Datasheet

DC POWER SUPPLIES
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
A Tektronix Company
Series 2281S
Single Channel, Precision DC Power
Supply & Battery Simulator
Real battery simulation based on battery model
In the battery simulator function of the 2281S, real battery output perfor-
mance can be simulated based on a selected battery model. SOC and V
oc
can be set to any state to test the device under specific circumstance. There
are two modes from which to choose:
• Static: During the static simulation, open voltage and SOC
stays the same.
• Dynamic: During the dynamic simulation, open voltage and SOC change
according to charging and discharging like a real battery.
Capacity can also be reduced, as well, to accelerate the charging and dis-
charging process for better test efficiency.
Figure 4. Battery simulator home screen.
Figure 5. Graph of V
oc
, ESR, and SOC.
Easily View and Control Every Parameter of
the battery test and simulation function
The bright, 4.3-inch TFT display shows voltage, current, and Amp-Hour
readings, 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, measure-
ment setup, display formats, trigger options, and system settings. Menus
are short, and menu options are easy to find and clearly described,
enabling test parameters to be setup quickly by using the navigation wheel,
keypad, or soft-keys. Many setup parameters, such as voltage and current
settings, can be entered directly from the home screen; less complex tests
don’t require access to the main menu to make adjustments - just use soft
keys on the home screen. Whether test requirements are simple or com-
plex, the Series 2281S supplies provide a simple way to set up all required
parameters.
Figure 6. Battery test menu.
Optimized Performance for Production Test
Series 2281S supplies are as powerful in a production test system as they
are flexible on the R&D benchtop. They provide all SCPI commands for
all measurement functions. In addition, several other features can 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. For the battery test and battery simulator function, the
digital I/O can be configured as input or output. If the digital I/O is config-
ured as input, the measurement can be triggered by external signals; if the
digital I/O is configured as output, the digital I/O pin will send out a signal
when the measurement is finished. Furthermore, to reduce measurement
time, reading speed can be increased by reducing the acquisition time from
16.6ms (or 20ms) to 33µs (40µs).
Single channel, precision DC power supply and battery simulator Single channel, precision DC power supply and battery simulator