Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
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Precision measurement, low noise, programmable DC power supplies
•
Measure small load currents
with 0.05% accuracy and 10nA
resolution
•
Measure voltage and current with
6½-digit resolution
•
Capture the peak of a load current
burst as short as 140µs using
external triggering or capture
load current changes using a
level threshold, sampling at 2800
readings per second
•
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
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-nav-
igate 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 Load Currents
Capture measurements with either an external control signal
or an analog level threshold crossing
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
•
GPIB, USB, and LAN interfaces
•
Built-in web page allows
automated control, monitoring, and
data logging
•
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. In addition to the digital trigger, a level threshold
setting can be used to store up to 2500 measurements at a programmed reading rate.
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of Confidence
A Tektronix Company
DC POWER SUPPLIES
•
Digital I/O for direct
communication with other devices
and instruments
Precision measurement, low noise, programmable 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 instruments. They can source stable, low
noise voltages 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.
Series 2280S
Precision Measurement, Low Noise,
Programmable DC Power Supplies
Precision measurement, low noise, programmable DC power supplies
The measurements can be captured using either of two methods. A measurement can be initiated by
a digital external control signal transmitted to the external input of the digital I/O port. In addition,
up to 2500 measurements can be stored at a sampling rate up to 2800 readings/s based upon a pro-
grammed threshold level. The user selects both the level and the slope of the signal, a rising signal
or a falling signal. The level setting can be used to store either voltage and/or current measurements
when the threshold level is crossed. When the level threshold is enabled, the supply is continuously
monitoring the level of the selected parameter and buffering the measurements. Thus pre-threshold
measurements can be saved along with the post-threshold measurements.
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
External Triggers
start measurements
Measurement
Complete signals
ACCESSORIES AVAILABLE
2280-TEST-LEAD
Power Supply Test Lead Kit, 1000V,
20A Rating
2280-001
Rear Panel Mating Connector and Cover
CA-180-3A
LAN Crossover Cable
USB-B-1
USB Cable Type A to B, 1m (3.3 ft)
2450-TLINK 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)
Figure 2. Measure the start-up load currents as a device powers up.
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
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 measure-
ments quickly and store up to 2,500 measurement points. In addition to
displaying a voltage or current waveform or both, they can compute statis-
tics on the stored data. Statistical calculation options include average, max-
imum, minimum, peak-peak, and standard deviation. All the information
you need is accessible through a few display menus.
Figure 9. Web page display of the LXI-data logging function showing
all parameters stored and the associated statistics.
Figure 8. Monitor voltage, current, or both with the graphing function.
Simple, Yet Powerful Data Logging
As well as capturing 2500 data points in the internal memory and dis-
playing it using the Series 2280S graphing function, voltage and current
measurements can be collected using the LAN interface and the Series
2280S built-in web browser. The web interface home page offers a data
logging option. Measurements can be taken over a programmed time
interval, based on a programmed number of data points, or manually using
the Start/Stop button on the webpage user interface. Using the web-based
data logger, measurements can be continuously taken over multiple days.
Figure 9
shows a web page display of the measurements, the time when
measurements were taken, and a number of status parameters. Statistics
on the logged data are displayed on the page and include maximum,
minimum, and average values. The total consumed electric chage in mil-
liamp-hours is also computed. Control buttons on the side of the display
allow control of the data logging and enable copying of either selected
rows or all the data. The data can be easily pasted into a report or a
spreadsheet for analysis. Just interface to a Series 2280S via LAN and select
the data logging option. This powerful data logging capability requires
no programming.
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 supply, 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.
Figure 10. KickStart DC power main screen.
DC POWER SUPPLIES
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
Figure 12. 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 11. KickStart plot with measurement table.
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 “meas-
urement 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 60Hz (20ms at 50Hz), 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 differ-
ent voltage.
Series 2280S Accessories
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
provide 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 controlling 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.
To facilitate production test software development, native National
Instruments LabVIEW™ drivers, IVI-C and IVI-COM drivers are available
on the Keithley website, www.keithley.com.
Model 2280-001: Rear Panel Mounting Connector and Cover
(assembled view on the left, and connector and top and bottom cover
shown separately on the right)
Model 2280-TEST-LEAD: Power Supply Test Lead Kit, 1000V, 20A Rating:
Contains 122cm (4ft) of cable, spade lug adapters, and alligator clips
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A Greater Measure of Confidence
A Tektronix Company
DC POWER SUPPLIES
Series 2280S specifications
Series 2280 specifications
Electronics Design Contest
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