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Tektronix TAP2500, Instruction Manual

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Tektronix TAP2500 Instruction Manual Download Page 26

Calibration

Calibration

The probe calibration routine minimizes your measurement errors by optimizing the gain and offset of the probe and oscilloscope
combination. We recommend that you repeat the probe calibration on each channel that you use. Individual calibration constants
are stored for each probe on each channel.

Prerequisites

The equipment must be warmed up for 20 minutes, and the calibration status of the host instrument must be pass.

Required equipment

The required equipment for calibration is the same as for the functional check. (See page 6,

Required equipment

.)

8

TAP2500, TAP3500, and TAP4000 Instruction Manual

Summary of Contents for TAP2500

Page 1: ...x TAP2500 TAP3500 and TAP4000 2 5 GHz 3 5 GHz and 4 GHz Probes ZZZ Instruction Manual P071183602 071 1836 02...

Page 2: ......

Page 3: ...TAP2500 TAP3500 and TAP4000 2 5 GHz 3 5 GHz and 4 GHz Probes ZZZ Instruction Manual xx www tek com 071 1836 02...

Page 4: ...ormation in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc TekVP...

Page 5: ...taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and...

Page 6: ......

Page 7: ...used in this manual xi Returning the probe for servicing xii Key features 1 Installation 2 Connecting to the host instrument 2 Probe controls and indicators 3 Functional check 6 Required equipment 6 C...

Page 8: ...ength 30 Ground lead inductance 31 Low inductance grounding 32 SureFoot Grounding 33 Probe tip test points 34 Probe tip stabilization 35 Specifications 36 Warranted characteristics 37 Typical characte...

Page 9: ...Table of Contents Rise time 51 Test record 59 Maintenance 60 Error condition 60 Replacement parts 60 Cleaning 61 Index TAP2500 TAP3500 and TAP4000 Instruction Manual iii...

Page 10: ...Table of Contents iv TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 11: ...onnect the probe reference lead to the circuit under test before connecting the probe input Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the...

Page 12: ...u suspect that there is damage to this product have it inspected by qualified service personnel Avoid exposed circuitry Do not touch exposed connections and components when power is present Do not ope...

Page 13: ...ons or practices that could result in damage to this product or other property Symbols and terms on the product These terms may appear on the product DANGER indicates an injury hazard immediately acce...

Page 14: ...General safety summary The following symbol s may appear on the product viii TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 15: ...le of rendering first aid and resuscitation is present Disconnect power To avoid electric shock switch off the instrument power then disconnect the power cord from the mains power Use care when servic...

Page 16: ...e environment or human health if improperly handled at the product s end of life To avoid release of such substances into the environment and to reduce the use of natural resources we encourage you to...

Page 17: ...read about Use these documents TAP2500 TAP3500 and TAP4000 Probes First Time Operation Functional Check Operating Basics Specifications Performance Verification Read this Instruction Manual In depth o...

Page 18: ...rton having inside dimensions at least one inch greater than the probe dimensions The box should have a carton test strength of at least 200 pounds 2 Put the probe into an antistatic bag or wrap it to...

Page 19: ...cilloscopes featuring the new Tektronix TekVPI oscilloscope interface Key features include Bandwidth DC to 2 5 GHz TAP2500 DC to 3 5 GHz TAP3500 DC to 4 GHz TAP4000 4 Volts Dynamic Range with 10 volt...

Page 20: ...ekVPI receptacle The probe snaps when fully engaged When the probe is connected the host instrument reads information from the probe and identifies the device 2 To disconnect press the latch release b...

Page 21: ...is powered on the multicolor Status LED Glows green after successfully completing the power on self test routine The probe is in normal operating mode Glows red if an error condition exists See page...

Page 22: ...n to display the Probe Control screen on the oscilloscope 2 Use the touch screen buttons on the instrument to set the probe parameters 3 Press the probe Menu button again to close the Probe Control sc...

Page 23: ...od When the operating temperature of the probe changes by 5 C 1 Press the probe Menu button to display the Probe Control screen on the oscilloscope 2 Short the probe tip to ground 3 Press the AutoZero...

Page 24: ...ription and quantity Performance requirement Recommended example 1 Oscilloscope TekVPI Interface Tektronix DPO7000 Series Tektronix 5 Series MSO Tektronix 6 Series MSO Y Lead adapter 0 25 in square pi...

Page 25: ...annel 2 Use the Y lead Adapter and two SMT KlipChips to connect the probe tip to the PROBE COMP terminals on the oscilloscope 3 Press AUTOSET or adjust the oscilloscope to display the calibration wave...

Page 26: ...tion on each channel that you use Individual calibration constants are stored for each probe on each channel Prerequisites The equipment must be warmed up for 20 minutes and the calibration status of...

Page 27: ...menu select Instrument Calibration 2 In the Calibration box check that Pass is displayed in the Status field If it is not disconnect all probes and signal sources from the oscilloscope and run the Si...

Page 28: ...Calibration 3 Connect the probe to the oscilloscope PROBE COMP connector as shown 4 From the Vertical menu select Probe Cal 10 TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 29: ...appears select Clear ProbeCal and then select Calibrate Probe The probe calibration routine begins When the routine completes a notifier appears Close the notifier and begin using your probe TAP2500...

Page 30: ...formance Its small size makes it easy to handle in tight areas 1 The probe tip socket is sized to easily press onto 0 025 inch pins for direct access 2 The ground socket provides a short ground path f...

Page 31: ...s may damage the probe tip amplifier See Figure 1 on page 14 Input Linear Dynamic Range The probe head amplifier used by the probe has a limited linear operating range To keep the input linearity erro...

Page 32: ...Basic operation Figure 1 Dynamic and Offset Limitations 14 TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 33: ...al probe performance See Figure 1 on page 14 NOTE See your oscilloscope manual for specific instructions on using the offset control To set the probe offset follow these steps 1 Use the vertical posit...

Page 34: ...fset range The linear operating range is 4 V See Figure 1 on page 14 If cursors are used on the oscilloscope the zero reference will be at the probe offset voltage When you adjust the probe offset wit...

Page 35: ...the actual number of accessories included with the probe Using standard accessories Push in probe tip Use the push in probe tip for general purpose probing by hand You can also use the push in probe t...

Page 36: ...rs the same way as the push in probe tips Do not force the adapter Also be careful not to poke yourself with the sharp probe tip SureToe adapters can be used with any of the socketed accessory leads F...

Page 37: ...ly move the probe to different points on the circuit under test To attach press the pogo pin into the probe head ground socket To maintain signal fidelity while probing use as short a ground path as p...

Page 38: ...ipping and damaging the probe or circuitry under test Reorder Tektronix part number 016 1773 10 qty 10 Customizable Ground Lead You can bend or shorten this ground lead Cut the tip of the ground lead...

Page 39: ...against a circuit board enabling you to probe in tight areas such as between circuit cards The right angle adapter can be used directly with the probe head or attached to the Y lead adapter or ground...

Page 40: ...he ground leads for general lower frequency probing The socketed end of the leads may be connected to any of the probe tips and adapters or fitted onto 0 025 inch square pins When selecting the ground...

Page 41: ...r ground leads Simply press the lead socket into the KlipChip handle The KlipChip body freely turns allowing better probe orientation To reduce stress and provide a lower profile on components being t...

Page 42: ...band to the probe cable and another one of the same color near the probe compensation box 2 Connect the probe to the channel that matches the color of the band Reorder Tektronix part number 016 1315 X...

Page 43: ...06 3415 XX Pouch nylon carrying case with inserts Use the carrying case to hold the probe the accessories and the instruction manual 1 Place the probe accessories and manual in the carrying case 2 Clo...

Page 44: ...operating and maintaining the TAP2500 TAP3500 and TAP4000 active probes Store the instruction manual in the probe case for easy reference Tektronix part number 071 1836 XX English 071 1884 XX Japanese...

Page 45: ...o Grabber to probe the leads on integrated circuits that are surface mounted Order Tektronix part number 013 0309 XX qty 2 SMA to Probe Tip Adapter Use the adapter to connect the probe to SMA cables a...

Page 46: ...calibration fixture is required to do a performance verification on the probe It provides an SMA connector in the probe signal path for internal probe measurements Order Tektronix part number 067 170...

Page 47: ...Data Report Option D3 Calibration Data Report 3 years with Option C3 Option D5 Calibration Data Report 5 years with Option C5 Option R3 Repair Service 3 years Option R5 Repair Service 5 years Manual O...

Page 48: ...short a ground lead as possible between the probe head and circuit ground See the illustration for the effects of lead length on waveform distortion The series inductance added by the probe tip and g...

Page 49: ...sonant frequency f0 at which this parasitic circuit will resonate with the following formula The equation shows that reducing the ground lead inductance will raise the resonant frequency If your measu...

Page 50: ...ngth and distortion 1 Attach a small piece of copper clad on top of the package 2 Connect the copper clad to the package ground connection 3 Use the low inductance ground lead to keep the ground lead...

Page 51: ...est using a SureFoot adapter 1 Connect a short ground lead to the probe 2 Attach a SureFoot adapter at the end of the ground lead 3 Connect the SureFoot adapter directly to the package ground This met...

Page 52: ...tip to take a measurement 3 Pull the probe head off when you are done Quick tip The probe tip may be removed and reused by desoldering it from the circuit and soldering it into another circuit in the...

Page 53: ...ress the probe onto the header pin 2 Insert the stabilizing notch of the probe onto an adjacent pin This prevents unnecessary force from being applied directly to the probe tip or pins The signal grou...

Page 54: ...and oscilloscope must have a warm up period of at least 20 minutes and be in an environment that does not exceed the limits described See Table 1 The Signal Path Compensation SPC has been run on the...

Page 55: ...Table 1 Warranted electrical characteristics Characteristic Description DC attenuation accuracy probe only 10 1 2 excludes offset error Rise time probe only 140 ps TAP2500 130 ps TAP3500 Temperature...

Page 56: ...DC to 4 GHz TAP4000 Input resistance 40 k Input capacitance 0 8 pF Input signal range 4 0 V to 4 0 V Input offset range 10 0 V to 10 0 V Output Zero 10 mV or less displayed on screen Maximum non dest...

Page 57: ...Specifications Figure 2 TAP2500 Typical bandwidth TAP2500 TAP3500 and TAP4000 Instruction Manual 39...

Page 58: ...Specifications Figure 3 TAP3500 Typical bandwidth 40 TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 59: ...Specifications Figure 4 TAP4000 Typical bandwidth TAP2500 TAP3500 and TAP4000 Instruction Manual 41...

Page 60: ...Specifications Figure 5 Typical input impedance and phase versus frequency 42 TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 61: ...box 107 mm 41 mm 26 mm 4 2 in 1 6 in 1 0 in Dimensions probe head 19 43 mm 3 30 mm 7 6 mm 0 765 in 0 130 in 0 300 in Dimensions cable length 1 3 m 51 in from the probe head to the compensation box Un...

Page 62: ...s do not have tolerance limits Table 4 Nominal electrical characteristics Characteristic Description Input coupling DC Termination Terminate output into 50 Compatibility Oscilloscopes equipped with th...

Page 63: ...nded example 1 Oscilloscope TekVPI Interface Tektronix DPO7000 Series Tektronix 6 Series MSO Sampling oscilloscope 12 5 GHz bandwidth Tektronix TDS8000 Series Tektronix DSA8300 Sampling module 12 5 GH...

Page 64: ...0 SMA cable 2 Male to Male SMA cable 012 0649 00 Precision termination 50 0 1 0 5 W 011 0129 00 Y Lead adapter 0 25 in square pins for probe tip connections 196 3457 xx 2 SMT KlipChip adapters 2 0 25...

Page 65: ...Verification adapter to the oscilloscope 3 Connect the probe to the TekVPI Calibration Verification adapter and verify that the Status LED on the probe turns green 4 Turn on the remaining test equipme...

Page 66: ...ut 2 Connect the SMA M to BNC F adapter to the SMA output of the TekVPI Calibration Verification adapter 3 Connect the precision termination to the BNC end of the SMA M to BNC F adapter 4 Connect the...

Page 67: ...6 Connect the Y lead adapter and KlipChip adapters to the probe input 7 Attach the KlipChip adapters to the BNC to dual banana adapter connected to the DC voltage source Make sure the polarity is corr...

Page 68: ...est record 13 Set the DC voltage source to 1 00 VDC 14 Record the DMM measurement in the test record NOTE An unacceptable error value may result if a precision 50 termination is not used for the recom...

Page 69: ...t rise time signal source A second 80E0X sampling head is used to take the measurements Although the following procedure assigns the TDR and measurement functions to specific oscilloscope channels any...

Page 70: ...ead to Channel1 of the sampling oscilloscope 2 Connect the 80E0X sampling head to Channel8 of the sampling oscilloscope 3 Connect SMA cables to Channels 1 and 8 4 Connect the SMA cable from Channel 1...

Page 71: ...5 Remove the 50 termination from the HF Probe Tip adapter and connect the SMA cable from Channel 8 to the adapter 6 Turn on Channel 8 and set the vertical scale to 50 mV div TAP2500 TAP3500 and TAP40...

Page 72: ...on 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...

Page 73: ...enter the waveform NOTE Do not touch the HF Probe Tip adapter when making calibration measurements Measurement accuracy is degraded when the probe tip adapter is handled 13 Use the oscilloscope measur...

Page 74: ...and reconnect the 50 SMA termination to the adapter 15 Connect the SMA cable from Channel 8 of the sampling oscilloscope to the SMA connector on the TekVPI Calibration Verification adapter 16 Connect...

Page 75: ...horizontal scale to locate the step edge Set the vertical scale to 5 mV div and adjust horizontal range to 100 ps div while maintaining the edge view For a more stable measurement display turn averag...

Page 76: ...if available Rise time is determined from the 10 and 90 amplitude points on the waveform Record the rise time as ts p 21 Using the test system rise time ts that you measured in step 13 and the test sy...

Page 77: ...Date of Calibration Technician Performance test Source voltage Minimum Measured Calculated Maximum 1 00 VDC 98 mV NA 102 mV DC Gain Accuracy 1 00 VDC 102 mV NA 98 mV Rise Time TAP2500 TAP3500 TAP4000...

Page 78: ...rk properly If the Status LED glows red during or after probe power on an internal probe diagnostic fault exists Disconnect and reconnect the probe to restart the power on diagnostic sequence If the S...

Page 79: ...e the probe Avoid using chemicals that contain benzine benzene toluene xylene acetone or similar solvents Clean the exterior surfaces of the probe with a dry lint free cloth or a soft bristle brush If...

Page 80: ...Maintenance 62 TAP2500 TAP3500 and TAP4000 Instruction Manual...

Page 81: ...lecting length 30 I Indicators 3 L LED Status 3 M Maintenance 60 Menu Button 4 O Offset 15 Options 29 P Performance verification 45 equipment required 45 equipment setup 47 Probe controls and indicato...

Page 82: ...Index T TekVPI 2 Test record 59 64 TAP2500 TAP3500 and TAP4000 Instruction Manual...

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