Models 2634B, 2635B, and 2636B
System SourceMeter Instruments
Quick Start Guide
Safety precautions
The following safety prec autions should be observed before using this product and any
associated instrumentation. A lthough some instruments and accessories would normally be
used with nonhazardous voltages, there are situations where hazardous conditions may be
present.
This product is intended for use by personnel who recognize shock hazards and are familiar
with the safety precautions required to avoid possible injur y. Read and follow all installation,
operation, and maintenance information carefully before using the product. Refer to the user
documentation for complete product specications.
If the product is used in a manner not specied, the protection provided by the product
warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of
equipment, for ensuring that the equipment is operated within its specications and operating
limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in electrical safety
procedures and proper use of the instrument. They must be protected from electric shock and
contact with hazardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating
properly, for example, setting the line voltage or replacing consumable materials. Maintenance
procedures are described in the user documentation. The procedures explicitly st ate if the
operator may perform them. Otherwise, they should be performed only by service personnel.
Service personnel are trained to work on live circuits, perform safe installations, and
repair products. Only properly trained service personnel may perform installation and
service procedures.
Keithley products are designed for use with electrical signals that are measurement, control,
and data I/O connections, with low transient overvoltages, and must not be directly connected
to mains voltage or to voltage sources with high transient overvoltages. Measurement
Categor y II (as referenced in IEC 60664) connections require protection for high transient
overvoltages of ten associated with local AC mains connections. Certain Keithley measuring
instruments may be c onnected to mains. These instruments will be marked as categor y II
or higher.
Unless explic itly allowed in the specications, operating manual, and instrument labels, do
not connect any instrument to mains.
Exercise extreme caution when a shock haz ard is present. Lethal voltage may be present on
cable connector jacks or test xtures. The American National Standards Institute (ANSI)
states that a shock hazard exists when voltage levels greater than 30 V RMS, 42.4 V peak,
or 60 VDC are present. A good safety practic e is to expect that hazardous voltage is present
in any unknown circuit before measuring.
Operators of this product must be protected from elec tric shock at all times. The responsible
body must ensure that operators are prevented acc ess and/or insulated from every
connection point. In some cases, connections must be exposed to potential human contact.
Product operators in these circumstances must be trained to protect themselves from the risk
of electric shock. If the circuit is capable of operating at or above 1000 V, no conductive part of
the circuit may be exposed.
Do not connect switching c ards directly to unlimited power circuits. They are intended to be
used with impedanc e-limited sources. NEVER connect switching cards directly to AC mains.
When connecting sources to switching cards, install protective devices to limit fault current and
voltage to the card.
Before operating an instrument, ensure that the line cord is connected to a properly-grounded
power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear,
cracks, or breaks before each use.
When installing equipment where access to the main power cord is restricted, such as rack
mounting, a separate main input power disconnect device must be provided in close proximity
to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any other instruments while
power is applied to the circuit under test. ALWAYS remove power from the entire test system
and discharge any capacitors before: connecting or disconnecting cables or jumpers,
installing or removing switching cards, or making internal changes, such as installing or
removing jumpers.
Do not touch any object that could provide a current path to the common side of the circuit under
test or power line (earth) ground. Always make measurements with dry hands while standing on
a dry, insulated surface capable of withstanding the voltage being measured.
For safety, instruments and acc essories must be used in ac cordance with the operating
instructions. If the instruments or accessories are used in a manner not specied in the
operating instr uctions, the protection provided by the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal
levels are dened in the specications and operating information and shown on the instrument
panels, test xture panels, and switching cards.
When fuses are used in a product, replace with the same t ype and rating for continued
protection against re hazard.
Chassis connections must only be used as shield connections for measuring circuits, NOT as
protective earth (safety ground) connections.
If you are using a test xture, keep the lid closed while power is applied to the device under test.
Safe operation requires the use of a lid interlock.
If a screw is present, connect it to protective earth (safety ground) using the wire
recommended in the user documentation.
The symbol on an instrument means caution, risk of hazard. The user must refer to the
operating instr uctions located in the user documentation in all cases where the symbol is
marked on the instrument.
The symbol on an instrument means warning, risk of electric shock. Use st andard safety
precautions to avoid personal contact with these voltages.
The symbol on an instrument shows that the surface may be hot. Avoid personal c ontact to
prevent burns.
The symbol indicates a connection terminal to the equipment frame.
If this symbol is on a product, it indicates that mercur y is present in the display lamp. Please
note that the lamp must be properly disposed of according to federal, state, and local laws.
The WARNING heading in the user documentation explains hazards that might result
in personal injur y or death. Always read the associated information ver y carefully before
performing the indicated procedure.
The CAUTION heading in the user documentation explains hazards that could damage the
instrument. Such damage may invalidate the warranty.
The CAUTION heading with the symbol in the user documentation explains hazards that
could result in moderate or minor injury or damage the instrument. Always read the associated
information ver y carefully before performing the indicated procedure. Damage to the instrument
may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and re, replac ement components in mains circuits
— including the power transformer, test leads, and input jacks — must be purchased from
Keithley. Standard fuses with applicable national safety approvals may be used if the rating and
type are the same. The detachable mains power cord provided with the instrument may only be
replaced with a similarly rated power cord. Other components that are not safety-related may
be purchased from other suppliers as long as they are equivalent to the original component
(note that selected parts should be purchased only through Keithley to maintain accuracy
and functionality of the product). If you are unsure about the applicability of a replacement
component, call a Keithley oce for information.
Unless other wise noted in product-specic literature, Keithley instruments are designed to
operate indoors only, in the following environment: Altitude at or below 2,000 m (6,562 ft);
temperature 0 °C to 50 °C (32 °F to 122 °F); and pollution degree 1 or 2.
To clean an instrument, use a cloth dampened with deionized water or mild, water-based
cleaner. Clean the exterior of the instr ument only. Do not apply cleaner directly to the instrument
or allow liquids to enter or spill on the instrument. Products that consist of a circuit board with
no case or chassis (e.g., a data acquisition board for installation into a computer) should never
require cleaning if handled according to instructions. If the board becomes contaminated and
operation is aected, the board should be returned to the factory for proper cleaning/ser vicing.
Safety precaution revision as of June 2017.
Power and environmental specications
For indoor use only.
Power supply
Maximum VA
Operating altitude
Operating
temperature
Storage temperature
Pollution degree
DC source output
Pulse region 4*
100 VAC to 240 VAC, 50 Hz to 60 Hz
(autosensing)
240 VA
Maximum 2000 m (6562 ft) above
sea level
0 °C to 50 °C, 70% relative humidity
up to 35 °C
Derate 3% relative humidity, 35 °C to 50 °C
25 °C to 65 °C
1 or 2
30.3 W maximum
±200 VDC maximum
±1.515 A at ±20 VDC
±101 mA at ±200 VDC
Region maximums: 10 A at 5 V
Maximum pulse width: 1 ms
Maximum duty cycle: 2.2%
Measurement
input
Measurement category O
Voltage: 200 VDC maximum HI to LO,
250 VDC LO to ground
Current: 101 mA at 200 V;
1.515 A at 20 V
Impedance: Variable
*See full specications for other pulse regions
Carefully consider and congure the appropriate outputo state, source levels, and compliance levels before
connecting the instrument to a device that can deliver
energy. Failure to consider the output-o state, source
levels, and compliance levels may result in damage to the
instrument or to the device under test.
Introduction
The Keithley Instruments Series 2600B System SourceMeter®
instruments are medium-power source-measure units (SMUs)
that simplify test processes by combining source and measure
capabilities in a single instrument. A Series 2600B SourceMeter
instrument is a scalable, high-throughput, cost-eective solution
for precision DC, pulse, and low-frequency AC source-measure
testing.
Complete documentation for the Series 2600B instruments is
available for download on the Keithley web page at
tek.com/keithley.
The Series 2600B documentation includes:
• Quick Start Guide: This document. It provides unpacking
instructions, describes basic connections, and reviews basic
operation information.
• Reference Manual: Provides comprehensive information
about the instrument’s features, operation, optimization,
maintenance, troubleshooting, and programming commands.
Software for the Series 2600B instruments is also available for
download from the Keithley website at tek.com/keithley. On the
website, search for the specic software you need. Available
software includes:
• Test Script Builder: Simplies building test scripts for
instruments enabled for Keithley’s Test Script Processor
®
(TSP
).
• KickStart Instrument Control Software: Enables quick
test setup and data visualization when using one or more
instruments.
• IVI-COM Driver: Works in any development environment
that supports COM programming, including Microsoft
®
Visual
Basic, Microsoft Visual C++, and National Instruments
LabVIEW
™
.
• Keithley I/O layer: Manages communications between
Keithley instrument drivers and software applications and
the instrument.
Unpack and inspect the instrument
To unpack and inspect the instrument:
1. Inspect the box for damage.
2. Open the top of the box.
3. Remove the documentation and accessories.
4. Carefully lift the instrument out of the box.
5. Remove the packaging insert.
6. Inspect the instrument for any obvious signs of physical
damage. Report any damage to the shipping agent
immediately.
In addition to the Series 2600B System SourceMeter® instrument,
you should have received:
1. Interlock DB-25 male connector kit hardware.
2. One RJ-45 LAN crossover cable for the 2636B. Two
RJ-45 LAN crossover cables for the 2634B and 2635B.
3. Power line cord.
4. One triaxial to alligator clip cable for the 2635B. Two triaxial to
alligator clip cables for the 2634B and 2636B.
5. 16 AWG black grounding wire.
6. Three-pin screw terminal connector.
7. UL safety supplement (not shown).
8. Safety Precautions (not shown).
9. 2634B, 2635B, and 2636B System SourceMeter Instruments
Quick Start Guide (this document; not shown).
Refer to the packing list for additional items that might have
shipped with your instrument.
Items shipped may vary from items pictured here.
Connect the instrument
Important test system safety information
This product is sold as a stand-alone instrument that may become
part of a system that could contain hazardous voltages and
energy sources. It is the responsibility of the test system designer,
integrator, installer, maintenance personnel, and service personnel
to make sure the system is safe during use and is operating
properly. You must also realize that in many test systems a single
fault, such as a software error, may output hazardous signal levels
even when the system indicates that there is no hazard present. It
is important that you consider the following factors in your system
design and use:
• The international safety standard IEC 61010-1 denes voltages
as hazardous if they exceed 30 V
for equipment rated for dry locations. Keithley Instruments
products are only rated for dry locations.
• Read and comply with the specications of all instruments
in the system. The overall allowed signal levels may be
constrained by the lowest rated instrument in the system.
For example, if you are using a 500 V power supply with a
300 VDC rated switch, the maximum allowed voltage in the
system is 300 VDC.
• Make sure any test xture connected to the system protects the
operator from contact with hazardous voltages, hot surfaces,
and sharp objects. Use shields, barriers, insulation, and safety
interlocks to accomplish this.
and 42.4 V
RMS
, or 60 VDC
PEAK
• Cover the device under test (DUT) to protect the operator
from ying debris in the event of a system or DUT failure.
• Double-insulate all electrical connections that an operator can
touch. Double insulation ensures the operator is still protected
even if one insulation layer fails. Refer to IEC 61010-1 for
specic requirements.
• Make sure all connections are behind a locked cabinet door
or other barrier. This protects the system operator from
accidentally removing a connection by hand and exposing
hazardous voltages. Use high-reliability fail-safe interlock
switches to disconnect power sources when a test xture
cover is opened.
• Where possible, use automatic handlers so that operators
are not required to access the DUT or other potentially
hazardous areas.
• Provide training to all users of the system so that they
understand all potential hazards and know how to protect
themselves
from injury.
• In many systems, during power up, the outputs may be in an
unknown state until they are properly initialized. Make sure
the design can tolerate this situation without causing operator
injury or hardware damage.
Install the instrument
You can use the 2600B on a bench or in a rack. See the
instructions that came with your rack-mount kit if you are
installing the 2600B in a rack.
To keep users safe, always read and follow all safety warnings
provided with each of the instruments in your system.
Connect line power
The Series 2600B operates from a line voltage of 100 V to
240 V at a frequency of 50 Hz or 60 Hz. Line voltage is
automatically sensed (there are no switches to set). Make sure
the operating voltage in your area is compatible.
The power cord supplied with the Series 2600B contains a
separate protective earth (safety ground) wire for use with
grounded outlets. When proper connections are made,
the instrument chassis is connected to power-line ground
through the ground wire in the power cord. In the event of a
failure, not using a properly grounded protective earth and
grounded outlet may result in personal injury or death due to
electric shock.
Do not replace detachable MAINS supply cords with
inadequately rated cords. Failure to use properly rated cords
may result in personal injury or death due to electric shock.
Operating the instrument on an incorrect line voltage
may cause damage to the instrument, possibly voiding the
warranty.
To connect line power:
Connect power line cord
1. Make sure the front-panel power switch is in the
o (0) position.
2. Connect the socket of the supplied power cord to
the power connection on the rear panel.
3. Connect the plug of the power cord to a grounded
AC outlet.
Turn on the instrument
Turn on the instrument by pressing the front-panel POWER switch
to the on (|) position.
Power switch ON position
Power-up sequence
When the instrument is turned on, you should see:
• A series of dots.
• All segments of the display light.
• A brief display showing the instrument model. For example,
if the instrument is a 2636B, the display shows “KEITHLEY
Model 2636B.”
• Line frequency detection and other startup checks.
The entire power-up process takes approximately 30 seconds
to complete. When initialization is complete, if the instrument
is a 2634B or 2636B, you see the default display screen
shown below.
AUTO
SrcA:+000.000mV SrcB:+000.000mV
If the instrument is a 2635B, you see the default display screen
shown below.
AUTO
SrcA:+000.000mV LimA:100.000mA
Test the instrument
The following test veries the basic operation of the 2634B,
2635B, and 2636B. In this test, you will use the front-panel
controls shown below to source voltage and measure the voltage
output.
You do not need to connect a device under test (DUT) for this
test.
Step 1: Set source function, range, and level
If the instrument has two channels (2634B or 2636B) and is in
dual-channel display mode, press the DISPLAY button once to
show only the settings for SMU channel A.
1. Press the SRC key. You will see a blinking character in
the SrcA value eld. Conrm that mV is displayed; if not,
press the SRC key again.
2. While that character is still blinking, press the up or down
RANGE keys
until 20 V is displayed.
AUTO
Source value set to 20.0000 V
P
U
S
H
T
O
/
E
N
T
E
R
P
U
P
U
S
H
T
T
E
R
P
U
S
D
I
T
/
E
N
T
E
P
U
S
H
T
O
T
E
R
D
I
T
/
E
N
T
E
The main display screen reappears: Step 2: Set the source limit
Source limit set to 10.0000mA
AUTO
1. Press the LIMIT
the LimA value eld.
key. You will see a blinking character in
2. While that character is blinking, press the RANGE
SrcA:+00.0000 V LimA:100.000mA
as needed to select the 10 mA limit range. Verify that the
source limit value in the LimA eld is 10.0000 mA.
3. Press the CURSOR keys to move the cursor to the
10s digit.
4. Press the navigation wheel
The EDIT indicator appears in the upper left corner
of the display.
5. Turn the navigation wheel
20.0000 V, and then press the navigation wheel
T
I
D
E
S
H
T
O
E
D
R
I
E
T
T
/
E
N
to enter EDIT mode.
N
E
/
T
I
D
E
O
H
T
O
E
R
to set the source value to
E
/
T
I
D
E
N
P
U
S
H
T
O
E
R
to enter
SrcA:+20.0000 V LimA:10.0000mA
the selection and exit EDIT mode.
AUTO
SrcA:+20.0000 V LimA:100.000mA
keys
AUTO
Step 3: Set measurement function and range
Measurement function set to voltage (V)
1. Press the MEAS
key as many times as needed to select
the V (voltage) measurement function. In the following gure,
the measurement function has been set to “V.”
2. Press the AUTO
key as many times as needed to
select the AUTO range function. When AUTO is selected,
the Series 2600B automatically selects the best range for the
measured value. You will briey see the display shown below,
and then the main display screen reappears.
AUTO
SrcA:+20.0000 V LimA:10.0000mA
AUTO
AUTO
SrcA:+20.0000 V LimA:10.0000mA
Step 4: Turn the output on
Turn the output on by pressing the OUTPUT ON/OFF
control
(for 2634B and 2636B) or (2635B). The ON/
OFF indicator LED lights and measurements begin.
Step 5: Observe measurements
Observe the measured voltage on the main area of
front-panel display. The readings should be very close to the
20 V source value.
Step 6: Turn the output o
When you nish making measurements, turn the output
o by pressing the OUTPUT ON/OFF
output indicator LED turns o.
or control. The
These steps conrm the basic functionality of your instrument.
Turn the instrument power OFF now.
For a basic understanding of the Series 2600B functionality, we
recommend that rst-time users become familiar with the Series
2600B Reference Manual (document number 2600BS-901-01).
FAQs
Where can I nd updated drivers?
For the latest drivers and additional support information, see the
Keithley Instruments support website.
To see what drivers are available for your instrument:
1. Go to tek.com/keithley.
2. Select SUPPORT.
What should I do if I see an error message when I turn
the instrument on?
If an error message is displayed, press the EXIT (LOCAL)
key. The Series 2600B will return to the default display screen.
For detailed information about error messages, see “Errors
and status messages” in the Series 2600B Reference Manual
(document number 2600BS-901-01).
Where can I get the 2400 personality script?
The 2400 personality script allows the Series 2600B instrument
to accept Model 2400 SourceMeter SCPI commands. For more
information about loading and running the 2400 personality script,
see “Model 2400 emulation” in the Series 2600B Reference
Manual (document number 2600BS-901-01). You can get this
script from the Keithley Instruments website. Go to
tek.com/keithley and search for “TSP Script for Series 2600B
SMUs to Emulate Model 2400 SMUs.”
To copy the script to the 2600B, you can use a ash drive or any
remote command interface. If you use a ash drive, it must be
formatted as a FAT or FAT32 drive.
Next steps
Refer to the Series 2600B Reference Manual (document number
2600BS-901-01) for detailed information about all features of the
instrument.
Also see tek.com/keithley for support and additional information
about the instrument.
Contact information:
Australia* 1 800 709 465
Austria 00800 2255 4835
Balkans, Israel, South Africa +41 52 675 3777
Belgium* 00800 2255 4835
Brazil +55 (11) 3759 7627
Canada 1 800 833 9200
Central East Europe / Baltics +41 52 675 3777
Central Europe / Greece +41 52 675 3777
Denmark +45 80 88 1401
Finland +41 52 675 3777
France* 00800 2255 4835
Germany* 00800 2255 4835
Hong Kong 400 820 5835
India 000 800 650 1835
Indonesia 007 803 601 5249
Italy 00800 2255 4835
Japan 81 (3) 6714 3086
Luxembourg +41 52 675 3777
Malaysia 1 800 22 55835
Mexico, Central / South America,
Caribbean 52 (55) 56 04 50 90
Middle East, Asia,
North Africa +41 52 675 3777
The Netherlands* 00800 2255 4835
New Zealand 0800 800 238
Norway 800 16098
People’s Republic of China 400 820 5835
Philippines 1 800 1601 0077
Poland +41 52 675 3777
Portugal 80 08 12370
Republic of Korea +82 2 565 1455
Russia / CIS +7 (495) 6647564
Singapore 800 6011 473
South Africa +41 52 675 3777
Spain* 00800 2255 4835
Sweden* 00800 2255 4835
Switzerland* 00800 2255 4835
Taiwan 886 (2) 2656 6688
Thailand 1 800 011 931
United Kingdom / Ireland 00800 2255 4835
USA 1 800 833 9200
Vietnam 12060128
Find more valuable resources at TEK.COM
Copyright © 2018, Tektronix. All rights reserved.
Tektronix products are covered by U.S. and
foreign patents, issued and pending. Information
in this publication supersedes that in all
previously published material. Specication and
price change privileges reserved. TEKTRONIX
and TEK are registered trademarks of Tektronix,
Inc. All other trade names referenced are the
service marks, trademarks, or registered
trademarks of their respective companies.
* European toll-free number.
If not accessible, call: +41 52 675 3777
2636B-903-01 Rev. D / January 2019
*P2636B-903-01D*
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