P7360A and P7340A 6 GHz and 4 GHz Z-Active™ Differential
Contents
1. 2 181 500 Opie resistors are ideal for connecting to small 12 gd pesos mE ee zo pea circuit board vias and fine pitch circuitry 3 0 6 9 12 100 MHz 1GHz 10 GHz Frequency Hz 100 K 1 ifferential min 290 2 X Impedance Ohms Single Ended Zmin 240 100 KHz 1MHz 10 MHz 100 MHz 16Hz 10 GHz Frequency 20 P7360A and P7340A Z ActiveDifferential Probes Specifications Short Flex Large Resistor 1 8 W View Setup Utiies Hepie OO m Tip Clip Assembly Elka Aham EEE Aca Mode Average z Tiigfirtemal Clock Afm BE Tektronix part number 020 2601 XX m Prete sau cx nn wn nn E Sene aeli zw az C3 50 00mV div Measurement Bort Bandwidth gt 6 0 GHz 10 90 Rise time lt 70 ps 20 80 Rise time 50 ps Loading Zin 290 to 6 GHz High bandwidth and good signal fidelity idea for connecting to large features EFT aE concen 6 dB o 1GHz Frequency Hz T ifferential X Impedance Ohms Single En2. 7360 7340 i DMM 80A03 probe jc z 9 Oo BNC SMA Long Flex Large adapter Resistor 1 8 W Tip Clip Assembly 50 Q Precision BNC to dual termination BNC cable banana adapter Figure 19 Setup for the output offset zero test 4 Set the multimeter to read DC volts 5 Verify that the output voltage is 0 V 3 0 mV for both the 5X and 25X attenuation settings 6 Record the results on the test record P7360A and P7340A Z ActiveDifferential Probes Performance Verification DC Gain Accuracy Gain Check at 5X Attenuation This test checks the DC gain accuracy of the probe at the 5X and 25X attenua tion settings 1 Set the probe attenuation to 5X 2 Connect the probe with a Tip Clip Assembly to the power supply as shown in Figure 20 Monitor the source voltage with one of the DMMs DMM V in TDS CSA 8200 Series Oscilloscope Banana lead c c S P 2559 5 2 o 9 Black Red P7360A P7340A probe 80A08 D ao Test gt s9s9 7 Test leads 2 w mini plunger BNC SMA Long Flex Small adapter Resistor 1 8 W BNC to dual Tip Clip Assembly banana adapter 50 Q Precision termination BNC cable Figure 20 DC Gain Accuracy setup 3 Set the power supply to approxim
3. Figure 11 Z Active probe dynamic range verses frequency 5X GAM i adesse bte ex EES UR ee e dL ares Figure 12 Z Active probe dynamic range verses frequency 25X gain setting hy e a oe ee uw Figure 13 P7380A P7360A and P7340A dynamic range SX San Setting ieu sea ede esis eae eT ee ed Figure 14 P7380A P7360A and P7340A dynamic range 25X gain setting cece cece ce eee cere eee enhn nnn Figure 15 TekConnect to SMA Adapter Figure 16 Probe Calibration Fixture Figure 17 Adapter Fixture Figure 18 Preliminary test setup Figure 19 Setup for the output offset zero Figure 20 DC Gain Accuracy setup Figure 21 Reverse the power supply polarity on the probe inputs Figure 22 Handheld Adapter and calibration fixture Figure 23 PPM203B Articulated Arm with the Handheld Adapter Figure 24 Test system rise time setup Figure 25 Setting the TDR parameters Figure 26 Test probe rise time setup d 10 15 15 16 17 18 18 19 31 31 32 33 34 35 36 38 38 39 40 41 7360 and P7340A Z ActiveDifferential Probes Table of Contents List of Tables Table 1 Offset ranges wis terere ex Re ham ert Re 9 Table 3
4. Exercise care when handling the articu lated pins 162 0 80 S SINE 6 a 0 B 3 6 9 1 100 MHz 1GHz 10 GHz Freauencv Hz 100K w E amp 70K o n Q tk Differential Zmin 220 Q E j HH 100 100 KHz 1 MHz 10 MHz 100 MHz 1GHz 10 GHz Frequency P7360A and P7340A Z ActiveDifferential Probes 27 Specifications 28 P7360A and P7340A Z ActiveDifferential Probes _ Py ae Performance Verification The following procedures verify the warranted Output offset voltage DC attenuation accuracy and Rise time specifications of the P7360A and P7340A Differential Probes The recommended calibration interval is one year CAUTION To avoid ESD damage to the probe always use an antistatic wrist strap provided with your probe and work at a static approved workstation when handling the probe Equipment Required Table 6 lists the equipment required for the performance verification procedure The types and quantities of connectors depends on the specific equipment you use Table 6 Test equipment Description and quantity Performance requ
5. 7 Adjust the oscilloscope horizontal and vertical position controls to display a signal similar to that shown in Figure 24 8 Set the oscilloscope horizontal scale to 100 ps div and center the waveform 9 Use the oscilloscope measurement capability to display rise time Increase the stability of the pulse edge measurement by using averaging if available Rise time is measured from the 10 and 90 amplitude points on the waveform Rise time can be measured using the automatic measurement capability of the TDS8200 series oscilloscopes Record the system rise time as 1 This value is used to calculate both the 5X and 25X probe rise times The following steps instruct you to assemble the test setup that includes the probe as shown in Figure 26 The system and probe rise time ts p that you measure in step 17 is used to calculate the probe rise time t in step 18 TDS CSA 8000 Series Oscilloscope 000000009 00 CH 7 and 8 module slot 0000 O o CH 4 measurement channel P7360A P7340A TekConnect and probe 80E0X sampling c gea module 50 Q Termination gt Variable Spacing Tip Clip MN 5 lt Calibration fixture SMA male to male connector between 80E04 and calibration fixture underneath the probe lt 80 04 TDR pulser Sampling mod
6. Theory of Operation Cpl E Zoo 100 Q Zoe 190 Q 3 7 air c Z0 Zog 190 Td 12 1 ps Z0 2 ZooZog Zoe Zoo 211 Td 12 1 ps 20 Zog 190 Td 12 1 ps TD 12 1 ps 3 7 mm in air Figure 5 Transmission line equivalent Cg C14 C12 2 31 9 ff am gt Cg 0 5 12 I Lp Ls 1 76 nH Cg 0 5C 19 144ff M L42 0 545 nH T 144ff Cg C11 C12 2 4 31 9ff gt gt Figure 6 Lumped element equivalent P7360A and P7340A Z ActiveDifferential Probes Theory of Operation Electrical Effects of Accessories The Tip Clip accessories included with your probe help connect to different types of components The Tip Clip accessories are designed to provide optimum performance as a system Each Tip Clip accessory has distinct characteristics While these accessories make connections easier be aware that the Tip Clip accessory you choose affects the signal you are measuring depending on a variety of factors including signal frequency source impedance and lead length Refer to Specifications on page 13 for more Tip Clip information 8 P7360A and P7340A Z ActiveDifferential Probes Reference This section contains important reference information about differential measurements and how to increase measurement accuracy Single Ended Measurements
7. Warranted electrical characteristics 13 Table 4 Typical electrical characteristics 14 Table 5 Typical mechanical characteristics 16 Table 6 Nominal electrical characteristics 17 Table 7 Test equipment 29 Table 8 Differential probe compatibility issues 45 P7360A and P7340A Z ActiveDifferential Probes iii Table of Contents iv P7360A and P7340A Z ActiveDifferential Probes a General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures While using this product you may need to access other parts of the system Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system To Avoid Fire or Connect and Disconnect Properly Connect the probe output to the measurement Personal Injury instrument before connecting the probe to the circuit under test Disconnect the probe input from the circuit under test before disconnecting the probe from the measurement instrument Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings inform
8. 1 8 W Tip Clip Assembly Tektronix part number 020 2603 XX Bandwidth gt 5 0 GHz 10 90 Rise time lt 70 ps 20 80 Rise time lt 50 ps Loading Zin 260 Q to 6 GHz Good compromise between ease of use and maximum performance when attaching to larger devices 3 58 PM 2 9 2006 6 dB e 12 100 MHz 1 GHz 10 GHz Frequency Hz T 8 Differential 5 Zmin 260 2 41K una SE Single Ended 11 00 LJ Zmin 2509 100 KHz 10 MHz 100 MHz 40 GHz Frequency P7360A and P7340A Z ActiveDifferential Probes 23 Specifications Long Flex Small Resistor Vew Setup Ules Helge Lh Tip Clip Assembly al gt EEE Mode Average Tiig intemal Clock BE Tektronix part number 020 2604 XX als C3 50 00m V div Bandwidth 4 0 GHz 10 90 Rise time 130 ps 20 80 Rise time 60 ps Loading Zin 360 Q to 6 GHz Extended reach with good Step Re sponse Useful for connecting to hard to reach small vias and fine pitch circuitry Conveniently sized to fit between DIMM modules Not recommended for signals faster than 4 GHz 4 29 PM 2 9 2006 6 12 100 MHz 1 GHz 10 GHz Fr
9. 2 020 2604 XX Loctite 444 12292 1 Nine digit part numbers are Tektronix part numbers 2 Standard accessories included with the probe m Optional Tool A torque wrench helps to ensure reliable connections by meeting the nominal torque values listed in these instructions P7360A and P7340A Z ActiveDifferential Probes Performance Verification Special Adapters Required TekConnect to SMA Adapter Probe Calibration Fixture Some of the adapters listed in Table 6 are available only from Tektronix These adapters are described on the following pages The TekConnect to SMA Adapter Tektronix part number TCA SMA lets you connect an SMA cable to a TekConnect input See Figure 15 Connect and disconnect the adapter the same way as you do the probe This adapter is an oscilloscope accessory that can be used for measurement applications as well as these performance verification procedures Figure 15 TekConnect to SMA Adapter Some of the procedures in this manual use a probe calibration fixture Tektronix part number 067 0419 XX The calibration fixture provides a means to test the probe for common mode CM and differential mode DM measurements SMA connectors on the front and back of the fixture allow you to apply stimulus signals Figure 16 Probe Calibration Fixture P7360A and P7340A Z ActiveDifferential Probes 31 Performance Verification PPM203B Articulated Arm 32 and Pro
10. A differential probe for example the P7360A and P7340A Differential Probes can be used for single ended measurements within the limits of its dynamic and offset voltage ranges Single ended probes such as the P7240 typically have a wider offset range than corresponding differential probes see Table 1 Table 1 Offset ranges Probe DC Offset 5X Dynamic DC Offset 25X Dynamic examples Range 5X Range 25X P7360A and 4 V 3 V 2 Vpp 14 V 3 V 5 Vpp P7340A Differen tial Probes Differential probes are ideal for a class of single ended measurements where the reference voltage is not ground m SSTL 1 2 VTT VREF Vpp 2 m PECL VREF Vcc 1 3 To measure single ended signals in this class connect the negative input of the differential probe to VREF A differential probe in these applications displays the true signal despite any AC or DC variation in Vggr from its nominal value While a single ended probe displays the signal plus the variation in VREF Differential probes can also be used to make ground referenced single ended measurements on either single ended signals or differential signals like PCI Ex press or Serial ATA To measure ground referenced single ended signals connect the negative input of the differeential probe to ground Single ended measurement on differential signals are used to measure common mode voltage and check for differential signal symmetry P7360A and P7340A Z ActiveDifferential Probes 9
11. Description Dimensions compensation box 107 mm x 41 mm x 26 mm 4 2 in x 1 6 in x 1 0 in Dimensions probe head 19 43 mm x 3 30 mm x 7 6 mm 0 765 in x 0 130 in x 0 300 in Dimensions cable length 1 5 m 60 in from the probe head to the compensation box Unit weight 1 406 kg 3 1 lbs probe accessories and packaging Large Resistor Flex Small Resistor Flex Tip Clips 20 mil dia wire Tip Clips 8 mil dia wire 197 mm t 508 mm F BM 50 in bis em 26 0 mm 508mm y cT 1 00 in 20in 1 25 4 mm pon 25 4 1 00 in 1 00 in Up 124 46 490 in 4 77 mm 188 89 78 mm i 3 53 in 3 30 mm 130 in 19 43 765 in 7 6 mm 300 in Figure 10 Probe and Tip Clip dimensions 16 P7360A and P7340A Z ActiveDifferential Probes Specifications Nominal Characteristics Nominal characteristics Table 5 describe guaranteed traits but the traits do not have tolerance limits Table 5 Nominal electrical characteristics Characteristic Description Input configuration Differential two inputs and Output coupling DC Attenuation settings 5X and 25X Termination Terminate output into 50 PSEA P7340A P7360A Differential Input Voltage Vpp 100 Figure 11 Z Active probe dynamic range verses frequency 5X gain setting P7360A and P7340A Z ActiveDifferential Probes RE 1000 Frequen
12. the attenuation on the probe to 25X 2 Repeat steps 2 through 9 but in step 3 set the power supply to 1 5 V 3 Verify that the gain is 0 04 2 0 4 Record the calculated gain on the test record P7360A and P7340A Z ActiveDifferential Probes Performance Verification Rise Time This procedure verifies that the probe meets the rise time specification Two rise times are measured the test system alone and the test system with the probe included The probe rise time is calculated using the two measurements This test uses the TDR function of the 80E04 sampling head as a fast rise time signal source The measurements are made using an 80A03 TekConnect probe interface Although the following procedure assigns the TDR and measurement functions to specific oscilloscope channels any valid channel combination can be used However the TDR function is only available on 80E04 sampling heads This test checks both of the probe attenuation settings Review Rise Time Measurements Using the Probe Calibration Fixture on page 38 if you have not used a calibration fixture before P7360A and P7340A Z ActiveDifferential Probes 37 Performance Verification Rise Time Measurement 1 Connect the fixture to the pulse generator using an SMA adapter using the Probe Calibration Fixture Connect the 50 termination included with the fixture to the unused SMA connector 3 Probe the calibration fixture using the Handheld Adapter see Figu
13. 0 ps 20 80 Rise time 50 ps Use the Square Pin Tip Clip assembly for probing 0 025 in diameter square pins spaced 0 1 in on center Square pins are not an ideal transmission path for high speed electrical signals Square pins are not recommended for signals faster than 100 ps or 3 GHz 26 File Edit View Setup Utilities Help Triggered Toons BA 224 Mode Average Tig lntemal Clock m AE BE Pulse Amplitude fo nnn P 2 bn f za El Feo omy C1 100 A S 210 0mV 500 Opsidiv aj 100 E ae main 500 0000 ES 46 600n Em gec 1 33 PM 5 4 2006 Square Pin Tip Clip assembly measuring differential 100 ps risetime signal with 0 34 in long square pins 12 A 1 00E 08 1 00E 09 1 00E 10 Frequency Hz Square Pin Tip Clip assembly frequency response with 0 34 in long square pins P7360A and P7340A Z ActiveDifferential Probes Specifications Variable Spacing Tip Clip Assembly Tektronix part number 020 2596 XX ETE 2 n s end Pace Prete s nn wo c oe mr we nno e ee Bt swf az Bandwidth 6 GHz 0 i 9 PERCY Cf Tr 10 90 70 ps 20 80 50 ps Loading 220 to 6 GHz Use the Variable Spacing Tip Clip assembly for probing test points spaced from 0 020 in to 0 180 in apart
14. 5 C 167 F Allow sufficient time for the probe to cool before handling P7360A and P7340A Z ActiveDifferential Probes 13 Specifications Typical Characteristics Typical characteristics Tables 3 and 4 describe typical but not guaranteed performance Table 3 Typical electrical characteristics Characteristic Description 104 KQ 2 Differential input resistance DC coupled Common mode input resistance DC coupled 52 KQ 1 3 0 V to 4 V Differential offset range Noise Input impedance lt 31 nV Hz 5X lt 75 nV Hz 25X See Figure 9 and Tip Clip assemblies starting on page 20 for more detail information Bandwidth See Tip Clip assemblies starting on page 20 for more detail information 2 0dB 3 dB for an ambient temperature range of 20 C to 30 C Small signal rise time See Tip Clip assemblies starting on page 20 for more detail information Ambient temperature range of 20 C to 30 C Common mode rejection ratio See Figure 8 50 dB DC 1 MHz lt 35 dB 1 MHz 1 GHz x20 dB 1 GHz 6 GHz Maximum non destructive input voltage 15 Voc peak AC between each input or between either probe inputs and ground Dynamic Range 1 V at attenuation setting of 5X 2 5 V at attenuation setting of 25X Operating Voltage Window Linearity 3 0 V to 5 0 V at 5X or 25X 1 V at 2 at attenuation setting of 5X 0 75 V at 1 at attenuation setting of
15. 5X 0 5 V at 0 5 at attenuation setting of 5X 3 V at 2 at attenuation setting of 25X 2 5 V at 1 at attenuation setting of 25X 1 5 V at 0 5 at attenuation setting of 25X DC offset drift 50 uV C at the output of the probe 0 25 mV C displayed on screen with the TekConnect interface 5X 1 25 mV C displayed on screen with the TekConnect interface 25X DC voltage measurement accuracy 2 of input 2 of offset 15 mV 5 mV 5X 2 of input 296 of offset 75 mV 25 mV 25X 14 P7360A and P7340A Z ActiveDifferential Probes Specifications Differential Mode Gain bX X 14 24 34 dB CMRR a rail 64 a WAG INA AUT Common Mode gt Gain 5X 74 84 50 MHz Frequency 10 GHz Note Short Flex Small Resistor Tip Clip assembly graph Figure 8 Typical Common Mode Rejection Ratio 5X attenuation EN Differential Zmin 290 Q Impedance Ohms Single Ended ill Zmin 240 100 KHz 1MHz 10 MHz 100 MHz 16Hz 10 GHz Frequency Note Short Flex Small Resistor Tip Clip assembly Figure 9 Typical differential input impedance versus frequency P7360A and P7340A Z ActiveDifferential Probes 15 Specifications Table 4 Typical mechanical characteristics Characteristic
16. Condition The LEDs on the probe alert you to error or status conditions affecting the probe If the probe LEDs flash or otherwise appear to be malfunctioning an error condition may exist Call your Tektronix representative for service When the probe is functioning correctly there is a quick flash of the LEDs on the probe just after connecting to the oscilloscope Replacement Parts There are no user replaceable parts within the probe Refer to your product user manual for a list of replaceable accessories for your probe If your probe does not meet the specifications tested in the Performance Verification you can send the probe to Tektronix for repair Follow the procedure on page 46 to prevent damage to the probe during shipping P7360A and P7340A Z ActiveDifferential Probes 45 User Service Preparation for Shipment If the original packaging is unfit for use or not available use the following packaging guidelines 1 Use 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 Put the probe into an antistatic bag or wrap to protect it from dampness Place the probe into the box and stabilize it with light packing material Seal the carton with shipping tape de oie cds Refer to Contacting Tektronix at the front of the P7313 P7380 and P7360 5X 25X Differential Probes User Manual for the shippi
17. Reference Differential Measurements Common Mode Rejection 10 Ratio A differential probe is optimized to make measurements of high speed differen tial signals Differential signals are formed from two complementary signals with a common reference voltage See Figure 7 Devices designed for differential measurements avoid problems presented by single ended systems These devices include a variety of differential probes differential amplifiers and isolators A differential probe is a differential amplifier Figure 7 which is used to make differential measurements that reject any voltage that is common to the inputs and amplifies any difference between the inputs Voltage that is common to both inputs is often referred to as the Common Mode Voltage VCM and voltage that is different as the Differential Mode Voltage VDM Vom Differential ae C mode Common i mode NOM wO Vom Differential 2 mode Figure 7 Simplified model of a differential amplifier Differential amplifiers cannot reject all of the common mode signal The ability of a differential amplifier to reject the common mode signal is expressed as the Common Mode Rejection Ratio CMRR The CMRR is the differential mode gain divided by the common mode gain Acy It is expressed either as a ratio or in dB A MRR dB 20 log v CMRR generally is highest best at DC and
18. Technical Reference Tektronix P7360A and P7340A 6 GHz and 4 GHz Z Active Differential Probes 071 1868 01 www tektronix com Copyright Tektronix rights reserved Licensed software products are owned by Tektronix or its subsidiaries or suppliers and are protected by national copyright laws and international treaty provisions 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 TEK TekConnect and Z Active are registered trademarks of Tektronix Inc Velcro is a registered trademark of Velcro Industries B V Tip Clip is a trademark of Tektronix Inc Contacting Tektronix Tektronix Inc 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA For product information sales service and technical support n North America call 1 800 833 9200 m Worldwide visit www tektronix com to find contacts in your area ESSEN AEN Table of Contents General Safety Summary v Introduction sess eisie Eor rra rsen Rma iis 1 Theory of Operation 3 Input Voltage Limits isini naran aa aa i n III 3 Maximum Input Voltage 3 Operating Voltage Window 4 Differential Mode Signal Ra
19. Theory of Operation Contains probe details not mentioned in the user manual W Reference Contains information about differential measurements and how to increase measurement accuracy m Specifications Contains warranted typical and nominal characteristics for the probe and probe Tip Clip Assemblies m Performance Verification Describes the procedures for verifying the warranted specifications m User Service Describes troubleshooting and probe maintenance P7360A and P7340A Z ActiveDifferential Probes 1 Introduction 2 P7360A and P7340A Z ActiveDifferential Probes DERIT GERENS Theory of Operation A Input Voltage Limits Maximum Input Voltage A This section discusses operating considerations and probing techniques For more detailed information about differential measurements and common mode rejection ratio CMRR see the Reference section on page 9 These probes are optimized for high bandwidth they are not general purpose probes The probe head and tips are miniaturized for electrical characteristics and access to dense circuitry and must be handled carefully CAUTION To prevent damage to the probes use care when handling the probes Rough or careless use can damage the probes These probes are designed to probe low voltage circuits Before probing a voltage take into account the limits for maximum input voltage the common mode signal range and the differential mode signal rang
20. ately 40 5 V This represents 80 of the probe dynamic range in this attenuation setting Record this source voltage as Vinl 4 Record the output voltage on the second DMM as Vou 5 Disconnect the test leads from the power supplies Leave the DMM leads connected to the adapters 6 Reverse the polarity of the voltage applied to the probe inputs by swapping both sets of banana leads at the power supply as shown in Figure 21 7 Record the actual source voltage now a negative value as Vin2 P7360A and P7340A Z ActiveDifferential Probes 35 Performance Verification Gain Check at 25X Attenuation 36 DMM V in TDS CSA 8200 Series Oscilloscope a a a TS o o LOJ Ooo P7360A P7340A 7 80008 probe DMM V BNC SMA Long Flex Small Test leads 2 mood adapter Resistor 1 8 W wimini plunger S Tip Clip Assembly 50 Q Precision BNC to dual 9 termination banana adapter BNC cable Figure 21 Reverse the power supply polarity on the probe inputs 8 Record the output voltage on the second DMM now a negative value as Vout2 9 Calculate the gain as follows Vout Vour2 Vial 2 10 Verify that the gain is 0 2 2 0 11 Record the calculated gain for the 5X setting on the test record 1 Set
21. ation before making connections to the product Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Do Not Operate Without Covers Do not operate this product with covers or panels removed Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry P7360A and P7340A Z ActiveDifferential Probes V General Safety Summary vi Symbols and Terms A A Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Symbol on the Product The following symbol may appear on the product CAUTION Refer to Manual P7360A and P7340A Z ActiveDifferential Probes ay Introduction This manual discusses topics not covered or otherwise mentioned briefly in the P7313 12 5 GHz P7380A 8 GHz P7360A 6 GHz and P7340A 4 GHz Z Active Differential Probe Family User Manual The following is a list of brief explanations m
22. be Arm Adapter Some of the procedures in this manual use a PPM203B Articulated Arm This is a general purpose benchtop probe holder that provides a method for securing the probe and must be used with the Probe Arm Adapter Use the following steps and Figure 17 to attach the Probe Arm Adapter to the PPM203B Articulated Arm Using the Hex wrench remove the screw from the end of the articulated arm Using the Hex wrench attach the Adapter bottom to the probe arm 1 2 3 Loosen the Adapter top by turning the two thumb screws counter clockwise 4 Place the probe in the loosened Adapter bottom keyed 5 Secure the Adapter top by tightening the two thumb screws Tighten thumb screws lt Adapter top Adapter to probe arm connection Adapter bottom Figure 17 Adapter Fixture P7360A and P7340A Z ActiveDifferential Probes Performance Verification Equipment Setup WN CAUTION To avoid ESD damage to the probe always use an antistatic wrist strap provided with your probe and work at a static approved workstation when handling the probe Perform the following verification procedures in order Use the following procedure to set up and warm the equipment to test the probe 1 Connect the 80A03 TekConnect probe interface to channels 3 and 4 of the TDS 8200 oscilloscope See Figure 18 2 Connect the 80EOX module to the 80A03 TekConnect probe interface 3 Connect the pro
23. be to one of the 80A03 probe interface channels 4 Turn on the oscilloscope and allow 20 minutes for the equipment to warm up 5 From the Utilities menu select Utilities Compensation to compensate and save the compensation for module channels 3 and 4 6 Photocopy the test record on page 43 to record the performance test results TDS CSA 8200 Series Oscilloscope 000000000 00 Ts g o AJL o Ooo CH 4 measurement channel 91 gt 80A03 80A03 TekConnect probe 90 interface module 80E0X Module P7360A P7340A probe Figure 18 Preliminary test setup P7360A and P7340A Z ActiveDifferential Probes 33 Performance Verification Output Offset Voltage 34 NOTE Before beginning these procedures refer to page 43 and photocopy the test record if you have not already done so and use it to record the performance test results Use the following procedure to test the Output Offset voltage 1 Connect the equipment as shown in Figure 19 2 Plug the probe into the 80A03 module and warm up for 20 minutes if not done 3 Short the two Tip Clip leads together see Figure 19 We recommend using the BNC m to Minigrabber black with the Minigrabber not grounded TDS CSA 8200 Series Oscilloscope a
24. cy MHz 17 Specifications Differential Input Voltage Vpp 100 1000 10000 Frequency MHz Figure 12 Z Active probe dynamic range verses frequency 25X gain setting Percent Vout Error Measured Expected Typical Differential Input Voltage Volts Figure 13 P7380A P7360A and P7340A dynamic range 5X gain setting 18 P7360A and P7340A Z ActiveDifferential Probes Specifications ILL IL e LET B M Bd Typical o S n EM d UNE HENT Percent Vout Error Measured Expected 1 Differential Input Voltage Volts Figure 14 P7380A P7360A and P7340A dynamic range 25X gain setting P7360A and P7340A Z ActiveDifferential Probes 19 Specifications Tip Clip Assembly Specifications Note All specifications are typical in the Edi Vie Sep Teo LX following Tip Clip assemblies unless Fl nic IBI aca ose n zl Tafira 2 npe REL se otherwise indicated Puce i Em FEDERER MI TEL SE SE ze az Fo y Short Flex Small Resistor 1 measurement Tip Clip Assembly Tektronix part number 020 2600 XX Bandwidth gt 6 0 GHz m nbi 10 90 Rise time 70 ps e 20 80 Rise time 50 ps 1 Guaranteed A Loading Zin 290 to 6 GHz Best overall signal fidelity The small
25. ded Zmin 240 UNI 100 KHz 1MHz 10 MHz 100 MHz 1G6Hz 10 GHz Frequency P7360A and P7340A Z ActiveDifferential Probes 21 Specifications Medium Flex Small Resistor Tip Clip Assembly Tektronix part number 020 2602 XX Bandwidth gt 5 0 GHz 10 90 Rise time 70 ps 20 80 Rise time 50 ps Guaranteed Loading 290 to 6 GHz Good compromise between ease of use and maximum performance when attaching to smaller devices or circuit board vias Edt Setup e 5 Mode Average Trig intemal Clock m sv BER Pulse v Amplitude 1 nnn c 5 as 41 0 Dpsidiv 3 38 Pm 2 9 2006 6 m s 100 MHz 1 GHz 10 GHz Frequency Hz Es Impedance Ohms 100 KHz 1MHz 10 MHz 100 MHz 16Hz 10 GHz Frequency P7360A and P7340A Z ActiveDifferential Probes Specifications File Edit View Setup Utilities Help Triggered Tekmenk 9 x Made aveese m z Ee zw as f 50 00mV div Medium Flex Large Resistor
26. degrades with increasing frequency P7360A and P7340A Z ActiveDifferential Probes Reference Assessing CMRR Error Figure 8 on page 15 shows the CMRR of a Z Active differential probe This derating graph assumes a sinusoidal common mode signal A quick way to assess the magnitude of CMRR error when the common mode signal is not sinusoidal is to connect both leads to the same point in the circuit The oscilloscope displays only the common mode component that is not fully rejected by the probe While this technique may not give you accurate measure ments it does allow you to determine if the magnitude of the common mode error signal is significant Make the probe Tip Clip wires the same length to maximize the probe CMRR Input Impedance Effects The lower the input impedance of the probe relative to the source impedance the onCMRR lower the CMRR for a given source impedance imbalance Differences in the source impedance driving the two inputs lowers the CMRR Note that single en ded measurements generally result in asymmetric source impedances which tend to reduce the differential mode CMRR P7360A and P7340A Z ActiveDifferential Probes 11 Reference 12 P7360A and P7340A Z ActiveDifferential Probes REE SENIUM Specifications The specifications in Tables 2 through 5 apply to the P7360A and P7340A Differential Probes installed on any TekConnect instrument or Tektronix 80A03 TekConnect adapter When the probe is used with anothe
27. e For specific limits refer to page 14 The maximum input voltage is the maximum voltage to ground that the inputs can withstand without damaging the probe input circuitry CAUTION To avoid damaging the inputs of the P7360A and P7340A Differential Probes do not apply more than 15 V DC peak AC between each input or between either probe input and ground P7360A and P7340A Z ActiveDifferential Probes 3 Theory of Operation Operating Voltage Window Differential Mode Signal Range The operating voltage window defines the maximum voltage that you can apply to each input with respect to earth ground without saturating the probe input circuitry See Figure 1 A common mode voltage that exceeds the operating voltage window may produce an erroneous output waveform even when the differential mode specification is met For specifications refer to page 14 The differential mode signal range is the maximum voltage difference between the plus and minus inputs that the probe can accept without distorting the signal The distortion from a voltage that is too large can result in a clipped or otherwise inaccurate measurement For specifications refer to page 14 1 3V 4 0 V 5X gt t 3 0V Figure 1 Dynamic range Common Mode Rejection The common mode rejection ratio CMRR is the ability of a probe to reject signals that are common to both inputs More precisely CMRR is the ratio of the differentia
28. equency Hz ma L2 E 10K Differential 5 2 360 E 1K 100 100 KHz 10 MHz 100 MHz 10 GHz Frequency 24 P7360A and P7340A Z ActiveDifferential Probes Specifications Long Flex Large Resistor 1 8 W EE SU a TER Tip Clip Assembly GRA zc Aca Aveco m Tha iriemal lock eoo Ee Tektronix part number 020 2605 XX Pies zl aan MIA MA ioi ale Bandwidth gt 5 0 GHz 10 90 Rise time lt 90 ps 20 80 Rise time 60 ps Loading ZyiN 300 Q to 6 GHz Extended reach with good step response Useful for connecting to hard to reach circuitry with large features Conveniently sized to fit between DIMM modules Not recommended for signals faster than 4GHz EP eee 6 dB e 12 100 MHz 1GHz 10GHz Frequency Hz x Differential Zmin 300 2 Impedance Ohms Single Ended Zmin 280 Q 100 KHz 1MHz 10 MHz 100 MHz 16Hz GHz Frequency P7360A and P7340A Z ActiveDifferential Probes 25 Specifications Square Pin Tip Clip Assembly Tektronix part number 020 2701 XX Bandwidth gt 6 0 GHz 10 90 Rise time lt 7
29. g When you connect the probe inputs to a circuit you are introducing a new resistance capacitance and inductance into the circuit Each input of the differential probe has a characteristic input impedance of 50 to ground i400 60fF It IN 38 Q 37 Q 50 Input 9 ok 20fF Cpl 3109 3 12 pF Zodd 95 e N 1C j e Zeven 190 et T 201F Kodd Keven 1 9 NV N 73 50 KQ input a e 38 Q 37 Q 60fF 1 See the following figures for an explanation of cpl Short Tip Clip blue length Figure 3 Typical probe input model For signals with low source impedance and frequency the 50 KQ input imped ance on each input is large enough to prevent the inputs from loading the signal sources As the signal source impedance on an input increases the more the probe loads the source and reduces the signal amplitude The greater the source impedances and the higher the signal frequencies the more you must take these factors into account See Figure 3 The frequency of the signal also affects signal measurement As the frequency of the signal increases the input impedance of the probe decreases The lower the impedance of the probe relative to that of the source the more the probe loads the circuit under test and reduces the signal amplitude For a graph of input impedance versus frequency refer to Figure 9 on page 15 6 P7360A and P7340A Z ActiveDifferential Probes
30. irement Recommended example Sampling Oscilloscope Tektronix TDS 8200 Series Sampling Module 20 GHz bandwidth Tektronix 80E04 or 80E03 Pulse Generator lt 25 ps rise time Tektronix 80E04 TDR Sampling Head Extender 1m 012 1568 XX Cable TekConnect Probe Interface Firmware version 2 0 Tektronix 80A03 with Module with semi rigid cable 174 4857 XX cable TekConnect to SMA adapter See page 31 Tektronix TCA SMA DMM 2 with leads 0 1 mV and 0 01 Q resolution Fluke 187 or equivalent Dual Power Supply 5 0 VDC at 200 mA B K Precision 1760A or equivalent Coaxial cable Male to Male BNC 50 Q 012 0057 XX Test leads 1 Banana plug ends red 012 0031 XX Test leads 1 Banana plug ends black 012 0039 XX Test leads 2 Mini plunger with test clip Mueller BU 1120 Adapter SMA 50 Q termination comes with 015 1022 XX the probe calibration fixture Adapter BNC M to Minigrabbers 013 0342 XX Adapter SMA Male to BNC female 015 1018 XX P7360A and P7340A Z ActiveDifferential Probes 29 Performance Verification 30 Table 6 Test equipment cont Description and quantity Adapter 2 Feed through termination Probe calibration fixture Variable Spacing Tip Clip Assembly Long Flex Small Resistor 1 8 Watt Tip Clip Assembly Super glue SMA torque wrench Performance requirement SMA Male to Male BNC 50 Q 0 05 Q See page 31 5 16 in 7 in lb Recommended example 015 1011 XX 011 0129 XX 067 0419 XX 020 2596
31. l gain to the common mode gain The higher the ratio the greater the ability to reject common mode signals CMRR varies with frequency usually decreasing at higher frequencies For additional information about CMRR see page 15 P7360A and P7340A Z ActiveDifferential Probes Theory of Operation Probing Techniques to Maximize Signal Fidelity Signal fidelity is an indication of how accurately a probe represents the signal being measured The signal fidelity of the probe is best when the probe is applied directly to the circuit with the Short Flex Small Resistor Tip Clip assembly shown in Figure 2 This Tip Clip assembly achieves high signal fidelity by minimizing the distance between the probe head and the signal source This reduces probe interconnect parasitics which tend to degrade signal fidelity However some probing tasks are made easier using other accessories included with the probe The Tip Clip specifications starting on page 20 show pulse response illustrations that give some indication of signal fidelity with different Tip Clip assemblies Signal fidelity is affected by both the probe interconnect and the speed of the signal It is recommended that the longer the Tip Clip assembly be used with somewhat slower speed signals for better signal fidelity Figure 2 Use the Short Flex Small Resistor Tip Clip assembly P7360A and P7340A Z ActiveDifferential Probes 5 Theory of Operation Input Impedance and Probe Loadin
32. ng address 46 P7360A and P7340A Z ActiveDifferential Probes
33. nge 4 Common Mode Rejection 4 Probing Techniques to Maximize Signal Fidelity 5 Input Impedance and Probe Loading 6 Electrical Effects of Accessories 8 Reference js cs ieri etg nei Lei ira Eli 9 Single Ended Measurements 9 Differential Measurements 10 Common Mode Rejection Ratio 10 Assessing CMRR Error 0 eee 11 Input Impedance Effects on CMRR 11 Serial Bus Standards deer et eg OE SA OH ES S 12 Specifications ci yr E rnm n era rh OR RO RODA QC 13 Warranted 13 Typical Characteristics 422 ura a ee qose a Ic be Rec qo rca Ri 14 Nominal Characteristics 8 55 17 Tip Clip Assembly Specifications 20 Performance Verification 29 Equipment 8 29 Special Adapters Required 31 Equipment Setup 2 224 Dist oh rto Re edle ee e dcs 33 Output Offset Voltage cece eee een eee ee 34 DC Gai 53 1 Sos Tu ou
34. o vivere deti ei dte 35 Gain Check at 5X Attenuation 35 Gain Check at 25X Attenuation 36 Rise Fe acu Du scite ate doni atta AL ere Lf 37 Rise Time Measurement using the Probe Calibration Fixture 38 Rise Time Check at 25X Attenuation 39 Test ReCOIQ e is ore qi des 43 User Service PESCE o Ue savant es 45 Probe Adapter Oscilloscope Compatibility 45 Error Condition su va Cx ere aie c Pec ee 45 Replacement Parts osi cse codes A eec a ed Ec y y eh 45 Preparation for Shipment eee ccc eee eee es 46 P7360A and P7340A Z ActiveDifferential Probes i Table of Contents List of Figures Figure 1 Dynamic Figure 2 Use the Short Flex Small Resistor Tip Clip assembly Figure 3 Typical probe input model Figure 4 Symmetric coupled line Figure 5 Transmission line equivalent Figure 6 Lumped element equivalent Figure 7 Simplified model of a differential amplifier Figure 8 Typical Common Mode Rejection Ratio 5X attenuation Figure 9 Typical differential input impedance versus frequency Figure 10 Probe and Tip Clip dimensions
35. r oscilloscope the oscilloscope must have an input impedance of 50 The probe must have a warm up period of at least 20 minutes and be in an environment that does not exceed the limits described in Table 2 Specifications for these probes fall into three categories warranted typical and nominal characteristics Warranted Characteristics Warranted characteristics Table 2 describe guaranteed performance within tolerance limits or certain type tested requirements Warranted characteristics that have checks in Table 2 are marked with the 7 symbol Table 2 Warranted electrical characteristics Characteristic Description DC attenuation accuracy 2 Output Zero 3 mV 20 to 30 C 68 to 86 F 5X 15 mV on oscilloscope 3 mV 20 to 30 C 68 to 86 F 25X 75 mV on oscilloscope Rise time 70 ps probe only Short Flex Small Resistor Tip Clip all other Tip Clip assemblies are typical P7360A 100 ps probe only Short Flex Small Resistor Tip Clip all other Tip Clip assemblies are typical P7340A Temperature Operating 0 to 40 C 32 to 104 F Nonoperating 55 to 75 C 131 to 167 F Humidity Operating 0 90 RH tested at 0 to 40 C 32 to 104 F Nonoperating 0 90 RH tested at 55 to 75 C 67 to 167 F 1 See warning that follows WARNING To avoid a burn hazard at high ambient temperatures do not touch the probe with bare hands at nonoperating temperatures above 7
36. re 23 NOTE It is recommended that you use the PPM203B Articulated Arm with the Probe Arm Adapter see page 32 to stabilize the probe while verifying the differential rise time specification Termination an EN Figure 23 PPM203B Articulated Arm with the Handheld Adapter 38 P7360A and P7340A Z ActiveDifferential Probes Performance Verification Rise Time Check at 25X Attenuation A 1 Connect the standard 80A03 semi rigid SMA connector between the 80 03 probe output and the 80EOX module input Insert a TCA SMA adapter into the TekConnect interface on the 80A03 2 Connect the test equipment as shown in Figure 24 A sampling module extender cable is used with the TDR pulse generator to minimize cable loss problems CAUTION 7o prevent mechanical strain on the connectors use care when working with SMA connectors Support equipment and use a torque wrench to tighten connections to 7 in lbs TDS CSA 8000 Series Oscilloscope CH 7 and 8 module slot 200 o CH 4 measurement channel TCA SMA adapter D 80A08 754 80 0 sampling 000 SMA male to male module connector lt Calibration fixture SMA male to male connector 80 04 TDR pulser Sampling module extender cable Figure 24 Tes
37. t system rise time setup NOTE The 80A03 firmware version must be version V 2 0 or above The firmware version label is on the rear panel of the instrument 3 Turn on Channel 4 and set the vertical scale to 50 mV div P7360A and P7340A Z ActiveDifferential Probes 39 Performance Verification 40 Enable outputs _ T 5 4 Setthe Channel 8 sampling head to mode Press the SETUP DIALOGS button and select the TDR tab See Figure 25 TDR tab CE Vert Horz Trig Wm Database Hist Cursor Meas Mask Disp TDR Step On Polarity On Units eur re gt eU ur E uU cour m A MEy preset Internal Clock 200kHz Manual Step Deskew Channels ca 0 0 Step polarity n C zu 3m 9 x3 a Figure 25 Setting the TDR parameters Set the Preset of Channel 8 The sampling module turns on a red light next to the SELECT channel button indicating that TDR is activated for that channel TDR Preset sets Internal Clock in the Trigger menu turns on the TDR Step in the TDR Setups menu turns on the channel and selects the acquisition units in the TDR Setups menu and sets the horizontal scale position and reference P7360A and P7340A Z ActiveDifferential Probes Performance Verification 6 Turn off the display for Channels 8 then only Channel 4 is shown on the screen
38. the 5X attenuation setting P7360A and P7340A Z ActiveDifferential Probes Performance Verification Test Record Probe Model Serial Number Temperature Date of Calibration Performance test Output offset voltage DC attenuation accuracy Rise time P7360A P7340A P7360A and P7340A Z ActiveDifferential Probes 25X 3 mV 20 C to 30 C 5X 3 mV 20 C to 30 C 25X 5X 25X 5X 25X 5X Certificate Number RH Technician 3mV 3mV 0 0392 0 196 N A N A N A N A Maximum 3 mV 3 mV 0 0408 0 204 70 ps 70 ps 100 ps 100 ps 43 Performance Verification 44 P7360A and P7340A Z ActiveDifferential Probes SS User Service This section covers troubleshooting and probe maintenance Probe Adapter Oscilloscope Compatibility Thezs differential probes are designed to work with all TekConnect interface oscilloscopes and adapters However there may be some cases where probe features may not work properly Table 7 Differential probe compatibility issues Symptom Likely cause Differential probe does not The 80A03 Adapter requires firmware version 2 0 and above work with an 80A03 TekCon The firmware version label is on the rear panel of the nect Probe Interface Adapter instrument Contact Tektronix for information on updating the adapter firmware The LED on the 80A03 Adapt 29 er mw er glows red indicating an incompatible probe Error
39. ule extender cable Figure 26 Test probe rise time setup P7360A and P7340A Z ActiveDifferential Probes 41 Performance Verification 42 Rise Time Check at 5X Attenuation 10 11 12 13 14 Remove the calibration fixture from the TCA SMA adapter and disconnect the TCA SMA adapter from the 80A03 TekConnect probe interface Connect the probe to the 80A03 TekConnect probe interface Check that an SMA 50 Q termination included with the probe calibration fixture is connected to the open SMA output on the fixture Set the attenuation on the probe to 25X Connect the probe input to the probe calibration fixture as shown in Figure 23 on page 38 Check that the TDR function is still active The test setup should now be connected as shown in Figure 26 15 16 17 18 19 20 21 Adjust the vertical scale to 50 mV div averaging on Expand the horizontal scale to help locate the step edge then adjust the horizontal range to 100 ps div while centering the edge view For a more stable measurement display turn averaging on Use the oscilloscope measurement capability to display rise time Rise time is measured from the 1046 and 9046 amplitude points on the waveform Record the rise time as 4 Calculate the probe rise time using the following formula t y teo te Record the calculated probe rise time on the test record Set the attenuation on the probe to 5X Repeat steps 16 through 19 for
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