Instruction Manual P5205 High Voltage Differential Probe 070-9472-02 www.tektronix.
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, and TEKPROBE are registered trademarks of Tektronix, Inc. TekProbe is a registered 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 purchase from an authorized Tektronix distributor. 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. Batteries are excluded from this warranty.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii viii Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents ii Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC CMRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 33 Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . Abbreviations . . . . . . . . . . . . . . . . .
Table of Contents List of Figures Figure 1: P5205 High-Voltage Differential Probe . . . . . . . . . . . Figure 2: Safety limits (voltage between either input and earth ground) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3: Twisting the input leads . . . . . . . . . . . . . . . . . . . . . . . Figure 4: HF transient response with and without extension leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents List of Tables Table 1: Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 2: Warranted Electrical Characteristics . . . . . . . . . . . . . Table 3: Certifications and Compliances . . . . . . . . . . . . . . . . . Table 4: Typical Electrical Characteristics . . . . . . . . . . . . . . . . Table 5: Typical Mechanical Characteristics . . . . . . . . . . . . . . Table 6: Nominal Electrical Characteristics . . . . . . . . . . . . . .
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 VRMS CAT II from ground on either input or ± 1,300 V (DC + peak AC) between the leads. To Avoid Fire or Personal Injury Avoid RF Burns While Handling Probe.
General Safety Summary 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. 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.
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.
Service Safety Summary Contacting Tektronix Phone 1-800-833-9200* Address Tektronix, Inc. 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: techsupport@tektronix.com 1-800-833-9200, select option 3* 1-503-627-2400 6:00 a.m. - 5:00 p.m. Pacific time * viii This phone number is toll free in North America.
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).
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 rated to safely accept a maximum of 1,000 VRMS CAT II between either input and earth ground and a maximum difference of 1,300 V (DC + peak AC) between the inputs. NOTE. The input safety ratings are valid for both attenuation range settings.
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.
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 provided. Soft Case. The soft case protects the probe and allows you to hang the probe near the point of measurement. 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.
Getting Started Installation Install the P5205 probe as follows: 1. Connect the output of the probe to the TEKPROBE input of the oscilloscope or other measurement instrument. The measurement instrument input must have a ground reference. NOTE. Use the 1103 TEKPROBE Power supply if the instrument does not have the TEKPROBE interface. 2. Select the proper range setting. For higher resolution and less noise when measuring signals below 130 V, switch the attenuation to 50X.
Getting Started Functional Check To make a simple functional check of the P5205 probe, select a source that supplies AC line voltage and use the following procedure. This procedure verifies a majority of the circuitry within the probe. For a complete performance verification, refer to the Performance Verification section starting on page 27. 1. Use the installation procedure starting on page 6 to connect the output of the P5205 probe to a measurement instrument. 2.
Getting Started 8 P5205 Instruction Manual
Operating Basics To help you use the High Voltage Differential Probe safely and effectively, this section provides important information about safety limits, operating characteristics, and probing techniques. WARNING. Due to the inherent hazards associated with taking high-voltage measurements, the product is intended for use by qualified personnel who have had the training to make these types of measurements. Read and follow the precautions specified in this manual.
Operating Basics Minimizing Risk of RF Burn (probe leads) WARNING. To avoid personal injury, do not handle the probe leads when the leads are connected to a source that is above the voltage and frequency limits given in Figure 2 on page 11. The area above these limits poses a risk of radio frequency (RF) burns. If you need to use the probe within the risk area for RF burn, power down the source before connecting or disconnecting the probe leads. Maximum Input Limits CAUTION.
Operating Basics Category II maximum voltage limit (1,000 V) RF burn risk area (shaded) Voltage derating with frequency 1000 V 500 V Voltage (RMS) 100 V 50 V DC or 0 100 k 500 k 1 M 5 M 10 M Frequency (Hz) 50 M 100 M Figure 2: Safety Limits (voltage between either input and earth ground) Operating Characteristics and Probing Techniques This section explains the operating characteristics of the High Voltage Differential Probe along with techniques you can use to maximize the performance of the prob
Operating Basics Both ranges are rated for the maximum input limits, but you can obtain a useful measurement only if the voltage you apply is within the specified limits of the operating range. Overrange Detection Differential voltage outside the operating range will overdrive the circuitry of the probe and distort the output signal. When this differential overrange occurs, the probe detects the condition and lights the overrange indicator.
Operating Basics Figure 3: Twisting the input leads Extension Leads The extension leads allow you to reach widely spaced connection points. Connect the extension leads to the input leads using the adapters provided. Be sure to use both extension leads so that the input leads are the same length. The extension leads, however, do affect the high-frequency performance of the probe. With longer lead length, differential noise induced into the input leads is greater.
Operating Basics Without extension leads 250 mv/div 250 mv/div With extension leads 50 ns/div 50 ns/div Figure 4: HF Transient response with and without extension leads Probe Loading When you touch your probe tip to a circuit element, you are introducing a new resistance, capacitance, and inductance into the circuit. Frequency and impedance of the source determine how much the probe loads the circuit you are measuring.
Specifications The specifications in Tables 2 through 6 apply to a P5205 probe installed on a Tektronix TDS 460A oscilloscope. When the probe is used with another oscilloscope, the oscilloscope must follow these specifications: H An input impedance of 1 MΩ H An input capacitance range of between 15 and 20 pF H A bandwidth greater than 400 MHz The probe must have a warm-up period of at least 20 minutes and be in an environment that does not exceed the limits described in Table 2.
Specifications Table 2: Warranted Electrical Characteristics (Cont.) Maximum Operating Input Voltage 500X differential: ± 1.3 kV (DC + peak AC) 500X common mode: ± 1 kV RMS CAT II 50X differential: ± 130 V (DC + peak AC) 50X common mode: ± 1 kVRMS CAT II Maximum Nondestructive Input Voltage 500X and 50X differential: ± 1.5 kV (DC + peak AC) 500X and 50X common mode: ± 1.
Specifications Table 3: Certifications and Compliances (Cont.) Installation Category Descriptions Pollution Degree 2 Terminals on this product may have different installation category designations. The installation categories are: CAT III Distribution-level mains (usually permanently connected). Equipment at this level is typically in a fixed industrial location CAT II Local-level mains (wall sockets). Equipment at this level includes appliances, portable tools, and similar products.
Specifications Table 4: Typical Electrical Characteristics (Cont.) Overdrive Recovery < 50 ns to 10% of final value after 10X overdrive (50X range only) Zero Adjust 50X: ± 0.5 V 500X: ± 5 V 40 dB 50 dB 60 dB 70 dB 80 dB 90 dB 1 Hz 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz Frequency Figure 5: Typical Common-Mode Rejection Ratio (50X Attenuation) Table 5: Typical Mechanical Characteristics Dimensions, Case 7.2 in × 2.6 in × 1.
Specifications Table 5: Typical Mechanical Characteristics (Cont.) Unit Weight (probe only) 11 oz (315 g) Shipping Weight (with accessories) 3 lb, 2 oz (1.42 kg) 10 M Impedance (Z) 1M 100 k 10 k 1k 100 1 10 100 1k 10 k 100 k 1M 10 M 100 M Frequency (Hz) Figure 6: Input Impedance vs. Frequency Nominal Characteristics Nominal characteristics in Table 6 on page 19 describe guaranteed traits, but the traits do not have tolerance limits.
Specifications Table 6: Nominal Electrical Characteristics (Cont.) Gain Switchable: 1/50 (“50X”) and 1/500 (“500X”) Audible Overrange Audible over range sounds whenever ON, and over range LED is lit.
Maintenance Refer to this section for information about maintaining and servicing the High Voltage Differential Probe. For terms of the product warranty, refer to the front of this manual. Should the probe require replacement under terms of the warranty, return the probe to a Tektronix service center. Refer to page 25 for packaging instructions. For a list of replaceable parts, refer to the Replaceable Parts section on page 35. For further assistance, refer to Contacting Tektronix on page viii.
Maintenance To remove a TEKPROBE interface pin, firmly grasp the pointed tip with pliers and pull the pin out of the connector. See Figure 7. No tools are required to install a replacement pin. Insert a new pin into the connector socket as far as possible using finger pressure. If necessary, seat the pin into the connector by pressing the tip of the pin gently but firmly against a hard surface.
Maintenance Removing and Replacing the TEKPROBE Interface Collar To remove the TEKPROBE interface collar, firmly grasp the compensation box body with one hand, and the TEKPROBE interface collar with the other hand. Firmly pull the interface collar off. To replace the collar, note the pin configuration on the compensation box and their holes in the interface collar. The group of three pins fit through the smaller of the two holes in the interface collar. See Figure 8.
Maintenance Removing the Compensation Box Covers To open the compensation box, follow these steps: 1. Press the optional release tool pins into the compensation box cover catches and gently lift the cover off a small distance. Refer to Figure 9, below. 2. Hold the open edge apart, and use the tool to open the other side of the compensation box. 3. With both sides of the box open, gently separate the two halves of the compensation box.
Maintenance Tab Figure 10: Replacing the compensation box cover Packaging For Return Shipment If possible, use the original packaging to return the probe to Tektronix. Include the following information: name of purchaser, return address, name and phone number of a person that Tektronix may contact, date of purchase, and a description of the defect. If the original packaging is unfit for use or not available, use the following packaging guidelines: 1.
Maintenance 26 P5205 Instruction Manual
WARNING The following servicing instructions are for use only by qualified personnel. To avoid injury, do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all safety summaries before performing any service.
Performance Verification The following procedure verifies the warranted electrical characteristics of the High Voltage Differential Probe. Table 7 itemizes the equipment required, provides an example or part number of the equipment, and explains the purpose of the equipment. Table 7: List of equipment required Minimum requirements Example or part number Bandwidth: ≥ 400 MHz TEKPROBE interface vertical accuracy: ≤ 1.
Performance Verification Construction of Modified BNC Adapter Construct the modified BNC Adapter from a BNC-male-to-dual binding post adapter, Tektronix part number 103 -0035-00 (see Figure 11). Black and red plastic post covers Figure 11: BNC-male-to-dual binding post adapter To expose the posts that you will connect the P5205 High-- Voltage Differential probe leads to, remove the black and red plastic post covers of the BNC-male -to-dual adapter.
Performance Verification Pliers Plastic cover removed Modified BNC adapter Vise Figure 12: Removing plastic covers from binding posts Setup WARNING. These procedures require the application of high voltage to the inputs of the P5205 probe. Because this adapter has exposed metal surface, only qualified personnel should perform testing with voltage levels that exceed 30 V rms. All pertinent safety rules and guidelines for elevated voltage measurements should be followed and adhered to.
Performance Verification NOTE. These procedures assume that you are using an oscilloscope that automatically displays the correct volts/division scale factor for the attenuation setting of the probe. If not, you must take the attenuation setting of the probe into account when setting the volts/division on the oscilloscope. Differential Gain Accuracy 1. Set the volts/division on channel 2 of the oscilloscope to 2 V. H Trigger on channel 2. H Select 1 MΩ impedance (if option exists on oscilloscope).
Performance Verification 10. Attach the differential probe input leads (without attachment accessories) by sliding the banana plug of the leads onto the binding posts metal sleeves on the Modified BNC adapter (see Figure 13). Modified BNC adapter (+) Post (-- ) Post Banana plug of probe input lead Figure 13: Slide probe leads onto the binding posts WARNING.
Performance Verification 15. Set the calibration generator for 10 V output. Set the attenuation button on the probe to 50X (in). 16. Record the DC amplitude of the square wave (∼10V) and divide 1/100th of this into only the amplitude of the oscilloscope (refer to step 6). Verify that only the probe gain accuracy is ᐔ3%. 17. Reduce the amplitude on the generator to minimum then disable the generator output, leaving the setup connected for the next procedure. Bandwidth 1.
Performance Verification 7. Set the generator to 100 MHz, and set the oscilloscope to 5 ns/division. Check for ≥ 2.1 V amplitude. 8. Disconnect the setup. DC CMRR 1. Set the attenuation of the probe to 50X. 2. Set the oscilloscope input coupling to DC, the vertical to 50 mV/div, and the seconds/div to 200 s. Center the trace on the display. Set the acquisition mode to average 32. 3. Attach the BNC-female-to-dual-banana adapter to the DC output of the generator (front of Wavetek 9100).
Performance Verification WARNING. To reduce the risk of electric shock, ensure the generator output is disabled before modifying/disconnecting test setup or connections since exposed metal may at a hazardous potential. It is recommended that the generator output amplitude be reduced to minimum prior to disabling the output. 11. Disconnect all test equipment. This completes the performance verification procedure.
Replaceable Parts This section contains a list of the replaceable modules for the P5205 probe. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements.
Replaceable Parts Table 8: Parts List Column Descriptions Column Column Name Description 1 Figure & Index Number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 2 Tektronix Part Number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial Number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.
Replaceable Parts 1 2 3 4 6 5 Figure 14: P5205 Probe and replaceable accessories P5205 Instruction Manual 37
38 1 1 003-- 1433-- 00 016-- 0633-- 00 020-- 2106-- 00 020-- 2140-- 00 070-- 9472-- XX -3 -4 -5 -6 1 1 1 1 Qty 016-- 1461-- 00 Serial No. Discont’d -2 Serial No. Effective 1 Tektronix Part Number 14-- 1 Fig.
P5205 Instruction Manual 2 4 5 Tektronix Part Number 205-- 0191-- 00 131-- 3627-- 01 206-- 0429-- 08 334-- 9117-- 00 206-- 0430-- 00 Fig. & Index Number 15-- 1 -2 -3 -4 -5 Serial No. Effective Serial No. Discont’d Replaceable Parts - Compensation Box 1 1 1 1 1 Qty COMP BOX:COVER,BOTTOM HALF MARKER, IDENT:COMP BOX ID LABEL,P5205 COMP BOX HALF:TOP HALF COMP BOX,W/MACHINED HOLE,PLASTIC,P5205 CONTACT,ELEC:GOLD PLATED TIP 80009 80009 80009 18359 80009 Mfr.
40 1 1 1103 Qty 003-- 1383-- 00 Serial No. Discont’d 16-- 1 Serial No. Effective Tektronix Part Number Fig. & Index Number Optional Accessories Figure 16: P5205 optional accessories 1 TEKPROBE IF PS:W/OFFSET 2 CONN RLSE TOOL,COVER:COMP BOX,POLYCARBONATE Name & Description 80009 TK2565 Mfr. Code 1103 003-- 1383-- 00 Mfr.
Manufacturer PYLON CO. INC. MUELLER ELECTRIC CO TEKTRONIX INC VISION PLASTICS INC Mfr.
Replaceable Parts 42 P5205 Instruction Manual
