Tektronix TCP202A Instruction Manual Download

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TCP202A
50 MHz, 15 A AC/DC Current Probe

ZZZ

Instruction Manual

Revision A

www.tektronix.com

071-3003-00

Summary of Contents for TCP202A

Page 1: ...x TCP202A 50 MHz 15 A AC DC Current Probe ZZZ Instruction Manual P071300300 071 3003 00...

Page 2: ......

Page 3: ...TCP202A 50 MHz 15 A AC DC Current Probe ZZZ Instruction Manual xx Revision A www tektronix com 071 3003 00...

Page 4: ...and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tek...

Page 5: ...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...

Page 6: ......

Page 7: ...s ix Environmental Considerations xii Preface xiii Documentation xiii Conventions Used in this Manual xiii Returning the Probe for Servicing xiv Key Features 1 Connecting the Probe 2 2 Degaussing the...

Page 8: ...ng a Probe with an Unpowered Conductor in the Jaws 27 Measuring Differential Current 28 Extending Current Range 30 Increasing Sensitivity 33 Common Mode Noise Magnetic Field Errors 34 Maximum Current...

Page 9: ...ment 50 DC Gain Accuracy 51 Rise Time and Bandwidth 54 Test Record 56 Adjustments 57 Equipment Required Setup 57 Adjustment Procedures 58 Maintenance 61 Troubleshooting 61 Cleaning 62 Index TCP202A Cu...

Page 10: ...Table of Contents iv TCP202A Current Probe Instruction Manual...

Page 11: ...cuit under test before connecting the probe input Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement instrument Gro...

Page 12: ...nditions Do not operate in an explosive atmosphere Keep product surfaces clean and dry Terms in this manual These terms may appear in this manual WARNING Warning statements identify conditions or prac...

Page 13: ...essible 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 The following symbol...

Page 14: ...able of rendering first aid and resuscitation is present Disconnect power To avoid electric shock switch off the instrument power then disconnect the power cord from the mains power Use care when serv...

Page 15: ...010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use EN 61010 2 032 2002 Particular requirements for handheld current clamps for electrical measurement an...

Page 16: ...for electrical equipment for measurement control and laboratory use IEC 61010 2 032 2002 Particular requirements for handheld current clamps for electrical measurement and test equipment Equipment Ty...

Page 17: ...t Temporary condensation occurs only when the product is out of service Polution Degree 3 Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation These are shel...

Page 18: ...vironment and to reduce the use of natural resources we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately...

Page 19: ...Operation Functional Check Operating Basics Specifications Performance Verification Read this Instruction Manual In depth oscilloscope operation user interface help GPIB commands Access the online hel...

Page 20: ...carton having inside dimensions at least one inch greater than the probe dimensions The box should have a carton test strength of at least 200 pounds 2 Put the probe into an antistatic bag or wrap it...

Page 21: ...nes proven Hall effect technology with the Tektronix TekProbe oscilloscope interface Key features include 50 MHz bandwidth 7 0 ns rise time AC DC Measurement capability 3 DC Accuracy typical One butto...

Page 22: ...loscopes with the TekProbe Interface The TCP202A current probe mates directly to oscilloscopes that feature the Tektronix TekProbe Interface 1 Align the tab on the probe connector with the slot on the...

Page 23: ...e adapter allows TekVPI interface oscilloscopes to recognize TekProbe interface probes and to supply the necessary power serial communication and offset control to the probe 1 Connect the TPA BNC adap...

Page 24: ...obe 1 Turn the probe connector counterclockwise 2 Pull the probe away from the adapter or instrument if directly connected To disconnect the adapter 3 Press down the latch button 4 Pull the adapter aw...

Page 25: ...n the side of the probe Quick Tip To maintain measurement accuracy degauss your probe in each of these cases After you turn on the measurement system and allow a 20 minute warm up period Before you co...

Page 26: ...e compensation box and at the probe head Compensation Box Controls Degauss Button To degauss the probe do the following 1 Disconnect the probe from the current source 2 Close and lock the slider 3 Pre...

Page 27: ...the balance control cannot completely remove the DC offset then degauss the probe NOTE If you cannot set the DC offset to zero with the thumb wheel a coarse balance adjustment is accessible through a...

Page 28: ...meter maximum conductor size WARNING To prevent probe damage do not force conductors larger than 5 mm 0 2 in diameter into the jaw 4 Safe handling zone keep fingers behind demarcations when taking mea...

Page 29: ...ot have enough range to zero the probe output The coarse balance adjustment is accessible through an opening on the underside of the probe head First set the thumb wheel to the midway point and then u...

Page 30: ...ss Do not insert conductors larger than 5 0 mm diameter into the probe jaw Damage to the probe may result To check that your probe functions correctly do the following 1 Connect the probe to any chann...

Page 31: ...Maintenance section of this manual for information on how to properly clean the probe head transformer surfaces 1 Check the oscilloscope display before connecting the probe to a conductor If there is...

Page 32: ...improve EMI rejection at high frequencies 1 Clip the ground lead to the ground post at the bottom of the probe head 2 Connect the alligator end of the clip to the circuit ground 3 Connect the probe t...

Page 33: ...ion Examples Application Examples This section explains ways to use your probe in common troubleshooting tasks and how to extend the use of your measurement system TCP202A Current Probe Instruction Ma...

Page 34: ...ely low output impedance connected to an inductor that has low resistance 1 Connect the inductor across the output terminals of the pulse generator 2 Maintain a constant voltage across the inductor 3...

Page 35: ...ined by the slope of the current ramp shown here 5 Calculate the inductance using the following formula where L is the inductance in henries E is the voltage of the pulse generator dt is the change in...

Page 36: ...by the time constant of the charge curve The current ramp shows how the values for the inductance formula are obtained Use this formula to calculate the inductance based on the current measurement whe...

Page 37: ...rent limited source as shown 2 Measure the input current on one of the inductor leads 3 Clamp the current probe around the inductor and note the current value The number of turns is equal to the ratio...

Page 38: ...e test coil into the current probe so that the currents oppose each other as shown You must observe the polarity of coil current to determine whether the test coil has less or more turns than the refe...

Page 39: ...fications are provided where appropriate so that you can choose the accessory that best fits your needs Probe Ground Lead 1 Fasten the small clip to the ground stub on the probe body 2 Clip the alliga...

Page 40: ...ld the probe the accessories and the Instruction Manual 1 Place the probe accessories and manual in the carrying case 2 Close the carrying case to transport the accessories to another location or for...

Page 41: ...instructions Reorder Tektronix part number 071 3003 xx Manuals in the languages listed below are available online for this product Other languages may also be available check the Tektronix Web site a...

Page 42: ...onix TekVPI interface The adapter allows TekVPI interface oscilloscopes to recognize TekProbe interface probes and to supply the necessary power serial communication and offset control to the probe WA...

Page 43: ...tion procedures The BNC connector allows for easy connections to current sources To use the current loop follow the procedure for the specific task that you are performing for example Performance Veri...

Page 44: ...ocedures on the probe It provides power to the probe and routes the probe output signal out through an SMA connector on the back of the fixture The signal can then be measured with another instrument...

Page 45: ...e probe calibration or deskew procedures The deskew procedures compensate for gain errors and timing differences between current and voltage probes Refer to your oscilloscope manual or fixture documen...

Page 46: ...n C5 Calibration Service 5 years Option D1 Calibration Data Report Option D3 Calibration Data Report 3 years with Option C3 Option D5 Calibration Data Report 5 years with Option C5 Option R3 Repair Se...

Page 47: ...that the conductor in the probe jaws is completely unpowered Any current flowing through the conductor will cause a residual offset in the current probe and may cause an inaccurate measurement or an e...

Page 48: ...e two conductors in one current probe WARNING Do not force the slide closed Damage to the probe may result If you cannot close the slide around the conductor s either reduce the number of conductors y...

Page 49: ...onductors Be careful not to pinch a conductor in the probe jaws 3 Measure the current Conventional current flows from positive to negative A waveform above the baseline indicates that the conductor wi...

Page 50: ...RNING To avoid personal injury or equipment damage do not exceed the specified electrical limits of the probe or any applicable accessories When using multiple conductors do not exceed current limits...

Page 51: ...e probe jaw with the conductor under test 2 Orient the second conductor so that the bucking current flows in the opposite direction of the DC flow in the conductor under test 3 To determine measuremen...

Page 52: ...ucking current is equal to the current flowing in the conductor multiplied by the number of turns wound around the probe For example if the second conductor has a current of 100 mA DC and is wrapped a...

Page 53: ...al is multiplied by the number of turns around the probe 2 To obtain the actual current value divide the displayed amplitude by the number of turns For example if a conductor is wrapped around the pro...

Page 54: ...at high frequencies and strong magnetic fields on the supply side of your circuit can cause measurement errors To avoid this 1 Measure on the low or ground side of your circuit 2 Orient the probe to m...

Page 55: ...probe See Table 2 on page 40 Maximum Pulsed Current ImaxP is the maximum peak value of pulsed current the probe can accurately measure regardless of how short within bandwidth limitations the pulse du...

Page 56: ...your measurement exceeds the Ampere second product you must first determine the maximum allowable pulse width or maximum allowable pulse amplitude as described in the following section NOTE Always de...

Page 57: ...Ampere second or Ampere microsecond specification for the range setting of the TCP202A probe by the measured peak current of the pulse The quotient is the maximum allowable pulse width PWmax 3 Check t...

Page 58: ...ion for the TCP202A probe by the pulse width The quotient is the maximum allowable pulse amplitude the peak amplitude of the measured pulse must be less than this value For example the TCP202A probe h...

Page 59: ...imits described See Table 1 Specifications for the TCP202A current probe fall into three categories warranted typical and nominal characteristics Warranted Characteristics Warranted characteristics de...

Page 60: ...See Figure 3 on page 43 15 A DC peak AC Maximum peak current See Figure 3 on page 43 50 A maximum peak pulse pulse width 10 us Displayed RMS noise 2 5 mA RMS limit measurement bandwidth to 20 MHz Ins...

Page 61: ...Specifications Figure 1 Frequency derating at 25 C and 50 C ambient temperatures TCP202A Current Probe Instruction Manual 41...

Page 62: ...Specifications Figure 2 Typical input impedance versus frequency 42 TCP202A Current Probe Instruction Manual...

Page 63: ...Specifications Figure 3 Maximum peak pulse versus pulse width TCP202A Current Probe Instruction Manual 43...

Page 64: ...Altitude Operating Up to 3000 meters 10 000 feet Nonoperating Up to 12 192 meters 40 000 feet Table 4 Typical mechanical characteristics Characteristic Description Dimensions compensation box 107 mm 4...

Page 65: ...Specifications Figure 4 Probe dimensions TCP202A Current Probe Instruction Manual 45...

Page 66: ...electrical characteristics Characteristic Description Input coupling DC Current range 15 A Termination Terminate output into 50 Compatibility Oscilloscopes equipped with the TekProbe interface Oscill...

Page 67: ...at follow verify the warranted specifications of the probe listed below The recommended calibration interval is one year DC gain accuracy Rise time Bandwidth Perform the following verification procedu...

Page 68: ...curacy 0 to 1 5 V square wave output ACA 0 25 accuracy 0 to 6 A square wave output Fluke 9100 Digital Multimeter DMM 0 02 accuracy Tektronix DMM4040 4050 Adapter TekVPI calibration verification adapte...

Page 69: ...oximately 3 inches in diameter 1 Wind exactly 5 turns of 18 coated wire around the form 2 Scrape about a half inch of coating off of the ends of the wire NOTE Ensure that the current loop has exactly...

Page 70: ...scope 2 Connect the probe to any channel of the oscilloscope 3 Press the DEGAUSS button 4 Set the oscilloscope coupling to DC 5 Power on the current source and the pulse generator 6 Allow 20 minutes f...

Page 71: ...apter to the SMA output of the TekVPI Calibration Verification adapter 3 Connect the BNC cable between the BNC adapter on the TekVPI Calibration Verification adapter and the BNC adapter attached to th...

Page 72: ...turn current loop to the current source and then clamp the current probe around the 5 turn current loop as shown The arrow indicator on the probe should point away from the terminal of the current sou...

Page 73: ...ude values and the formula shown For example you might measure values of 0 250 V for M1 and 0 255 V for M2 With an expected output voltage Ve of 0 250 V compute the Error as shown 16 Record the comput...

Page 74: ...ise time 1 Connect the BNC cable to the output of the pulse generator 2 Connect the other end of the BNC cable to the HF current loop 3 Set the pulse generator output and pulse width to maximum 4 Set...

Page 75: ...t loop Verify that the arrow shaped indicator on the probe points away from the pulse generator 7 Record the rise time measurement in the Test Record 8 Calculate the probe bandwidth using the measured...

Page 76: ...rature Date of Calibration Certificate Number RH Technician Performance test Expected output Minimum Incoming Outgoing Maximum DC gain accuracy 0 250 V 0 2425 V 0 2575 V Rise time 7 0 ns NA 7 0 ns Ban...

Page 77: ...Verification to set up the equipment You also need the tools listed below to complete the adjustments Table 7 Adjustment tools Item Description Tektronix part number Release tool Compensation box cov...

Page 78: ...ox Cover 1 Press the release tool pins into the compensation box cover catches and gently lift the cover off a small distance 2 Hold the open edge apart and use the tool to open the other side of the...

Page 79: ...t board to access the gain adjustment 2 Set up the probe for the DC accuracy test See page 51 DC Gain Accuracy 3 Set the current source output to 0 50 A 4 Adjust the probe output to 250 mV 5 mV 5 Disc...

Page 80: ...nterface and the strain relief notches with the tabs on the cover 2 Press the catches of the cover in and lower the cover 3 Slide the tab into the notch 4 Firmly press the pieces together until the co...

Page 81: ...ully closed Close the jaw completely The oscilloscope channel that the probe is connected to may not be selected Check your connections and oscilloscope settings The oscilloscope channel may be bad Tr...

Page 82: ...Avoid using chemicals that contain benzine benzene toluene xylene acetone or similar solvents Clean the exterior surfaces of the probe with a dry lint free cloth or a soft bristle brush If dirt remain...

Page 83: ...current 28 Documentation xiii E Equipment required adjustments 57 performance verification 48 Equipment setup 50 Extending the current range of the probes 30 F Features 1 Frequency derating 35 Functio...

Page 84: ...ng the current limit 30 maximum current limits 35 saturation 35 R Record test 56 Related documentation xiii Rise time check 54 S Safety Summary v Service options 26 Slider and conductor jaw 8 Specific...

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