 7 signal delay 77
37. tilt 11 environmental specifications 11 altitude 8 temperature 8 equipment for calibration 15 F ferrite core 12 frequency derating 9 G ground clips using 2 ground lead 6 inch 3 index grounding the probe 3 5 H high frequency response 3 27 impedance 5 12 of oscilloscope 7 12 probe 5 impedance matching network 72 input voltage maximum 8 insertion impedance 5 77 instruction manual 3 interference minimizing 5 6 12 L loading effect minimizing 5 low frequency response 20 lubricating the probe 22 M magnetic shielding 6 maximum continuous current 8 maximum DC saturation 77 maximum input voltage 8 maximum pulse current 8 37 mechanical parts list 33 O Option 03 7 options cable 9 foot 7 oscilloscope 7 impedance 7 input connectors 7 use with 1 3 parts list electrical 27 mechanical 33 physical specifications 77 cable length 77 weight 77 probe adjustments 17 19 calibration 14 15 circuit description 12 compatibility with oscilloscope 7 12 description 7 disassembly 22 24 impedance of 5 parts 2 repair 24 shielding 6 12 pulse current maximum 8 38 R R10 18 R12 18 R36 19 repairing probe 24 termination 24 26 replacing termination circuit board 25 termination connectors 24 transformer 24 5 safety operator information iii service information v 14 schematic dia
38. tion Manual 10 Table 4 Certifications Compliances Cont Installation Category Descriptions Terminals on this product may have different installation category designations The installation categories are CAT CAT Il CAT Pollution Degree 2 Distribution level mains usually perma nently connected Equipment at this level is typically in a fixed industrial loca tion Local level mains wall sockets Equip ment at this level includes appliances portable tools and similar products Equipment is usually cord connected Secondary signal level or battery oper ated circuits of electronic equipment Do not operate in environments where conductive pollutants may be present Service Information This section lists the various typical characteristics that describe the P6022 Characteristics Current Probe Included are typical electrical and mechanical characteris tics Typical characteristics are described in terms of typical or average perfor mance Typical characteristics are not warranted Table 5 Electrical Characteristics Characteristic Information Tilt 1 mA mV 4 or less within 1 us of step 10 mA mV 4 or less within 10 us of step Maximum DC without saturation 0 2A Signal delay 5 foot probe with Approximately 9 ns termination 9 foot probe with Approximately 15 8 ns termination Insertion impedance 0 03 or less at 1 MHz increasing to 0 2 or less at 120
39. to give you the benefit of the latest circuit improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If a part you order has been replaced with a different or improved part your local Tektronix service center or representative will contact you concerning any change in the part number Change information if any is located at the rear of this manual The tabular information in the Replaceable Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find the all the information you need for ordering replacement parts Item Names In the Replaceable Parts List an Item Name is separated from the descrip tion by a colon Because of space limitations an Item Name may some times appear as incomplete For further Item Name identification U S Federal Cataloging Handbook H6 1 can be used where possible Abbreviations Abbreviations conform to American National Standards Institute ANSI standard Y1 1 33 Fig amp Index Tektronix Serial No Mfr No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No 11 1 P6022 PROBE CURRENT 120 MHZ 100A 5FT W TERM 1 204 0360 01 1 BODY PROBE UPPER 80009 204036001 2 214 0581 00 1 BALL DETENT 0 062 DIA STEEL 8
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