Tektronix P5205 User Manual
Instruction Manual
P5205
High Voltage Differential Probe
070-9472-03
www.tektronix.com
Copyright © Tektronix. All rights reserved. Licensed software products are
owned by Tektronix or its subsidiaries or suppliers, and are protected by
national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and
pending. Information in this publication superc edes that in al l previously
published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Dri ve
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and techni cal support:
H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.
Warranty 15
Tektronix warrants that the product will be free from defects in materials and workmanship
for a period of one (1) year from the date of original purchase from an authorized
Tektronix distributor. If the 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. Batteries are
excluded from this warranty. 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, shipping charges prepaid,
and with a copy of customer proof of purchase. 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 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.
Table of Contents
General Safety Summary v............................
Service Safety Summary vii.............................
Environmental Considerations viii........................
Getting Started 1.....................................
Features and Accessories 1..............................
Installation 6.........................................
Functional Check 7....................................
Operating Basics 9...................................
Operating the Probe Safely 9............................
Minimizing Risk of RF Burn (probe leads) 10.............
Maximum Input Limits 10............................
Operating Characteristics and Probing Techniques 11.........
Operating Limits 11.................................
Overrange Detection 12..............................
Common-Mode Rejection 12..........................
Twisting the Input Leads 12...........................
Extension Leads 13..................................
Probe Loading 14...................................
Specifications 15......................................
Warranted Characteristics 16.............................
Typical Characteristics 18...............................
Nominal Characteristics 20..............................
Maintenance 21.......................................
Cleaning 21...........................................
Servicing the Compensation Box 21.......................
Replacing the Compensation Box Covers 24..............
Packaging For Return Shipment 25........................
Performance Verification 27............................
Construction of Modifi ed BNC Adapter 28..................
Setup 29.............................................
Differential Gain Accuracy 30............................
Bandwidth 32.........................................
DC CMRR 33.........................................
P5205 Instruction Manual
i
Table of Contents
Replaceable Parts 35...................................
Parts Ordering Information 35............................
Using the Replaceable Parts List 35........................
Abbreviations 36....................................
Mfr. Code to Manufacturer Cross Index 36...............
ii
P5205 Instruction Manual
List of Figures
Figure 1: High Voltage Differential Probe 2..............
Figure 2: Safety limits (voltage between either
input and earth ground) 11..........................
Figure 3: Twisting the input leads 13.....................
Figure 4: HF transient response with and
without extension leads 14...........................
Figure 5: Typical common-mode reje ction ratio
(50X attenuation) 19................................
Figure 6: Input Impedance verses frequency 20............
Figure 7: Replacing TEKPROBE interface pins 22.........
Figure 8: Replacing the TEKPROBE collar 23.............
Figure 9: Removing the compensation box covers 24........
Figure 10: Replacing the compensation box cover 25........
Figure 11: BNC-male-to-dual binding post adapter 28.......
Figure 12: Removing plastic covers from binding posts 29...
Figure 13: Slide probe leads onto the binding posts 31.......
Figure 14: P5205 Probe and replaceable acce ssories 37......
Figure 15: Replaceable parts -- compensation box 39........
Figure 16: P5205 optional accessories 40..................
Table of Contents
P5205 Instruction Manual
iii
Table of Contents
List of Tables
Table 1: Functional check 7...........................
Table 2: Warranted electrical characteristics 16...........
Table 3: Certifications and compliances 17................
Table 4: Typical electrical characteristics 18..............
Table 5: Typical mechanical characteristics 19............
Table 6: Nominal electrical characteristics 20.............
Table 7: List of equipment required 27...................
Table 8: Parts List Column Descriptions 36...............
iv
P5205 Instruction Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. To avoid
potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
Observe Maximum Working Voltage
Do not use the P5205 above 1,000 V
either input or
To Avoid Fire or Personal Injury
Avoid RF Burns While Handling Probe. To avoid RF burns, do not handle
the probe while the input leads are connected to circuits above the
voltage and frequency limits specified in Figure 2 on page 11. Use
only probe accessories that are rated for the application.
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 measurement instrument.
Ground the Product. This product is indirect ly grounded through the
grounding conductor of the mainframe power cord. To avoid electric
shock, the grounding conductor must be connected to earth ground.
Before making connections to the input or output terminals of the
product, ensure that the product is properly grounde d.
± 1,300 V (DC + peak AC) between the leads.
CAT II from ground on
RMS
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.
Do Not Operate Without Covers. Do not operate this product with
covers or panels removed.
Avoid Exposed Circuitry. Do not touch exposed connections and
components when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage
to this product, have it inspected by qualified service personnel.
P5205 Instruction Manual
v
General Safety Summary
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
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 t erms 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 appea r on the product:
CAUTION
Refer to Manual
WARNING
High Voltage
Double
Insulated
vi
Protective Ground
(Earth) Terminal
P5205 Instruction Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read
this Service Safety Summary and the General Safety Summary before
performing any service procedures.
Do Not Service Alone. Do not perform internal service or adjustments
of this product unless another person capable of rendering first aid
and resuscitation is present.
Use Care When Servicing with Power On. Dangerous voltages or currents
may exist in this product. Disconnect power, remove battery (if
applicable), and disconnect test leads before removing protective
panels, soldering, or replacing components.
To avoid electric shock, do not touch exposed connections.
P5205 Instruction Manual
vii
Service Safety Summary
Environmental Considerations
This section provides information about the environment al impact of
the product.
Product End-of-Life Handling
Observe the following guidelines when recycling an instrument or
component:
Equipment Recycling. Production of t his 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. In order 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.
The symbol shown to the left indicates that this
product complies with the European Union’s
requirements acc ording to Directive 2002/96/EC
on waste electrical and electronic equipment
(WEEE). For information about re cycling
options, check the Support/Service section of the
Tektronix Web site (www.tektronix.com).
viii
Restriction of Hazardous Substances
This product has been classified as Monitoring and Control
equipment, and is outside the scope of the 2002/95/EC RoHS
Directive. This product is known to contain lead, cadmium, mercury,
and hexavalent chromium.
P5205 Instruction Manual
Getting Started
This section describes the High Voltage Differential Probe and gives
instructions on how to install and functionally test the probe.
Features and Accessories
The P5205 probe shown in Figure 1 provides a safe means of
measuring circuits with floating high voltages. The probe outputs a
low-voltage, ground-referenced signal for display on instruments
with the TEKPROBE interface (or any oscilloscope or other
measurement instrument when used with the Tektronix 1103
TEKPROBE power supply).
To protect you from RF and high voltage, the case of the probe is
nonconductive, internally shielded, and isolated. The internal shield
connects to earth ground through the output lead. The case of the
probe and control buttons are isolated and double insulated. This
protection extends up to the full input rating of the probe.
The accessories supplied with the probe meet the same safety
standards as the probe. You may use other accessories if they are
approved for the maximum voltage present in your application and
have the same style and size connectors.
The P5205 probe allows clear and accurate measurements of
high-speed transitions and provides excellent rej ection of commonmode signals. Both inputs have high impedance and low capacitance.
Because of these features, the probe can safely measure the fast
voltage transients in switching power devices without damaging
them.
Other applications for the P5205 probe include testing high-voltage
motor control circuits and line-connected circuits in switch-mode
power supplies.
For a complete list of replaceable accessories and part ordering
information, see the Replaceable Parts section, starting on page 35.
P5205 Instruction Manual
1
Getting Started
ON
Figure 1: High Voltage Differential Probe
2
P5205 Instruction Manual
Getting Started
The P5205 has several features and accessories that make probing
and measurement a simpler task. Take a moment to familiarize
yourself with these items and their uses.
Differential Inputs. The inputs are rate d to safely accept
a maximum of 1,000 V
CAT II between either
RMS
input and earth ground and a maximum differe nce of
1,300 V (DC + peak AC) between the inputs.
NOTE. The input safety ratings are valid for both
attenuation range settings. However, for useful
measurements, the input should be kept to the
operating limits of the selected attenuation range of
130 V up to 1,300 V (DC + peak AC).
Attenuation Range. In the raised position the range
button sets the attenuation to 500X. In the lowered
position the range button sets the attenuation to 50X.
Use the 500X position for measurements up to a
maximum of 1,300 V (DC + peak AC) differential. Use
the 50X position for better signal resolution on
connections below 130 V (DC + pea k AC).
Overrange Indicator. T he ove rrange indicator lights red
if the voltage of the input signal exceeds the linear
operating range of the probe. When this happens, the
signal on the probe output does not accurately represent
the signal on the probe input.
Audible Overrange. In the raised position the overrange
button sets the audible alarm to sound whenever the
overrange indicator lights.
Bandwidth Select. In the raised position the bandwidth
button sets the full bandwidth (100 MHz minimum). In
the lowered position the bandwidth is restricted to
approximately 5 MHz.
P5205 Instruction Manual
3
Getting Started
Input Leads. The input leads of the differential probe
connect to the crocodile clips and plunger clamps that
come with the probe. The connectors are 4 mm
insulated banana plugs and are double insulated for
safety.
NOTE. Use only accessories that are rated to the
maximum input voltage of the P5205 probe.
Extension Leads and Adapters. To measure the potential
between widely separated points, connect the extension
leads to the input leads with the supplied adapters. Use
both extension leads to minimize distortion caused by
mismatched lead length.
NOTE. Above 10 MHz, the extension leads degrade the
high frequency performance of the P5205 probe. See
Figure 4 on page 14.
Plunger Clamps. The plunger clamps have long sleeves
with retracting hooks. These clamps connect safely to
recessed test points that are otherwise difficult to reach.
The connectors are double insulated for safety.
Crocodile Clips. The large insulated clips connect easily
to large bolts or bus bars. The connectors are double
insulated for safety.
TEKPROBE Interface. The TEKPROBE interface
provides power, signal, and probe characteristic data
transfer.
If your oscilloscope does not support the TEKPROBE
interface, you can use the optional 1103 probe power
supply as an effective interface. Contact your local
Tektronix representative for more information.
4
P5205 Instruction Manual
Getting Started
Zero Adjust. The zero adjust allows you to set the probe
output to the zero reference point prior to making
measurements. Use the adjustment tool provide d.
Soft Case. The soft case protects the probe and all ows
you to hang the probe near the point of m easurement.
Install or remove the case by opening the access doors
on the back.
When not in use, coil the leads and secure them with
the strap on the back. Use one of the loops to hang the
probe on a storage hook or utility belt.
Color Marker Bands. When you are using more than one
probe, the bands enable you to quickly distinguish
between probes and the channels they are connected to.
To use the marker bands, att ach one band near the
probe head and the matching band near the compensation box.
P5205 Instruction Manual
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