Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
Precision measurement, low noise, programmable DC power supplies
DC POWER SUPPLIES
The Series 2280S Precision Measurement, Low
Noise, Programmable DC Power Supplies are
much more than just sources of clean power;
they are also precision measurement instru-
ments. They can source stable, low noise voltag-
es as well as monitor load currents over a wide
dynamic range from amps to nanoamps. The
Model 2280S-32-6 can output up to 32V at up to
6A; the Model 2280S-60-3 can output up to 60V
at up to 3.2A.
Both supplies use linear regulation to ensure
low output noise and superior load current
measurement sensitivity. A high resolution color
Thin Film Transistor (TFT) screen displays a
wide range of information on measurements.
Soft-key buttons and a navigation wheel combine
with the TFT display to provide an easy-to-navigate user interface that speeds instrument setup and
operation. In addition, built-in plotting functions allow monitoring trends such as drift. These sup-
plies provide the flexibility required for both benchtop and automated test system applications. For
example, they provide a list mode, triggers, and other speed optimization functions to minimize test
time in automated testing applications.
DMM-Quality Low Current Measurements with High Resolution
Unlike conventional power supplies, Series 2280S supplies can also make measurements with up to
6½ digits of resolution. Voltage output measurements can be resolved down to 100µV. These supplies
measure load currents from 100nA to amps and can resolve down to 10nA. Four load current mea-
surement ranges (10A, 1A, 100mA, and 10mA) support measuring a device’s full load current, standby
mode current, and small sleep mode currents with DMM-quality accuracy. The high resolution allows
characterizing small changes in load currents with confidence. It also makes it possible to make a
broad range of measurements on a single range with excellent accuracy across both low and high
current values.
Measure Rapidly Changing Loads
To monitor fast-changing and pulse-like load currents properly, Series 2280S supplies offer the speed
necessary to capture load changes that occur at intervals as short as 140µs. This capability allows
designers and manufacturers of portable, battery-operated devices to monitor load currents easily in
all of a device’s operating modes so they can determine the device’s total power consumption.
This high speed measurement capability allows measuring each state of a power-up load sequence
and a power-down sequence. Measurements can be made as fast as 2500 readings per second, mak-
ing it possible to characterize and test the current draw at each of the start-up states.
Delay
Measure
Delay
Measure
Precision measurement, low noise, programmable DC power supplies
•
Monitor load currents from
100nA to 6A with high accuracy
•
Measure voltage and current
with 6½-digit resolution
•
Capture dynamic load currents
as short as 140µs
•
Output up to 192W of low
noise, linear regulated power
•
Programmable rise and fall
times eliminate voltage
overshoot and undershoot
transients
•
Built-in graphing simplifies
analyzing trends or displaying
voltage or current waveforms
•
High resolution TFT display
and soft-key/icon-based user
interface simplify power supply
operation
•
Programmable output
sequences reduce test times
•
Sink up to 0.45A to discharge
voltage quickly
•
Digital I/O for direct
communication with other
devices and instruments
•
GPIB, USB, and LAN interfaces
•
Built-in web page simplifies
automated control/monitoring
•
Automate tests easily with
KickStart start-up software
Trigger
Trigger
Figure 1. Make time-critical measurements on fast-changing or pulse-like loads. An external
trigger initiates the acquisition. Programmable delay and measure times enable measurements
at a specific time on the load current pulse.
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of Confidence
A Tektronix Company
Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
active
standby
Ordering Information
Precision measurement, low noise, programmable DC power supplies
2280S-32-6 Precision
Measurement DC
Power Supply, 32V, 6A
2280S-60-3 Precision
Measurement DC
Power Supply,
60V, 3.2A
Accessories Supplied
Quick Start Guide
KickStart Quick Start Guide
User Documentation CD
LAN Crossover Cable
Power Cord
Rear Panel Mating
Connector with Cover
sleep
External Triggers
start measurements
Measurement
Complete signals
Figure 2. Measure the start-up load currents as a device powers up.
ACCESSORIES AVAILABLE
Rear Panel Mating Connector and Cover
LAN Crossover Cable
USB Cable Type A to B, 1m (3.3 ft)
Trigger Link cable to connect 2280S digital
I/O to Trigger Link I/O on other Keithley
instruments
4299-8
Single Fixed Rack-Mount Kit
4299-9
Dual Fixed Rack-Mount Kit
4299-10
Dual Fixed Rack-Mount Kit for one 2U
Graphical Display Instrument and one
Series 26xx Instrument
4299-11
Dual Fixed Rack-Mount Kit for one 2U
Graphical Display Instrument and one
Series 24xx, Series 2000, or 2U Agilent
Instrument
KPCI-488LPA IEEE-488.2 Interface Board for the PCI Bus
KUSB-488B IEEE-488.2 USB-GPIB Interface Adapter for
USB Port with 2m (6.6 ft) cable
7007-05
Double Shielded Premium IEEE-488
Interface Cables, 0.5m (1.6 ft)
7007-1
Double Shielded Premium IEEE-488
Interface Cables, 1m (3.2 ft)
7007-2
Double Shielded Premium IEEE-488
Interface Cables, 2m (6.5 ft)
7007-3
Double Shielded Premium IEEE-488
Interface Cables, 3m (10 ft)
7007-4
Double Shielded Premium IEEE-488
Interface Cables, 4m (13 ft)
2280-001
CA-180-3A
USB-B-1
2450-TLINK
View and Control Every Parameter of the Supply for Maximum Performance
The bright, 4.3-inch TFT display shows voltage and current readings, the source settings and many
additional settings in large, easy-to-read characters. The icon-based main menu provides all the
functions users can control and program for fast access to source setup, measurement setup, display
formats, trigger options, and system settings. Menus are short, and the menu options you need are
easy to find and clearly described, so that you can set up test parameters quickly by using the naviga-
tion wheel, keypad, or soft-keys. Many set-up parameters, such as for voltage and current settings, can
be entered directly from the home screen; less complex tests don’t even require accessing the main
menu to make adjustments. Whether your test’s requirements are uncomplicated or complex, the
Series 2280S supplies provide a simple way to set up all the required parameters.
Figure 3. Adjust voltage,
current, the current range,
the measurement mode,
protection levels, and
other functions from
the home screen.
DC POWER SUPPLIES
Figure 4. Access the full
functionality of the Series
2280S supplies from the
main menu.
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of
Confidence
A Tektronix Company
Precision measurement, low noise, programmable DC power supplies
Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
Precision measurement, low noise, programmable DC power supplies
DC POWER SUPPLIES
Perform Semi-Automated Testing Right on Your Bench
Test your design over its operating voltage range automatically or study
how it responds to DC output changes by using the Series 2280S supplies’
built-in List Mode function. Create and save up to 10 lists of sequenced
voltage levels with up to 99 distinct voltages in each list. The duration of
each voltage level can be set as short as 1ms or as long as 60s. Create sim-
ple linear ramps or any custom configuration from either the front panel
or an interface bus. A single trigger will automatically execute the list once
or multiple times.
Precision measurement, low noise, programmable DC power supplies
Figure 5. Configure the readback measurements exactly the way
you need them using a Measure Sub-screen.
Controlled Rise and Fall Times Protect Devices Under Test
Are you working on a device or a system with a high in-rush current? Series
2280S supplies allow programming the voltage output’s rise time to slow
the voltage ramp and avoid voltage overshoot, which could potentially
damage the DUT. The voltage fall time can also be controlled to prevent a
fast ramp down of the output voltage. Voltage rise and fall times can be set
as slow as 10V/s or as fast as 100V/s. Small voltage transitions can be pro-
grammed to rise and fall as fast as 1000V/s.
Figure 7A. Create an output sequence using the List setup screen.
power supply
with no
slew rate control
Model 2280S
with
slew rate control
Figure 6. Programmable slew rates permit controlling voltage rise and
fall rates, preventing undesirable transients during power up
of capacitive loads.
Figure 7B. Use the list mode to step the output voltage automatically
through a series of levels. The voltages were created by the list shown
in Fig. 7A.
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of
Confidence
A Tektronix Company
Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
Precision measurement, low noise, programmable DC power supplies
Precision measurement, low noise, programmable DC power supplies
Trend Analysis and Load Current Characterization
Use the built-in graphing function to monitor the stability of the load
current or capture and display a dynamic load current. Or, use it to view
a start-up or turn-off load current. Series 2280S supplies can take mea-
surements quickly and store up to 2,500 measurement points. In addition
to displaying a voltage or current waveform or both, they can compute
statistics on the stored data. Statistical calculation options include average,
maximum, minimum, peak-peak, and standard deviation. All the informa-
tion you need is accessible through a few display menus.
Figure 10. KickStart plot with measurement table.
Figure 8. Monitor voltage, current, or both with the graphing function.
Automate a test quickly and easily with KickStart software
Set up an automated test for the Series 2280S supplies in four simple steps
with the KickStart start-up software. KickStart is available for installation
on your PC via a free download from www.keithley.com. Once the program
is open, perform these steps: create a test file, select the 2280S power sup-
ply, select the power supply application, and enter the test parameters. Run
the test, and get results without having to write a line of code. KickStart
provides both graph and spreadsheet displays. Data is saved to the test file,
and the data can be exported to data analysis programs. Or take a screen
shot of the plot for reproduction in test reports. Up to 15,000 data points
can be stored. KickStart may be all the software you ever need.
Optimized Performance for Production Test
Series 2280S supplies are as powerful in a production test system as
they are flexible on the R&D benchtop. In addition to their List Mode
function, several other Series 2280S features help minimize test time in
automated systems. For example, an external trigger input allows hardware
synchronization and control by other instruments in the test system. To
eliminate many system delays, Series 2280S supplies produce a “mea-
surement complete output” to signal the test system when the supplies
have completed their required actions. To reduce measurement time, the
reading speed can be increased by reducing the acquisition time from
power line cycle integration times, 16ms at 60 Hz (20 ms at 50 Hz), to
33µs (40µs). Furthermore, the Series 2280S supplies can sink up to 0.45A.
Thus, these supplies can quickly discharge a voltage level and change to a
different voltage.
DC POWER SUPPLIES
Figure 11. Series 2280S rear panel showing the rear output connector
with remote sense inputs, digital I/O, and the three interfaces (GPIB,
USB, and LAN).
Figure 9. KickStart DC power main screen.
A choice of front or rear panel terminals provides enhanced connection
flexibility. For maximum voltage accuracy, 4-wire remote sensing ensures
that the output voltage programmed is actually the level applied to the
load. In addition, the sense lines are monitored in order to detect any
breaks in them. These features ensure any production problems can be
quickly identified and corrected. Four additional digital I/O pins can pro-
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of
Confidence
A Tektronix Company
Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
Specifications
23°C ±5°C with 1-hour instrument warm-up.
Series 2280 specifications
SOURCE SETTING
Accuracy
Resolution
MEASUREMENT
2
(0.5V over-range)
Accuracy
Resolution
2280S-32-6
± (0.02% + 2 mV)
0.1 mV
2280S-60-3
± (0.02% + 4 mV)
0.1 mV
2280S-32-6
± (0.02% + 3 mV)
1 mV
2280S-60-3
± (0.02% + 6 mV)
1 mV
To facilitate production test software develop-
ment, native National Instruments LabVIEW™
drivers, IVI-C and IVI-COM drivers are available
on the Keithley website, www.keithley.com.
ADDITIONAL OFFSET AT FASTER MEASUREMENT SETTINGS
2280S-32-6
0.21 mV
5½ (0.1 PLC)
1.44 mV
4½ (0.01 PLC)
7.60 mV
3½ (0.002 PLC)
REGULATION
Load
Line
OUTPUT RIPPLE AND NOISE
Bandwidth 20Hz–20MHz
2280S-32-6
< 1mV
RMS
< 5mV p-p
2280S-32-6
±(0.01% + 2 mV)
±(0.01% + 1 mV)
2280S-60-3
0.40 mV
2.7 mV
14.25 mV
2280S-60-3
±(0.01% + 2 mV)
±(0.01% + 1 mV)
2280S-60-3
< 2mV
RMS
< 7mV p-p
LOAD TRANSIENT RECOVERY TIME: Resistive load change 50% load to 100% load or 100% load to 50% load:
<50µs to within
15mV of V-set.
SLEW RATE: Rising voltage and falling voltage:
10V/s to 100V/s. Up to 1000V/s under limited conditions
3
. 100V/s (default).
MAXIMUM SOURCE VOLTAGE DROP PER LEAD: To maintain specified voltage accuracy:
1V.
MAXIMUM SENSE HI AND SENSE LO LEAD RESISTANCE: To maintain specified voltage accuracy:
2Ω.
CURRENT
CURRENT LIMIT SETTING
Full-scale Amps
Accuracy
Resolution
MEASUREMENT
4
(120% over-range except 10A)
Range
10 mA
100 mA
1 A
10 A
Resolution
10 nA
100 nA
1 µA
10 µA
2280S-32-6
±(0.05% + 10 µA)
±(0.05% + 10 µA)
±(0.05% + 250 µA)
±(0.05% + 250 µA)
2280S-60-3
±(0.05% + 10 µA)
±(0.05% + 10 µA)
±(0.05% + 250 µA)
±(0.05% + 250 µA)
2280S-32-6
6A
±(0.05% + 5 mA)
0.1 mA
2280S-60-3
3.2 A
±(0.05% + 5 mA)
0.1 mA
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of
Confidence
A Tektronix Company
DC POWER SUPPLIES
Series 2280S specifications
vide fault status outputs or control an external
relay or status lamp. Series 2280S supplies can
be controlled via their built-in GPIB, USB, or
LAN interfaces. The USB interface is test and
measurement system (TMC) compliant. The LXI
Core compliant LAN interface supports con-
trolling and monitoring a Series 2280S supply
remotely, so test engineers can always access
the power supply and view measurements, even
if they’re located on a different continent than
their test systems.
DC OUTPUT RATINGS
Voltage
Current
Maximum Power
2280S-32-6
0 to 32 V
0 to 6 A
192 W
2280S-60-3
0 to 60 V
0 to 3.2 A
192 W
VOLTAGE
1
stm32/stm8
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