Instructions
P6156 For 50 Ohm Oscilloscopes
070-6430-01
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.
Copyright © T ektronix, Inc. All rights reserved. T ektronix 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.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
T ektronix 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 T ektronix distributor. If any such product proves
defective during this warranty period, T ektronix, 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 T ektronix, shipping charges prepaid, and
with a copy of customer proof of purchase. T ektronix shall pay for the return of the product to Customer if the shipment is
to a location within the country in which the T ektronix 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix 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-T ektronix 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 LISTED PRODUCTS 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 CUST OMER 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.
Contacting Tektronix
Product
Support
Service
Support
Website www.tektronix.com
For other
information
To write us Tektronix, Inc.
For questions about using Tektronix measurement products, call toll
free in North America:
1-800-833-9200
6:00 a.m. – 5:00 p.m. Pacific time
Or contact us by e-mail:
support@tek.com
For product support outside of North America, contact your local T ektronix distributor
or sales office.
Contact your local Tektronix distributor or sales office. Or visit our web site for a
listing of worldwide service locations.
In North America:
1-800-833-9200
An operator will direct your call.
P.O. Box 500
Beaverton, OR 97077
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
To Avoid Fire or
Personal Injury
Connect and Disconnect Properly . 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.
The common terminal is at ground potential. Do not connect the common
terminal to elevated voltages.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
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 .
P6156 Instructions
i
General Safety Summary
ii
P6156 Instructions
Operating Basics
Probe Tip Connections
The P6156 (10X) is a DC to 3.5 GHz, compact size, fast-rise, low input
capacitance, passive voltage probe with a constant input resistance over a wide
range of frequencies. It is designed for use with wide band oscilloscope
amplifiers with 50 W inputs, such as the Tektronix 11000 Series with the 11A71
plug-in. Options are available for 1X, 20X and 100X attenuation values. The
attenuator tips are color coded for proper tip identification. An “identify” button
on the probe head provides trace identity and allows control of one or more
programmable functions in 11000 Series oscilloscopes. The P6156 is equipped
with a BNC connector that provides trace identify and digital readout information when used with plug-ins or mainframes incorporating these features. With
the appropriate adapters and interconnects, the P6156 probe can be used with
sampling systems.
To minimize inductive effects that can cause ringing at high frequencies (see
Figure 1) keep all signal and ground leads as short as possible. A good way to
make probe connections is to touch the tip and ground sleeve directly to the
appropriate points in the test circuit or through the bayonet ground adapter.
When the ground connection cannot be made in this manner, attach a ground
contact to the sleeve. If the signal originates from an instrument with a coaxial
output connector, use the appropriate probe-tip adapter. The adapter provides a
correct environment for the signal and eliminates noise and other electromagnetic interference.
P6156 Instructions
You can use the probe hook tip in most low-frequency measurement applications
without adversely affecting the display. The ground strap assembly acts as a
much larger series inductor at very high frequencies. Its effect on the display may
be noticeable with pulse and rise times faster than 0.3 to 0.4 nanoseconds.
1
Operating Basics
100
90
Low inductance ground spring
3“ Ground lead
10
0%
Figure 1: Ground lead effects
Use with 50 Ohm Input Oscilloscopes
P6156 probes are designed to work directly into 50 W wide-band oscilloscopes;
no termination is necessary. For 11000 oscilloscopes, the Auto Scale Factor also
indicates the correct deflection factor for signals measured at its probe tip (see
the Readout and Trace Identify section to follow). The specifications and
derating information listed in the Specifications section will apply when probes
are used in this manner. Fifty-ohm systems using other than BNC connectors
will require appropriate adapters between the probe connector and system input.
Use with 1 Megohm Input Oscilloscopes
High resistance inputs require external 50 W terminations (Tektronix part number
011-0049-01). Introduction of a termination will result in a slight signal
reflection in the system (appearing at twice the cable delay time) due to the shunt
capacitance of the oscilloscope in parallel with the 50 W termination. To reduce
the effects of this reflection, add a 2X attenuator between the probe connector
and the 50 W termination. This will decrease the reflection by a factor of four
while increasing the attenuation by a factor of two. For sine wave measurements,
the 2X attenuator is recommended to minimize standing waves.
Readout and Trace Identify
When connected to oscilloscope systems with Autoscale Factor Readout
circuitry, a resistor in the probe provides information to the oscilloscope to
incorporate probe attenuation into the deflection readout. In such systems,
readout and trace identifying functions become inoperative if a termination,
2
P6156 Instructions
attenuator, or adapter is inserted between the probe connector and the oscilloscope or plug-in input.
NOTE. The 20X attenuation factor autoscale readout feature is available on
11000 Series oscilloscopes only. To use the P6156 with 7000 Series, 5000 Series,
2400 Series, or other oscilloscopes, set the probe compensation box attenuator
switch to 10X and multiply the scope reading by a factor of 2.
Probe Tip to BNC and SMA Termination Adapters
These adapters will terminate a 50 W system while providing the system voltage
at a special probe tip receptacle. Since the terminating resistor and 50 W line are
in parallel (as seen by the probe tip), the effective source impedance for the
probe will be 25 W.
Operating Basics
Maximum Voltage and Power Input
The DC power rating for P6156 probes is 0.5 watt. The corresponding DC input
voltage for each probe is listed in the Specifications section on page 4.
In a 50 W oscilloscope system, selecting AC coupling mode or using an external
coupling capacitor will block DC current flow into the probe. When an external
termination is used with a high-resistance input system, selecting AC coupling
will not block DC current flow through the termination. Use of the AC coupling
mode or an external coupling capacitor will result in some sacrifice of system
low-frequency response.
At high frequencies, voltage derating as listed in the Specifications section
applies. The RMS voltage of a pulse signal should be estimated before measurement. The pulse duration, duty factor, and DC level determine the RMS signal
voltage.
Peak voltages up to 500 volts may be measured with P6156 probes, provided the
RMS equivalent is no greater than the DC maximum input voltage listed in the
Specifications section. In no case should any portion of the signal exceed the
listed DC input rating for longer than 1 millisecond.
P6156 Instructions
3
Specifications
The following specifications apply when the instrument warms up for a period of
at least 20 minutes in an environment that does not exceed the limits described in
Table 2 below.
T able 1: Electrical characteristics
Characteristic 1X 10X 20X 100X
1,2
1,2
±5% ±3% ±3% ±3%
50 W ±5% 500 W ±3% 1000 W ±3% 5000 W ±3%
Attenuation Tolerance
Input Resistance
Input Capacitance N/A ≤1 pF ≤1 pF ≤2.1 pF
Maximum Continuous
15 V
RMS
15 V
RMS
22 V
RMS
50 V
RMS
Nondestructive Input Voltage
Probe Bandwidth
Rise Time
3
4
≥1.5 GHz ≥3.5 GHz ≥3.5 GHz ≥1.5 GHz
≤300 ps ≤100 ps ≤100 ps ≤233 ps
Signal Delay 7.75 ±0.05 ns 7.75 ±0.05 ns 7.75 ±0.05 ns 7.75 ±0.05 ns
1
System characteristic.
2
Oscilloscope input 50 W ±1%.
3
See Figure 2.
4
Probe only.
9dB
6dB
3dB
Normalized
Va/Vin (dB)
0
–3dB
–6dB
–9dB
1GHz 2GHz 3GHz 4GHz 5GHz0
Frequency (GHz)
10X
20X
100X
Figure 2: P6156 frequency vs impedance
4
P6156 Instructions
T able 2: Environmental characteristics
Characteristic Description
Temperature Range
Operating –15_ C to +55_ C (+5_ F to +131_ F)
Nonoperating –62_ C to +85_ C (–80_ F to +185_ F)
Humidity
1
1
Reference to MIL-E-1600F, paragraph 4.5.9 through 4.5.9.5.1, class 3.
Five cycles (120 hr) at 95% to 97%
relative humidity 30_ C to 60_ C
T able 3: Physical characteristics
Characteristic Description
Length 1.5 m (4.9 ft.)
Shipping Weight .907 kg (2 lbs.)
Specifications
T able 4: Certifications and compliances
Underwriters Laboratories The P6156 probe is UL listed.
P6156 Instructions
5
Replaceable Parts
2
1
4
3
8
7
9
5 6
Option 08
11 12
10
Standard accessories
13
Figure 3: P6156 probe with accessories
Replaceable parts: P6156 probe and accessories
Fig. &
index
number
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0308–00 1 PROBE HEAD:2.0 METER 80009 206–0308–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0380–00 1 PROBE TIP ASSY:10X H2294 80009 206–0380–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0380–00 1 PROBE TIP ASSY:10X H2294 80009 206–0380–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
Tektronix
part number
206–0382–00 1 PROBE TIP ASSY:100X H2296 80009 206–0382–00
206–0381–00 1 PROBE TIP ASSY:20X H2295 80009 206–0381–00
Serial no.
effective
Serial no.
discont’d
Qty Name & description Mfr. code Mfr. part number
P6156 STANDARD (10X)
OPTION 25 (ADDS 100X ATTENUATOR)
OPTION 26 (ADDS 20X ATTENUATOR)
14
6
P6156 Instructions
Replaceable Parts
Replaceable parts: P6156 probe and accessories (Cont.)
Fig. &
index
number
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0380–00 1 PROBE TIP ASSY:10X H2294 80009 206–0380–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0380–00 1 PROBE TIP ASSY:10X H2294 80009 206–0380–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
3 –1 204–1049–00 1 BODY SHELL:TIP COVER TK2565 204–1049–00
–2 206–0380–00 1 PROBE TIP ASSY:10X H2294 80009 206–0380–00
–3 131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
–4 013–0226–00 1 CONNECTOR,BNC:BNC TO PROBE TIP ADAPTER 24931 28P264–2
–5 013–0227–00 1 CONNECTOR,BNC:50 OHM,BNC TO PROBE TIP 24931 28P312–1
–6 013–0237–00 1 ADPTR,PROBE TIP:SMA TO COMPACT SIZE GHZ 64537 JA115S
–7 343–1003–01 1 COLLAR,GND:P6130 TK2565 343–1003–01
–8 195–4240–00 1 LEAD,ELECTRICAL:0.025 DIA,COPPER,2.3 L TK2469 195–4240–00
–9 013–0107–06 9139 1 TIP,PROBE:MINIATURE/COMPACT SIZE, 80009 013–0107–06
–10 344–0398–00 8935 1 CLIP,ELECTRICAL:ALLIGATOR,0.155 L,STL CS PL 80009 344–0398–00
–11 –––––––––– 1 MARKER SET.CA:2 EA VARIOUS COLORS
–12 206–0364–00 1 TIP,PROBE:MICROCKT TEST,0.05 CTR 80009 206–0364–00
–13 196–3113–03 8935 1 LEAD,ELECTRICAL:STRD,22 AWG,3.0 L,8–N TK2469 196–3113–03
–14 352–0670–00 1 HOLDER,PROBE:ATTENUATOR TIPS (3) TK2565 352–0670–00
Tektronix
part number
206–0379–00 1 PROBE TIP ASSY:1X H2293 80009 206–0379–00
206–0379–00 1 PROBE TIP ASSY:1X H2293 80009 206–0379–00
206–0381–00 1 PROBE TIP ASSY:20X H2295 80009 206–0381–00
206–0382–00 1 PROBE TIP ASSY:100X H2296 80009 206–0382–00
020–1539–00 1 ACCESSORY PKG:P6156 80009 020–1539–00
013–0107–07 9140 1 TIP,PROBE:MINIATURE/COMPACT SIZE TK2565 013–0107–07
196–3305–00 8936 1 LEAD,ELECTRICAL:22 AWG,6.0 L,W/CLIP TK2469 196–3305–00
196–3113–02 8936 1 LEAD,ELECTRICAL:STRD,22 AWG,6.0 L,8–N TK2469 196–3113–02
070–6430–00 1 SHEET,TECHNICAL:INSTRUCTION,P6156,DP TK2548 PER TEK P/N
Serial no.
effective
Serial no.
discont’d
Mfr. part numberMfr. codeName & descriptionQty
OPTION 27 (ADDS 1X ATTENUATOR)
OPTION 28 (ADDS 1X,10X,100X ATTENUATOR)
OPTION 08 (ADDS ENG.KIT)
STANDARD ACCESSORIES
(SEE OPTIONAL ACCESSORIES)
P6156 Instructions
7
Replaceable Parts
Replaceable parts: P6156 probe and accessories (Cont.)
Fig. &
index
number
Tektronix
part number
–––––––––– 1 SMG50:(PKG OF 20)
013–0202–02 1 ADAPTER,PROBE:SUBMINIATURE/COMPACT TO TK2565 013–0202–02
013–0226–00 1 CONNECTOR,BNC:BNC TO PROBE TIP ADAPTER 24931 28P264–2
013–0227–00 1 CONNECTOR,BNC:50 OHM,BNC TO P TIP 24931 28P312–1
013–0237–00 1 ADPTR,PROBE TIP:SMA TO COMPACT SIZE 64537 JA115S
015–1018–00 1 ADAPTER,CONN:SMA MALE TO BNC FEMALE 24931 29JP124–1
016–0633–00 1 MARKER SET,CA:2 EA VARIOUS COLORS 80009 016–0633–00
020–1539–00 1 ACCESSORY PKG:P6156 80009 020–1539–00
131–3685–01 1 CONTACT,ELEC:SPRING TIP,GOLD PLATED 80009 131–3685–01
196–3113–03 1 LEAD,ELECTRICAL:STRD,22 AWG,3.0 L,8–N TK2469 196–3113–03
206–0379–00 1 PROBE TIP ASSY:1X 80009 206–0379–00
206–0380–00 1 PROBE TIP ASSY:10X 80009 206–0380–00
206–0381–00 1 PROBE TIP ASSY:20X 80009 206–0381–00
206–0382–00 1 PROBE TIP ASSY:100X 80009 206–0382–00
013–0254–00 9307 1 ADAPTER,CONN:BNC TO PROBE TIP,MALE 24931 28P–302–2
131–5031–00 8926 1 CONNECTOR,PROBE:PKG OF 25,COMP ACT 8009 131–5031–00
Serial no.
effective
Serial no.
discont’d
Mfr. part numberMfr. codeName & descriptionQty
OPTIONAL ACCESSORIES
Manufacturers cross index
Mfr.
code
24931 BERG ELECTRONICS INC BERG ELECTRONICS RF/COAXIAL DIV
64537 KDI/TRIANGLE ELECTRONICS INC 60 S JEFFERSON RD WHIPPANY, NJ 07981
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
TK2469 UNITREK CORPORATION 3000 LEWIS & CLARK HWY
TK2548 XEROX CORPORATION 14181 SW MILLIKAN WAY BEAVERTON, OR 97005
TK2565 VISION PLASTICS INC 26000 SW PARKWAY CENTER DRIVE WILSONVILLE, OR 97070
Manufacturer Address City , state, zip code
FRANKLIN, IN 46131
2100 EARLYWOOD DR
PO BOX 547
BEAVERT ON, OR 97077–0001
PO BOX 500
VANCOUVER, W A 98661
SUITE 2
8
P6156 Instructions
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