TDP7700 Series
TriMode™ Probes
User Manual
*P071355901*
071-3559-01
TDP7700 Series
TriMode™ Probes
User Manual
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Table of Contents
Table of Contents
List of Figures.............................................................................................................................................................................. vii
List of Tables...............................................................................................................................................................................viii
Warranty....................................................................................................................................................................................... ix
Important safety information..........................................................................................................................................................x
General safety summary........................................................................................................................................................ x
Terms in the manual...............................................................................................................................................................x
Terms on the product............................................................................................................................................................. x
Symbols on the product.........................................................................................................................................................xi
Compliance Information...............................................................................................................................................................xii
Environmental compliance................................................................................................................................................... xii
Key features................................................................................................................................................................................ 13
Operating considerations............................................................................................................................................................ 14
Installation overview....................................................................................................................................................................15
Connect to the host instrument............................................................................................................................................ 15
Connect accessories to the TekFlex connector................................................................................................................... 16
TriMode probing...................................................................................................................................................................17
Probe comp box controls and indicators..............................................................................................................................17
Functional check......................................................................................................................................................................... 19
Basic operation........................................................................................................................................................................... 22
Offset voltage.......................................................................................................................................................................22
Using the offset voltages......................................................................................................................................................22
Probe setup panel ...............................................................................................................................................................22
Selecting the offset voltage...........................................................................................................................................24
Offset tracking set up....................................................................................................................................................24
Termination voltage.......................................................................................................................................................24
Probe tip information.....................................................................................................................................................25
Improving measurement accuracy.......................................................................................................................................25
Probe architecture........................................................................................................................................................ 25
Solder-in tip connection wire length..............................................................................................................................26
Using offset voltage to extend TDP7700 series solder-in tip input voltage range.........................................................26
Making single ended measurements using the P77BRWSR differential probe tip....................................................... 26
Temperature compensation.......................................................................................................................................... 27
DSP correction..............................................................................................................................................................27
Solder tip measurement configuration.......................................................................................................................... 27
Connecting to a circuit board............................................................................................................................................... 27
Tip soldering.........................................................................................................................................................................30
Recommended equipment............................................................................................................................................30
Precautions when connecting to the circuit..........................................................................................................................34
Care of TekFlex solder-in tips.............................................................................................................................................. 35
Probe handling best practices.....................................................................................................................................................36
Accessories and options............................................................................................................................................................. 37
Standard accessories.......................................................................................................................................................... 37
Optional accessories............................................................................................................................................................37
Maintenance................................................................................................................................................................................40
TDP7700 Series TriMode™ Probes User Manual v
Table of Contents
Browser tip replacement...................................................................................................................................................... 40
Error conditions....................................................................................................................................................................40
LED indicators.............................................................................................................................................................. 40
Signal display................................................................................................................................................................40
Measurement errors......................................................................................................................................................41
Handling the probe...............................................................................................................................................................41
Cleaning the probe...............................................................................................................................................................41
Returning the probe for servicing.........................................................................................................................................41
Index........................................................................................................................................................................................... 43
TDP7700 Series TriMode™ Probes User Manual vi
List of Figures
List of Figures
Figure 1: Simplified probe input model........................................................................................................................................22
Figure 2: Probe setup panel .......................................................................................................................................................23
Figure 3: Simplified probe architecture diagram......................................................................................................................... 25
Figure 4: Solder tip measurement configuration......................................................................................................................... 27
TDP7700 Series TriMode™ Probes User Manual vii
List of Tables
List of Tables
Table 1: TDP7700 Series TriMode probes.................................................................................................................................. 14
Table 2: Required equipment, functional check with probe tip.................................................................................................... 19
TDP7700 Series TriMode™ Probes User Manual viii
Warranty
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from
the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will
repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective
product. Parts, modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like
new performance. All replaced parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage
resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the
use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other products when the
effect of such modification or integration increases the time or difficulty of servicing the product.
Warranty
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR
REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE
VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
[W2 – 15AUG04]
TDP7700 Series TriMode™ Probes User Manual ix
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.
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 is not intended for detection of hazardous voltages.
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 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, 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 in wet/damp
conditions
Do not operate in an explosive
atmosphere
Keep product surfaces clean and
dry
Be aware that condensation may occur if a unit is moved from a cold to a warm
environment.
Remove the input signals before you clean the product.
Important safety information
Probes and test leads
Remove all probes, test leads and accessories that are not in use.
Inspect the probe and
accessories
Terms in the 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.
Terms on the product
These terms may appear on the product:
• DANGER indicates an injury hazard immediately accessible as you read the marking.
• WARNING indicates an injury hazard not immediately accessible as you read the marking.
• CAUTION indicates a hazard to property including the product.
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.
Use only specified replacement parts.
TDP7700 Series TriMode™ Probes User Manual x
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 may appear on the product:
Important safety information
TDP7700 Series TriMode™ Probes User Manual xi
Compliance Information
This section lists the EMC (electromagnetic compliance), 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.
Environmental compliance
This section provides information about the environmental impact of the product.
Restriction of hazardous substances
Complies with RoHS2 Directive 2011/65/EU.
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.
Compliance Information
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 (www.tek.com/productrecycling).
TDP7700 Series TriMode™ Probes User Manual xii
Key features
The TDP7700 Series TriMode Probes allow you to take differential, single-ended, and common mode measurements with
one probe connection. Key features include:
• Low loading for low power standards like MIPI D-PHY
• Thin flexible solder-in tips that can fit into tight spaces on a device under test
• Lightweight and Flexible probe cable and head
• TekFlex™ connector technology that makes the probe easy to connect to accessories
• Optional 2.92 mm adapter for connecting to 50 Ω RF test points
• Browser accessory with adjustable tip and auto corrected response to pin spacing
• Full AC calibration of the probe and accessory tips with unique S-parameters automatically downloaded to the scope at
plug-in.
• Flexible solder-in tips and main probe cable
• Solder-in tips operate at extended temperature range
Key features
TDP7700 Series TriMode™ Probes User Manual 13
Operating considerations
Table 1: TDP7700 Series TriMode probes
Characteristic Description Specification
Operating considerations
TekFlex solder-in tips P77BRWSR P77C292MM adapter
Input Voltage Dynamic range 2.5 Vpp (single-ended)
5.0 Vpp (differential
input)
Operating voltage
window
Offset voltage range -4 V to +4 V -10 V to +10 V -4 V to +4 V
Maximum nondestructive input voltage
Temperature Operating Probe compensation box: 0 °C to 50 °C (32 °F to 122 °F)
Non-operating Probe compensation box: -20 °C to 60 °Cg (-4 °F to 140 °F)
Humidity Operating Probe compensation box: 5% to 90% Relative Humidity (%RH) at up to 40
±5.25 V ±10.0 V ±4.0 V
-15 V to +15 V (tip attached or detached) -5 V to +5 V
Probe cable, solder tips, and P77C292MM adapter: -35 °C to 85 °C (-31 °F
to 185 °F); Minimum Airflow required 46°C to 85°C (114.8 °F to 185 °F)
Probe cable, solder tips, and P77C292MM adapter: -35 °C to 85 °C (-31 °F
to 185 °F)
°C non-condensing, 5% to 55% RH above 40°C up to 50°C non-condensing
6.0 Vpp (single-ended)
12.0 Vpp (differential
input)
1.2 Vpp (single-ended)
2.0 Vpp (differential
input)
Probe cable, solder tips, and P77C292MM adapter: 20% to 80% Relative
Humidity (%RH) at up to 50 °C non-condensing
Non-operating Probe compensation box: 5% to 90% Relative Humidity (%RH), at up to 40
°C non-condensing, 5% to 55% RH above 40 °C up to 60 °C noncondensing
Probe cable, solder tips, and P77C292MM adapter: 10% to 85% Relative
Humidity (%RH), at up to 85 °C non-condensing
Altitude Non-operating Probe Compensation Box, Cable, Tips, and SMA adapter: 12,000 meters
(39,370 feet)
Pollution Degree 2, Indoor use only
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 you handle the probe.
TDP7700 Series TriMode™ Probes User Manual 14
Installation overview
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 you handle the probe.
1. Connect the probe to the host instrument.
If it is the first time the probe has been connected to the oscilloscope, the oscilloscope will download the S-parameters
stored in the probe and cycle through the LEDs. Once the oscilloscope has stored the S-parameters for the probe, it
doesn’t matter which channel the probe is plugged into. The stored S-parameters will be available for any channel the
probe is moved to.
2. Connect the probe tip to the TekFlex connector on the probe.
When a tip is inserted into the probe for the first time, the oscilloscope will download the S-parameter data stored in the
tip.
3. The probe performs a self test, and then one Input Mode LED remains on. The Status LED is also lit green.
4. Double-tap the channel badge to open the configuration menu.
5. Tap the Probe Setup panel to open the Probe Setup panel to confirm probe settings.
6. Use the Probe Setup panel to set the probe parameters as described in the Basic operation section.
Connect to the host instrument
Installation overview
Note: Your FlexChannel instrument may require a firmware upgrade to support full functionality of the TDP7700
Series probes.
1. Slide the probe into the FlexChannel receptacle. The probe clicks into place when fully engaged.
2. Move the locking lever to the locked position.
Disconnect
To disconnect the probe, move and hold the locking lever at the unlocked position and pull out the probe.
TDP7700 Series TriMode™ Probes User Manual 15
Installation overview
Probe and probe tip power-on
After the connection to the oscilloscope is made:
1. The probe cycles through all mode LEDs during a self-test and while S-Parameters are transferred to the instrument,
and then the A – B Input Mode LED remains on. If a probe tip is attached, an LED on the tip also turns on when properly
attached to the probe1.
2. The probe transfers data from the probe and tip to the host instrument.
The data transfer takes a few minutes, and is only done when the host instrument discovers a new probe or new probe
tip. The data transfer only occurs on instruments that are fully compatible with the probe.
3. After the data transfer is done, the probe is ready for a functional check. See Functional check. If the probe’s status LED
is red, the power-on self-test likely failed. See Error conditions on page 40.
Connect accessories to the TekFlex connector
All of the TDP7700 accessories mate with the new TekFlex (zero insertion force) connector. This connector provides an
easy connection for attaching to the TDP7700 series accessories. The following procedures show the steps for connecting
probe tips to the TekFlex connector; the procedures for connecting to other accessories are similar.
Connect the tip to the probe TekFlex connector as follows:
1. Pinch the TekFlex connector to open the jaws.
2. Orient the tip with the probe head (notch to the left) and slide the tip connector into the TekFlex connector.
A green LED will light up when the tip is inserted1. The LED is the first indication that the tip is powered and is inserted.
You also need to confirm that the connector pins on the TekFlex connector fit through the alignment holes on the tip.
3. Once the tip is fully inserted, release the pinch and the TekFlex connector closes. When closed and properly seated, the
top of connector will be flush with the probe tip housing.
1
The P77C292MM does not contain an LED.
TDP7700 Series TriMode™ Probes User Manual 16
TriMode probing
The TriMode feature allows you to view two single-ended signals and the resultant differential waveform and common-mode
voltage without moving the probe connection. Press the Input Mode button to cycle through the waveform views.
This example shows a typical signal on the A and B inputs. The resultant differential waveform and common-mode voltage
are shown.
Installation overview
Probe comp box controls and indicators
Status LED
The Status LED glows red under the following conditions:
• Probe power-on self test failure
• Probe over-temperature detected
• The input voltage on either the A or B input exceeds the allowable limit or more than 50 mA is drawn by the inputs on
the P77C292MM
The Status LED is green when the condition causing the warning is removed and under normal operation. A notifier
message of a probe status condition can also be seen on the oscilloscope.
TDP7700 Series TriMode™ Probes User Manual 17
Installation overview
CAUTION: Do not exceed the input voltage limits of the probe and probe tips. The probe or oscilloscope circuits
may be damaged if the limits are exceeded. Make sure that you understand and work within the limits of the probe
and probe tips.
The TriMode feature allows you to view two single-ended signals and the resultant differential waveform and common-mode
voltage without moving the probe connection. Press the Input Mode button to cycle through the waveform views.
Input mode buttons and LEDs
The TDP7700 Series solder-in tips support TriMode operation. TriMode enables you to switch the probe between four
different measurement types without changing the probe’s connection.
Press the Input Mode button to select one of the four TriMode measurements. The modes cycle in the following sequence:
• A – B (for differential signal measurement)
• A – GND (for A input single-ended measurement)
• B – GND (for B input single-ended measurement)
• (A + B)/2 – GND (for common mode measurement)
Note: You can also change the Input Mode in the oscilloscope Probe Setup panel.
TDP7700 Series TriMode™ Probes User Manual 18
Functional check
After you connect the probe to the oscilloscope, you can perform a functional check using either the optional P77DESKEW
deskew fixture designed for the probe or the optional P77C292MM Adapter.
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 you handle the probe.
The following procedure checks the four TriMode settings on the probe. It verifies the signal path of both the probe A and B
input signals and their combination in the four TriMode settings.
Table 2: Required equipment, functional check with probe tip
Item Description Performance Requirement Recommended Example
Oscilloscope FlexChannel Interface Tektronix MSO6 Series
Probe tip Solder tip or Browser tip P77STFLXA
Functional check
Test board Probe deskew fixture
Signal generator 100 kHz square wave, 1 V
Test setup with the P77DESKEW deskew fixture
pk-pk
into 50 Ω
P77DESKEW
2
6 Series MSO AFG output
2
1. Connect an SMA cable from a signal source, such as the AFG output connector on the oscilloscope to the A input of the
fixture.
2. Connect the probe to the desired channel of the oscilloscope.
3. Set the oscilloscope to display the connected channel.
2
Optional accessory
TDP7700 Series TriMode™ Probes User Manual 19
Functional check
4. Connect the included P77STFLXA TekFlex solder in tip to the TDP7700 probe using the pinch to open TekFlex
connector at the end of the main cable. Insert the P77STFLXA in to the plastic clamp on port 1 or 2 of the deskew
fixture. This is done by compressing the spring-loaded clamp, inserting the probe tip input into the clamp, and then
releasing the clamp so that it locks the connection.
5. Connect the deskew fixture to a USB power source, such as the front panel USB connector on the oscilloscope. The
LEDs on the fixture will turn on.
6. If a P77BRWSR tip is used instead of a solder-down tip to make connection to the Deskew Fixture, the TekFlex
connector of the probe should first be connected to the P77BRWSR tip. The P77BRWSR tip inputs must then be
pressed into place against the A and B signal trace on the deskew fixture. Either of two sets of A and B signal trace
connection points may be used
Test setup with the P77C292MM adapter
1. Connect the probe to the desired channel of the oscilloscope. Connect the probe to the P77C292MM adapter. Set the
oscilloscope to display the connected channel.
2. Connect the A cable from the P77C292MM adapter to the AFG Out connector.
Test procedure
1. Set the signal generator so that it produces a 1 V
2. Set the probe Input Mode to A-B.
3. Adjust the oscilloscope to display a stable waveform (or press the Autoset button). The test signal is a 100 KHz square
wave. The amplitude of the signal is attenuated by 4X, compared to a single path termination, due to the power splitter
built into the deskew fixture.
4. When you see a stable square waveform, check the amplitude. The attenuated amplitude displayed for the test signal
should be about 250 mVpp.
5. Cycle the Input Mode button through the remaining selections and compare the displayed waveforms to the waveform
measured in the setup steps.
• A-B
• A-GND (same amplitude and polarity as previously measured)
• B-GND (the B input is grounded; no signal is measured)
• (A+B)/2- GND (half-amplitude, but the same polarity as previously measured)
TDP7700 Series TriMode™ Probes User Manual 20
100 kHz square wave.
pk-pk
Functional check
6. Change the SMA cable connection from the Deskew Fixture A input to the B input. Repeat the displayed waveform
checks. The measurements should be different as follows:
• A-B (the polarity of the signal will be inverted due to the B signal inversion, although the p-p amplitude should be the
same)
• A-GND (the A input is grounded; no signal is measured)
• B-GND (same amplitude but non-inverted polarity compared to the A-B mode)
• (A+B)/2- GND (half-amplitude, but the same polarity as measured in the B-GND mode)
TDP7700 Series TriMode™ Probes User Manual 21
Basic operation
This section includes information about the probe input limits, using the probe controls, and procedures for connecting the
probe to your circuit.
A simplified input model of the probe is shown below to illustrate the probe offset voltage controls. The probe has two
symmetrical signal inputs, the A input and the B input, which you can display independently or in combination by selecting
the appropriate probe input mode. The probe also has independent offset voltage controls for the probe A and B input
signals.
Figure 1: Simplified probe input model
Basic operation
Offset voltage
The offset voltage adjusts the probe input dynamic range within the larger probe input operating range. The probe input
dynamic range is the region where an input signal is within the linear operating region of the probe. The probe A and B
offset voltages are set and stored as common settings for all four input modes.
Using the offset voltages
The offset voltage shifts the center of the dynamic range, allowing more resolution for inputs not around ground. The size of
the probe input dynamic range depends on the probe tip that you are using and can also depend on the input mode
selected.
To set the offset voltages on the probe, you can use the controls in the Probe Setup panel. See Probe setup panel
on page 22.
To display the Probe Setup panel, double tap the channel badge to open the configuration menu. Tap Probe Setup to open
the Probe Setup panel. Make changes to the offset.
Probe setup panel
Use the Probe Setup panel to adjust the probe input settings for the measurement you are taking. To display the Probe
Setup panel, double-tap the channel badge and then tap Probe Setup. The Probe Setup panel can be used to select the
TriMode Input Mode setting and is also used to adjust the offset voltage controls for the probe tip A and B inputs.
The following pages describe the controls and status fields in the Probe Setup panel.
TDP7700 Series TriMode™ Probes User Manual 22
Basic operation
Figure 2: Probe setup panel
Selecting the TriMode input mode
The input Mode button on the probe toggles the internal probe input selector switches among the four input mode
selections. The mode can also be selected from the Mode list in the Probe Setup panel. This TriMode feature allows full
characterization of a differential signal from a single connection.
A-B mode The A-B Mode is used for making differential signal measurements and represents the traditional differential
probe functionality. Since the A-B Mode measures the difference between the A and B input signals, it eliminates any
common mode voltage, such as a DC bias common to both inputs, within the CMRR performance capability of the probe.
A-GND mode The A-GND mode is used for making single-ended measurements with the probe A input. The probe ground
input connects the probe tip and main cable shield. The A-GND Mode is designed for minimal coupling from any signal
present on the B input within the A input isolation performance of the probe.
B-GND mode. The B-GND mode is used for making single-ended measurements with the probe B input. The probe ground
input connects the probe tip and main cable shield. The B-GND Mode is designed for minimal coupling from any signal
present on the A input within the B input isolation performance of the probe.
(A+B)/2 mode. The (A+B)/2 Mode is used for making common mode measurements on a differential signal and represents
a capability that previously could only be made using oscilloscope math on multiple channels. For a differential signal, the
common mode measurement indicates the DC bias level and also shows the degree of asymmetry between the A and B
inputs. Since the (A+B)/2 Mode measures the average between the A and B input signals, it eliminates any complementary
TDP7700 Series TriMode™ Probes User Manual 23
differential signal voltage, within the DMRR performance capability of the probe. This measurement also requires a ground
connection to the probe.
Selecting the offset voltage
You can set both the A and B offset voltages to levels that are common for all input modes.
You can enter specific offset values directly in the Offset fields.
There are manual offset voltage value entry fields which also display the current offset voltage settings. An offset voltage
entry field is activated for adjustment by taping the setting window. A single tap activates both the setting window and the
general purpose knobs on the oscilloscope front panel. A second tap in the setting window when activated also brings up a
keypad entry window.
The oscilloscope vertical channel offset control also adjusts the selected Input mode offset voltage field.
Offset tracking set up
The probe A and B signal inputs are sensed, monitored, and averaged by probe internal circuitry and the sensed values are
used by the offset tracking control buttons.
Common Mode Offset Tracking
When this mode is selected Common Mode Offset is set to tracking.
Basic operation
Common Mode Tracking automatically sets the common mode offset to the average of the inputs (A+B)/2.
Differential Mode Offset Tracking
When this mode is selected Differential Mode Offset is set to tracking.
Differential Mode Tracking automatically sets the differential mode offset to the difference of the inputs (A-B).
Termination voltage
For the P77C292MM adapter, the termination voltage adjusts the effective probe DC loading of the 50 Ω input termination.
Use the voltage to minimize the DC loading of the probe input signals. By setting the voltage equal to the DC bias voltage of
the input signal, the probe DC loading is nulled out, as if a DC block was inserted. However, unlike a DC block, the signal
DC voltage is still present at the probe input and might require you to adjust the Offset voltage to move the signal into the
probe input dynamic range. There are some signal measurement applications that benefit from the availability of an
adjustable termination voltage and avoid the need for a pair of bias tees.
The probe A and B termination voltages are common for each of the four input modes. When using the P77C292MM
adapter, the voltage can be adjusted over a limited operating range before reaching an overload condition.If VTerm
Tracking is checked, the termination voltages are set automatically.
TDP7700 Series TriMode™ Probes User Manual 24
Probe tip information
Basic operation
Note: Probe tip ID is fully automatic. Manual selection is not required.
When the probe is first connected to the oscilloscope channel, the oscilloscope queries the probe for status information,
including the probe type, serial number, and the model number of the tip that is connected to the probe. The first time a
probe or probe tip is connected to a host oscilloscope, the probe and probe tip serial numbers are logged and the stored Sparameters are downloaded. If the probe or probe tip are moved to another channel on the same oscilloscope, the logged
information is automatically processed without repeating the download process.
Improving measurement accuracy
This section covers some of the features and characteristics of the probe that can affect the accuracy of your
measurements, and some steps that you can take to improve the performance of the probe.
Probe architecture
The probe measurement setup, as shown in the simplified drawing below, requires a host FlexChannel oscilloscope, a
TDP7700 Series probe, and probe tips. An active probe tip includes a dual input buffer capable of driving the 50 ohm signal
path of the probe TekFlex connector and probe main cable. The dual input buffer is designed for good matching of the A and
B probe tip inputs to support differential measurements.
Figure 3: Simplified probe architecture diagram
TDP7700 Series TriMode™ Probes User Manual 25
The probe tip dual input buffer also provides high DC resistance input attenuators, which are carefully designed to minimize
high frequency loading on the input signals. The attenuation factor of the buffer input attenuators depends on the probe tip
type. Using a different attenuation factor allows you to trade-off dynamic range for noise performance.
The probe comp box contains the main probe amplifier, as shown above. This main probe amplifier has a differential input
termination network that receives the buffered A and B input signals from the active probe tip. The main probe amplifier has
a TriMode input configuration for switching between differential, single-ended, and common-mode measurements. The
probe main amplifier has a wide gain range with variable gain control for calibrated gain performance and to optimize noise
performance. The probe main amplifier is also capable of driving the 50 ohm signal path of the probe FlexChannel interface
with the host oscilloscope.
Solder-in tip connection wire length
There are four via locations for soldering wire connections between the probe tip and the measurement DUT.
The via connections include the probe tip A and B inputs for a differential signal and two ground connections for best
performance and flexibility in connecting to a close DUT ground. In general, the probe tip soldered wire connection length
should be kept as short as possible. In addition, the probe tip A and B input wires should be matched in length for best
Differential mode measurement performance.
The Differential input mode does not require a ground reference wire connection, since the differential measurement
process provides its own virtual ground. The single-ended input modes, which include A-GND mode, B-GND mode, and
Common mode, all require at least one ground wire connection. However, if there is room for another connection and a
circuit ground near the probe tip, hooking up a ground connection is recommended. This might help avoid a situation where
a large potential on the ground plane of the DUT causes the test signal to drift outside of the linear range of the input
amplifier of the probe. Ideally, it is a good idea to hook up the differential inputs and the ground to avoid clipping of the
signal in the probe amplifier.
Basic operation
The measurement performance of the single-ended input modes is affected by the length of the ground wire connection,
with high frequency performance degradation increasing with increased ground wire length. The solder-in probe tip
performance is specified using a test fixture built with a probe tip having a signal wire length of 10 mils (.25 mm) and a
ground wire length of 66 mils (1.7 mm).
Please see the Probing tips for high performance design and measurement application note available for download at the
Tektronix website for more detailed specifications on wire length as it affects tip performance. (See Probing Tips for High
Performance Design and Measurement .)
Using offset voltage to extend TDP7700 series solder-in tip input voltage range
The single-ended linear dynamic range of the TekFlex solder-in tip inputs is specified to be 2.5 V
-1.25 V to +1.25 V with zero volt offset. The dynamic range of TDP7700 Series buffers is limited by the input attenuation
factor, which is 2X for the solder-in probe tips as shown in the simplified drawing. A 4X attenuation factor was selected for
the probe tips as a compromise between dynamic range and noise, since a higher attenuation factor would have increased
probe noise.
Although the dynamic range of the probe tip buffer cannot be extended, it is possible to extend the range over which the tip
dynamic range window can be moved by adjusting the probe offset voltage. The offset voltage range of the TekFlex solderin tips is -4 V to +4 V, which is adjusted using the Probe Setup screen of the oscilloscope or the offset knobs on the
oscilloscope front panel. Using the offset voltage controls, it is possible to make measurements within any 2.5 V
between -5.25 V and +5.25 V. For example, by setting the offset voltage to +3.0 V, it is possible to measure an HDMI signal,
which has a signal swing between about +2.8 V and +3.3 V.
Making single ended measurements using the P77BRWSR differential probe tip
, which is a range from
p-p
window
p-p
A TriMode tip provides solder connections for a DUT ground reference for both the A and B probe inputs making singleended measurements with a TriMode probe tip straightforward. Although the differential input mode of the probe is normally
used to make a differential signal measurement, single-ended measurements can be made using Differential Input mode
TDP7700 Series TriMode™ Probes User Manual 26
when the probe input connections and offset voltage controls are configured properly, This single-ended configuration
process is particularly important to understand when using the tip, since this variable-spacing Browser tip operates only in
Differential Input mode. Differential Input mode provides a measurement of the difference (A – B) between the A and B input
signals. If the probe tip B input is connected to a DUT ground, the resulting Differential Input mode measurement (A – 0 V)
results in a display of the single-ended A input signal response.
When making differential signal measurements, the P77BRWSR Offset Voltage control is normally set to the Commonmode (CM) Tracking mode. With CM tracking mode active, the A and B input signals are monitored and the Offset A and
Offset B settings are both adjusted to match the DC common-mode voltage of the A and B input signals [(A + B)/2]. The
differential Offset voltage should be set manually to the center of the signal voltage swing. The common mode offset should
be set to 1/4 of the signal swing. For a +5 V CMOS logic signal; for example, the differential offset voltage should be set to
+2.5 V and the common mode offset should be set +1.25V. The A signal input voltage should then range from +5 V to 0 V,
which is within the 6 Vp-p dynamic range of the Browser tip as long as the offset voltage is set near the center of its
expected voltage swing. These offset settings maximize the dynamic range of single ended measurements for the
differential browser.
Temperature compensation
These probes employ temperature compensation to optimize measurement accuracy.
To maximize measurement accuracy when the probe is first powered on from a cold start condition, you must allow the
probe and oscilloscope a 20 minute warm-up period. A fan is used to stabilize temperature and may come on from time to
time.
Basic operation
DSP correction
This series of probes contain S-parameter characterization data for the probe, which is downloaded to the attached
oscilloscope when the probe is first connected. The probe tips also contain S-parameter characterization data for the tip,
which is also downloaded to the attached oscilloscope when the probe tip is attached to the probe. This probe and tip
characterization data is used to generate DSP correction filters that improves high frequency measurement accuracy.
Solder tip measurement configuration
In many of the high-frequency signaling standards that the TDP7700 Series probes are designed for, a 50 Ω termination at
the transmitter is in parallel with another 50 Ω termination at the end of the transmission line path, effectively making a 25 Ω
signal source impedance. In this application, the solder tip adapter measurement configuration is designed to pick off the
transmitted signal at a location in the signal transmission path.
The input impedance for a solder tip, Z probe, varies with frequency. For a P77STFLXA tip the DC input resistance is about
50 kΩ and decreases with frequency above about 10 MHz to about 100 Ω above 10 GHz.
Figure 4: Solder tip measurement configuration
Connecting to a circuit board
TriMode tips are necessary to complete the connection between the TDP7700 Series probes and your circuit. The tips are
available as both standard and optional accessories and provide several connection options.
TDP7700 Series TriMode™ Probes User Manual 27
Basic operation
P77BRWSR browser and accessories (Pen wand and hands free Tri-Pod)
The browser connects to the circuit using two tips with very fine point tips. These tips have built-in compliance (0.02”,
0.5 mm) and adjustable spacing (.008-.210” (0.2-5.3 mm)). The browser can be held in place with a hand or can be used
with the hands free Tri-Pod accessory or a probe positioner such as the Tektronix PPM203B. See Making single ended
measurements using the P77BRWSR differential probe tip on page 26.
The browser is a differential only probe accessory, but can be used to measure ground referenced, single-ended circuits as
well. When measuring a ground referenced signal, connect the A side (positive) input to the signal to be measured and the
B side (negative) to the ground connection.
Note: The pins on the browser are small and delicate, so use caution when pressing them to make a connection.
If a probe tip breaks, it can be easily replaced. See Browser tip replacement on page 40.
Flex circuit based solder tips
The flex circuit based solder tips are connected to the circuit using thin (38 AWG) wire connected to the vias on the tip. The
steps to follow when soldering the tip to the circuit are shown in the soldering procedure section below.
The flex circuit based solder tips support TriMode operation. To use TriMode, a minimum of three connections are needed,
the A and B side inputs and one of the ground connections.
TDP7700 Series TriMode™ Probes User Manual 28
Basic operation
The flex circuit based solder tips are made with flex circuit material and can be bent and shaped to fit around or into spaces
where it is difficult to reach a test point.
The minimum bend radius for the flex tips is 0.25 in (6.35 mm). There is no impact on the performance of the tip when it is
bent into a curved shape that conforms to bend radius limits.
Typical life for tips are 30 - 50 bending cycles before replacement is needed.
P77STCABL Solder-in Tip
The P77STCABL solder-in tips have similar input via connections for thin (38 AWG) wire. The steps to follow when
soldering this tip to the circuit are identical to the flex circuit based solder tips and are shown in the soldering procedure
section below. These tips are longer than the flex circuit based solder tips and are more flexible.
These tips support TriMode operation. To use TriMode, a minimum of three connections are needed, the A and B side
inputs and one of the ground connections.
TDP7700 Series TriMode™ Probes User Manual 29
Basic operation
Note: There is no exposed metal surface on the P77STCABL tip except for the TriMode inputs and the TekFlex
contacts.
P77C292MM, 2.92 mm Adapter
Use this adapter to connect a TDP7700 series probe to a DUT with 50 Ω test point connectors. Also use the adapter to
connect to SMA connections.
After connecting the adapter to the flex cable, use the retainer to provide a secure connection to the flex cable to minimize
movement or to attach the adapter to the hand’s free tripod.
An accessory kit is available with linkage adapters for stacking the adapters.
Tip soldering
CAUTION: This procedure uses equipment at high temperature. Avoid touching hot surfaces.
Recommended equipment
• Lead-free solder
• 4 mil diameter (38 AWG) wire
• MetCal Soldering Station + UFTC-7CN04 (Conical UltraFine Soldering Cartridge, max tip temp 775 °F (412 °C)) or
equivalent
TDP7700 Series TriMode™ Probes User Manual 30
Basic operation
• Solder-Wick Rosin SD Size #1 (80-1-10) or equivalent
• Tweezers and sharp wire cutters
Tip soldering procedure
Keep the wires short as possible for best signal fidelity. Soldering wires first to the test points and then attaching the
TDP7700 Solder tips is the best way to keep wire lengths short.
1. Solder wires to the test points. Cut wires with different lengths. This will make it easier to thread the wires onto the
solder tips.
2. Thread tip onto wires. The two middle vias are the A(+) and B(-) inputs of the tip.
You may find it useful to use the double-sided foam tape that was shipped with your probe to hold the probe tip in place.
Note: The double-sided foam tape is only good for one use. For maximum strain relief, always use a fresh
piece of tape each time you attach a tip.
3. With the tip in position, quickly solder the wires to the vias. If the soldering iron is left too long on the tip, it may cause
the 0201 input resistors to reflow and move.
TDP7700 Series TriMode™ Probes User Manual 31
4. Trim wires flush with the board on the probe tip.
Basic operation
5. Attach the ground wire for TriMode input to the probe tip. First add solder to the test point and the nearest ground via on
the solder tip.
6. Second, solder a short piece of wire between the ground via on the tip and the ground test point. This configuration
optimizes the performance of the probe for differential measurements. Longer wires on the ground path will have an
impact on Single-Ended Mode and Common Mode performance. If there is a ground test point conveniently placed, it
would be best to use the same solder technique shown on the A and B inputs of the tip to ensure the shortest ground
path. Once the tip is fully soldered in place, it is recommended to firmly secure the tip to the board using additional foam
tape or hot melt glue.
TDP7700 Series TriMode™ Probes User Manual 32
Basic operation
Tip unsoldering procedure
1. Use small solder-wick to remove the solder and wire from the tip ground via. Size #1 Solder-Wick is recommended due
to the small size of the tip and vias. Do not place the solder wick over the 0201 input resistors and these parts may
accidentally be unsoldered from the board.
2. Use the solder-wick to remove excess solder from the input vias. Again, be careful not to place the solder-wick too close
to the input resistors.
3. If the solder cannot be fully removed from the input via while attached to the test points, it is possible rock the tip side to
side while reflowing the solder in the vias. Since the wires are cut flush to the board, the tip can be slowly removed from
the wires using this method. Once the tip has been removed from the board, use the solderwick to clean out the vias so
the tip can be reused.
If you used double-sided foam tape for strain relief rocking and moving the tip from side to side will loosen the tape's
adhesion to the tip. Do not try to pull the tip directly off of the tape. Pulling the tip up without first breaking the tape's
adhesion can damage the tip.
TDP7700 Series TriMode™ Probes User Manual 33
Precautions when connecting to the circuit
To achieve the best performance and service life of the probe and tips, observe the best practices below when you make
connections:
• Wear the antistatic wrist strap that is supplied with the probe and work at an antistatic-approved workstation.
• The flex circuit based solder tips are built with flexible circuit board material and are susceptible to mechanical
overstress and harsh handling particularly at the ends of the probe tip where the components are mounted. Always
support the probe tips by taping or gluing them to your circuit or by providing a means to prevent strain on the tips and
circuit connections.
• The flex circuit based solder tips contain active circuitry. The majority of the tips, including the cover on the buffer
amplifier, are non-conductive surfaces. However, the back end of the tips includes some small surface mount devices
and pads on the top that present a small risk of shorting with the DUT circuitry. This was necessary to minimize the size
and weight of the probe tips. If you need to use the flex circuit based solder tips where their topside components might
contact the DUT, take care to avoid shorting the exposed circuitry of the tips to the DUT circuitry. Covering these areas
with non-conductive tape is one method to avoid shorting.
• The P77STCABL tip is designed to be more flexible than the flex circuit based solder tips; care should be taken to avoid
bending the connecting cables at too sharp an angle, since overstress can cause damage or reduce signal
performance.
• To preserve the cables and maintain the highest signal fidelity, never kink the wires or put undue stress on them.
Support the probe head by taping it to your circuit or providing a means to prevent strain on the circuit connection.
Basic operation
TDP7700 Series TriMode™ Probes User Manual 34
Care of TekFlex solder-in tips
CAUTION: The top of the tips contain active components and can cause shorting if the tips are mounted top-down
and the discrete components on the back end of the tips come into contact with an active circuit. Ensure that metal
components do not touch anything else.
If the tips are mounted with the top up or if the TekFlex connector is attached, it is unlikely that the components on the board
will contact the active circuit. The covers on the buffer amplifier of the tips are non-conductive. There are no conductive
surfaces on the bottom of the tips except for the TriMode inputs and the TekFlex contacts.
Tip dimensions
The dimensions of the solder tip connections are provided here for reference. You can also design the tip footprint into your
circuit board layout for easier test connections.
Basic operation
TDP7700 Series TriMode™ Probes User Manual 35
Probe handling best practices
Tektronix TriMode probes are quality measurement tools and should be treated with care to avoid damage or performance
degradation due to mishandling. Take the following precautions when handling the probe cables:
• Never over-bend the probe main or tip cables, which can put a permanent kink into the cable. When storing the probe
do not coil it too tightly. It is best to use the protective foam carrying case which is designed to not exceed the minimum
bend radius for the cable of 2.5 inches. The minimum bend radius for the flex cable is 0.25 inches (6.35 mm).
• To maximize probe life, limit the amount of cable twist relative to the probe comp box to ±180 degrees. Always uncoil a
probe cable gently before applying the twisting forces needed to orient the probe head for connection to the probe tip.
Probe handling best practices
• Do not excessively pull or twist the probe cables when positioning the probe for measurements.
• Never crush the cable, as will occur when you run over the probe with a chair wheel or drop something heavy on the
cable.
TDP7700 Series TriMode™ Probes User Manual 36
Accessories and options
You can reorder the following replacement parts and accessories. Note that in some cases, the reorder quantities may differ
from those that ship with the probe.
Standard accessories
The following accessories are shipped with the TDP7700 Series probes. If no quantity is listed, only one of that item is
shipped.
Reorder part number and quantity Description
024-0021-xx This carrying case has several cut-outs to hold the probe and accessories.
Accessories and options
P77STFLXA
020-3167-xx
016-2111-xx
006-3415-xx Antistatic wrist strap. When you use the probe, always work at an antistatic work
– Calibration certificate. A certificate of traceable calibration is provided with every
– Data calibration report. The Data Calibration Report lists the manufacturing test
071-3559-xx User manual. The manual provides instructions for using the TDP7700 Series
Optional accessories
Optional accessory Part and description
Active tips (2 solder tips)
Adhesive tape
Color bands
station and wear the antistatic wrist strap.
probe.
results of your probe at the time of shipment and is included with every probe.
TriMode Probes. Other documents, such as the technical reference and other probe
literature are located on the Tektronix web site (www.tek.com/manuals).
P77STCABL, Solder-in active tip
This tip provides a soldered, multi-point connection that
supports full TriMode measurement capabilities at full probe
bandwidth.
P77STFLXA Flex circuit based solder tips
These tips use flex circuit material and provide soldered,
multi-point connections. Designed for the lowest loading
across the full bandwidth of the probe.
Table continued…
3
2 tips included with probe.
TDP7700 Series TriMode™ Probes User Manual 37
3
Optional accessory Part and description
P77STFLXB Flex circuit based solder in tips for memory
interposer probing. These tips use flex circuit material and
provide soldered, multi-point connections. Designed to be
used with Nexus Technology memory interposers.
Accessories and options
017-0103-xx
Wire kit (38 AWG, 4 mil)
P77DESKEW, Deskew fixture
Use this fixture to compensate a probe, deskew up to 2
probes at once, or to perform a probe functional check.
P77BRWSR, Browser accessory includes these items:
Browser wand. Extends the length of the browser for a
more comfortable grip. (Part number 020-3160-xx.)
Browser hands-free tripod. Holds the browser on a test
point without the need to use your hands. (Part number
020-3161-xx.)
Browser replacement tips. Use to repair any browser tips
that are broken with use. (Part number 020-3162-xx.)
Adapter attachment. Attaches the browser to the handsfree tri-pod or other holders.
Ground lead. Attaches the browser to a circuit ground if
necessary.
The browser accessories can be stored in the TekFlex
accessories box that comes standard with the probe.
407-6019-xx, Probe adapter
Use this accessory to attach the browser to the PPM203B.
probe arm/positioner
Table continued…
TDP7700 Series TriMode™ Probes User Manual 38
Optional accessory Part and description
P77C292MM, 2.92 mm adapter
Use this adapter to connect a TDP7700 series probe to a
DUT with 50 Ω test point connectors.
020-3179-xx, Linkage adapter kit
Use the adapters for stacking two or more P77C292MM
2.92 mm adapters.
Use two gray adapters to stack two P77C292MM adapters;
use two black adapters to stack three or four P77C292MM
adapters.
Insert the linkage adapters into the P77C292MM adapters
as shown (gray linkage adapters shown).
Accessories and options
TDP7700 Series TriMode™ Probes User Manual 39
Maintenance
This section contains maintenance and support information for your probe.
Browser tip replacement
Note: Note: It may be helpful to have a magnifying device or glasses when performing this operation.
The tips of the P77BRWSR can break during use. If one of the tips on your browser breaks, it is easy to replace the tip with
a new one and be ready to make measurements again in a few seconds. To replace the tip, you will need a pair of tweezers.
Using the tweezers, grip the shaft of the tip and pull downward to remove it. Dispose of the broken tip.
Maintenance
Once the old tip has been removed, retrieve a new, replacement tip from its storage vial in the accessory kit. Grip the
replacement tip with the tweezers, gently push the tip into the socket on the browser’s front end.
Error conditions
LED indicators
There is a Status indicator LED located on the top plate of the probe comp box. This LED is normally green, but turns red
when any of the following conditions exist and remains red until the problem condition is cleared:
• Probe power-on self-test failure (clear by disconnecting and reconnecting the probe)
• Probe over-temperature detected (clear by disconnecting and reconnecting the probe, allowing time for probe to cool)
• Probe input over-voltage detected (reduce input over-voltage to clear)
• Probe over current detected (adjust V
If the LED is red, disconnect and reconnect the probe to restart the power-on diagnostic sequence. If the symptoms
continue, connect the probe to another oscilloscope channel or oscilloscope. If the symptoms remain, return the probe to
Tektronix for repair.
Signal display
If the probe is connected to an active signal source and you do not see the signal displayed on the oscilloscope:
• Perform an Autoset operation on the host oscilloscope. This will automatically adjust the oscilloscope settings to try to
display a useable waveform.
• Check the probe tip connection at the probe TekFlex connector. The LED on top of the accessory tip should be on if the
tip is connected properly.
• Check that the input signal is within the allowable input voltage range. The Auto Offset control in the Probe Setup menu
can be used to set the offset of the probe voltages to maximize the probe tip input dynamic range.
• Perform a functional check procedure. See Functional check. This procedure will check that the probe is operating
properly.
or remove input signal to clear)
term
TDP7700 Series TriMode™ Probes User Manual 40
Measurement errors
• If you suspect that your measurement may not be accurate, and you are using a solder in connection, check that the
solder tip signal and ground connections are correct and intact.
• Checking the signal measurement in some of the other TriMode Input modes may provide some clue if there is a
measurement problem. For example, operating the probe in DIFF mode does not require a ground connection.
Switching the input mode between DIFF and SE might point out a grounding problem
• If the signal being measured is a differential signal, temporarily swtich the TriMode input on the probe to A only and B
only and verify that each component of the differential signal looks correct. Switch the probe’s input to the common
mode setting and see if there is a large and unexpected common mode signal present on the probe input.
• Perform a Functional Check operation on the probe. This should verify that a fast rise time signal can be measured by
the probe with a comparable probe tip attached. See Functional check.
Handling the probe
This probe is a precision high-frequency device; exercise care when you use and store the probe. The probe and cable are
susceptible to damage caused by careless use. Always handle the probe at the comp box and probe body to avoid undue
physical strain to the probe cable, such as kinking, excessive bending, or pulling. Visible dents in the cable will increase
signal aberrations.
CAUTION: To prevent damage to the probe, always use an antistatic wrist strap connected to a static-controlled
workstation when you handle the probe. The probe input contains electronic components that can be damaged by
contact with high voltages, including static discharge.
Maintenance
Observe the following precautions when using the probe. Do not do any of the following:
• Drop the probe or subject it to physical shock
• Subject the probe to adverse weather conditions
• Kink or fold the probe main cable tighter than a 2.5 inch radius; minimum bend radius for the solder tips is 0.25 inch
(6.35 mm)
• Solder the tips with excessive heat or duration
• Injure yourself with the sharp tips
See Probe handling best practices on page 36.
Cleaning the probe
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 and rinse with deionized water. A swab is useful to clean 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 the probe for servicing
If your probe requires servicing, you must return it to Tektronix. If the original packaging is unfit for use or not available, use
the following packaging guidelines:
Preparation for Shipment
1. Use a corrugated cardboard shipping carton having inside dimensions at least one inch greater than the probe
dimensions. The box should have a carton test strength of at least 200 pounds.
TDP7700 Series TriMode™ Probes User Manual 41
2. Put the probe into an antistatic bag or wrap it to protect it from dampness.
3. Place the probe into the box and stabilize it with light packing material.
4. Seal the carton with shipping tape.
5. Refer to Contacting Tektronix at the beginning of this manual for the shipping address.
Maintenance
TDP7700 Series TriMode™ Probes User Manual 42
Index
A
accessories
standard 37
C
compensation
temperature 27
connecting
tips to the probe TekFlex connector 16
connecting to a circuit board
connecting to circuit with
coaxial adapters
controls and indicators
TriMode
D
dimensions
solder tips 35
documentation 37
DSP correction 27
E
error conditions
LED indicators 40
signal display 40
F
flex circuit description 28
functional check
with deskew fixture 19
with P77C292MM adapter 20
L
LED indicators 16, 17, 40
M
measurement accuracy
improving 25
measurement configuration
solder tip 27
O
offset voltage 22
offset voltage buttons 24
P
P77C292MM adapter
termination voltage 24
P77STCABL 29
probe
handling 36, 41
probe architecture 25
probe connection precautions 34
Probe Setup panel
input mode selection 23
Probe Setup screen
input mode selection 23
offset voltage set buttons 24
R
replacing tips 40
returning the probe 41
H
handling the probe 36, 41
I
improving measurement accuracy 25
Input Mode selection 23
input network 26
input voltage range
extend using offset voltage 26
installation
connecting accessories 16
|
S
signal display errors 40
solder tip dimensions 35
solder-in tips
P77STCABL 29
standard accessories 37
T
TekFlex
connecting accessories 16
dimensions 35
temperature compensation 27
termination voltage 24
tip replaement 40
tip soldering 30
tri-pod accessory
TriMode
probing
W
wire length
solder-in tip connection 26
|
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