
2260B Series
www.keithley.com
Multi-Range Programmable DC Power
Supplies
Quick Start Guide
/ August 2015
071305502
A Tektronix Company
A Greater Measure of Confidence

ERRATA
Please replace the “Accessories” section on page 11 through page
13 of the quick start guide with the following replacement:
Accessories
Please check the contents before using the 2260B.
2260B-30/80 Accessories
Test Leads x1(10AWG, Max. 45A,
Max.600V)
Basic Accessories Kit:(360W, 720W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom)
Basic Accessories Kit:(1080W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief
CD-R 2260B Manuals & Drivers
Calibration of Traceable Certificate

Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
Basic Accessory Kit:
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief
Cable for 2 units in Series connection.
Cable for 2 units in Parallel connection.
Cable for 3 units in Parallel connection.

2260B-250/800 Accessories
Test Leads x1(20AWG, Max. 9A, Max.
3kV)
Basic Accessories Kit: (360W, 720W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal
Basic Accessories Kit: (1080W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
CD-R 2260B Manuals & Drivers
Calibration of Traceable Certificate

Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
Contact Removal Tool
2260-005
Cable for 2 units in Series connection.
Parallel operation cable for 2 units.
Parallel operation cable for 3 units.
Test Leads (for High Voltage)
Basic Accessories Kit:
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
Extended terminal (For 250V/800V HV
models)

Multi-Range Programmable DC Power Supplies
ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent.
The information in this manual was correct at the time of printing.
However, we continue to improve products and reserves the rights to
change specification, equipment, and maintenance procedures at any
time without notice.

Table of Contents
3
Table of Contents
SAFETY INSTRUCTIONS .................................................. 4
GETTING STARTED .......................................................... 8
2260B Series Overview ........................... 8
Appearance .......................................... 15
OPERATION .................................................................. 18
Set Up .................................................. 18
Basic Operation ................................... 19
APPENDIX ..................................................................... 28
2260B Dimensions ............................... 28

2260B Series Quick Start Guide
4
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow during
operation and storage. Read the following before
any operation to insure your safety and to keep
the instrument in the best possible condition.
Safety Symbols
These safety symbols may appear in this manual or on the
instrument.
Warning: Identifies conditions or practices that
could result in injury or loss of life.
Caution: Identifies conditions or practices that
could result in damage to the 2260B or to other
properties.
Attention Refer to the Manual
Protective Conductor Terminal

Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased.
General
Guideline
CAUTION
Do not place any heavy object on the 2260B.
Avoid severe impact or rough handling that
leads to damaging the 2260B.
Do not discharge static electricity to the 2260B.
Use only mating connectors, not bare wires, for
the terminals.
Do not block the cooling fan opening.
Do not disassemble the 2260B unless you are
qualified.
(Measurement categories) EN 61010-1:2010 and EN 61010-2-030
specify the measurement categories and their requirements as
follows. The 2260B falls under category II.
Measurement category IV is for measurement performed at the
source of low-voltage installation.
Measurement category III is for measurement performed in the
building installation.
Measurement category II is for measurement performed on the
circuits directly connected to the low voltage installation.
0 is for measurements performed on circuits not directly
connected to Mains.
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
Disconnect the power cord before cleaning.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid.
Do not use chemicals containing harsh material
such as benzene, toluene, xylene, and acetone.

2260B Series Quick Start Guide
6
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
Relative Humidity: 20%~ 85%
Altitude: < 2000m
Temperature: 0°C to 50°C
(Pollution Degree) EN 61010-1:2010 and EN 61010-2-030 specify the
pollution degrees and their requirements as follows. The 2260B falls
under degree 2.
Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.
Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.
Location: Indoor
Temperature: -25°C to 70°C
Relative Humidity: <90%, no condensation
Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.

SAFETY INSTRUCTIONS
7
Power cord for the United Kingdom
When using the power supply in the United Kingdom, make sure
the power cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the
following code:
As the colours of the wires in main leads may not correspond with
the coloured marking identified in your plug/appliance, proceed
as follows:
The wire which is coloured Green & Yellow must be connected to
the Earth terminal marked with either the letter E, the earth symbol
or coloured Green/Green & Yellow.
The wire which is coloured Blue must be connected to the terminal
which is marked with the letter N or coloured Blue or Black.
The wire which is coloured Brown must be connected to the
terminal marked with the letter L or P or coloured Brown or Red.
If in doubt, consult the instructions provided with the equipment
or contact the supplier.
This cable/appliance should be protected by a suitably rated and
approved HBC mains fuse: refer to the rating information on the
equipment and/or user instructions for details. As a guide, a cable
of 0.75mm2 should be protected by a 3A or 5A fuse. Larger
conductors would normally require 13A types, depending on the
connection method used.
Any exposed wiring from a cable, plug or connection that is
engaged in a live socket is extremely hazardous. If a cable or plug is
deemed hazardous, turn off the mains power and remove the cable,
any fuses and fuse assemblies. All hazardous wiring must be
immediately destroyed and replaced in accordance to the above
standard.

2260B Series Quick Start Guide
8
GETTING STARTED
This chapter describes the power supply in a
nutshell, including its main features and front /
rear panel introduction. After going through the
overview, please read the theory of operation to
become familiar with the operating modes,
protection modes and other safety considerations.
2260B Series Overview
Series lineup
The 2260B series consists of 12 models, divided into 3 different
model types covering 3 power capacities: 360W models, 720W
models and 1080W models.
Throughout the user manual, 2260B-30, 2260B-80,
2260B-250 or 2260B-800 will refer to any of the
2260B models with a maximum voltage rating of
30V, 80V, 250V or 800V, respectively.

Apart from the differences in output, each unit differs in size. The
720W and 1080W models are larger than the 360W models to
accommodate the increase in power.

2260B Series Quick Start Guide
10
Main Features
High performance/power
Power efficient switching type power supply
Low impact on load devices
Fast transient recovery time of 1ms
Fast output response time
OVP, OCP and OTP protection
Adjustable voltage and current slew rates
User adjustable bleeder control to quickly
dissipate the power after shutdown to safe
levels.
Extensive remote monitoring and control
options
Support for series* and parallel connections.
*(30, 80 volt models only)
Power on configuration settings.
Supports test scripts
Web server monitoring and control
Ethernet port
Analog connector for analog voltage and current
monitoring
USB host and device port

GETTING STARTED
11
Accessories
Please check the contents before using the 2260B.
2260B-30/80 Accessories
Test Leads x1(10AWG, Max. 45A,
Max.600V)
Basic Accessories Kit:(360W, 720W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom)
Basic Accessories Kit:(1080W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief
CD-R 2260B Manuals & Drivers
Calibration of Traceable Certificate

2260B Series Quick Start Guide
12
Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
Basic Accessory Kit:
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief
Cable for 2 units in Series connection.
Cable for 2 units in Parallel connection.
Cable for 3 units in Parallel connection.

GETTING STARTED
13
2260B-250/800 Accessories
Test Leads x1(20AWG, Max. 9A, Max.
3kV)
Basic Accessories Kit: (360W, 720W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal
Basic Accessories Kit: (1080W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
CD-R 2260B Manuals & Drivers
Calibration of Traceable Certificate

2260B Series Quick Start Guide
14
Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
Contact Removal Tool
2260-005
Cable for 2 units in Series connection.
Parallel operation cable for 2 units.
Parallel operation cable for 3 units.
Test Leads (for High Voltage)
Basic Accessories Kit:
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
Extended terminal (For 250V/800V HV
models)

GETTING STARTED
15
Appearance
2260B Front Panel
720W: 2260B-30-72, 80-27, 250-9, 800-2
Current
knob
Output
key
Power
switch
Voltage
knob
USB A
port
Display
Cover
panel
Function
keys
1080W: 2260B-30-108, 80-40, 250-13, 800-4
360W: 2260B-30-36,
80-13, 250-4, 800-1

2260B Series Quick Start Guide
16
Rear Panel
720W: 2260B-30-72, 80-27
Output
terminal
(+)
Fan
Output
terminal (-)
USB B
port
LAN
AC Input
Senseterminal
Analog control
connector
LAN
100 240V
1000VA MAX.
AC
47 63Hz
SER.NO. LABEL
Sense+
terminal
Chassis
ground
1080W: 2260B-30-108, 80-40
100 240VAC
1500VA MAX.
47 63Hz
LAN
LN
SER.NO. LABEL
AC Input
LAN
100 240V
47 63Hz 500VA MAX.
AC

GETTING STARTED
17
720W: 2260B-250-9, 800-2
LAN
100 240V
1000VA MAX.
AC
47 63Hz
SER.NO. LABEL
V SN.C. S V
Output
terminals +V
Fan
Chassis
ground
USB B
port
LAN
AC Input
Senseterminal
Analog control
connector
Sense+
terminal
Output
terminals -V
1080W: 2260B-250-13, 800-4
LAN
LN
SER.NO. LABEL
47 63Hz
1500VA MAX.
AC 100 240V
V VSN.C. S
LAN
100 240V
47 63Hz500VA MAX.
AC
V SN.C. S V

2260B Series Quick Start Guide
18
OPERATION
Set Up
Power Up
1. 360W or 720W models:
Connect the power cord to
the rear panel socket.
1080W models: Connect
the power cord to the
universal power input.
2. Press the POWER key. If used for the first time,
the default settings will appear on the display,
otherwise The 2260B recovers the state right
before the power was last turned OFF.
The power supply takes around 8 seconds to fully
turn on and shutdown.
Do not turn the power on and off quickly. Please
wait for the display to fully turn off.

OPERATION
19
Basic Operation
Setting OVP/OCP Levels
For most models the OVP level has a selectable
range of approximately* 10% to 110% of the
rated output voltage. Likewise the OCP level
for most models has a selectable range of
approximately* 10%~ 110% of the rated output
current. The OVP and OCP level is set to the
maximum by default. The OCP level can also
be turned off.
*Note that the actual setting range differs for
each model.
When one of the protection measures are on,
ALM is shown on the panel display. By
default, the power switch will turn off when
any of the protection levels are tripped.
Before setting the OVP or OCP level:
Ensure the load is not connected.
Ensure the output is set to off.

2260B Series Quick Start Guide
20
1. Press the OVP/OCP key. The
OVP/OCP key lights up.
2. The OVP setting will be displayed on the top
and the OCP setting (or OFF) will be displayed
on the bottom.
V
A
OVP Setting
OCP Setting
3. Use the Voltage knob to set the
OVP level.
4. Use the Current knob to set the
OCP level, or to turn OCP off.
5. Press OVP/OCP again to exit. The
OVP/OCP indicator will turn off.
Set F-95 (Power switch trip) to 1 (to disable the
power switch trip) or to 0 (to enable the power
switch trip) and save.

1 (Disable) or 0 (Enable)
The OVP or OCP protection can be
cleared after it has been tripped by
holding the OVP/OCP button for 2
seconds.
(Only applicable when the power
switch trip setting is disabled
[F-95 = 1])
Set to CV Mode
When setting the power supply to constant voltage mode, a current
limit must also be set to determine the crossover point. When the
current exceeds the crossover point, the mode switches to CC mode.
CC and CV mode have two selectable slew rates: High Speed
Priority and Slew Rate Priority. High Speed Priority will use the
fastest slew rate for the instrument while Slew Rate Priority will
use a user-configured slew rate.
Before setting the power supply to CV mode,
ensure:
The output is off.
The load is connected.
1. Press the Function key. The
Function key will light up.
2. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
3. Rotate the Voltage knob to change
the F setting to F-03 (V-I Mode
Slew Rate Select).

2260B Series Quick Start Guide
22
4. Use the Current knob to set the F-
03 setting.
Set F-03 to 0 (CV High Speed
Priority) or 2 (CV Slew Rate
Priority).
0 = CV High Speed Priority
2 = CV Slew Rate Priority
5. Press the Voltage knob to save the
configuration setting. ConF will be
displayed when successful.
6. If CV Slew Rate Priority was chosen as the
operating mode, repeat steps 3~5 to set F-04
(Rising Voltage Slew Rate) and the F-05
(Falling Voltage Slew Rate) and save.
0.1V/s~60V/s (2260B-30-XX)
0.1V/s~160V/s (2260B-80-XX)
0.1V/s~500.0V/s (2260B-250-XX)
1V/s~1600V/s (2260B-800-XX)
7. Press the Function key again to
exit the configuration settings.
The function key light will turn
off.
8. Use the Current knob to set the
current limit (crossover point).

9. Use the Voltage knob to set the
voltage.
Notice the Set key becomes illuminated when
setting the current or voltage. If the Voltage or
Current knobs are unresponsive, press the Set key
first.
10. Press the Output key. The Output
key becomes illuminated.
C V
% W
V
A
CV and the Power Bar
will become illuminated
(top left & center)
20 40 60 80 100 % W
Only the voltage level can be altered when the
output is on. The current level can only be
changed by pressing the Set key.

2260B Series Quick Start Guide
24
Set to CC Mode
When setting the power supply to constant current mode, a voltage
limit must also be set to determine the crossover point. When the
voltage exceeds the crossover point, the mode switches to CV mode.
CC and CV mode have two selectable slew rates: High Speed
Priority and Slew Rate Priority. High Speed Priority will use the
fastest slew rate for the instrument while Slew Rate Priority will
use a user-configured slew rate.
Before setting the power supply to
CC mode, ensure:
The output is off.
The load is connected.
1. Press the Function key. The
Function key will light up.
2. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
3. Rotate the Voltage knob to change
the F setting to F-03 (V-I Mode
Slew Rate Select).
4. Use the Current knob to set the F-
03 setting.
Set F-03 to 1 (CC High Speed
Priority) or 3 (CC Slew Rate
Priority) and save.
1 = CC High Speed Priority
3 = CC Slew Rate Priority

5. Press the Voltage knob to save the
configuration setting. ConF will be
displayed when successful.
6. If CC Slew Rate Priority was chosen as the
operating mode, set F-06 (Rising Current Slew
Rate) and F-07 (Falling Current Slew Rate) and
save.
0.01A/s~72.00A/s (2260B-30-36)
0.1A/s~144.0A/s (2260B-30-72)
0.1A/s~216.0A/s (2260B-30-108)
0.01A/s~27.00A/s (2260B-80-13)
0.01A/s~54.00A/s (2260B-80-27)
0.01A/s~81.00A/s (2260B-80-40)
0.001A/s~9.000A/s (2260B-250-4)
0.01A/s~18.00A/s (2260B-250-9)
0.01A/s~27.00A/s (2260B-250-13)
0.001A/s~2.880A/s (2260B-800-1)
0.001A/s~5.760A/s (2260B-800-2)
0.001A/s~8.640A/s (2260B-800-4)
7. Press the Function key again to
exit the configuration settings.
The function key light will turn
off.
8. Use the Voltage knob to set the
voltage limit (crossover point).

2260B Series Quick Start Guide
26
9. Use the Current knob to set the
current.
Notice the Set key becomes illuminated when
setting the current or voltage. If the Voltage or
Current knobs are unresponsive, press the Set key
first.
10. Press the Output key. The Output
key becomes illuminated.
% W
V
A
C C
% W
20 40 60 80 100
CC and the Power Bar
will become illuminated
(bottom left & center)
Only the current level can be altered when the
output is on. The voltage level can only be
changed by pressing the Set key.

OPERATION
27
Display Modes
The 2260B power supplies allow you to view the output in three
different modes: voltage and current, voltage and power or current
and power.
1. Press the PWR/DSPL key. The
PWR DSPL key lights up.
2. The display changes to voltage and power
(V/W).
3. To switch between displaying A/W and V/W,
simply press the corresponding Voltage or
Current knob.
For example: when in A/W mode, press the
Voltage knob to display V/W. Conversely
when in V/W mode, press the Current knob to
display A/W.
When V/W is displayed, the Voltage knob
can still be used to change the voltage level.
When A/W is displayed, the Current knob
can still be used to change the current level.
Press the PWR/DSPL key again to
return to normal display mode.
The PWR DSPL light will turn off.

2260B Series Quick Start Guide
28
APPENDIX
2260B Dimensions
360W
2260B-80-13/2260B-30-36 (scale: mm)
33.8
18
12.6
123.8
268
31
333.3
332.5
37.8
10.9
10.9
47.5
14.5
30.5
39.5
19.8
39.7
16.3
Ø
8
M4

APPENDIX
29
360W
2260B-250-4/2260B-800-1 (scale: mm)
59.9
333.3
18
33.8
31
268
12.6
123.8
70.8
82.8
24
46
⌀19.7
⌀15.4
11.4
20.16
97.8
30.48
3.81

2260B Series Quick Start Guide
30
720W
2260B-80-27/2260B-30-72 (scale: mm)
18
268
31
12.6
123.8
33.8
21
333.3
332.5
70.9
21
278
28
21
18
16.3
37.8
19.8
10.9
39.7
10.9
14.5
30.5
39.5
47.5

APPENDIX
31
720W
2260B-250-9/2260B-800-2 (scale: mm)
33.5
333.3
123.8
131.6
12.6
31
268
21
278
30.48
91.16
97.8
82.43.81
21
18
141.8
70.9
82.8 24
130.9
28
99.6
⌀15.4
⌀19.7

2260B Series Quick Start Guide
32
1080W
2260B-80-40/2260B-30-108 (scale: mm)
106.4
211821
278
18
21
33.8
332.5
333.3
123.8
12.6
31
273
47.5
39.5
30.5
14.5
87.3 37.8
10.9
10.9110.7
90.8

APPENDIX
33
1080W
2260B-250-13/2260B-800-4 (scale: mm)
91.16
18
21
28
12.6
123.8
31 237
33.8
333.3
212.8
106.4
131.6
160.6
82.8 24
201.9
⌀19.7
⌀15.4
27821
82.42
97.8
30.48
3.81

2260B Series Quick Start Guide
34
Declaration of Conformity
We declare that the below mentioned product
Type of Product: Multi-Range DC Power Supply
Model Number: 2260B-30-36, 2260B-80-13, 2260B-30-72, 2260B-80-27, 2260B-
30-108, 2260B-80-40, 2260B-250-4, 2260B-800-1, 2260B-250-9, 2260B-800-2,
2260B-250-13, 2260B-800-4
are herewith confirmed to comply with the requirements set out in the
Council Directive on the Approximation of the Law of Member States
relating to Electromagnetic Compatibility (2004/108/EC) and Low Voltage
Directive (2006/95/EC).
For the evaluation regarding the Electromagnetic Compatibility and Low
Voltage Directive, the following standards were applied:
EN 61326-1:
EN 61326-2-1:
Electrical equipment for measurement, control
and laboratory use –– EMC requirements (2013)
Conducted & Radiated Emission
EN 55011: 2009+A1:2010
Electrostatic Discharge
EN 61000-4-2: 2009
Current Harmonics
EN 61000-3-2:
2006+A1: 2009+A2: 2009
Radiated Immunity
EN 61000-4-3:
2006+A1:2008+A2:2010
Voltage Fluctuations
EN 61000-3-3: 2008
Electrical Fast Transients
EN 61000-4-4: 2012
-------------------------
Surge Immunity
EN 61000-4-5: 2006
-------------------------
Conducted Susceptibility
EN 61000-4-6: 2009
-------------------------
Power Frequency Magnetic Field
EN 61000-4-8: 2010
-------------------------
Voltage Dip/ Interruption
EN 61000-4-11: 2004
Low Voltage Equipment Directive 2006/95/EC
EN 61010-1: 2010
EN 61010-2-030: 2010

Specifications are subject to change without notice.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc.
All other trademarks and trade names are the property of their respective companies.
Keithley Instruments, Inc.
Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-888-KEITHLEY • www.keithley.com
A Tektronix Company
A Greater Measure of Confidence
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12