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Application Notes

3- 14

TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual

d

i

d

t

Time (t)

Current

flow (i)

Figure 3- 10: Linear current vs. time ramp

If the pulse source has a higher impedance of known resistance, such that the
output voltage drops as the current increases, the inductance of a coil can be
calculated by the time constant of the charge curve. Figure 3--11 shows the setup
diagram, which is similar to the previous example. The current ramp represented
in Figure 3--12 shows how the values for the inductance formula are obtained.

Use this formula to calculate the inductance based on the current measurement:

L

=

τ

R

where

L

is the inductance in henries,

τ

is the time required for the current to rise

or fall 63.2% of the total current value, and

R

is the source resistance of the pulse

generator.

High-Impedance Pulse

Sources

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Содержание TCPA300 SERIES

Страница 1: ...his document applies for firmware version 1 0 and above Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are...

Страница 2: ...nd pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektr...

Страница 3: ...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 maintena...

Страница 4: ......

Страница 5: ...2 2 PROBE DEGAUSS AUTOBALANCE Button and Indicator 2 2 MANUAL BALANCE Buttons and Indicator 2 3 PROBE OPEN Indicator 2 3 OVERLOAD Indicator 2 3 NOT TERMINATED INTO 50 Indicator 2 4 NONCOMPATIBLE PROB...

Страница 6: ...rification Overview 5 1 Performance Verification and Functional Checks 5 1 Test Procedure Conditions 5 2 Equipment Preparation 5 2 TCPA300 and TCPA400 Performance Verification 5 3 Equipment Required 5...

Страница 7: ...ansient Response and Coarse Gain Adjustment 6 13 DC Gain Adjustment 6 18 Maintenance Customer Maintenance 7 1 Service Strategy 7 1 Preventive Maintenance 7 1 Disassembly 7 3 Amplifiers 7 3 Equipment R...

Страница 8: ...Table of Contents iv TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 9: ...e 3 5 Increasing the DC measurement range 3 9 Figure 3 6 Increasing probe sensitivity 3 10 Figure 3 7 Setup for measuring charging current 3 12 Figure 3 8 Charge Current Waveforms 3 12 Figure 3 9 Meas...

Страница 10: ...accuracy test setup for the TCP303 and TCP404XL 5 33 Figure 5 11 Rise time test setup for the TCP303 and TCP404XL 5 36 Figure 5 12 Bandwidth test setup for TCP303 5 39 Figure 6 1 Amplifier adjustment...

Страница 11: ...and cable assembly 7 17 Figure 7 15 Removing the handle 7 18 Figure 7 16 Removing the current transformer 7 19 Figure 7 17 Removing the circuit board and cable 7 20 Figure 7 18 Displaying the amplifi...

Страница 12: ...Table of Contents viii TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 13: ...ces 4 6 Table 5 1 Amplifier checks 5 1 Table 5 2 Probe performance verification checks 5 1 Table 5 3 Required test equipment 5 3 Table 5 4 Equipment settings 5 7 Table 5 5 DC gain accuracy test for th...

Страница 14: ...ents 6 4 Table 6 4 TCPA400 gain adjustments 6 5 Table 6 5 Required test equipment 6 7 Table 6 6 Settings for DC gain adjustment 6 8 Table 6 7 DC gain accuracy adjustments for the TCP305 and TCP312 6 9...

Страница 15: ...t under test before disconnecting the probe from the measurement instrument Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the gr...

Страница 16: ...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 inju...

Страница 17: ...adjustments of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock switch off the instrument power then disconnect t...

Страница 18: ...Service Safety Summary xiv TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 19: ...advanced user the Reference section contains information on advanced applications as well as user diagnostic and troubleshooting informa tion The Performance Verification and Adjustment Procedure sec...

Страница 20: ...Preface xvi TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 21: ...Getting Started...

Страница 22: ......

Страница 23: ...se signals The TCPA300 and TCPA400 and associated probes provide these features H Simultaneous DC and AC current measurements up to 750 A peak H High sensitivity H One button autobalancing and probe d...

Страница 24: ...tinuous 750 amps DC derated with duty cycle You can also use the CT 4 High Current Transformer with the TCP305 and TCP312 current probes to extend the AC current measurement range to 20 000 peak amps...

Страница 25: ...ontact your local Tektronix Sales Office for more information Table 1 2 Service options Option Description D1 Provides the initial Test Data Report from the factory on delivery C3 Provides factory cal...

Страница 26: ...s The following accessories are shipped with the TCPA300 and TCPA400 amplifiers H Power Cord customer chosen option H BNC Cable H Termination 50 2W H TEKPROBE Interconnect Cable H Instruction Manual E...

Страница 27: ...asure high amplitude AC currents consider using the CT 4 with the TCP303 and TCP312 probes The CT 4 provides step down ratios of 20 1 or 1000 1 For more information about the CT 4 consult your Tektron...

Страница 28: ...me with a probe cover that stores the probe when not in use Use the probe cover to hold your probe in a convenient place at your bench or workstation when you are not using it You can attach the probe...

Страница 29: ...to store one amplifier and two TCP300 400 Series Current Probes one of each size For example you can store a TCP305 and a TCP303 probe A compartment is included to store associated cables and termina...

Страница 30: ...t probe For example when using a TCP312 Current Probe the oscilloscope bandwidth must be at least 500 MHz When using a TCP305 Current Probe the oscilloscope bandwidth must be at least 250 MHz After yo...

Страница 31: ...but will only operate properly with TCP4XX probes To disconnect the probe from the amplifier pull back on the connector housing and pull the connector straight off the front panel CAUTION Handle curre...

Страница 32: ...305 or TCP312 current probes on INSULATED wires The TCP303 and TCP404XL current probes can be used to measure current on uninsulated wires However the circuit must be de energized when connecting or r...

Страница 33: ...degauss the probe is a leading cause of measurement errors The DEGAUSS LED flashes until you degauss the probe To degauss the probe disconnect the probe from the test circuit or ensure that the conduc...

Страница 34: ...The degauss procedure will fail if the amplifier is not properly connected to an oscilloscope having 50 input impedance If this occurs the NOT TERMINATED INTO 50 LED lights on the amplifier front pan...

Страница 35: ...e probe slide place the probe around the conductor under test and then lock the slide For correct measurement polarity make sure the probe arrow is pointing in the direction of conventional positive t...

Страница 36: ...E button WARNING Do not clamp the TCP305 or TCP312 current probes around uninsulated wires Damage to the probe or personal injury may result Only use the TCP305 or TCP312 current probes on INSULATED w...

Страница 37: ...Operating Basics...

Страница 38: ......

Страница 39: ...ror lights indicate the following faults PROBE OPEN OVERLOAD current or temperature NOT TERMINATED INTO 50 and NONCOMPATIBLE PROBE TYPE The current probes connect to the TCPA300 and TCPA400 at the PRO...

Страница 40: ...ce function remove the probe from all conductors or ensure that the conductor under test has no power make sure the probe is locked closed and then press the PROBE DEGAUSS AUTOBA LANCE button The prob...

Страница 41: ...e of the MANUAL BALANCE buttons in DC coupling mode When lit this indicator informs you that the current probe is unlocked You must have the probe slide locked to degauss the probe or to accurately me...

Страница 42: ...tached to the TCPA300 If no RANGE LEDs are lit this indicates a probe is not connected to the amplifier The COUPLING button determines the coupling between the TCPA300 TCPA400 and the oscilloscope Pre...

Страница 43: ...oscope input and connect the amplifier output cable to the termination Do not place the feedthrough termination at the amplifier end of the BNC connecting cable After the PROBE DEGAUSS AUTOBALANCE rou...

Страница 44: ...mplifiers do not have direct GPIB connections However you can use a computer to control the oscilloscope that the amplifier is connected to enabling you to change the time and scale factors of your cu...

Страница 45: ...Reference...

Страница 46: ......

Страница 47: ...e probe jaws is completely unpowered Any current flowing through the conductor will cause a residual offset in the current probe and the amplifier may report an inaccurate result If the impedance of y...

Страница 48: ...atings like those typically found on transformer windings do not provide sufficient reliable insulation for use with current probes The lacquer coating can be easily nicked or damaged compromising the...

Страница 49: ...nt does not exceed the probe specifications AC coupling will affect waveforms at frequencies higher than the AC Coupling Low Frequency Bandwidth For example pulsed currents may exhibit rolloff or decr...

Страница 50: ...width limitations the pulse duration is H Ampere Second Product defines the maximum width of pulsed current that you can measure when the pulse amplitude is between the maximum continuous and maximum...

Страница 51: ...mum allowable pulse amplitude measure the pulse width at the 50 points see Figure 3 3b Divide the Ampere second or Ampere microsecond specification of your probe by the pulse width The quotient is the...

Страница 52: ...period Figure 3 4 illustrates a continuous and noncontinuous current and how to calculate the duty cycle Measured current A Noncontinuous current level A Continuous current level A Measurement time mi...

Страница 53: ...12 Compare the maximum measurement time allowed for a duty cycle of 20 At 750 amps you have 3 minutes of safe measurement time versus 17 minutes for a smaller noncontinuous current amplitude of 600 a...

Страница 54: ...ulation or without insulation rated for the voltage present on the conductor under test To supply additional bucking current place a second conductor that has a pure DC component of known value in the...

Страница 55: ...C measurement range You can extend the AC amplitude limit of the TCPA300 by using the Tektronix CT 4 High Current Transformer The CT 4 designed for use with the TCP305 and TCP312 current probes extend...

Страница 56: ...s An uninsulated conductor is defined as any conductor without insulation or without insulation rated for the voltage present on the conductor under test When viewing the signal on the oscilloscope sc...

Страница 57: ...rrent waveform can quickly reveal if one diode is shorted or open The diagram in Figure 3 7 shows the equipment setup Refer to Table 3 2 for the test equipment setup A TCP303 Current Probe was used fo...

Страница 58: ...ipple frequency The average charge current is approximately 27 A with a minimum peak of approxi mately 23 A and a maximum peak of approximately 31 A The waveform shows a continuous cycle with no dropo...

Страница 59: ...The current probe is attached to one of the source leads and the current ramp is measured The inductance is effectively defined by the slope of the current ramp shown in Figure 3 10 and is mathematica...

Страница 60: ...e calculated by the time constant of the charge curve Figure 3 11 shows the setup diagram which is similar to the previous example The current ramp represented in Figure 3 12 shows how the values for...

Страница 61: ...igure 3 12 High impedance source current ramp Continuity Test of Multiple Conductor Cable Single conductors in a multiconductor cable can be tested with the TCPA300 and TCPA400 To check a conductor cl...

Страница 62: ...or a more precise turns count you need a coil with a known number of turns to use as a reference The measurement setup is similar to the previously described one except the reference coil and the test...

Страница 63: ...a sophisticated analysis tool that quickly measures and analyzes many different applications such as H Power dissipation at switching devices and magnetic components in switching power supplies H Prec...

Страница 64: ...Application Notes 3 18 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 65: ...asurements In most cases 15 minutes is sufficient All LEDs are flashing All LEDs flashing indicates a thermal shutdown Power cycle the system and let it cool before taking measurements In most cases 1...

Страница 66: ...ng mode Oscilloscope Amplifier is not set to an appropriate sensitivity setting Stray DC component in measurement Degauss the probe using the PROBE DEGAUSS AUTOBALANCE button The Current Probe has bee...

Страница 67: ...see Current Limits on page 3 4 If possible upgrade to a probe with a higher current rating or use a CT 4 transformer Excessive low frequency droop in pulse response or low DC gain accuracy Check that...

Страница 68: ...binary error code The PROBE OPEN LED indicates the most significant bit MSB and the NONCOMPATIBLE PROBE TYPE LED indicates the least significant bit LSB See Figure 3 15 To continue past an error code...

Страница 69: ...cable assembly If the above steps do not resolve the error the amplifier needs service 6 An error occurred while the amplifier was adjusting the Overload trip Power cycle the amplifier and run the Deg...

Страница 70: ...wn condition exists If this occurs turn off the amplifier and disconnect the probe from the circuit under test Turning off the amplifier clears the error register A shutdown condition can be caused by...

Страница 71: ...Specifications...

Страница 72: ......

Страница 73: ...d and thereafter whenever the PROBE DEGAUSS AUTOBALANCE light blinks H The amplifier output is properly terminated into 50 Specifications are separated into two categories warranted specifications and...

Страница 74: ...th to 20 MHz 500 ARMS Limit measurement bandwidth to 20 MHz 70 mARMS Limit measurement bandwidth to 20 MHz Signal Delay typical includes probe amplifier and TEKPROBE to TEKPROBE interface cable or 012...

Страница 75: ...25 A 25 A DC noncontinuous N A N A N A RMS sinusoidal 3 5 A 17 7 A 17 7 A Peak Pulse 50 A 50 A 500 A Input Voltage 100 240 VAC 10 47 Hz to 440 Hz single phase Maximum Power 50 Watts maximum Fuse Rati...

Страница 76: ...303 and TCP404XL 41 mm 1 6 in 67 mm 2 7 in 21 mm 0 83 in 25 mm 1 0 in 11 9 mm 0 470 in 18 9 mm 0 745 in Maximum wire size 3 8 mm 0 15 in Maximum wire size 21 mm 0 83 in Figure 4 1 Probe jaw dimensions...

Страница 77: ...Ambient Temperature Operating 0 _C to 50 _C 32 _F to 122 _F Nonoperating 40 _C to 75 _C 40 _F to 167 _F Humidity Operating 5 to 95 R H to 30 _C 86 _F 5 to 85 R H 30 _C to 50 _C 86 _F to 122 _F Nonope...

Страница 78: ...omagnetic Compatibility when it is used with the product s stated in the specifications table Refer to the EMC specification published for the stated products May not meet the intent of the directive...

Страница 79: ...iptions A measure of the contaminates that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external P...

Страница 80: ...rating curve 0 5 10 15 20 25 30 Peak current A 1k 10k 100k Frequency Hz 1M 10M 35 100M 50_C ambient 25_C ambient Figure 4 2 Frequency derating TCP312 TCP305 derating curve 0 10 20 30 40 50 60 Peak cur...

Страница 81: ...rve 0 50 100 150 200 250 Peak current A 1k 10k 100k Frequency Hz 1M 10 M 50_C ambient 25_C ambient 100 100M Figure 4 4 Frequency derating TCP303 TCP404XL derating curve 0 100 200 300 400 500 600 Peak...

Страница 82: ...10k 100k 1M 10M 100M Frequency Hz TCP303 100 10 Insertion Z ohms 10m 1m 10 100 1k 10k 100k Frequency Hz 1M 100m TCP404XL 10M Insertion Z ohms 1 0 1 01 001 10k 100k 1M 10M 100M Frequency Hz TCP312 Ins...

Страница 83: ...Peak 0 TCP312 Max peak pulse vs PW TCP305 Max peak pulse vs PW 5 10 15 20 25 25 A continuous 30 A continuous 15000 A s 3000 A s Any width Any width 10 A V 1 A V Any width 25A continuous Allowable pul...

Страница 84: ...oncontin uous Current with the TCP404XL Probe on page 3 6 Measuring 750A at 50 _C ambient Duty cycle 0 5 10 15 20 25 30 35 0 2 4 6 8 10 12 Maximum measurement time min 0A Continuous 100A Continuous 20...

Страница 85: ...50 60 5 10 15 20 25 Maximum measurement time min 0 300A Continuous 400A Continuous 500A Continuous 200A Continuous 0A Continuous Measuring 750A at 23 _C ambient Figure 4 10 Measuring 750A noncontinuo...

Страница 86: ...Specifications 4 14 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 87: ...re for use only by qualified personnel To avoid injury do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so Refer to all safety summaries...

Страница 88: ......

Страница 89: ...Performance Verification...

Страница 90: ......

Страница 91: ...e amplifiers and current probes and do not include test equipment error The recommended calibration interval is one year Performance Verification and Functional Checks The warranted specifications for...

Страница 92: ...ine has been performed after the 20 minute warm up period Equipment Preparation Before performing the verification tests turn all equipment on and allow the entire system to warm up for a minimum of 2...

Страница 93: ...andwidth Tektronix TDS5000 1 Leveled Sine Wave Generator 3 MHz to 100 MHz Wavetek 9100 with 250 MHz Oscilloscope Calibration Option 1 Digital Multimeter DCV 0 1 Accuracy 51 2 digit resolution Keithley...

Страница 94: ...wire NOTE Ensure that the current loop has exactly 5 turns A significant error will result for each turn variance from 5 turns The 5 turn DC current loop is also used in the current probe performance...

Страница 95: ...e amplifier and check that the LEDs shown in Figure 5 1 light briefly Note that the PROBE DEGAUSS AUTOBALANCE and OVERLOAD LEDs are multi color a The PROBE DEGAUSS AUTOBALANCE LED lights in an orange...

Страница 96: ...ation to a BNC to dual banana adapter c Observe polarity and insert the dual banana adapter into the digital multimeter DC voltage input 2 Connect the probe input to the current source a Connect the B...

Страница 97: ...to the PROBE INPUT of the amplifier 5 For each of the Range settings in Table 5 5 perform the following steps a If you are checking a TCPA300 set the amplifier to the desired Range setting in Table 5...

Страница 98: ...or 2 5100 2 5000 2 5000 100 0 4 NOTE It is important that the correct polarity be used to calculate the Error 6 Verify that the measured DC gain accuracy is within the limits specified for all setting...

Страница 99: ...re if oscilloscope has only high impedance input Note If using a Wavetek 9100 use the Signal Out BNC connector on the rear of the instrument Figure 5 3 Bandwidth test setup 1 If you are using a Tektro...

Страница 100: ...e TCPA300 amplifier in Table 5 7 on page 5 11 If you are checking a TCPA400 amplifier use Table 5 8 on page 5 11 7 Using the peak peak measurement capability of the oscilloscope measure and record the...

Страница 101: ...ce cable Coaxial cable Range Vertical gain setting Amplifier output p p Vertical gain setting Amplifier output p p Bandwidth filter and generator frequency Correction factor1 M1 M2 1 A V 500 mA div 3...

Страница 102: ...ation here if oscilloscope has only high impedance input Note If using a Wavetek 9100 use the Output connector on the front of the instrument Figure 5 4 AC coupling test setup To perform the check do...

Страница 103: ...1 00 Vp p 1 05 Vp p 1 50 Vp p 10 Disconnect the Calibration Adapter from the amplifier Degauss This is a functional test of the degauss operation Refer to Figure 5 5 1 Connect a current probe to the o...

Страница 104: ...fer to page 5 4 for instructions on making the current loops Current source 5 or 50 turn current loop depending on probe type Probe Output Current flow TCPA300 Amplifier Test oscilloscope 50 oscillosc...

Страница 105: ...50 A RMS probe with a peak current of 212 A Apply current for only a short amount of time 5 Slowly increase the output of the current source until the OVERLOAD LED on the amplifier is on CAUTION Do no...

Страница 106: ...elative Humidity Date of Calibration Technician Performance test Range A V Minimum Measured calculated Maximum Front Panel Display Pass Fail DC Gain Accuracy Error 1 1 1 5 1 1 10 1 1 50 1 1 50 COMP 1...

Страница 107: ...nstrument Serial Number Certificate Number Temperature Relative Humidity Date of Calibration Technician Performance test Minimum Measured calculated Maximum Front Panel Display Pass Fail DC Gain Accur...

Страница 108: ...TCPA300 and TCPA400 Performance Verification 5 18 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 109: ...s photocopy the appropriate test record beginning on page 5 29 to record the performance test results The recommended calibration interval is one year NOTE If the amplifier is not properly terminated...

Страница 110: ...Amplifier Tektronix TCPA300 1 Leveled Sine Wave Generator 3 MHz to 100 MHz Wavetek 9100 with Option 250 1 High Amplitude Pulse Generator Rise time 1 ns pulse width 100 ns amplitude 5 Vp p into 50 Pico...

Страница 111: ...r Insert the dual banana adapter into the digital multimeter DC voltage input taking care to maintain polarity 2 Connect the current loop to the current source as shown in Figure 5 7 3 Connect the cur...

Страница 112: ...the terminal of the current source 4 For each of the amplifier range settings in Table 5 13 perform the following steps a Set the amplifier range to the first setting in Table 5 13 for the probe you a...

Страница 113: ...0 A 5 00 V TCP312 1 A V 0 20 A 1 00 V 0 60 A 3 00 V 1 00 A 5 00 V 10 A V 1 20 A 0 60 V 3 60 A 1 80 V 6 00 A 3 00 V g Verify that the measured output M1 M2 is within the warranted specification listed...

Страница 114: ...ports the TekProbe Level 2 Interface use the TekProbe Interface Cable to connect the amplifier OUTPUT to the oscilloscope input If you are not using a Tektronix oscilloscope that supports the TekProbe...

Страница 115: ...USS AUTOBALANCE button Wait for the degauss autobalance routine to complete before proceeding The routine is complete when the indicator light turns off 3 Clamp the current probe around the HF current...

Страница 116: ...fall below 3 dB at the probe bandwidth Refer to Figure 5 9 when making equipment connections Leveled sine wave generator Output 50 oscilloscope input use the TekProbe Interface Cable or use a 50 cable...

Страница 117: ...d sine wave generator Frequency 3 MHz Amplitude 3 Vp p TCPA300 Coupling DC 1 Do not clamp the current probe around any conductor but make sure the jaws are locked shut 2 Press the amplifier PROBE DEGA...

Страница 118: ...ble 4 1 on page 4 1 8 Using the peak peak measurement capability of the oscilloscope measure and record the peak peak reading as M2 9 The probe meets the bandwidth specification if the ratio of the si...

Страница 119: ...it to record the performance test results TCP305 test record Instrument Serial Number Certificate Number Temperature Relative Humidity Date of Calibration Technician Performance test Range A V Test cu...

Страница 120: ...it to record the performance test results TCP312 test record Instrument Serial Number Certificate Number Temperature Relative Humidity Date of Calibration Technician Performance test Range A V Test cu...

Страница 121: ...ures photocopy the appropriate test record beginning on page 5 42 to record the performance test results The recommended calibration interval is one year NOTE If the amplifier is not properly terminat...

Страница 122: ...cond Labs 2600 1 High Amplitude Pulse Generator TCP404XL only Square wave with a rise time 35 ns 5 A into 50 AVTECH AVR 3 PW C P TEK2 1 Leveled Sine Wave Generator TCP303 only 3 MHz to 20 MHz Wavetek...

Страница 123: ...ana adapter Insert the dual banana adapter into the digital multimeter DC voltage input taking care to maintain polarity 2 Connect the current loop to the current source as shown in Figure 5 10 3 Conn...

Страница 124: ...probe For example set the range to 5A V b Set the current source output to the first positive setting in Table 5 19 for the probe you are testing For example if you are testing a TCP303 set the output...

Страница 125: ...test worksheet for the TCP303 and TCP404XL Probe Range Current source output ADC Expected output VE VAC M1 VDC M2 VDC M1 M2 VDC Error calcu lated TCP303 5 A V 0 100 A 1 00 V 0 300 A 3 00 V 0 500 A 5...

Страница 126: ...d TCP404XL 1 If you are using a Tektronix oscilloscope that supports the TekProbe Level 2 Interface use the TekProbe Interface Cable to connect the amplifier OUTPUT to the oscilloscope input If you ar...

Страница 127: ...Edge Trigger mode Auto Trigger position 50 Acquisition mode Average Number of waveforms to average 32 Measurement type Rise Time High amplitude pulse generator TCP303 Amplitude Maximum High amplitude...

Страница 128: ...r on the probe points away from the output terminal on the pulse generator 4 Adjust the vertical gain and set the vertical position of the oscilloscope so that the trace is at the bottom of the screen...

Страница 129: ...ut use the TekProbe Interface Cable or use a 50 cable Add 50 termination here if oscilloscope has only high impedance input Amplifier Figure 5 12 Bandwidth test setup for TCP303 1 If you are using a T...

Страница 130: ...the jaws are locked shut 2 Press the amplifier PROBE DEGAUSS AUTOBALANCE button Wait for the degauss autobalance routine to complete before proceeding The routine is complete when the indicator light...

Страница 131: ...MHz Using the following calculation verify probe band width M2 M1 0 707 10 Record the results on the test record Bandwidth TCP404XL The bandwidth of the probe is derived as a function of the probe ri...

Страница 132: ...trument Serial Number Certificate Number Temperature Relative Humidity Date of Calibration Technician Performance test Range A V Test current A Minimum Measured calculated Maximum DC Gain Accuracy1 Er...

Страница 133: ...opy this form and use it to record the performance test results TCP404XL test record Instrument Serial Number Certificate Number Temperature Relative Humidity Date of Calibration Technician Performanc...

Страница 134: ...TCP303 and TCP404XL Performance Verification 5 44 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 135: ...Adjustment Procedures...

Страница 136: ......

Страница 137: ...tion adapter to the amplifier 2 If you are adjusting a probe attach the current probe to the amplifier 3 Turn the power on and allow the entire system to warm up for a minimum of 20 minutes Warm up an...

Страница 138: ...Adjustment Procedures Overview 6 2 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 139: ...rent Source 0 1 0 to 100 mA Fluke 5100A or HP 6612C 1 Termination 50 0 1 0 5 W Tektronix part number 011 0129 00 2 BNC Cables 50 1 05 m 42 in long Tektronix part number 012 0117 00 1 Cables TEKPROBE I...

Страница 140: ...n termination Calibration adapter BNC to dual banana adapter Amplifier 50 Coaxial cable Figure 6 1 Amplifier adjustments 2 Set the current source to the values shown in Table 6 3 and adjust the corres...

Страница 141: ...t up the circuit shown in Figure 6 1 on page 6 4 2 Set the current source to the value shown in Table 6 4 and adjust the corresponding adjustment pot to within the limits shown in Table 6 4 Use Figure...

Страница 142: ...TCPA300 and TCPA400 Amplifier Adjustments 6 6 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 143: ...be changed if the recom mended equipment is not used Table 6 5 Required test equipment Qty Item Description Recommended equipment 1 AC Current Source ACA 0 25 accuracy 0 to 1 5 A square wave output W...

Страница 144: ...ation at the amplifier output 2 Connect the current probe to the amplifier PROBE INPUT connector 3 Connect the 5 turn DC current loop to the current source as shown in Figure 6 4 on page 6 9 4 Do not...

Страница 145: ...d perform the following steps a Set the amplifier to the appropriate range setting for the probe you are testing b Set the current source output to the correct current level c Enable the output of the...

Страница 146: ...TCP305 and TCP312 Adjustments 6 10 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 147: ...ad each procedure before starting Table 6 8 Required test equipment Qty Item Description Recommended example 1 Oscilloscope 100 MHz bandwidth Tektronix TDS5000 1 High Amplitude Pulse Genera tor TCP404...

Страница 148: ...mplifiers and TCP300 400 Series Current Probes Instruction Manual Adjustment Locations Refer to Figure 6 5 for the location of the probe adjustments 1 s DC Gain 10 s TCP404XL TCP303 1 s DC Gain 10 s F...

Страница 149: ...onix oscilloscope that supports the TEKPROBE Level 2 Interface use the TEKPROBE Interface Cable to connect the amplifier OUTPUT to the oscilloscope input If you are not using a Tektronix oscilloscope...

Страница 150: ...lse generator Current probe TCP404XL use built in current loop AC current source Figure 6 6 TCP303 and TCP404XL transient response and coarse gain adjustment setup Make or verify the equipment setting...

Страница 151: ...e Base 100 s division Auto triggered Vertical Input 50 Record Length 500 Coupling DC Offset 0 V Trigger Type Edge Mode Auto Position 10 Acquisition Mode Average Number of Wave forms 8 Measurement Type...

Страница 152: ...e before proceeding The routine is complete when the indicator light turns green 5 Connect the probe to the 1 turn current loop 6 Enable the output of the generator NOTE The DC gain 10 s and 1 s adjus...

Страница 153: ...o green 6 Lock the jaws of the probe around the built in current loop on the high amplitude pulse generator Observe proper polarity the arrow shaped indicator on the probe points away from the termina...

Страница 154: ...put 2 Connect the current probe to the amplifier PROBE INPUT connector 3 If you are adjusting a TCP303 connect the banana lead cable to the output connectors of the AC current source If you are adjust...

Страница 155: ...tine to complete before proceeding The routine is complete when the indicator light turns green 3 Connect the current probe to the appropriate current loop One turn for the TCP303 and 5 turn for the T...

Страница 156: ...ction Manual 6 If the DC gain adjustment was adjusted verify the pulse response by repeating the TCP303 and TCP404XL Transient Response and Coarse Adjustment procedure beginning on page 6 13 7 When th...

Страница 157: ...Maintenance...

Страница 158: ......

Страница 159: ...aces in the probe jaw Protect the instrument from adverse weather conditions The instrument is not waterproof CAUTION To avoid damage to the instrument do not expose it to sprays liquids or solvents D...

Страница 160: ...Customer Maintenance 7 2 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 161: ...e procedures when making adjustments or replacing components in the amplifiers WARNING Amplifier disassembly must be performed by qualified service personnel at an antistatic workstation The following...

Страница 162: ...so want to remove the case and covers to access the internal adjustments The following procedures describe the removal process 1 Disconnect the AC cord and any probes or cables from the amplifier 2 Re...

Страница 163: ...bes Instruction Manual 7 5 3 Remove the 6 screws that secure the right side inner panel to the chassis See Figure 7 2 Right side panel Amplifier Screws 6 Torque screws to 8 in lbs when reassembling Ad...

Страница 164: ...the left side inner panel to the chassis See Figure 7 3 Left side panel Amplifier Screws 4 Torque screws to 8 in lbs when reassembling Figure 7 3 Removing the left side inner panel You now have expos...

Страница 165: ...t sink clip Screw Torque screws to 4 in lbs when reassembling Probe input connector frame Figure 7 4 Disconnecting the front panel assembly 3 Disconnect the front panel ribbon connector from J4 on the...

Страница 166: ...learance for the amplifier board 4 Disconnect the DC power supply connector from J3 on the amplifier board 5 Disconnect the fan connector from J2 on the amplifier board 6 Using pliers remove the three...

Страница 167: ...ull the front panel assembly away from the amplifier and set it aside See Figure 7 6 9 Remove the three screws that attach the amplifier board to the chassis 10 Do in reverse steps 8 through 2 to inst...

Страница 168: ...re 7 7 and do the following 1 Disconnect the AC and DC power connectors from the power supply 2 Remove the four screws from the power supply 3 Remove the power supply from the chassis 4 Do in reverse...

Страница 169: ...replace the fan you must first detach the rear panel of the amplifier from the chassis to gain access to the fan 1 Remove the 2 Phillips screws that attach the AC power connector to the rear panel Se...

Страница 170: ...ough to allow access to the four nuts that secure the fan to the rear panel Nuts 4 J3 connector J2 connector Move the rear panel back Screws 2 from power connector Torque screws to 4 in lbs when reass...

Страница 171: ...that contain three replaceable assemblies the connector cable the circuit board and the current transformer The TCP303 and TCP404XL use a pistol style case with an integral handgrip These probes cont...

Страница 172: ...he slider works smoothly If it does not loosen the screws slightly Probe body Strain relief boot Screws Figure 7 10 Removing the strain relief boot 2 Move the probe slide assembly to the open position...

Страница 173: ...k end up and b slide the top forward off the end of the bottom half of the probe body Be careful to keep this tiny metal ball from falling out a b Figure 7 11 Removing the top half of the probe 1 Hold...

Страница 174: ...3 Before reassembling the probe be sure that the gap between the stationary and moveable core pieces is clean If necessary use isopropyl alcohol or a similar cleaning agent to clean the pieces Also cl...

Страница 175: ...ector from the circuit board 6 If you need to replace the circuit board do step 5 and then unsolder the ground wire from the circuit board to the probe body half 7 Before reassembling the probe be sur...

Страница 176: ...a 3 32 inch Allen wrench remove the eight retaining screws from the case 4 While holding the squeeze handle and slide lift the top part of the probe body off 5 Remove the slide WARNING There is a spr...

Страница 177: ...arately on probes with serial number B020000 and above For TCP303 probes with a serial number below B020000 the original trans former and cable circuit board subassemblies must be replaced with update...

Страница 178: ...the assembly Desolder the two leads from the slide switch as shown in Figure 7 17 and lift the circuit board and cable clear Reassemble the probe by doing the following 12 Before reassembling the pro...

Страница 179: ...not replace power supply Secure ribbon cable from front panel assembly to main board Replace front panel assembly LEDs do not turn on and fan works Internal power supply problem Connector loose betwee...

Страница 180: ...at is in the amplifier The firmware version may help the Technical Support Center to isolate the amplifier symptoms to a specific cause To determine the amplifier firmware version number do the follow...

Страница 181: ...Replaceable Parts...

Страница 182: ......

Страница 183: ...rmation in your order H Part number H Instrument type or model number H Instrument serial number H Instrument modification number if applicable If a part you order has been replaced with a different o...

Страница 184: ...ARTS Detail Part of Assembly and or Component Attaching parts for Detail Part END ATTACHING PARTS Parts of Detail Part Attaching parts for Parts of Detail Part END ATTACHING PARTS Attaching parts alwa...

Страница 185: ...300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual 8 3 Amplifier Replaceable Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 8 8 17 8 Figure 8 1 TCPA300 and TCPA400 replaceable pa...

Страница 186: ...ER PLASTIC TK1163 380 1157 00 8 211 0747 00 20 SCREW MACHINE 6 32 X 0 188 PNH STL CDPL T 15 TORX DR 0KB01 ORDER BY DESCRIPTION 9 348 1525 00 2 FOOT FRONT SANTOPRENE BLACK 64 DEROMETER TEXTURED TK1163...

Страница 187: ...ble 8 1 Power cord identification Plug configuration Normal usage Option number part number North America 120 V Standard 161 0066 00 Universal Euro A1 161 0066 09 United Kingdom A2 161 0066 10 Austral...

Страница 188: ...on Mfr code Mfr part number 8 2 1 011 0049 02 1 TERMINATOR BNC COAXIAL 50 OHMS 2W BNC 61162 50L 012 BNC 2 012 0117 00 1 CABLE ASSY COAX RFD 50 OHM 30 0L MALE BNC X MALE BNC 060D9 012 0117 00 3 012 160...

Страница 189: ...Tektronix part number Serial no effective Serial no discont d Qty Name description Mfr code Mfr part number 8 3 1 174 4765 00 1 CABLE ASSY CALIBRATION ADAPTER 80009 174 4765 00 2 016 1922 00 1 CASE T...

Страница 190: ...Amplifier Replaceable Parts 8 8 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 191: ...TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual 8 9 Current Probes Replaceable Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Figure 8 4 TCP305 and TCP312 replaceable parts...

Страница 192: ...0 7 213 0087 00 2 SCREW TPG TC 2 32 X 0 5 TYPE BT PANHEAD STEEL CADIUM PLATED POZIDRIVE 3M099 ORDER BY DESCR 8 335 0906 00 1 MARKER IDENT PROBE IDENT LABEL TCP305 80009 335 0906 00 335 0907 00 1 MARKE...

Страница 193: ...Current Probes Replaceable Parts TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual 8 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Figure 8 5 TCP303 replaceable parts...

Страница 194: ...0 5 SCH STL CD PL HEX REC 93907 ORDER BY DESCRIPTION 10 050 3663 XX1 B010000 B019999 1 PROBE SUBASSY TESTED BOARD AND CABLE TCP303 80009 050 3663 XX 174 4962 00 B020000 1 CABLE ASSEMBLY TCP303 RF COA...

Страница 195: ...Current Probes Replaceable Parts TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual 8 13 A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Figure 8 6 TCP404XL replaceable parts...

Страница 196: ...4XL 80009 120 1962 01 6 204 0712 02 1 BODY HALF PROBE RIGHT W CONTACTS TK1163 ORDER BY DESCRIPTION 7 211 0093 00 6 SCREW CAP 4 40 X 0 75 SCH STL CD PL HEX REC 0KB01 ORDER BY DESCRIPTION 8 348 0023 00...

Страница 197: ...SW MILLIKAN WAY BEAVERTON OR 97005 TK2565 VISION PLASTICS INC 26000 SW PARKWAY CENTER DRIVE WILSONVILLE OR 97070 05469 BEARINGS INC 3634 EUCLID PO BOX 6925 CLEVELAND OH 44101 3M099 PORTLAND SCREW COMP...

Страница 198: ...Current Probes Replaceable Parts 8 16 TCPA300 400 Amplifiers and TCP300 400 Series Current Probes Instruction Manual...

Страница 199: ...Glossary and Index...

Страница 200: ......

Страница 201: ...flow of the positive charge in a conductor Conventional current flow is from positive to negative The arrows on current probes point in the direction of conventional current flow Conventional current...

Страница 202: ...easurements insertion impedance The equivalent series impedance introduced to a test circuit when the current probe is clamped around a test conductor magnetic susceptibility A figure expressing the a...

Страница 203: ...apter 1 5 3 9 Current limitations amp second product 3 4 maximum continuous 3 4 maximum pulsed 3 4 D DC coupling 2 4 3 3 DC current loops constructing 5 4 DC gain adjust optimizing 2 5 DC LEVEL contro...

Страница 204: ...nnector 2 5 PROBE OPEN indicator 2 3 Probes coupling 3 3 degaussing demagnetizing 1 11 2 2 description 1 2 disassembly 7 13 extending the current range 3 8 increasing the current limit 3 8 maintenance...

Страница 205: ...al Index 3 disassembly 7 3 front panel display check 5 5 TEKPROBE to TEKPROBE interface cable 1 8 Termination 50 ohm feedthrough 1 8 Test Record Performance Verification TCP303 5 42 TCP305 5 29 TCP312...

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