Tektronix P7330 User manual

User Manual
P7330
3.5 GHz Differential Probe
071-0758-04
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

Copyright ©Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and
pending. Information in this publication supercedes that in all previously
published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX, TEK, SureFoot, and TekConnect are registered trademarks of
Tektronix, Inc., and KlipChip is a trademark of Tektronix, Inc.

WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects
in materials and workmanship for a period of one (1) year from the date of shipment. If a
product proves defective during this warranty period, Tektronix, at its option, either will
repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the
defect before the expiration of the warranty period and make suitable arrangements for the
performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center 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.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS
DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY
TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF
THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR
HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

P7330 3.5 GHz Differential Probe User Manual i
Preface
This is the User Manual for the P7330 differential probe.
This manual provides operating information, specifications, and a
replaceable parts list.
Related Manuals
If you need to do a performance verification or make internal
adjustments to your probe, refer to the P7330 3.5 GHz Differential
Probe Service Manual, Tektronix part number 071-1057-XX. The
manual is a printable pdf file, and is available on both the Tektronix
website and the Optional Applications CD that is included with
Tektronix oscilloscopes featuring the TekConnect interface.

Preface
ii P7330 3.5 GHz Differential Probe User Manual
Contacting Tektronix
Phone [phone]*
Address Tektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web site www.tektronix.com
Sales
support
1-800-833-9200, select option 1*
Service
support
1-800-833-9200, select option 2*
Technical
support
Email: [e-mail]
1-800-833-9200, select option 3*
6:00 a.m. -- 5:00 p.m. Pacific time
*This phone number is toll free in North America. After office
hours, please leave a voice mail message.
Outside North America, contact a Tektronix sales office or
distributor; see the Tektronix web site for a list of offices.

P7330 3.5 GHz Differential Probe User Manual iii
Table of Contents
General Safety Summary iii............................
Preface v............................................
Related Manuals v....................................
Contacting Tektronix vi.................................
Getting Started 1.....................................
TekConnect Interface 1.................................
Functional Check 3....................................
Options 4............................................
Features and Standard Accessories 5......................
Optional Accessories 9.................................
Operating Basics 11...................................
Input Voltage Limits 12.................................
Maximum Input Voltage 12..............................
Common-Mode Signal Range 12..........................
Differential-Mode Signal Range 12........................
Common-Mode Rejection 12.............................
Probing Techniques to Maximize CMRR 13.................
Input Impedance and Probe Loading 14.....................
Probe Grounding 15....................................
Electrical Effects of Accessories 16........................
Reference 17.........................................
Problems with Single-Ended Measurements 17...............
Differential Measurements 17............................
Common-Mode Rejection Ratio 18........................
Assessing CMRR Error 18...............................
Input Impedance Effects on CMRR 19.....................
Extending the Input Leads 19.............................
Extending the Ground Lead 20............................
Appendix A: Specifications 21...........................
Appendix B: User Service 27............................
Appendix C: Replaceable Parts 29.......................

Table of Contents
iv P7330 3.5 GHz Differential Probe User Manual
List of Figures
Figure 1: P7330 differential probe featuring the
TekConnect Interface 1..............................
Figure 2: Connecting and disconnecting the probe 2..........
Figure 3: Probe functional check connections 3.............
Figure 4: Protect the probe tips with the protective cover 11....
Figure 5: Using the variable spacing adapter 13..............
Figure 6: Using the TwinFoot adapter 13....................
Figure 7: Typical probe input model 14.....................
Figure 8: Probe ground input 15...........................
Figure 9: Typical effects on a signal using probe tip adapters 16.
Figure 10: Simplified model of a differential amplifier 18......
Figure 11: Twisting the input leads 20......................
Figure 12: Typical common-mode gain 24..................
Figure 13: Typical differential input impedance vs frequency 24.
Figure 14: Probe head and compensation box dimensions 25....
Figure 15: P7330 replaceable parts 31......................
Figure 16: P7330 standard accessories 33...................
Figure 17: P7330 optional accessories 35...................

P7330 3.5 GHz Differential Probe User Manual v
General Safety Summary
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. To avoid
potential hazards, use this product only as specified.
To Avoid Fire or Personal Injury
Connect and Disconnect Properly. Connect the probe output to the
measurement instrument before connecting the probe to the circuit
under test. Disconnect the probe input and the probe ground from the
circuit under test before disconnecting the probe from the measure-
ment instrument.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all
ratings and markings on the product. Consult the product manual for
further ratings information before making connections to the product.
The common terminal is at ground potential. Do not connect the
common terminal to elevated voltages.
Do Not Operate Without Covers. Do not operate this product with
covers or panels removed.
Do Not Operate With Suspected Failures. If you suspect there is damage
to this product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.

General Safety Summary
vi P7330 3.5 GHz Differential Probe User Manual
Safety Terms and Symbols
Terms in This Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that
could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that
could result in damage to this product or other property.
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.
Symbols on the Product. These symbols may appear on the product:
CAUTION
Refer to Manual

P7330 3.5 GHz Differential Probe User Manual 1
Getting Started
The P7330 is a high-bandwidth (3.5 GHz) active differential probe
with a miniaturized probe head design. The probe has low circuit
loading, high common-mode rejection, and comes with a variety of
accessories for connecting to surface-mount devices and other
components.
Figure 1: P7330 differential probe featuring the TekConnect Interface
TekConnect Interface
The P7330 probe is powered through a TekConnect Interface
between the probe compensation box and the oscilloscope. The
TekConnect Interface provides a communication path through
contact pins on the host instrument. Power, signal, offset, and probe
characteristic data transfer through the interface.

Getting Started
2P7330 3.5 GHz Differential Probe User Manual
When the probe is connected, the oscilloscope reads EEPROM
information from the probe, identifying the device and allowing the
appropriate power supplies to be turned on. The preamp inputs on the
oscilloscope are ESD protected by remaining grounded until a valid
TekConnect device is detected.
The TekConnect Interface features a spring-loaded latch that
provides audible and tactile confirmation that a reliable connection
has been made to the oscilloscope. Slide the probe into the
TekConnect receptacle on the oscilloscope. The probe snaps into the
oscilloscope when fully engaged. See Figure 2.
To release the probe from the oscilloscope, grasp the compensation
box, press the latch button, and pull out the probe.
Latch button
Figure 2: Connecting and disconnecting the probe

Getting Started
P7330 3.5 GHz Differential Probe User Manual 3
Functional Check
After installing the probe on the oscilloscope, a functional check
may be performed using the PROBE COMPENSATION connections
on the front panel of the oscilloscope. See Figure 3.
Figure 3: Probe functional check connections
1. Connect the probe to the oscilloscope.
2. Set the oscilloscope to display the probe channel.
3. Connect the square pin adapter to the probe tip, and connect the
Y-lead adapter to the square pin adapter. Plug the SMT KlipChips
into the Y-lead adapter.
4. Connect the SMT KlipChips to the PROBE COMPENSATION
connections on the oscilloscope.
5. Adjust the oscilloscope to display a stable calibration waveform.

Getting Started
4P7330 3.5 GHz Differential Probe User Manual
NOTE. If your instrument supports probe calibration routines, now is
a good time to perform them.
6. Disconnect the probe from the PROBE COMPENSATION
connector and connect the two KlipChips together.
7. With the probe offset set to 0.0 V, the oscilloscope display should
be at the ground reference.
8. Set the oscilloscope volts/division to 500 mV.
9. Adjust the probe offset. The displayed waveform should vary
between approximately +1.0 V and --1.0 V.
Options
The following options are available when ordering the P7330 probe:
HOption D1 -- Calibration Data
HOption C3 -- 3 years Calibration Service
HOption D3 -- 3 years Calibration Data (requires Option C3)
HOption R3 -- 3 years Extended Warranty

Getting Started
P7330 3.5 GHz Differential Probe User Manual 5
Features and Standard Accessories
Table 1 shows the features and standard accessories of the P7330
differential probe.
Table 1: P7330 features and standard accessories
Feature/Accessory Description
TekConnect Interface. The TekConnect Interface provides a
communication path between the probe and the oscilloscope.
Contact pins provide power, signal, offset, and probe characteris-
tic data transfer.
The probe snaps into the oscilloscope when fully engaged. To
remove, grasp the compensation box, press the latch button, and
pull the probe out.
+
-- Ground
Input connections. The plus and minus connections on the
probe tip accept the standard and optional probe accessories.
(Some of the accessories connect to the probe tip through the
square pin adapter). The ground lead connects to the probe head
through a slot in the side of the insulated probe housing.
WARNING: Skin penetration hazard. To prevent injury, install the
probe tip cover when the probe is not in use. The probe tips are
extremely sharp to ensure good contact and measurement
integrity.
Probe tip cover. The probe tip cover is shipped on the probe.
The probe tips are extremely sharp to ensure good contact and
measurement integrity. When not using the probe, slide the probe
tip cover over the probe head to prevent damage to the probe tips
and to protect yourself from personal injury.
Tektronix part number: 200-4236-00
Three-inch ground lead (2 ea). Use the ground lead for
connecting the probe ground to the circuit, if needed. The
socketed end of the lead may be connected to accessories, or
fitted onto 0.025-inch square pins.
Tektronix part number: 196-3469-00 (package of 2)

Getting Started
6P7330 3.5 GHz Differential Probe User Manual
Table 1: P7330 features and standard accessories (Cont.)
Feature/Accessory Description
Seated
against
probe head
Variable spacing adapter (4 ea). The variable spacing adapter
fits over the probe tip. Push the adapter onto the probe tip until it
seats against the probe head.
Use the variable spacing adapter to probe any two adjacent leads
or test points spaced between 0.020 and 0.180-inches apart.
Adjust the articulated pins by gently rotating them using a pair of
tweezers.
NOTE: The articulated pins can be bent, but they are fragile. Use
extreme care when bending the pins.
The elastomeric contacts inside the adapter are rated for 50 - 75
insertion cycles with the probe tip. Replace the adapter after
exceeding these limits to avoid unreliable operation.
Tektronix part number: 016-1885-00 (package of 4)
Seated
against
probe head
Square pin adapter (4 ea). Push the square pin adapter onto the
probe tip until it seats against the probe head. Use the square pin
adapter to connect the probe to other accessories, such as the
Y-lead adapter or TwinFoot adapter. The inputs on the adapter
are spaced 0.100-inches apart.
CAUTION: To avoid damaging the square pin connectors, do not
insert anything larger than a 0.025-inch square pin into the inputs.
The elastomeric contacts inside the adapter are rated for 50 - 75
insertion cycles with the probe tip. Replace the adapter after
exceeding these limits to avoid unreliable operation.
Tektronix part number: 016-1884-00 (package of 4)

Getting Started
P7330 3.5 GHz Differential Probe User Manual 7
Table 1: P7330 features and standard accessories (Cont.)
Feature/Accessory Description
TwinFoot adapter (4 ea). Use the TwinFoot adapter to probe two
adjacent leads on a surface-mount integrated circuit. The
TwinFoot adapter connects to the probe through the square pin
adapter. Flexible fingers adapt to a range of lead spacings. See
Figure 6 on page 13.
Tektronix part number: 016-1785-00 (package of 4)
Y-lead adapter (2 ea). The Y-lead adapter connects to the probe
through the square pin adapter. The socketed ends of the leads
may be connected to the probe tips and accessories, or fitted onto
0.025-inch square pins.
Tektronix part number: 196-3468-00 (package of 2)
X-lead adapter (2 ea). The X-lead adapter connects between
accessories fitted with 0.025-inch pins, such as the SMT KlipChip
and Micro KlipChip adapters.
You can use the X-lead adapter with the adapters below to make
connections between the probe tip and your circuit under test.
Be aware of the electrical effects of the added lead length of the
adapters, especially as circuit frequencies increase.
Tektronix part number: 196-3473-XX (package of 1)
SMT KlipChip adapter (2 ea). Use this accessory to probe the
leads on dual-in-line packages (DIP).
Tektronix part number: 206-0364-XX (package of 1)
Cable marker bands Cable marker bands (10 ea). Attach matching pairs of the
marker bands onto the cable at the head and compensation box
of each probe. The marker bands enable quick verification of
which probe is connected to which instrument channel.
Tektronix part number: 016-1315-00 (package of 10)

Getting Started
8P7330 3.5 GHz Differential Probe User Manual
Table 1: P7330 features and standard accessories (Cont.)
Feature/Accessory Description
Plastic accessory box. Use the plastic box to store the probe
accessories when not in use.
Tektronix part number: 006-7164-00
Instrument case. The instrument case protects the probe from
harsh environments and provides room for storing optional
accessories.
Tektronix part number: 016-1879-XX
Calibration certificate. A certificate of traceable calibration is
provided with every instrument shipped.
Accessory reorder sheet.
Use the accessory reorder sheet as a quick guide for ordering
accessories for your probe. The sheet provides photos and part
numbers for identifying your accessories.
Tektronix part number 001-1362-XX
User Manual. Provides instructions for operating and maintaining
the P7330 differential probe
Tektronix part number: 071-0758-XX
Antistatic wrist strap. When using the probe, always work at an
antistatic work station and wear the anti static wrist strap.
Tektronix part number: 006-3415-04

Getting Started
P7330 3.5 GHz Differential Probe User Manual 9
Optional Accessories
Table 2 shows the optional accessories that you can order for the
P7330 differential probe.
Table 2: Optional accessories
Accessory Description
TekConnect Interface calibration adapter. The calibration
adapter is required when a performance verification or adjustment
is done on the probe. It provides connectors and test points for
internal probe measurements.
Tektronix part number 067-0422-00
Probe calibration fixture. Use the probe calibration fixture to
perform some of the calibration procedures. The calibration fixture
connects to signal sources used to test the probe characteristics.
Tektronix part number 067-0419-XX
IEEE1394 Adapter. The IEEE1394 Adapter allows you to probe
signals on the bus, external to system enclosures, without
disturbing system operation. The adapter maintains a balanced
55 Ωsignal path and can be used in both single-ended and
differential modes.
Tektronix part number: 679-5027-00

Getting Started
10 P7330 3.5 GHz Differential Probe User Manual
Table 2: Optional accessories (Cont.)
Accessory Description
Micro KlipChip adapters. Use the adapters to probe the leads
on integrated circuits that are surface-mounted.
Tektronix part number: SMK4 (package of 4)
Calibration software and instructions.
Use the Optional Applications Software CD that is shipped with
host instruments featuring the TekConnect interface. Alternatively,
you can download the software from the Tektronix website, or
order the CD using the part number below.
Tektronix part number: 063-3376-XX