P6243 1 GHz 10X Active Probe Service Manual
Contents
1. 10 Q 100 Hz 1kHz 10kHz 100kHz 1MHz 10MHz 100 MHz 1 GHz Figure 3 Typical Input Impedance vs Frequency P6243 Service Manual 5 Specifications 15V 10 V 5V 0V 1 MHZ 10 MHZ 100 MHZ 1 GHz Figure 4 Typical Non Destructive Peak Voltage Derating vs Frequency 6 P6243 Service Manual Specifications Table 3 Physical Characteristics Net Weight Cable Length 63 8 0 2 25 ounces 1 3 meter 4 3 ft Table 4 Environmental Characteristics Operating Temperature Non operating Temperature Humidity Packaged Product Vibration and Shock Altitude P6243 Service Manual 0 to 50 C 32 F to 122 F The environmental exposure is the procedure stated in Tektronix Design Standard 062 2847 00 for Class 5 equipment 40 C to 71 C 40 F to 160 F The environmental exposure is the procedure stated in Tektronix Design Standard 062 2847 00 for Class 5 equipment The environmental exposure is the procedure stated in Tektronix Design Standard 062 2847 00 for Class 5 equipment The packaged product qualifies under the Distribution Cycle 1 Assurance Level Il for packaged products 0 20 165 Test 2 for Warehouse and Vehicle Stacking Compression is omitted Tektronix standard 062 2858 00 Rev B Class 5 Operating 4 572 m 15 000 ft Non Operating 15 240 m 50 000 ft2. Specifications Table 5 Certifications and Compliances EC Declaration of Meets the intent of Directive 89 336 EEC for Electromagnetic Conformity Compatibility Compliance was demonstrated to the following specifications as listed in the official Journal of the European Communities EN 50081 1 Emissions EN 55022 Class B Radiated and Conducted Emissions EN 60555 2 Power Harmonics EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge IEC 801 3 RF Radiated IEC 801 4 Fast Transients IEC 801 5 Surge FCC Compliance Emissions comply with FCC Code of Federal Regulations 47 CFR Part 15 Subpart B Class A 8 P6243 Service Manual ES Operating Basics Please follow these operating guidelines to get optimum performance from your P6243 Active Probe Maximum Non destructive Input Voltage The P6243 Active Probe is electrically protected against static voltage however applying voltages above its design limits may damage the probe tip amplifier Please refer to the Specifications section of this manual for the maximum non destructive input voltage and frequency derating information Input Linear Dynamic Range The probe head amplifier used by the P6243 Active Probe has a limited linear operating range To keep the input linearity error less than 4 you must limit the signal input voltage to 8 V DC peak AC NOTE The probe can tolerate input voltages of 15 V without damage however the linearity error specification d
3. 2 000 V This setting will be referred to later as Vmax 7 Record the value measured by the multimeter as M1 With the 10X attenuation of the probe the voltage measured will be about 0 200 V 8 Set the power supply to 2 000 V This setting will be referred to later on as Vmin 9 Record the value measured by the multimeter as M2 With the 10X attenuation of the probe the voltage measured will be about 0 200 14 P6243 Service Manual Performance Verification NOTE If you unable to set the power supply precisely record the settings displayed on the power supply determine the absolute difference Vmax Vmin difference Divide the difference by 10 to account for the ideal attenuation factor of the probe For example 0 42 is the difference between 2 200 and 2 000 divided by 10 Use this calculated value in place of the denominator of the formula that follows 10 Determine the percent error by using the formula below Error pce 144 1 100 calculated error should be lt 2 NOTE unacceptable error value may result if a low tolerance termination is substituted for the recommended termination P6243 Service Manual 15 un Maintenance This section details the maintenance repair and troubleshooting procedures for the P6243 Replacing TEKPROBE Interface Pins TEKPROBE interface pins can stick and fail to make contact after time Periodically che
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5. TEKPROBE interface 350 ps Specifications Table 2 Typical Electrical Characteristics Freguency Response probe only See Figure 1 Linear Input Dynamic Range 8Vto 8V Equivalent to 0 8 V to 0 8 V at the output of the probe Linearity 4 or less of dynamic range Linearity Error vs VIN See Figure 2 Input Resistance 1 MQ at DC See Figure 3 Input Capacitance 1 0 pF Non Destructive Input Voltage Range 15 V to 15 V DC peak AC See Figure 4 on page 6 DC Offset Drift 100 uV C or less at output of probe 1 mV C or less displayed on screen with TEKPROBE interface Delay Time 5 3 ns 0 2 ns 2 P6243 Service Manual Specifications 2 dB 1 dB 0 dB 1dB 2 dB 3 dB 4 dB 5 dB 6 dB 7 dB 8 dB 1MHz 10 MHz 100 MHz 1GHz Figure 1 Typical Frequency Response P6243 Service Manual 3 Specifications 150 mV 100 mV 50 mV 0 mV Display Error 50 mV 100 mV 150 mV 20V 10V 0 10 20V Figure 2 Typical Linearity Error vs 4 P6243 Service Manual Specifications 10 MQ 1 MQ 100 10 KQ 1 kQ 100 Q
6. 8 NOIL VHOdHOO 40 AIG 211016 HO NOLH3AV38 NVMITIIIN MS 18101 SSOIAYAS SSANISNE XOU3X 888031 epo diz eyeis I apo HIN YAYNLOVANNVIN OL YAEINNN 3002 XAGNI 550892 P6243 Service Manual 28
7. FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Ei Table of Contents General Safety Summary iii Specifications su oia Yea X ERU Ed Ra Va Nu qe Iq yo ow 1 Operating Basics su 9 Maximum Non destructive Input Voltage 9 Input Linear Dynamic Range 9 Theory of Operation 10 Probe Head and Cable Assembly 10 Compensation Ss ers aet pte ex reale 11 Performance Verification 12 Equipment Required ueste e cet whee hace es 12 Equipment sed autas 12 Zero sure ue e ie OR e ER ete SR S 13 DC Attenuation Accuracy 13 Maintenance UOCE 16 Replacing TEKPROBE Interface 16 Removing and Replacing the Compensation Box Covers 17 Removing and Replacing the TEKPROBE Interface Collar 19 Inspection and Cleaning 2 0 20 Replacement Parts o een 20 Preparation for Shipment ans sun 20 Replacesble Parts vc usa a CR C RR OR 21 P6243 Service Manual i Table of Contents List of Figures Figure 1 Typical Frequency Response Figure 2 Typical Linearity Error vs VIN Figure 3 Typical In
8. ROBE Interface The TEKPROBE interface provides a communication path between the probe and the oscilloscope Contact pins provide power signal and data transfer for the probe identification EEPROM Figure 6 shows the TEKPROBE interface pin functions Refer to the service documentation of your oscilloscope for more detailed specifications Figure 6 TEKPROBE Interface P6243 Service Manual 11 mair Performance Verification This section contains the procedures for verifying the performance of the P6243 Active Probe Equipment Required Table 6 Equipment Required for Performance Verification Item Description Requirement Recommended Example Oscilloscope Tektronix TDS 744A TEKPROBE Power Supply Tektronix 1108 DC Power Supply Tektronix PS281 DC Voltmeter Tektronix CDM250 Feedthrough Termination 011 0129 00 BNC to BNC coaxial cable 012 1342 00 BNC to Banana adapter 103 0090 00 Banana Equipment Setup 1 Connect the probe to the oscilloscope 2 Connect a Y lead adapter with KlipChip adapters attached to the P6243 probe head Turn on the oscilloscope and enable the channel Turn on the power supply and set to 2 00 VDC Turn on the 1103 power supply An K a Allow 30 minutes for the eguipment to warm up 12 P6243 Service Manual Performance Verification NOTE If your oscilloscope has a probe calibration routine run it before making any of the following checks Refer to the instructio
9. Service Manual Tektronix P6243 1 GHz 10X Active Probe 070 9409 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 www tektronix com Copyright Tektronix Inc rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 500 Beaverton OR 97077 and TEKPROBE are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a 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 desi
10. ce Manual 21 Replaceable Parts NOTE Parts illustrated with dashed lines are not replaceable RR Mf NN 2212 WW 444 13 334 NNNN NS LO 42273 e amp o N 8 S wo 8 N DW e V m e 22 6243 5 Manual Replaceable Parts 81001 3SV33u 00 9 29 008 60008 S T38v 1 M WO LLOS ANY dO LXOS 00 9 2 002 g 10 1298 18 60008 1 109 031342 1 00 10 2296 161 Z 1610 402 60008 AYY9 3A04 S8V ON8 NNO 9IIITIIHS 1610 502 294 60008 31935 501441 gt 012 9 6 1 lt 19 134 98 eb29d e ON Med IN uonduoseq 5551 AD 10980 ON Med ON ON ees xluo1pjaL 9 614 23 P6243 Service Manual Replaceable Parts a e AM Figure 13 P6243 Standard Accessories 24 P6243 Service Manual Replaceable Parts 01 6 0 0 888031 vc9d dQ HsINVdS NOLLOQH LSNEHO31 IVONVIN L 2136 0 0 XX LLP6 0 0 88231 Er294 40 16 1 XX 1176 020 0196 020 888031 94 4 16 1 L 01 6 0 0 60 6 0 0 888231 29d dO SOIANAS HOALTWANVIN 6086 020 8096 020 880031 57694 16 1
11. ck to see that each of the interface pins move freely and fully extends out of the interface If any pin fails to move freely and fully extend it should be replaced To remove a TEKPROBE interface pin firmly grasp the pointed tip with pliers and pull the pin out of the connector See Figure 8 No tools are required to install a replacement pin Insert a new pin into the connector socket as far as possible using finger pressure If necessary seat the pin into the connector by pressing the tip gently but firmly against a hard surface such as a wood block or table top Figure 8 Replacing TEKPROBE Interface Pins 16 P6243 Service Manual Maintenance Removing and Replacing the Compensation Box Covers Follow these steps to open the compensation box 1 Press the optional release tool pins into the compensation box cover catches and gently lift the cover off a small distance Refer to Figure 9 2 Hold the open edge apart and use the tool to open the other side of the compensation box 3 With both sides of the box open gently separate the two halves of the compensation box Catches Figure 9 Removing the Compensation Box Covers P6243 Service Manual 17 Maintenance replace the covers follow these steps 1 Align the TEKPROBE interface and the strain relief notches with the tabs on the cover Refer to Figure 10 2 Press the cover catches so that the cover be lowered 3 Slide the tab int
12. d 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 These symbols may appear on the product AN m DANGER Protective Ground ATTENTION Double High Voltage Earth Terminal Refer to Manual Insulated P6243 Service Manual Specifications The warranted specifications in Table 1 apply to a P6243 Active Probe when the probe and the host instrument are allowed to warm up for 20 minutes before measurements are taken The warranted specifications that appear boldface type are specifications checked in the Performance Verification section of the service manual The specifications in Tables 2 through 5 are provided as general information for your convenience CAUTION Do not apply voltages beyond the non destructive input voltage range to the probe Damage to the probe or circuit under test may result Refer to Figure 4 on page 6 Table 1 Warranted Electrical Specifications Analog Bandwidth probe only at 20 C to 30 C 68 F to 86 F DC Attenuation Accuracy probe only at 20 C to 30 C 68 F to 86 F Output Zero at 20 C to 30 C 68 F to 86 F Rise Time probe only at 20 C to 30 C 68 F to 86 F P6243 Service Manual gt 1 0 GHz 10 1 2 10 mV or less at output of probe 100 mV or less displayed on screen with
13. gnated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d 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 IN LIEU OF ANY OTHER WARRANTIES EXPRESS 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
14. ide the range specified for that terminal 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 conditions 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 Use Proper Power Source Do not operate this product from a power source that applies more than the voltage specified 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 The cloth must be dampened with either isopropyl alcohol or a mild detergent and water solution Do not use any other chemicals or abrasives to clean the probe P6243 Service Manual iii General Safety Summary Safety Terms and Symbols Terms in This Manual These terms may appear in this manual N WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you rea
15. n manual of the oscilloscope for more information Output Zero Use this procedure to verify the output zero of the probe is within specified limits 1 4 Ground the probe tip by connecting the probe tip to the probe ground socket Connecting the two KlipChip adapters together is recommended Set the oscilloscope input coupling channel to ground and adjust the vertical position to center screen Set the oscilloscope input coupling channel to DC and set the vertical scale to 100 mV division Measure the displayed DC level The displayed DC level should be 0 00 V 100 mV 10 mV when measured directly without the probe attenuation factor DC Attenuation Accuracy Use this procedure to verify the DC attenuation accuracy of the probe Before beginning read the procedure through completely 1 2 Connect the test equipment as shown in Figure 7 Attach the probe to interface on the 1103 power supply Set the 1103 offset VAR OV to OV Set the multimeter to read DC volts P6243 Service Manual 13 Performance Verification 5 Connect the probe tip and ground to the power supply using the Y lead and KlipChip adapters 1103 Power Supply Digital Multimeter Power Supply 50 2 Precision BNC to Dual Terminator Banana Adapter Figure 7 P6243 DC Attenuation Accuracy Setup 6 Set the power supply to
16. n for Shipment If the original packaging is unfit for use or not available use the following packaging guidelines 1 Use a corrugated cardboard shipping 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 a plastic bag or wrap to protect it from dampness 3 Place the probe into the box and stabilize it with light packing material 4 Seal the carton with shipping tape 20 P6243 Service Manual AUN Replaceable Parts This section contains list of the replaceable for 6243 Active Probe Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are available from or through your local Tektronix Inc service center or representative Changes to Tektronix instruments are sometimes made to accommo date 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 Instrument type or model number m Instrument serial number 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 P6243 Servi
17. o the notch 4 Firmly press the pieces together until the cover catches snap into place Figure 10 Replacing the Compensation Box Cover 18 P6243 Service Manual Maintenance Removing and Replacing the TEKPROBE Interface Collar To remove the TEKPROBE interface collar firmly grasp the compensation box body with one hand and the TEKPROBE interface collar with the other hand Firmly pull the interface collar off To replace the collar first note the pin configuration on the compensation box and their holes in the interface collar The group of three pins fit through the smaller of the two holes in the interface collar See Figure 11 Align the tab to the slot and gently press the two pieces together See Figure 11 Once installed the TEKPROBE collar should rotate freely to lock and unlock Figure 11 Replacing the TEKPROBE Collar P6243 Service Manual 19 Maintenance Inspection and Cleaning prevent damage to probe materials avoid using chemicals that contain benzine benzene toluene xylene acetone or similar solvents Do not immerse the probe or use abrasive cleaners Dirt may be removed with a soft cloth dampened with a mild detergent and water solution or isopropyl alcohol Replacement Parts Refer to the Replaceable Parts section for a list of customer replacement parts Due to the sophisticated design of the P6243 there are no user replaceable parts within the probe Preparatio
18. oes not apply to input voltages exceeding 8 V DC peak P6243 Service Manual 9 Theory of Operation Probe Tip Figure 5 Probe 10 There are no user replaceable parts within the probe or the compensation box however this theory of operation is provided to assist you in isolating failures to either the probe or the host oscilloscope Refer to Figure 5 for a simplified schematic of the probe Probe Head Compensation Box Oscilloscope EEPROM Signal Out Probe ID Out Clock In Probe Tip Amplifier 5 V 5V Ground Probe TEKPROBE Cable Interface P6243 Simplified Schematic Diagram Head and Cable Assembly The probe head assembly contains an active amplifier circuit that buffers and amplifies the input signal The amplifier receives power from the compensation box assembly via the cable assembly All signal amplification and buffering is performed in the probe head assembly No further amplification takes place in the compensation box P6243 Service Manual Compensation compensation box contains the following circuits m Probe identification EEPROM m TEKPROBE interface Probe Identification EEPROM The probe identification EEPROM is used to configure the oscilloscope to the probe The EEPROM receives a clock input from the oscilloscope and information about the probe is passed to the oscilloscope TEKP
19. put Impedance vs Frequency Figure 4 Typical Non Destructive Peak Voltage Derating vs Figure 5 6243 Simplified Schematic Diagram Figure 6 TEKPROBE Interface Figure 7 P6243 DC Attenuation Accuracy Setup Figure 8 Replacing TEKPROBE Interface Pins Figure 9 Removing the Compensation Box Covers Figure 10 Replacing the Compensation Box Cover Figure 11 Replacing the TEKPROBE Figure 12 P6243 Replaceable Parts Figure 13 P6243 Standard Accessories Figure 14 P6243 Optional Accessories List of Tables Table 1 Warranted Electrical Specifications Table 2 Typical Electrical Characteristics Table 3 Physical Characteristics bis aso ee Table 4 Environmental Characteristics Table 5 Certifications and Compliances Table 6 Equipment Required for Performance Verification P6243 Service Manual General Safety Summary 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 Injury Precautions Avoid Electric Overload To avoid electric shock or fire hazard do not apply a voltage to a terminal that is outs
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