Instruction Manual
P6021
60 MHz Current Probe
070-0947-06
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 and TEK are registered tradem arks of Tektronix, Inc.
POSIDRIV is a registered trademark of the Philips Screw Co.
WARRANTY
Tektronix warrants that the products that it m anufactures 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.
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 modi fication or i ntegration increases the time
or difficulty of servicing the product.
THIS W ARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE LISTED PRODUCTS IN
LIEU OF ANY OTHER W ARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS
DISCLAIM ANY IMPLIED W ARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PAR TICULAR 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 iii...................................
Service Safety Summary v....................................
Contacting Tektronix vi.............................................
Operator Information 1......................................
Description 1.....................................................
Installation 1.....................................................
Operating Considerations 4..........................................
Service Information 7........................................
Warranted Characteristics 7..........................................
Typical Characteristics 9............................................
Circuit Description 12...............................................
Probe Performance 13...............................................
Performance Verification 15..........................................
P6021 Test Record 20...............................................
Adjustment Procedure 21............................................
Maintenance 24....................................................
Replaceable Electrical Parts 29.................................
Parts Ordering Information 29.........................................
Using the Replaceable Electrical Parts List 29............................
Replaceable Mechanical Parts 35...............................
Parts Ordering Information 35.........................................
Using the Replaceable Mechanical Parts List 35..........................
Index 41....................................................
P6021 Instruction Manual
i
Table of Contents
List of Figures
Figure 1: The P6021 Probe and termination 2....................
Figure 2: Insertion Impedance of the P6021 5....................
Figure 3: Probe and termination input current vs.
frequency derating 8.....................................
Figure 4: Typical P6021 phase response 11.......................
Figure 5: Midband accuracy test setup 15........................
Figure 6: High frequency bandwidth test setup 18.................
Figure 7: Connecting the probe to the calibration fixture 22.........
Figure 8: Location of probe adjustments 23......................
Figure 9: Location of termination adjustments 23.................
Figure 10: Disassembling the probe 25...........................
Figure 11: P6021 probe component location 33....................
Figure 12: P6021 termination component location 33...............
Figure 13: P6021 exploded view 39..............................
List of Tables
T able 1: Warranted electrical characteristics 7...................
T able 2: Warranted environmental characteristics 7..............
Table 3: Maximum ratings 8..................................
Table 4: Certifications and compliances 9.......................
T able 5: Electrical characteristics 9............................
T able 6: Mechanical characteristics 10..........................
Table 7: Equipment list 14....................................
Table 8: Low frequency bandwidth measurements 17..............
Table 9: High frequency bandwidth measurements 19.............
ii
P6021 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.
ToAvoidFireor
Personal Injury
Connect and Disconnect Properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
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.
Connect the ground lead of the probe to earth ground only.
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.
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.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
P6021 Instruction Manual
iii
General Safety Summary
Symbols and Terms
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. The following symbols may appear on the product:
CAUTION
Refer to Manual
Double
Insulated
Protective Ground
(Earth) Terminal
iv
P6021 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.
To avoid electric shock, do not touch exposed connections.
P6021 Instruction Manual
v
Service Safety Summary
Contacting Tektronix
Phone 1-800-833-9200*
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: techsupport@tektronix.com
1-800-833-9200, select option 3*
1-503-627-2400
6:00 a.m. -- 5:00 p.m. Pacific time
* This phone number is toll free in North America. After office hours, pl ease 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.
vi
P6021 Instruction Manual
Operator Information
Thank you for choosing a Tektronix current probe. This manual describes the
P6021 current probe with passive termination and provides information about
making measurements with the probe.
Description
The P6021 current probe converts an alternating current waveform to a voltage
that can be displayed and measured on an oscilloscope display. The probe
provides accurate current measurements over a wide range of frequencies and
allows you to measure current without breaking the circuit.
The P6021 probe is compatible with general purpose oscilloscopes having a
1MΩ input impedance. The P6021 probe comes with a passive termination that
matches oscilloscope and probe impedance, optimizes the probe performance,
and provides two sensitivity settings.
The P6021 probe comes with a 5-foot cable and termination.
Installation
This section describes both attaching the probe to an oscilloscope and using the
standard accessories with the probe.
To ensure the best performance from your probe and oscilloscope measurement
system, check that the probe and oscilloscope are appropriately matched. The
oscilloscope inputs should use BNC connectors and have an impedance of
1MΩ.
Figure 1 shows the probe and various parts referred to in this manual.
P6021 Instruction Manual
1
Operator Information
P6021 Probe
Termination
6” Ground Lead
Figure 1: The P6021 Probe and termination
Attaching the Probe and
Termination to an
Oscilloscope
Attach the probe to the termination as shown in Figure 1.
An alligator-style ground clip is supplied to improve EMI rejection at high
frequencies (2 MHz and above). Snap the ground lead to the probe transformer
post and attach the alligator clip directly to RF ground. This will reduce ringing
and help bypass capacitively-coupled RF currents that can flow into the probe
cable.
WARNING. To avoid injury or equipment damage, remove power from an
uninsulated wire before clamping the current probe around it. When the probe
slides are open, the exposed ferrite core pieces are not insulated. Also, never
disconnect the probe from the termination when the probe is connected to a live
conductor.
To avoid damaging the probe, do not disconnect the probe termination and leave
the P6021 clamped around the conductor when measuring high currents.
Leaving the probe cable unterminated can cause a high voltage to develop in the
secondary winding, which may damage the current probe transformer.
2
P6021 Instruction Manual
Operator Information
Using the Standard
Accessories
Optional Accessories
Your P6021 is shipped with the following accessories:
H This instruction manual — Read these instructions to familiarize yourself
with the features, specifications, and operation of the P6021 current probe.
H 6-inch ground lead — Use the 6-inch ground lead to ground the shield
around the probe transformer at the probe end of the cable. This allows you
to move the ground connection closer to the circuit that you are measuring,
thereby improving high frequency response. The ground lead clips onto the
ground connector on the bottom of the probe as shown.
Please refer to the parts list in the section entitled Replaceable Mechanical Parts
for part numbers.
Your P6021 may be used with the following optional accessory:
H CT-4 Current Probe — The CT-4 is a robust clip-on transformer that
extends the current range of the P6021 up to 1000 amps (provided the
amp-second rating is not exceeded). The CT-4 has receptacles for current
probes in either 20:1 or 1000:1 step-down ratios.
P6021 Instruction Manual
3
Operator Information
Operating Considerations
The information in this section will help you make effective use of your P6021
probe.
Features and Controls
Open
Closed
Locked
Ridge
Sensitivity
control
Probe
slide switch
H Sensitivity Control — The P6021 termination has a control that allows you
to select probe sensitivity. The switch has two positions: 2 mA/mV and
10 mA/mV. When the control is in the 2 mA/mV position, the oscilloscope
displays 1 mV for every 2 mA of current in the circuit under test. When the
control is in the 10 mA/mV position, the oscilloscope displays 1 mV for
every 10 mA of current in the circuit under test.
You can set vertical scale on the oscilloscope to any scale factor, as
determined by the signal amplitude. To calculate the overall vertical scale
factor for the oscilloscope, probe, and termination, multiply the termination
sensitivity control setting by the vertical scale factor of the oscilloscope. For
example, if the termination control is set to the 10 mA/mV position and the
oscilloscope to a vertical scale of 20 mV/division, the overall scale factor is
10 X 20, or 200 mA/division.
H ProbeSlideSwitch— The slide switch on the probe has three positions:
open, closed, and locked. Use your thumb to move the probe slide switch.
The switch is spring loaded so that it automatically moves from the open to
closed positions.
To Use the Prob e :
a. Pull the slide switch toward you, and hold the switch in position.
b. Place the conductor-under-test inside the exposed transformer core. The
arrow on the transformer end of the probe indicates conventional current
flow. If you place the probe on the conductor so that the arrow on the
probe matches conventional current flow through the conductor,
orientation of the displayed waveform will be correct.
c. Release the switch, allowing the probe to close.
d. Lock the slide switch. To lock the switch, push it firmly toward the
transformer (the switch will move only about 1/8th inch). Locking the
switch assures maximum contact between the two halves of the
transformer secondary. The conductor now becomes the primary of the
transformer. (When measuring current, always check that the probe slide
switch is moved completely forward into the locked position.)
WARNING. To prevent shock when measuring uninsulated conductors, keep your
hands and fingers behind the ridge on the probe head.
4
P6021 Instruction Manual
Operator Information
Insertion Impedance
Minimizing Loading Effect
Increasing Probe
Sensitivity
When you insert a conductor into the probe, you add impedance to the circuit
you are measuring. This additional impedance affects signals; this is particularly
important if you are measuring fast rise times. Figure 2 illustrates the equivalent
circuit with the additional impedance introduced by the P6021.
1.7 nH2.8 H
.004 Ω
Figure 2: Insertion Impedance of the P6021
To minimize the loading effect of the probe, clamp it at the low or ground end of
a component lead when possible. This method also minimizes noise or stray
signal interference.
You can increase the current sensitivity of the probe by increasing the number of
times a conductor passes through it. For example, if the conductor loops through
the probe twice (a two-turn primary winding), the secondary current is doubled.
For example, suppose you set the termination sensitivity to 2 mA/mV and the
oscilloscope vertical scale to 10 mV/division. Ordinarily, this would result in the
equivalent of 2 X 10, or 20 mA/division. However, if the conductor is looped
through the probe twice, the vertical scale is divided by two, resulting in the
equivalent of 10 mA/division.
Looping the conductor twice effectively doubles vertical sensitivity; however,
impedance from the probe winding is also reflected into the circuit being
measured. This impedance is proportional to the square of the number of loops.
This additional impedance affects signals; this impedance is particularly
important when you are measuring high-frequency current waveforms or
waveforms with fast rise times.
P6021 Instruction Manual
5
Operator Information
Probe Shielding
The P6021 is shielded to minimize the effect of external magnetic fields.
However, strong fields can interfere with the current signal being measured. If
you suspect that an external field is interfering with your measurement, remove
the probe from the conductor, but keep it in the same location as when you made
the suspect measurement. If a signal still appears on the oscilloscope, try to
measure the conductor current at a point farther from the location of the magnetic
field.
If you must measure current in the presence of a strong magnetic field, you can
minimize its interference by using two current probes and a differential-input
oscilloscope. To do so, follow these steps.
1. Connect the probes (with termination) to the positive and negative inputs of
the oscilloscope.
2. Clamp one probe around the conductor whose current you want to measure.
3. Place the other probe as close as possible to the first. Ensure that its slide
switch is completely closed, without a conductor inside it.
4. Set the oscilloscope to subtract the component of the signal that is common
to both probes.
5. Adjust the positions of the probes for best results. It may be difficult to
eliminate the undesirable signal completely, due to differences between the
probes or their terminations.
Droop
The flat-top response of any AC current probe displays a certain amount of
droop. This is caused by probe inductance loading the source impedance, causing
an L/R exponential decay. For short pulse widths, the response looks nearly flat.
The amount of droop can be calculated from the following relationship:
% Droop = 200 (π)Tf
where:
T=pulse duration in microseconds
f=lower 3 dB frequency of probe in Hertz
For example, to calculate the percent droop of a 100 s pulse measured with a
P6021 probe:
In the 10 mA/mV position, f=120 Hz
% Droop = 200 (π)Tf
= 200 (π) (100*10
--6
) (120)
= 0.075%
6
P6021 Instruction Manual
Service Information
Warranted Characteristics
This section lists the various warranted characteristics that describe the P6021
Current Probe. Included are warranted electrical and environmental characteristics.
Warranted characteristics are described in terms of quantifiable performance
limits which are warranted.
The electrical characteristics listed in Table 1 apply under the following
conditions:
NOTE. The probe and instrument must be in an environment whose limits are
described in Table 2.
Table 1: Warranted electrical characteristics
Characteristic Information
Sensitivity setting 2 mA or 10 mA for each mV at oscilloscope input,
selected by termination sensitivity control
Midband accuracy
System bandwidth (--3 db)
(with BW>200 MHz oscilloscope)
2 mA/mV 450 Hz to 60 MHz
10 mA/mV 120 Hz to 60 MHz
±3%
Table 2: Warranted environmental characteristics
Characteristic Information
Temperature range
Operating --0 _ Cto+50_C(+32_F to +122 _F)
Nonoperating -- 4 0 _ Cto+65_C(--40_F to +149 _F)
Altitude
Operating To 2,000 m (6,561 ft), <300 V CAT I
To 4,572 m (15,000 ft), <150 V, CAT I
Nonoperating To 15,240 m (50,000 ft)
P6021 Instruction Manual
7
Service Information
Table 3: Maximum ratings
Characteristic Information
Maximum continuous (CW) current Refer to Figure 3 for frequency derating curves
100 A
20 A
10 A
AMPS
P-P
2mA/mV 5A
10 mA/mV 15 A
sine wave between 1.2 kHz and 5 MHz
p-p
sine wave between 300 Hz and 5 MHz
p-p
Maximum Pulse Current 250 A peak, not to exceed 500(A · s) or 5 A
(A · s) product greater than 500(A · s) reduces
probe output to zero due to core saturation
Maximum working input voltage
(uninsulated conductors)
300 VAC or VDC, CAT I, and 600 Vpklimited to
<10 ms and <25% duty factor.
10mA/mV
2mA/mV
RMS
.An
1A
0.1A
FREQUENCY
Figure 3: Probe and termination input current vs. frequency derating
8
100 MHz10 MHz1MHz1kHz100 Hz10 Hz
P6021 Instruction Manual
Table 4: Certifications and compliances
EC Declaration of Conformity — Low Voltage
Compliance was demonstrated to the fol lowing specifications as listed in the
Official Journal of the European Communities:
Low Voltage Directive 73/23/EEC, as amended by 93/68/EEC
Service Information
EN 61010-1/A2
EN 61010-2-032:1995 Part 2-032:
Listed UL1244, Third Edition Electrical and electronic measuring and test
Installation category descriptions
Terminals on this product may have different installation category
designations. The installation categories are:
CAT III
CAT II Local-level mains (wall sockets). Equipment at this
CAT I Secondary (signal level) or battery operated circuits
Pollution Degree 2 Do not operate in environments where conductive
Part 1: General Requirements
Safety requirements for elect ric al equipment for
measurement, control, and laboratory test
Particular requirements for hand-held current clamps
for electrical measurements and test
equipment
Distribution-level mains (usually permanently
connected). Equipment at this level is typically in a
fixed industrial location
level includes appliances, portable tools, and similar
products. Equipment is usually cord-connected
of electronic equipment
pollutants may be present.
Typical Characteristics
P6021 Instruction Manual
This section lists the various typical characteristics that describe the P6021
Current Probe. Included are typical electrical and mechanical characteristics.
Typical characteristics are described in terms of typical or average performance.
Typical characteristics are not warranted.
Table 5: Electrical characteristics
Characteristic Information
Tilt
2 mA/mV 2.8% or less within 10 sofstep
10 mA/mV 7.5% or less within 100 sofstep
9
Service Information
Table 5: Electrical characteristics (Cont.)
Characteristic Information
Maximum DC saturation 0.5 A
Signal Delay
5-foot probe with termination Approximately 9 ns
Insertion Impedance 0.03 Ω or less at 1 MHz, increasing to 1.0 Ω or less
at 60 MHz
Probe Rise Time ≤5.8 ns
Step Response Because the oscilloscope input capacitance becomes
a part of the termination network, the step response
will vary with different oscilloscopes
Aberrations (probe and termination
at either sensitivity setting.)
≤10% peak-to-peak within 50 ns of step; ≤2%
peak-to-peak thereafter
Table 6: Mechanical characteristics
Characteristic Information
Probe cable length 5ft 1.5 m
Net weight:
Probe and 5-foot cable 3.60 oz ≈103 gm
Termination 1.7 oz ≈48 gm
Termination L3.47in
W1.10in
H0.86in
Probe body L7.9in
W0.63in
H1.25in
Maximum conductor diameter 0.141 in 3.58 mm
88 mm
28 mm
22 mm
200 mm
16 mm
32 mm
10
P6021 Instruction Manual
100
--- 5 0
Service Information
Frequency
100 MHz10 MHz1MHz100 kHz10 kHz1kHz100 Hz
50
0
Degrees
--- 1 0 0
--- 1 5 0
--- 2 0 0
Termination at 10 mA
Termination at 2 mA
Figure 4: Typical P6021 phase response
P6021 Instruction Manual
11
Service Information
Circuit Description
This section describes the circuits in the P6021 current probe and termination.
Current Probe
Termination
The P6021 current probe consists of a current transformer mounted in the nose of
the probe head case, an impedance-matching network, and an internal switch to
disconnect the transformer shield from ground.
The transformer contains a two-section U-shaped ferrite core. One section is
stationary; the other is mechanically movable to permit closing the core around
the conductor being measured. The conductor under test forms a one-turn
primary winding for the transformer; the windings around the stationary portion
of the core are the secondary windings. The circuitry between the transformer
and the coaxial cable corrects any differences in level between the signal induced
in the parallel windings of the secondary and matches the balanced probe
winding to the cable.
As indicated on the probe body, the turns ratio of the P6021 is 125:1. This refers
to the number of windings in the secondary of the probe transformer.
The probe transformer is shielded to eliminate interference from outside signals.
To eliminate the possibility of creating a short circuit from this shield to the
conductor being measured, the slide switch disconnects the ground from the
shield when you open the sliding portion of the probe to connect or remove it
from a conductor.
The P6021 termination consists of an impedance-matching network to terminate
the coaxial cable and a voltage divider that is switched in by a sensitivity control
to change the sensitivity by a factor of five. When the control is in the 2 mA/mV
position, a 10 mA current signal in the conductor under test induces a 5 mV
signal at the output of the termination. (This assumes that the termination is
connected to a 1 MΩ input oscilloscope.)
12
When the sensitivity control is in the 10 mA/mV position, a 10 mA current
signal is attenuated to induce a 1 mV signal at the output of the termination.
P6021 Instruction Manual
Probe Performance
Service Information
WARNING. To avoid personal injury and damage to the probe, remove the probe
from any signal source before attempting to adjust or service the probe.
This probe should be serviced only by qualified service personnel.
Do not service electrical equipment alone. If you must service or adjust
equipment that is attached to a signal or power source, do so only when another
person capable of rendering first aid and resuscitation is present.
This section provides procedures to check the performance of the P6021 or to
calibrate it. These procedures require the equipment listed in Table 7 on page 14.
Specifications given are the minimum necessary for accuracy. If equipment is
substituted, it must meet or exceed the specifications of the recommended
equipment. Test equipment is assumed to be correctly calibrated and operating
within the given specifications.
Also, if equipment is substituted, control settings or equipment setup may need
to be altered. For detailed operating instructions for the test equipment, refer to
the instruction manual for each unit.
To ensure measurement accuracy, check the performance of the probe and
termination whenever you begin using them with a different oscilloscope input,
especially when you have changed input capacitance. Recalibrate the probe if
necessary.
The recommended calibration interval of the probe and termination is every
twelve months.
Before calibrating the probe, thoroughly inspect and clean it as described in the
section entitled Maintenance on page 24. Dirty or worn mating surfaces between
the transformer and the lid can degrade low-frequency response. Clean these
surfaces if necessary.
Calibration procedures can also be used as performance checks by completing all
steps except those that adjust the probe. This checks the probe and termination to
the original performance standards without requiring you to remove the
termination cover or make internal adjustments.
P6021 Instruction Manual
13
Service Information
y
,
Table 7: Equipment list
Item Description Recommended equipment
1
Oscilloscope TDS 420A, TDS 303X, or TDS 305X
Bandwidth DC to ≥200 MHz
Vertical sensitivity 1mV/div
Measurement functions Amplitude averaging
Calibration generator
Fast Rise Step ≤1ns,
1V
P-P
Sinewave Voltage 5 V
P-P
120 Hz to >60 MHz,
into 50 Ω
into 50 Ω (100 mA),
Wavetek 9100 with option 100:250 or Tektronix PG 506A
Wavetek 9100 with option 100:250, Tektronix SG 5030, or
SG 503
1.5% flatness
Digital Multimeter (DMM) 5 1/2 digits or better Keithley 2000, or HP 3458A
RMS ACV 50 kHz, ≤±0.5%
Adapter BNC “T” Tektronix part number 103-0030-XX
Coaxial cables (2) 36-inch, 50 Ω precision Tektronix part number 012-0482-XX
Adapter BNC-to-dual banana Tektronix part number 103-0090-XX
Calibration fixture Current probe, calibration Tektronix part number 067-0559-XX
1
Or equivalent
14
P6021 Instruction Manual
Performance Verification
Check Midband Accuracy. Refer to Figure 5 when making equipment connections.
banana adapter
Step 7 Step 2, Step 6
BNC-to-dual
Termination for
P6021 probe
DMM
+--
BNC “T”
connection
Service Information
Calibration
generator
Leveled
Sinewave
P6021
probe
Calibration
fixture
Coax cable
Output
Note: If using a Wavetek
9100, use the Signal Out
BNC connector on the
rear of the instrument.
Figure 5: Midband accuracy test setup
1. Set the P6021 termination sensitivity to 2 mA/mV.
2. Connect the Leveled Sinewave Output of the calibration generator to a
BNC “T” connector. Connect one branch of the BNC “T” connector to the
calibration fixture. Connect the other branch of the BNC “T” to the DMM
input using a BNC-to-dual banana adapter.
3. Set the DMM to ACV (autorange).
4. Set the Leveled Sinewave Output of the calibration generator to 50 kHz and
an amplitude of 5 V
pp
.
P6021 Instruction Manual
5. Measure and record the DMM output as M1.
6. Disconnect the coax cable from the BNC-to-dual banana adapter.
15
Service Information
7. Connect the P6021 termination and probe to the BNC-to-dual banana
adapter.
8. Connect the probe to the calibration fixture.
9. Record the DMM output as M2.
10. Calculate the % of error:
Itest =
%Error =
M1
50 Ω
2 × M2 − Itest
Itest
× 100
11. Record the results in the test record and compare the results on page 20
against the midband specification on page 7.
12. Set the P6021 termination sensitivity to 10 mA/mV.
13. Record the DMM output as M3.
14. Calculate the % of error:
%Error =
10 × M3 − Itest
Itest
× 100
15. Record the results in the test record and compare the results on page 20
against the midband specification on page 7.
Check Low Frequency Response. Refer to Figure 5 when making equipment
connections.
1. Connect the calibration fixture to the Leveled Sinewave Output of the
calibration generator.
16
2. Connect the BNC-to-dual banana adapter to the input of the DMM.
3. Connect the P6021 termination and probe to the BNC-to-dual banana adapter
connected to the DMM.
4. Set the DMM to ACV (autorange).
5. Set the P6021 termination sensitivity to 2 mA/mV.
6. Set the Leveled Sinewave Output of the calibration generator to 50 kHz and
an amplitude of 5 V
pp
.
7. Connect the probe to the calibration fixture.
8. Enable the Leveled Sinewave Output of the calibration generator.
P6021 Instruction Manual
Service Information
/
9. Measure and record the DMM output as M1 in Table 8.
10. Set the Leveled Sinewave Output of the calibration generator to 450 Hz.
11. Measure and record the DMM output as M2 in Table 8.
12. Calculate the low frequency bandwidth ratio:
low frequency bandwidth ratio =
M2
M1
13. Record the results in the test record on page 20 and compare the results
against the low frequency specification on page 20.
14. Set the P6021 termination sensitivity to 10 mA/mV.
15. Set the Leveled Sinewave Output of the calibration generator to 50 kHz and
an amplitude of 5 V
pp
.
16. Measure and record the DMM output as M3 in Table 8.
17. Set the Leveled Sinewave Output of the calibration generator to 120 Hz.
18. Measure and record the DMM output as M4 in Table 8.
19. Calculate the low frequency bandwidth ratio:
low frequency bandwidth ratio =
M4
M3
20. Record the results in the test record on page 20 and compare the results
against the low frequency specification on page 20.
NOTE. Dirty or worn mating surfaces between the transformer and the lid
degrade the low-frequency response. Clean them if necessary. See page 24 for
cleaning instructions.
Table 8: Low frequency bandwidth measurements
Leveled Sinewave
Output frequency
Probe
Sensitivity
2mA/mV 50 kHz
10 mA/mV 50 kHz
(Calibration
generator)
450 Hz
120 Hz
M1 M2
M2
M1
M3 M4
P6021 Instruction Manual
M4
M3
17
Service Information
Check High Frequency Bandwidth. Refer to Figure 6 when making equipment
connections.
Test oscilloscope
Calibration
generator
Leveled
Sinewave
Output
Termination
for P6021
probe
CH 1
P6021
probe
Signal Out BNC connector on the rear of
Calibration
fixture
Coax cable
Note: If using a Wavetek 9100, use the
the instrument.
Figure 6: High frequency bandwidth test setup
1. Set the P6021 termination sensitivity to 2 mA/mV.
2. Connect the calibration fixture to the Leveled Sinewave Output of the
calibration generator.
3. Connect the P6021 termination and probe to CH1 of the oscilloscope.
4. Set the oscilloscope Vertical Deflection to 10 mV/div.
5. Set the oscilloscope Horizontal Scale to 10 s/div.
6. Set the oscilloscope Auto Measurement to display “Amplitude”.
7. Set the Leveled Sinewave Output of the calibration generator to 50 kHz and
an amplitude of 5 V
pp
.
8. Connect the P6021 probe to the calibration fixture.
9. Enable the Leveled Sinewave Output of the calibration generator.
10. Measure and record the oscilloscope “amplitude” Auto Measurement as M1
in Table 9.
18
11. Set the oscilloscope Horizontal Scale to 10 ns/div.
12. Set the Leveled Sinewave Output of the calibration generator to 60 MHz.
P6021 Instruction Manual
Service Information
A
/mV
V
/div
A
/mV2mV
/div
13. Measure and record the oscilloscope amplitude Auto Measurement as M2 in
Table 9.
14. Calculate the high frequency bandwidth ratio:
high frequency bandwidth ratio =
M2
M1
15. Record the results in the test record on page 20 and compare the results
against the high frequency specification page 20.
16. Set the P6021 termination sensitivity to 10 mA/mV.
17. Set the oscilloscope Vertical Deflection to 2 mV/div.
18. Set the oscilloscope Horizontal Scale to 10 s/div.
19. Set the Leveled Sinewave Output of the calibration generator to 50 kHz and
an amplitude of 5 V
pp
.
20. Measure and record the oscilloscope amplitude Auto Measurement as M3 in
Table 9.
21. Set the oscilloscope Horizontal Scale to 10 ns/div.
22. Set the Leveled Sinewave Output of the calibration generator to 60 MHz.
23. Measure and record the oscilloscope amplitude Auto Measurement as M4 in
Table 9.
24. Calculate the high frequency bandwidth ratio:
25. Record the results in the test record on page 20 and compare the results
against the high frequency specification page 20.
When you are done, disconnect all test equipment and replace the termination
cover.
Table 9: High frequency bandwidth measurements
Leveled Sinewave Output fre-
quency
Probe
sensitivity
2m
10 m
Vertical
deflection
10 m
Horizontal
scale
10 s/div
10 ns/div 60 MHz
10 s/div
10 ns/div 60 MHz
(calibration gen-
erator)
50 kHz
50 kHz
P6021 Instruction Manual
high frequency bandwidth ratio =
M2
M1
M1 M2
M4
M3
M4
M3
M3 M4
19
Service Information
P6021 Test Record
Photocopy this form and use it to record the performance test results.
P6021 test record
Instrument Serial Number: Certificate Number:
Temperature: Relative Humidity %:
Date of Calibration: Technician:
Range,
Performance test
mA/mV
Minimum Measured/calculated Maximum
Midband Accuracy (% Error)
Low Frequency Response (ratio)
High Frequency Response (ratio)
2 -- 3 % +3%
10 -- 3 % +3%
2 0.707 —
10 0.707 —
2 0.707 —
10 0.707 —
20
P6021 Instruction Manual
Adjustment Procedure
Service Information
If the probe does not pass the performance verification procedure or you want to
optimize the performance of the probe, perform the following adjustment
procedure:
Preparation
1. Insert a small screwdriver between the cover and the termination near the
part number, and gently pry up the top cover of the P6021 termination by
twisting the screwdriver. Leave the bottom cover on, since it must be in
place when the termination is in use.
2. Set up the oscilloscope as described below:
Vertical mode CH 1
Horizontal mode Main
Trigger source CH 1
Trigger coupling AC
Trigger mode Peak-to-peak, auto
Trigger slope Positive
Trigger level As required
Ch 1 coupling DC
Ch 1 resistance 1 MΩ
Volts/division 2 mV
Time/division 10 ns
Averages 5 to 10
NOTE. When using a Wavetek 9100 calibrator with the scopecal option, no other
calibrators are required. The following setups are generic with nominal settings
indicated for the major adjustment steps.
Adjust Aberrations
P6021 Instruction Manual
CAUTION. To avoid damaging the probe, do not disconnect the probe termination
when measuring high currents. Leaving the probe unterminated can cause a high
voltage to develop in the secondary winding that may damage the current probe
transformer.
1. Connect the current probe calibration fixture to the fast rise output of the
calibration generator.
2. Set the fast rise output to maximum (1 Vpp).
3. Connect the P6021 probe BNC connector to the termination.
4. Connect the P6021 termination to the oscilloscope Ch 1 input.
5. Set the P6021 termination sensitivity to 2 mA/mV.
21
Service Information
6. Connect the probe to the current probe calibration fixture. Figure 7 shows
the proper probe orientation to the current probe calibration fixture.
Probe
Calibration fixture
Figure 7: Connecting the probe to the calibration fixture
7. The following adjustments affect aberrations and flat-top response:
C13, R10, and R12 of the probe (see Figure 8) and C22, C25, and R36 of the
termination (see Figure 9). To minimize aberrations and achieve the best
flat-top response, the following procedure is recommended. However, these
adjustments interact; you may have to readjust several of them to ensure
minimum aberrations..
a. Adjust R10 and R12 for flat response (see Figure 8). (Controls overshoot
in the first 10 ns time domain.)
b. Adjust C13 for flat response. (Controls slope in first 20 ns.)
c. Adjust R36 for flat response (see Figure 9). (Controls front corner, first
5ns.)
d. Adjust C25 to minimize aberrations in the 10 to 20 ns domain.
e. Adjust C22 to minimize aberrations in the 15 to 25 ns domain.
22
P6021 Instruction Manual
Service Information
R12
Probe (back)
R10
C13
P6021 AC CURRENT PROBE
TEKTRONIX, INC
Figure 8: Location of probe adjustments
R36
C25C22
Figure 9: Location of termination adjustments
125 TURNS
8. Set the termination sensitivity control to the 10 mA/mV position.
9. Set the oscilloscope Vertical Deflection to 1 mV/division.
10. Readjust adjustments as needed to ensure the optimum pulse response on
both sensitivity settings.
P6021 Instruction Manual
23
Service Information
Maintenance
The information in this section will help you maintain your probe for a long
service life.
CAUTION. To prevent damage to probe materials, avoid using chemicals that
contain benzene, benzine, toluene, xylene, acetone, or similar solvents.
To avoid degrading the performance of the probe, do not lubricate the polished
mating surfaces of the transformer.
Cleaning
Disassembling the Probe
To clean the probe body, use a soft cloth dampened in a solution of mild
detergent and water. To clean the core, open the jaw and clean the exposed core
surfaces with a cotton swab dampened with isopropyl alcohol (isopropanol) or
ethyl alcohol (fotocol or ethanol).
Do not lubricate the mating surfaces of the jaws. Any lubricant between the core
pieces should be removed with a recommended solvent.
Do not use chemicals containing benzine, benzene, toluene, xylene, acetone, or
similar solvents.
Do not use a petroleum based lubricant on the plastic. If the plastic slide
assembly requires lubrication, use a silicone-based grease sparingly.
Do not immerse the probe in liquids or use abrasive cleaners.
When cleaning the probe, look for any excessive wear of the slide parts that
might cause the probe to operate improperly. Dirty or worn mating surfaces
between the transformer and the lid can degrade low-frequency response. Clean
these surfaces if necessary.
Use the following procedure to disassemble the probe for cleaning or repair. You
will need a #1 PoziDriv screwdriver. Work over a smooth, clean surface so that
you can easily find any small pieces that may drop. Refer to Figure 10.
24
CAUTION. To avoid degrading the performance of the probe, do not touch the
polished mating surfaces of the transformer after cleaning.
P6021 Instruction Manual
Upper half of
probe body
Service Information
Spring
retainer
Spring
Ball bearing
Detent
Slide switch
Circuit board
Top h a l f of
transformer
Bottom half of
transformer
Figure 10: Disassembling the probe
1. Hold the probe horizontally with the slide switch up.
Probe nose
PoziDriv screws (2X)
Spring retainer
holder
Bottom housing
Cable
Strain relief boot
P6021 Instruction Manual
2. Move the strain relief boot back over the cable.
3. Be careful not to lose the small ball bearing you are about to expose.
4. Slowly lift the upper half of the probe body slightly at the cable end, and
push the assembly forward over the nose and off.
5. Remove the small ball bearing from the detent in the slide switch.
6. Lift the back of the return spring retainer out of the holder.
7. Remove the slide switch, spring retainer, and the top of the transformer as a
unit. Note the orientation of the movable portion of the transformer in the
slide.
25
Service Information
8. Remove the two PoziDriv screws that secure the spring retainer holder to the
probe body; then remove the small black plastic holder.
9. Lift the circuit board, transformer, and cable out of the probe body as a unit.
If you need to, you can unplug the transformer from the circuit board.
10. To reassemble the probe, reverse the procedure above.
When replacing the slide switch, spring retainer, and transformer top as a
unit, push the slide switch contacts gently inside the sides of the bottom
housing.
Repairing the Probe
Repairing the Termination
To make repairs inside the probe body, disassemble the probe as described in the
previous section. If you need to solder on the circuit board, use a minimum of
heat, and observe normal circuit board procedures.
If you need to replace the current transformer, replace the entire assembly
including the other half of the transformer core mounted in the slide switch. The
transformer halves are matched at the factory before shipment.
Repairing the termination can consist of replacing either the connectors or the
circuit board. These tasks are described below.
Replacing the Connectors. To replace the connectors, follow these steps.
1. Insert a small screwdriver between the cover and the termination near the
part number, and gently pry up the plastic snap-on cover from the termination.
2. Using a heat sink, unsolder the leads from the defective connector.
3. Unscrew and remove the defective connector.
4. Replace the defective connector with the new one.
5. Screw and solder the new connector back in place.
26
6. Align the switch with the slider in the front cover, and replace the front
cover.
Replacing the Circuit Board. To replace the circuit board, follow these steps.
1. Remove the plastic snap-on covers from the front and back of the termination.
2. Using a heat sink, unsolder the leads from the connectors.
3. Unscrew the two screws from the back of the circuit board.
P6021 Instruction Manual
Service Information
4. Remove the circuit board from the termination and repair it as you require,
being careful to use a minimum of heat and observe normal circuit board
procedures.
5. Replace the circuit board by reversing the above procedure.
6. Align the switch with the slider in the front cover, and replace the front
cover.
P6021 Instruction Manual
27
Service Information
28
P6021 Instruction Manual
Replaceable Electrical Parts
This section contains a list of the electrical components for the P6021. 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 products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
H Part number
H Instrument type or model number
H Instrument serial number
H Instrument modification number, if applicable
If you order a part that has been replaced with a different or improved part, your
local Tektronix field office or representative will contact you concerning any
change in part number.
Change information, if any, is located at the rear of this manual.
Using the Replaceable Electrical Parts List
The tabular information in the Replaceable Electrical Parts List is arranged for
quick retrieval. Understanding the structure and features of the list will help you
find all of the information you need for ordering replacement parts. The
following table describes each column of the electrical parts list.
P6021 Instruction Manual
29
Replaceable Electrical Parts
Parts list column descriptions
Column Column name Description
1 Component number The component number appears on diagrams and circuit board illustrations, located in the diagrams
section. Assembly numbers are clearly marked on each diagram and circuit board illustration in the
Diagrams section, and on the mechanical exploded views in the Replaceable Mechanical Parts list
section. The component number is obtained by adding the assembly number prefix to the circuit
number (see Component Number illustration following this table).
The electrical parts list is arranged by assemblies in numerical sequence (A1, with its subassemblies and parts, precedes A2, with its subassemblies and parts).
Chassis-mounted parts have no assembly number prefix, and they are located at the end of the
electrical parts list.
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. No entry indicates the part is good for all
serial numbers.
5 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an item
name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for
further item name i dentification.
6 Mfr. code This indicates the code number of the actual manufacturer of the part.
7 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number.
Abbreviations
Component Number
List of Assemblies
Chassis Parts
Mfr. Code to Manufacturer
Cross Index
Abbreviations conform to American National Standard ANSI Y1.1--1972.
Component Number
A23A2R1234 A23 R1234
Assembly number Circuit Number
Read: Resistor 1234 (of Subassembly 2) of Assembly 23
A2
Subassembly Number
(optional)
A list of assemblies is located at the beginning of the electrical parts list. The
assemblies are listed in numerical order. When a part’s complete component
number is known, this list will identify the assembly in which the part is located.
Chassis-mounted parts and cable assemblies are located at the end of the
Replaceable Electrical Parts List.
The table titled Manufacturers Cross Index shows codes, names, and addresses
of manufacturers or vendors of components listed in the parts list.
30
P6021 Instruction Manual
Replaceable Electrical Parts
Manufacturers cross index
Mfr.
code
TK1727 PHILIPS NEDERLAND BV
0JR03 ZMAN MAGNETICS INC 7633 S 180th KENT WA 98032
01121 ALLEN--BRADLEY CO 1201 S 2ND ST MILWAUKEE WI 53204--2410
24931 SPECIALTY CONNECTOR CO INC 2100 EARLYWOOD DR
51642 CENTRE ENGINEERING INC 2820 E COLLEGE AVE STATE COLLEGE PA 16801--7515
19701 PHILIPS COMPONENTS DISCRETE
32997 BOURNS INC
59660 TUSONIX INC 7741 N BUSINESS PARK DR
79727 C--W INDUSTRIES 130 JAMES WAY SOUTHAMPTON PA 18966--3818
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
91637 DALE ELECTRONICS INC 2064 12TH AVE
Manufacturer Address City, state, zip code
POSTBUS 90050 5600 PB EINDHOVEN THE NETHERLANDS
AFD ELONCO
FRANKLIN IN 46131
PO BOX 547
PO BOX 760 MINERAL WELLS TX 76067--0760
PRODUCTS
DIV RESISTIVE PRODUCTS FACILITY
AIRPORT ROAD
1200 COLUMBIA AVE RIVERSIDE CA 92507--2114
TRIMPOT DIV
TUCSON AZ 85740--7144
PO BOX 37144
BEAVERTON OR 97077--0001
PO BOX 500
COLUMBUS NE 68601--3632
PO BOX 609
P6021 Instruction Manual
31
Replaceable Electrical Parts
Replaceable electrical parts list
Component
number
A1 670-- 1117--00 CIRCUIT BD ASSY:PROBE 80009 670111700
A1C13 281--0122--00 CAP,VAR,CER DI:2.5-- 9PF,100V 59660 518--000A2.5--9
A1C14 283--0182--00 CAP,FXD,CER DI:51PF,5%,400V 19701 2805D1R810BH03F
A1L10 108--0526--00 COIL,RF:FIXED,50UH 0JR03 108--0526--00
A1L12 108--0526--00 COIL,RF:FIXED,50UH 0JR03 108--0526--00
A1L14 108--0529--00 COIL,RF:FIXED,1.6UH 0JR03 108--0529--00
A1R10 311--0635--00 RES,VAR,NONWW:TRMR,1K OHM,0.5W 32997 3329H--L58--102
A1R12 311--0635--00 RES,VAR,NONWW:TRMR,1K OHM,0.5W 32997 3329H--L58--102
A1R13 317--0821--00 RES,FXD,CMPSN:820 OHM,5%,0.125W 01121 BB8215
A1R14 317--0121--00 RES,FXD,CMPSN:120 OHM,5%,0.125W TK1727 SFR16 2322-- 180--
A1T1 120--0614--00 TRANSFORMER,CUR:UPPER AND LOWER HALF 80009 120061400
A1T14 120--0468--00 XFMR,TOROID:6 TURNS,BIFILAR,454 0JR03 120--0468--00
A2 670--1052--00 CIRCUIT BD ASSY:TERMINATION 80009 670105200
A2C22 281--0123--00 CAP,VAR,CER DI:5--25PF,100V 59660 518--000A5--25
A2C25 281--0123--00 CAP,VAR,CER DI:5--25PF,100V 59660 518--000A5--25
A2C30 283--0140--00 CAP,FXD,CER DI:4.7PF,+/-- 0.25PF,50V 51642 A100-- 050--NPO--47
A2J20 131--0602--00 CONN,RF PLUG:BNC;50 OHM,MALE, STR,FEEDTHRU/FRONT
Tektronix
part number
Serial no.
effective
Serial no.
discont’d
Name & description
Figure 11
PNL, 1.555L,0.285 L 0.375--32 THD,0.5
Mfr.
code
24931 28PR104--1
Mfr. part number
Figure 12
A2L22 108--0525--00 COIL,RF:FIXED,123NH 0JR03 108--0525--00
A2L31 108--0395--00 COIL,RF:FIXED,64UH 0JR03 108--0395--00
A2P39 131--0106--02 CONN,RCPT,ELEC:BNC,FEMALE 24931 28JR178--1
A2R22 317--0101--00 RES,FXD,CMPSN:100 OHM,5%,0.125W TK1727 SFR16 2322-- 180--
A2R24 321--0077--00 RES,FXD,FILM:61.9 OHM,1%,0.125W,TC=T0 91637 CMF55116G61R90F
A2R31 321--0069--00 RES,FXD,FILM:51.1 OHM,1%,0.125W,TC=T0 91637 CMF55116G51R10F
A2R33 321--0039--00 RES,FXD,FILM:24.9 OHM,1%,0.125W,TC=T0 91637 CMF55116G24R90F
A2R34 321--0038--00 RES,FXD,FILM:24.3 OHM,1%,0.125W,TC=T0 91637 CMF55116G24R30F
A2R35 317--0036--00 8843 RES,FXD,CMPSN:3.6 OHM,5%,0.125W 01121 BB36G5
A2R35 317--0240--00 8844 RES,FXD,CMPSN:24 OHM,5%,0.125W TK1727 SFR16 2322--180--
A2R36 311--0605--00 RES,VAR,NONWW:TRMR,200 OHM,0.5W 32997 3329H--G48-- 201
A2SW30 260--0723--00 SWITCH,SLIDE:DPDT,0.5A,125VAC 79727 GF 126--0028
32
P6021 Instruction Manual
Replaceable Electrical Parts
A1
A1T14
A1C13 A1R13 A1R10 A1R12
A1R14
Figure 11: P6021 probe component location
A2L31 A2SW30 A2C30 A2L22
A1L14
A1C14
A1L10
A1L12
A2
A2R31
A2C22
A2R22
A2R35
A2R33
A2R24
A2R36
A2R34A2C25
Figure 12: P6021 termination component location
P6021 Instruction Manual
33
Replaceable Electrical Parts
34
P6021 Instruction Manual
Replaceable Mechanical Parts
This section contains a list of the replaceable mechanical components for the
P6021. 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 products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
H Part number
H Instrument type or model number
H Instrument serial number
H Instrument modification number, if applicable
If you order a part that has been replaced with a different or improved part, your
local Tektronix field office or representative will contact you concerning any
change in part number.
Change information, if any, is located at the rear of this manual.
Using the Replaceable Mechanical Parts List
The tabular information in the Replaceable Mechanical Parts List is arranged for
quick retrieval. Understanding the structure and features of the list will help you
find all of the information you need for ordering replacement parts. The
following table describes the content of each column in the parts list.
P6021 Instruction Manual
35
Replaceable Mechanical Parts
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. No entry indicates the part is
good for all serial numbers.
5 Qty This indicates the quantity of parts used.
6 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an
item name may sometimes appear as incompl ete. Use the U.S. Federal Catalog handbook
H6-1 for further item name identification.
7 Mfr. code This indicates the code of the actual manufacturer of the part.
8 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number.
Abbreviations
Chassis Parts
Mfr. Code to Manufacturer
Cross Index
Abbreviations conform to American National Standard ANSI Y1.1--1972.
Chassis-mounted parts and cable assemblies are located at the end of the
Replaceable Electrical Parts List.
The table titled Manufacturers Cross Index shows codes, names, and addresses
of manufacturers or vendors of components listed in the parts list.
36
P6021 Instruction Manual
Replaceable Mechanical Parts
Manufacturers cross index
Mfr.
code
TK0435 LEWIS SCREW CO 4300 S RACINE AVE CHICAGO IL 60609-- 3320
0J9P9 GEROME MFG CO INC PO BOX 737 NEWBERG OR 97132
00779 AMP INC 2800 FULLING MILL
05469 BEARINGS INC 3634 EUCLID
24931 SPECIALTY CONNECTOR CO INC 2100 EARLYWOOD DR
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
91260 CONNOR SPRING AND MFG CO
Manufacturer Address City, state, zip code
HARRISBURG PA 17105
PO BOX 3608
CLEVELAND OH 44101
P O BOX 6925
FRANKLIN IN 46131
PO BOX 547
BEAVERTON OR 97077--0001
PO BOX 500
1729 JUNCTION AVE SAN JOSE CA 95112
A SLOSS AND BRITTAN INC CO
P6021 Instruction Manual
37
Replaceable Mechanical Parts
Replaceable mechanical parts list
Fig. &
index
number
13-- -- -- -- -- -- -- -- -- 1 P6021,PROBE,CURRENT:60 MHZ,250A,5FT W/TERM
--1 204-- 0367--02 1 .BODY HALF,PROBE:UPPER 80009 204036702
--2 214-- 0997--00 1 .BALL,BEARING:0.094,SST 05469 ORDER BY DESC
--3 351-- 0191--00 1 .SLIDE,TEST PROD: 80009 351019100
--4 214-- 0835--00 1 .SPRING,HLCPS:0.127 OD X 2.65 L,SST 91260 ORDER BY DESC
--5 214-- 0849--00 1 .RTNR RETURN SPR:BRS CD PL 80009 214084900
--6 131-- 0715--00 1 .CONTACT,ELEC:SPR,UPR SHL,CU BE NI PL 0J9P9 131--0715--00
--7 -- -------- -- -- -- 1 .TRANSFORMER:(SEE T1 REPL)
--8 136-- 0252--00 6 .SOCKET,PIN TERM:PCB,;FEMALE,STR,ACCOM
--9 352-- 0158--00 1 .HOLDER,CKT BD:DELRIN 80009 352015800
--10 -- ---- -- -- ---- -- 1 .CIRCUIT BD ASSY:PROBE(SEE A1 REPL)
--11 352--0159--00 1 .HOLDER,SPR RTNR:BLACK DELRIN
--12 211-- 0001-- 00 2 .SCREW,MACHINE:2--56 X 0.25,PNH,STL
--13 204--0368--04 1 .BODY HALF,PROBE:LOWER 80009 204036804
--14 175--1041--03 1 .CABLE ASSY,RF:62.5 OHM COAX,63.0 L.(STANDARD
--15 200--0852--08 1 .COVER,COAX TERM:W/SHLD & KNOB 80009 200085208
--16 131--0602--00 1 .CONN,RF PLUG::BNC,;50 OHM,MALE,STR,
--17 426--0423--03 1 .FRAME,COAX TERM: 80009 426042303
--18 131--0106--02 1 .CONN,RCPT,ELEC:BNC,FEMALE 24931 28JR178--1
--19 361--0219--00 2 .SPACER,SLEEVE:0.06 L X 0.093 ID,BRS 80009 361021900
--20 -- ---- -- -- ---- -- 1 .CIRCUIT BD ASSY:TERMINATION(SEE A2 REPL)
--21 211-- 0180-- 00 2 .SCR,ASSEM WSHR:2--56 X .0.25,PNH,BRS, .NP,POZ
--22 200--0851--03 1 .COV,COAX TERMN: 80009 200085103
--23 196--3120--01
Tektronix part
number
070--0947--XX
---- -- ---- -- -- -- 1 CT--4,CURRENT XFMR:20MHZ,1KA
Serial no.
effective
Serial no.
discont’d
Qty Name & description
.0.013.--0.020 DIA PIN,TIN/TIN SLEEVE,CLOSED
.BOTTOM.,0.142 L,0.038 DIA
ATTACHING PARTS
END ATTACHING PARTS
ONLY)
.FEEDTHRU./FRONT PNL, .1.555L,0.285 L .0.375--32 THD,0.5.
L 22 AWG .TAB,0.384 DIA MTG
ATTACHING PARTS
END ATTACHING PARTS
STANDARD ACCESSORIES
11LEAD,ELEC,PROBE GROUND;SDI,23 AWG,6.0 L
MANUAL,TECH:INSTRUCTION,P6021
OPTIONAL ACCESSORIES
Mfr.
code
00779 2--330808--7
80009 352015900
TK0435 ORDER BY DESC
80009 175104103
24931 28PR104--1
TK0435 ORDER BY DESC
80009
80009
Mfr. part number
196312001
0700947XX
38
P6021 Instruction Manual
Replaceable Mechanical Parts
5
4
1
2
6
7
3
12
11
10
9
8
14
13
15
17
16
22
Figure 13: P6021 exploded view
P6021 Instruction Manual
20
19
21
18
23
39
Replaceable Mechanical Parts
40
P6021 Instruction Manual
Index
A
aberrations, 21
accessories, termination, 1, 2
accessories, optional, 3
accessories, standard, 3–6
6-inch ground lead, 3
instruction manual, 3
accuracy, 7
Address, Tektronix, vi
adjusting the probe, 22
adjusting the termination, 22
attaching the probe, 1–6
B
bandwidth
checking, 16, 18, 20
specification, 7
C
C13, 22, 23
C22, 22, 23
C25, 22, 23
calibrating the probe, 13–28
Certifications, 9
checking performance, 13
cleaning the probe, 24
Compliances, 9
Contacting Tektronix, vi
continuous current, maximum, 8
current flow, direction, 4
current vs. frequency derating, 8
D
DC saturation, maximum, 10
direction of current flow, 4
disassembling the probe, 24–26
continuous current, maximum, 8
DC saturation, maximum, 10
input voltage, maximum, 8
insertion impedance, 10
pulse current, maximum, 8
sensitivity, 7
signal delay, 10
tilt, 9
environmental specifications, 10
altitude, 7
temperature, 7
equipment for calibration, 14
F
ferrite core, 12
frequency derating, 8
G
ground clips, using, 2
ground lead, 6-inch, 3
grounding the probe, 3, 5
H
High frequency response, 20
high frequency response, 3, 18–28
I
impedance, 5, 12
of oscilloscope, 1, 12
probe, 5
impedance-matching network, 12
input voltage, maximum, 8
insertion impedance, 5, 10
instruction manual, 3
interference, minimizing, 5, 6, 12
E
electrical parts list, 29
electrical specifications, 7–28
accuracy, 7
bandwidth, 7
P6021 Instruction Manual
L
loading effect, minimizing, 5
low frequency response, 16–21
lubricating the probe, 24
41
Index
M
magnetic shielding, 6
maximum continuous current, 8
maximum DC saturation, 10
maximum input voltage, 8
maximum pulse current, 8
mechanical parts list, 35
O
oscilloscope, 1–3
impedance, 1
input connectors, 1
use with, 1–6
P
parts list
electrical, 29
mechanical, 35
Performance Verification, Test Record, P6021, 20
phase response, 11
Phone number, Tektronix, vi
physical specifications, 10
cable length, 10
weight, 10
probe
adjustments, 21
calibration, 13, 14
circuit description, 12
compatibility with oscilloscope, 1, 12
description, 1–6
disassembly, 24
impedance of, 5
parts, 2
repair, 26
shielding, 6, 12
Product support, contact information, vi
pulse current, maximum, 8
R
R10, 22, 23
R12, 22, 23
R36, 22, 23
repairing
probe, 26
termination, 26
replacing
termination circuit board, 26
termination connectors, 26
transformer, 26
S
safety, service information, 13
sensitivity, 15–21
checking, 15–21
specification, 7
sensitivity control, 4, 7, 12
sensitivity setting, 4, 7, 12
service, safety warnings, 13
Service support, contact information, vi
shielding, 6, 12
signal delay, 10
sliding switch, 4, 7, 12
soldering, procedures for, 26
specifications, 7–9
electrical, 7–28
environmental, 10
physical, 10
T
Technical support, contact information, vi
Tektronix, contacting, vi
termination, 1, 2
adjustments, 21
circuit description, 12
repair, 26
replacing circuit board, 26
replacing connectors, 26
test equipment, 14
oscilloscope settings, 21
recommended, 14
Test Record, Performance Verification, P6021, 20
tilt, 9
transformer, 12
maintenance, 24
matching, 26
primary, 4
replacing, 26
secondary, 4
turns ratio, 12
U
URL, Tektronix, vi
42
P6021 Instruction Manual
Index
V
vertical scale settings, with oscilloscope, 4
vertical sensitivity, 4, 12
increasing, 5
voltage, maximum, 8
W
Web site address, Tektronix, vi
winding, 5, 12
P6021 Instruction Manual
43
Index
44
P6021 Instruction Manual
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