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TAP2500, TAP3500, and TAP4000 User Manual

2.5 GHz, 3.5 GHz, and 4 GHz Probes

This manual describes the installation and operation of the TAP2500, TAP3500, and TAP4000 active probes.


此手冊適用於:

TAP2500 0, TAP3500 0, TAP4000

  • 手冊類型: 主要使用者
  • 零件編號: 077189600
  • 發行日期:

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ATTENTION: please read the following terms and conditions carefully before downloading any documents from this website. By downloading manuals from Tektronix' website, you agree to the following terms and conditions:

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Tektronix hereby grants permission and license to owners of Tektronix instruments to download and reproduce the manuals on this website for their own internal or personal use. Manuals for currently supported products may not be reproduced for distribution to others unless specifically authorized in writing by Tektronix, Inc.

A Tektronix manual may have been revised to reflect changes made to the product during its manufacturing life. Thus, different versions of a manual may exist for any given product. Care should be taken to ensure that one obtains the proper manual version for a specific product serial number.

Manuals for Products That Are No Longer Supported:

Tektronix cannot provide manuals for measurement products that are no longer eligible for long term support. Tektronix hereby grants permission and license for others to reproduce and distribute copies of any Tektronix measurement product manual, including user manuals, operator's manuals, service manuals, and the like, that (a) have a Tektronix Part Number and (b) are for a measurement product that is no longer supported by Tektronix.

A Tektronix manual may be revised to reflect changes made to the product during its manufacturing life. Thus, different versions of a manual may exist for any given product. Care should be taken to ensure that one obtains the proper manual version for a specific product serial number.

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Important safety information

This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a safe condition.

To safely perform service on this product, see the Service safety summary that follows the General safety summary.

General safety summary

Use the product only as specified. Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Carefully read all instructions. Retain these instructions for future reference.

This product shall be used in accordance with local and national codes.

For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to the safety precautions specified in this manual.

The product is designed to be used by trained personnel only.

Only qualified personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or adjustment.

Before use, always check the product with a known source to be sure it is operating correctly.

This product is not intended for detection of hazardous voltages.

Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals for warnings and cautions related to operating the system.

When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.

To avoid fire or personal injury

Connect and disconnect properly

Do not connect or disconnect probes or test leads while they are connected to a voltage source.

Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be suitable for the product.

Connect the probe output to the measurement instrument before connecting the probe to the circuit under test. Connect 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 probe from the measurement instrument.

De-energize the circuit under test before connecting or disconnecting the current probe.

Connect the probe reference lead to earth ground only.

Observe all terminal ratings

To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product manual for further ratings information before making connections to the product.

Do not exceed the Measurement Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product, probe, or accessory. Use caution when using 1:1 test leads because the probe tip voltage is directly transmitted 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 float the common terminal above the rated voltage for that terminal.

The measuring terminals on this product are not rated for connection to mains or Category II, III, or IV circuits.

Do not connect a current probe to any wire that carries voltages or frequencies above the current probe voltage rating.

Do not operate without covers

Do not operate this product with covers or panels removed, or with the case open. Hazardous voltage exposure is possible.

Avoid exposed circuitry

Do not touch exposed connections and components when power is present.

Do not operate with suspected failures

If you suspect that there is damage to this product, have it inspected by qualified service personnel.

Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the product, turn it off and disconnect the power cord. Clearly mark the product to prevent its further operation.

Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not use probes or test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.

Examine the exterior of the product before you use it. Look for cracks or missing pieces.

Use only specified replacement parts.

Wear eye protection

Wear eye protection if exposure to high-intensity rays or laser radiation exists.

Do not operate in wet/damp conditions

Be aware that condensation may occur if a unit is moved from a cold to a warm environment.

Do not operate in an explosive atmosphere

Keep product surfaces clean and dry

Remove the input signals before you clean the product.

Provide proper ventilation

Refer to the installation instructions in the manual for details on installing the product so it has proper ventilation.

Slots and openings are provided for ventilation and should never be covered or otherwise obstructed. Do not push objects into any of the openings.

Provide a safe working environment

Always place the product in a location convenient for viewing the display and indicators.

Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard or pointer use may result in serious injury.

Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.

Use only the Tektronix rackmount hardware specified for this product.

Probes and test leads

Before connecting probes or test leads, connect the power cord from the power connector to a properly grounded power outlet.

Keep fingers behind the protective barrier, protective finger guard, or tactile indicator on the probes. Remove all probes, test leads and accessories that are not in use.

Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and adapters for any measurement.

WARNING:To avoid electric shock, keep the probe wire as far from the tip and high voltage circuits as possible. The probe wire voltage rating is less than the probe tip voltage rating. Therefore the probe wire may not provide adequate protection.
WARNING:To avoid electric shock, do not use the probe if the wear indicator on the cable becomes visible. Contact Tektronix at tek.com for a replacement.

Beware of high voltages

Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two ratings are important to know and understand:

  • The maximum measurement voltage from the probe tip to the probe reference lead.
  • The maximum floating voltage from the probe reference lead to earth ground.

These two voltage ratings depend on the probe and your application. Refer to the Specifications section of the manual for more information.

WARNING:To prevent electrical shock, do not exceed the maximum measurement or maximum floating voltage for the oscilloscope input BNC connector, probe tip, or probe reference lead.

Inspect the probe and accessories

Before each use, inspect probe and accessories for damage (cuts, tears, or defects in the probe body, accessories, or cable jacket). Do not use if damaged.

Ground-referenced oscilloscope use

Do not float the reference lead of the probe when using with ground-referenced oscilloscopes. The reference lead must be connected to earth potential (0 V).

Floating measurement use

Do not float the reference lead of the probe above the rated float voltage.

Service the probe and accessories

Go to tek.com/support to find information on contacting Tektronix Service Support.

Terms in this manual and on the product

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.

These terms may appear on the product:

  • DANGER indicates an injury hazard immediately accessible as you read the marking.
  • WARNING indicates an injury hazard not immediately accessible as you read the marking.
  • CAUTION indicates a hazard to property including the product.

Symbols on the product



When this symbol is marked on the product, be sure to consult the manual to find out the nature of the potential hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to ratings in the manual.)

The following symbols(s) may appear on the product.



CAUTION: Refer to Manual


Earth Terminal


WARNING: High Voltage

Compliance information

This section lists the safety and environmental standards with which the instrument complies. This product is intended for use by professionals and trained personnel only; it is not designed for use in households or by children.

Compliance questions may be directed to the following address:

Tektronix, Inc.
PO Box 500, MS 19-045
Beaverton, OR 97077, US
tek.com

Safety compliance

This section lists the safety standards with which the product complies and other safety compliance information.

Equipment type

Test and measuring equipment.

Safety class

Class 1 – grounded product.

Pollution degree rating

Pollution Degree 2. Normally only dry, nonconductive pollution occurs. Occasionally a temporary conductivity that is caused by condensation must be expected. This location is a typical office/home environment. Temporary condensation occurs only when the product is out of service.

A measure of the contaminants 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. Products should be used only in the environment for which they are rated.

IP rating

IPX0

Environmental compliance

This section provides information about the environmental impact of the product.

Product end-of-life handling

Observe the following guidelines when recycling an instrument or component:

Equipment recycling
Production of this equipment required the extraction and use of natural resources. The equipment may contain substances that could be harmful to the 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 recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately.

This symbol indicates that this product complies with the applicable European Union requirements according to Directives 2012/19/EU and 2006/66/EC on waste electrical and electronic equipment (WEEE) and batteries. For information about recycling options, check the Tektronix Web site (http://www.tek.com/productrecycling).

Installation

This manual describes the installation and operation of the TAP2500, TAP3500, and TAP4000 active probes. Basic probe operations and concepts are presented in this manual. The DPO7000 series oscilloscope and the TAP2500 probe is used in all illustrations in this manual, unless noted otherwise. You can access this document and other related information on tek.com.



Connecting to the instrument

These instructions describe how to connect your probe to an instrument.

Procedure



  1. Slide the probe into the TekVPI 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 button and pull away from the instrument.

Probe controls and indicators

Status LED

When the probe 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.


The TAP2500, TAP3500, and TAP4000 active probes are designed to work with all TekVPI-interface oscilloscopes and adapters. However, there may be some cases where all of the probe features may not work 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 Status LED continues to glow red, the probe is defective, and must be returned to Tektronix for repair.

Menu button



  1. Press the probe Menu button 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 screen.

AutoZero

We recommend that you run the probe AutoZero routine:
  • After the 20 minute warm-up period
  • 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 button on the instrument to execute the AutoZero routine.

Functional check

Use the following procedure to check that your probe is functioning properly. To verify that your probe meets the warranted specifications, refer to the Performance Verification procedures.

Before you begin

Nine-digit part numbers (xxx-xxxx-xx) are Tektronix part numbers.

Table 1. Required equipment
Description and quantityPerformance requirementRecommended example
OscilloscopeTekVPI InterfaceTektronix DPO7000 Series, Tektronix 5 Series MSO, Tektronix 6 Series MSO
Y-Lead adapter0.25-in square pins for probe tip connections196-3457-XX (standard accessory)
SMT KlipChip adapters (2)0.25-in square pins-to-mini clips206-0569-XX (standard accessory)

Procedure



  1. Connect the probe to any channel of the oscilloscope and set the oscilloscope to display that channel.
  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 waveform. A stable waveform indicates that your probe is functioning correctly.

Calibration

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

Before you begin

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

Table 1. Required equipment
Description and quantityPerformance requirementRecommended example
OscilloscopeTekVPI InterfaceTektronix DPO7000 Series, Tektronix 5 Series MSO, Tektronix 6 Series MSO
Y-Lead adapter0.25-in square pins for probe tip connections196-3457-XX (standard accessory)
SMT KlipChip adapters (2)0.25-in square pins-to-mini clips206-0569-XX (standard accessory)

Procedure



  1. From the Utilities 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 Signal Path Compensation routine


  1. Connect the probe to the oscilloscope PROBE COMP connector as shown.
  2. From the Vertical menu, select Probe Cal.


  1. When the Probe Setup screen 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.

Operating information

Use this section to help you use the probe safely and effectively. Read all safety information before installing your measurement system to be aware of the operating and clearance requirements, including possible hazardous areas when the measurement system is connected to the device under test (DUT).

Probe head assembly

The probe head is designed for ease of use and high performance. 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 for high-fidelity ground connections.
  3. The stabilization notch permits you to use adjacent pins to reduce stresses on the probe and pins.

Probe input

The probe is electrically protected against static voltage. However, applying voltages above its design limits may damage the probe tip amplifier.

Input Linear Dynamic Range

The probe head amplifier used by the probe has a limited linear operating range. To keep the input linearity error less than 1% you must limit the signal input voltage to ±4 V (including any DC offset).

Figure 1. Dynamic and offset limitations


Probe offset

The probe offset is adjustable for operation within the linear range of the probe, and to increase the sensitivity of the probe at higher DC measurement voltages. Using the offset to cancel DC signal components enables optimal probe performance.

Before you begin

See your oscilloscope manual for specific instructions on using the offset control.

The probe has a ±10 V offset range. The linear operating range is ±4 V. If cursors are used on the oscilloscope, the zero reference will be at the probe offset voltage. When you adjust the probe offset with no signal applied to the probe input, the output range is ±4V, (the linear operating range of the probe), not the ±10V offset range of the probe. However, when you apply ±10V to the probe input, the probe offset control can zero this offset.

Procedure



  1. Use the vertical position control to set a zero reference level on the oscilloscope display.
  2. Set the oscilloscope coupling to DC and 5 V/div.
    This sets the oscilloscope to display the full offset dynamic range of the probe.


  1. Attach the probe to the circuit.
  2. Adjust the probe offset to bring the trace to the oscilloscope zero reference.
  3. Change the volts/division setting to the desired range, adjusting the offset to keep the trace on the zero reference level.

Standard accessories

This section lists the standard accessories and provides information on how to use the accessories.

Specifications are provided where appropriate so that you can choose the accessory that best fits your needs. In some cases, reorder kit quantities differ from the actual number of accessories included with the probe.

Push-in probe tip

Use the push-in probe tip for general purpose probing by hand. You can also use the push-in probe tip with the other socketed leads and adapters.

Push the tip into the socket until it is seated. Either end of the tip may be used. Do not force the tip. Also, be careful not to injure yourself on the sharp point.

The Tektronix part number is 131-5638-XX (quantity 10).



SureToe adapter

The SureToe adapter is a pointed probe tip useful for probing in dense circuitry. Attach the SureToe adapters 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. Four SureToe adapters are included with the probe.

The Tektronix part number is 131-6254-XX (quantity 4).



Pogo pin ground

Use the low-inductance ground pogo pin to substantially reduce ground lead inductance and to easily 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 possible.

The Tektronix part number is 016-1772-XX (quantity 10).



Square pin socket

The square pin socket is ideal for use with signal/ground pairs on 0.100-inch square header pins. Attach the socket by gently pressing it into the ground socket on the probe head.

Be sure to use the stabilization notch whenever possible to avoid slipping and damaging the probe or circuitry under test.

The Tektronix part number is 016-1773-XX (quantity 10).



Customizable ground lead

You can bend or shorten this ground lead. Cut the tip of the ground lead wire at a 30° to 60° angle to ease insertion into the ground socket of the probe.

To maintain signal fidelity while probing, use as short a ground path as possible.

The Tektronix part number is 196-3482-XX (quantity 5).



Right-angle adapter

Use the right-angle adapter for low-profile probing of 0.025-inch square pins. The right-angle adapter allows the probe to lie flat 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 leads.

Attach the right-angle adapter the same way as the push-in probe tip.

The Tektronix part number is 016-1774-XX (quantity 10).



Y-Lead adapter and ground leads

Use the Y-lead adapter to extend the reach of the probe and ground. The Y-lead adapter accepts any of the probe tips or adapters, and can be pushed directly onto 0.025 inch square pins.

Use the 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 grounding connection, maintain as short a ground path as possible.

The Tektronix part number is 196-3456-XX. The kit includes: Y-lead adapter (quantity 2), Three-in ground leads (quantity 3).



SMT KlipChip adapter

Use the SMT KlipChip test clips to access fragile, dense circuitry. KlipChip test clips can be connected to the Y-lead or 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 tested, the flexible sleeve of the KlipChip bends up to a 35° angle.

The Tektronix part number is 206-0569-XX (quantity 1).



Color band kit (five colored pairs)

  1. Attach one 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.

The Tektronix part number is 016-1315-XX (set of five colors).



Antistatic wrist strap

When using the probe, always work at an antistatic work station and wear the antistatic wrist strap.

The Tektronix part number is 006-3415-XX.



Pouch, nylon carrying case with inserts

Use the carrying case to hold the probe and accessories.
  1. Place the probe and accessories in the carrying case.
  2. Close the carrying case to transportation or storage.

The Tektronix part number is 016-1952-XX.



Optional accessories

This section lists the optional accessories that you can purchase to help you with your probing tasks.

IC micro-grabber

Use the IC Micro-Grabber to probe the leads on integrated circuits that are surface-mounted.

The Tektronix part number is 013-0309-XX (quantity 2).



SMA-to-probe tip adapter

Use the adapter to connect the probe to SMA cables and for calibration and performance verification. The adapter includes a 50 Ω SMA termination.

The Tektronix part number is 015-0678-XX.



TekVPI calibration fixture

The 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.

The Tektronix part number is 067-1701-XX.



Ground lead length

When you are probing a circuit, you should always use as short a ground lead as possible between the probe head and circuit ground.

Figure 1. Effects of lead length on waveform distortion


The series inductance added by the probe tip and ground lead can result in a resonant circuit; this circuit may cause parasitic ringing within the bandwidth of your oscilloscope.

Ground lead inductance

When you touch your probe tip to a circuit element, you are introducing a new resistance, capacitance, and inductance into the circuit.



You can determine if ground lead effects may be a problem in your application if you know the self-inductance (L) and capacitance (C) of your probe and ground lead. Calculate the approximate resonant 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 measurements are affected by ringing, your goal is to lower the inductance of your ground path until the resulting resonant frequency is well above the frequency of your measurements.

The low-inductance ground contacts described in Accessories can help you reduce the effects of ground lead inductance on your measurements.

Low-inductance grounding

Use a ground plane on the package to make probing the package easier, and to avoid adding unnecessary ground lead length and distortion.

About this task

This method is very useful when making many measurements on the same package.

Procedure



  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 length as short as possible.

SureFoot Grounding

If you cannot use the low-inductance grounding method recommended, the probe may be grounded to the package under test using a SureFoot™ adapter.

About this task

This method is preferred over using an adjacent circuit ground because it is the shortest ground path possible.

Procedure



  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.

Probe tip test points

The push-in probe tip or a 0.025-inch square pin can be soldered into a circuit to be used as a temporary test point.

Before you begin

Do not use pieces of solid-core copper wire as test points. If the wire breaks off in the probe tip socket, it may be impossible to remove the wire, and it will prevent insertion of other accessory tips.

The probe tip may be removed and reused by desoldering it from the circuit, and soldering it into another circuit in the future.

Procedure



  1. Solder the tip onto a lead or pin with a low-power soldering iron.
  2. Press the probe head onto the tip to take a measurement.
  3. Pull the probe head off when you are done.

Probe tip stabilization

The probe head has a stabilizing notch for use with 0.100 inch-spaced header pins.

Procedure



  1. Press 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-ground adapter can rest on the stabilized pin without a risk of its moving out of place.

Specifications

The specifications are valid under the following conditions.

  • The probe has been calibrated at an ambient temperature of 23 °C ±5 °C.
  • The probe is connected to a host instrument with an input impedance of 50 Ω .
  • The probe 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.
  • The Signal Path Compensation (SPC) has been run on the oscilloscope before testing the probe specifications.

The Warranted, Typical, and Mechanical characteristics apply to all probe models unless noted otherwise.

Warranted characteristics

Warranted characteristics describe guaranteed performance within tolerance limits or certain type-tested requirements. Warranted characteristics that have checks in the Performance Verification section are marked with the ✔ symbol.

CharacteristicDescription
✔ DC attenuation accuracy (probe only)10:1 ±2% (excludes offset error)
✔ Rise time (probe only)≤140 ps (TAP2500)
≤130 ps (TAP3500)

Environmental requirements

CharacteristicDescription
TemperatureOperating: 0 to +50 _C (+32 to +122 °F)
Nonoperating: -40 to +71 °C (-40 to +160 °F)
HumidityOperating: 5-95% RH, tested up to +30 °C (+86 °F) 5-85% RH, tested at +30 °C to +50 °C (+86 to +122 °F)
Nonoperating: 5-95% RH, tested up to +30 °C (+86 °F) 5-85% RH, tested at +30 °C to +75 °C (+86 to +167 °F)
AltitudeOperating: Up to 3000 meters (9,843 feet)
Nonoperating: Up to 12,000 meters (39,370 feet)

Typical characteristics

Typical characteristics describe typical but not guaranteed performance.

Table 1. Typical electrical characteristics
CharacteristicDescription
Rise time (probe only)≤115 ps (TAP4000)
Bandwidth (probe only)DC to ≥2.5 GHz (TAP2500)
DC to ≥3.5 GHz (TAP3500)
DC to ≥4 GHz (TAP4000)
Input resistance40 kΩ
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 destructive input voltage±30 V(DC + peak AC)
Linearity±0.1% or less over a dynamic range of -3.75 V to +3.75 V ±1.0% or less over a dynamic range of -4.0 V to +4.0 V.
DC offset drift1.5 mV/ °C or less displayed on screen
Signal delay5.3 ns ±0.2 ns
Figure 1. TAP2500 Typical bandwidth


Figure 2. TAP3500 Typical bandwidth


Figure 3. TAP4000 Typical bandwidth


Figure 4. Typical input impedance and phase versus frequency


Table 2. Typical mechanical characteristics
CharacteristicDescription
Dimensions, compensation box107 mm × 41 mm × 26 mm (4.2 in × 1.6 in × 1.0 in)
Dimensions, probe head19.43 mm × 3.30 mm × 7.6 mm (0.765 in × 0.130 in × 0.300 in)
Dimensions, cable length1.3 m (51 in); from the probe head to the compensation box)
Unit weight1.55 kg (3.44 lbs); probe, accessories and packaging


Nominal characteristics

Nominal characteristics describe guaranteed traits, but the traits do not have tolerance limits.

CharacteristicDescription
Input couplingDC
TerminationTerminate output into 50 Ω
CompatibilityOscilloscopes equipped with the TekVPI interface
Pollution Degree2, Indoor use only

Performance verification

The procedures that follow verify the warranted specifications of the probe.

The recommended calibration interval is one year. Perform the verification procedures in the order listed.

Table 1. Equipment required
Description and quantityPerformance requirementRecommended example
OscilloscopeTekVPI InterfaceTektronix DPO7000 Series, Tektronix 6 Series MSO
Sampling oscilloscope≥12.5 GHz bandwidthTektronix TDS8000 Series, Tektronix DSA8300
Sampling module≥12.5 GHz bandwidthTektronix 80E0X
Sampling moduleTDR output: 250 mV step, <30 ps rise timeTektronix 80E04
TekVPI Calibration/Verification adapterTekVPI Interface067-1701-XX
DC voltage source-1.0 to +1.0 VDC, 0.2% accuracyWavetek 9100
Digital multimeter (DMM)Resistance, 0.1% accuracyKeithley 2700
HF Probe Tip adapterProbe tip adapter with 50 Ω termination015-0678-XX
SMA M-to-BNC F adapterSMA male-to-BNC female015-0554-XX
BNC-to-dual banana adapter (2)-103-0090-XX
BNC cable50 Ω , 0.76 m (30 in) length012-0117-XX
SMA cable (2)Male-to-Male SMA cable012-0649-XX
Precision termination50 Ω , 0.1%, 0.5 W011-0129-XX
Y-Lead adapter0.25-in square pins for probe tip connections196-3457-XX (standard accessory)
SMT KlipChip adapters (2)0.25-in square pins-to-mini clips206-0569-XX (standard accessory)
SMA torque wrench5/16-in, 7 in-lb.-
SMA adapter wrench7/32-in-

Nine-digit part numbers (xxx-xxxx-xx) are Tektronix part numbers.

Equipment setup

Use the following procedure to set up and warm up the equipment to test the probe.

Procedure



  1. Turn on the TekVPI oscilloscope.
  2. Connect the TekVPI Calibration/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 equipment.
  5. Allow 20 minutes for the equipment to warm up.

DC gain accuracy

This test checks the DC gain accuracy of the probe.

Procedure



  1. Connect the BNC-to-dual banana adapter to the DMM input.
  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 BNC cable between the precision termination and the BNC-to-dual banana adapter attached to the DMM.


  1. Connect the second BNC-to-dual banana adapter to the output of the DC voltage source.
  2. Connect the Y-lead adapter and KlipChip adapters to the probe input.
  3. Attach the KlipChip adapters to the BNC-to-dual banana adapter connected to the DC voltage source.
    Make sure the polarity is correct-ground to outer shield and probe input to center conductor.


  1. Set oscilloscope offset to 0.0 V.
  2. Set the DMM to DCV.
  3. Press the REL (relative) button to Zero the DMM.
  4. Set the DC voltage source to +1.00 VDC and enable the output.
  5. Record the DMM measurement in the test record.
  6. Set the DC voltage source to -1.00 VDC.
  7. Record the DMM measurement in the test record.
    An unacceptable error value may result if a precision 50 Ω termination is not used for the recommended termination, or if the oscilloscope offset is not set to zero.
  8. Leave the TekVPI Calibration/Verification adapter and probe connected the oscilloscope to keep the probe warm.

Rise time

This procedure verifies that the probe meets the rise time specification.

Before you begin

CAUTION:To prevent damage, use care when working with SMA connectors: support equipment to avoid mechanical strain on the connectors, and when tightening connections, use a torque wrench to 7.5 in-lbs.

About this task

Two rise times are measured; the test system alone, and then 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. 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 channels can be used. However, the TDR function is only available on 80E04 sampling heads.

Procedure



  1. Connect the 80E04 sampling head 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 to the HF Probe Tip adapter.


  1. Remove the 50 Ω termination from the HF Probe Tip adapter and connect the SMA cable from Channel 8 to the adapter.
  2. Turn on Channel 8 and set the vertical scale to 50 mV/div.


  1. Set the Channel 1/2 sampling head to TDR mode, press the SETUP DIALOGS button and select the TDR tab.
  2. Set the Channel 1 (C1) Polarity to positive (rising).
  3. Set the Preset of Channel 1 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 scale, position, and reference. The sampling module will turn on a red light next to the SELECT channel button, indicating that TDR is activated for that channel.


  1. Turn off the display for Channel 1 so that only Channel 8 is shown on screen.
  2. Adjust the oscilloscope horizontal and vertical position controls to display a signal similar to that shown.
  3. Set the oscilloscope horizontal scale to 50 ps/div and center the waveform.
    Do not touch the HF Probe Tip adapter when making calibration measurements. Measurement accuracy is degraded when the probe tip adapter is handled.
  4. 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 determined from the 10% and 90% amplitude points on the waveform. Record the rise time as ts.


  1. Disconnect the SMA cable from the Channel-8 side of the HF Probe Tip adapter and reconnect the 50 Ω SMA termination to the adapter.
  2. Connect the SMA cable from Channel 8 of the sampling oscilloscope to the SMA connector on the TekVPI Calibration/Verification adapter.
  3. Connect the probe to the HF Probe Tip adapter.
  4. Set the TekVPI oscilloscope offset to 0.0 V.
    The following measurements are taken with the sampling oscilloscope. The TekVPI oscilloscope only provides power and offset to the probe.


  1. On the sampling oscilloscope, expand the horizontal scale to locate the step edge.
    1. Set the vertical scale to 5 mV/div.
    2. Adjust horizontal range to 100 ps/div while maintaining the edge view.
    3. For a more stable measurement display, turn averaging on.
    Do not touch the HF Probe Tip adapter when making calibration measurements. Measurement accuracy is degraded when the probe tip adapter is handled.


  1. Adjust the position controls on the sampling oscilloscope to display the entire leading edge waveform.
  2. Use the measurement capability of the sampling oscilloscope to display rise time.
    1. Increase the stability of the pulse edge measurement by using averaging, if available.
    2. Rise time is determined from the 10% and 90% amplitude points on the waveform. Record the rise time as ts+p.


  1. Using the test system rise time (ts) that you measured in step 13, and the test system and probe rise time (ts+p) that you measured in step 20, calculate the probe-only rise time using the formula shown.
  2. Check that the calculated rise time meets the probe specification.
  3. Record the results on the test record.

Test record

Use the test record to record the values of the performance verification checks.

Probe Model/Serial Number:

Certificate Number:

Temperature:

RH %:

Date of Calibration:

Technician:

Performance testSource voltageMinimumMeasuredCalculatedMaximum
DC Gain Accuracy+1.00 VDC+98 mV

NA+102 mV
-1.00 VDC-102 mV

NA-98 mV
Rise TimeTAP2500NANA

140 ps
TAP3500NANA

NA

130 ps
TAP4000NANA

NA

115 ps

Maintenance

This section contains maintenance information for your probe.

Note:There are no user replaceable parts within the probe. Refer to Accessories for a list of replaceable accessories for your probe.

Cleaning

Protect the probe from adverse weather conditions. The probe is not waterproof.

CAUTION:To prevent damage to the probe, do not expose it to sprays, liquids, or solvents. Avoid getting moisture inside the probe during exterior cleaning.

Do not use chemical cleaning agents; they may damage 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 dirt remains, use a soft cloth or swab dampened with a 75% isopropyl alcohol solution. A swab is useful for cleaning narrow spaces on the probe, use only enough solution to dampen the swab or cloth. Do not use abrasive compounds on any part of the probe.

Returning instrument for service

Use the following instructions for returning your instrument for service.

When repacking the instrument for shipment, use the original packaging. If the packaging is not available or unfit for use, contact your local Tektronix representative to obtain new packaging.

If you need to return your instrument for repair or calibration, call 1-800-438-8165 or complete the form at tek.com/services/repair/rma-request. When you request service, have the serial number, firmware, and software version of the instrument.

If you want to see the warranty or service agreements on your products, or if you want to create your own service price estimate, visit our quick service quote site at tek.com/service-quote.

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