Series 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies0 pages
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.
•t Measure small load currents
with 0.05% accuracy and 10nA
resolution
•t Measure voltage and current with
6½-digit resolution
•t 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
•t Output up to 192W of low noise,
linear regulated power
•t Programmable rise and fall times
eliminate voltage overshoot and
undershoot transients
•t Built-in graphing simplifies
analyzing trends or displaying
voltage or current waveforms
•t High resolution TFT display and
soft-key/icon-based user interface
simplify power supply operation
•t Programmable output sequences
reduce test times
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 supplies 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 measurement 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
Precision measurement, low noise, programmable DC power supplies
Precision Measurement, Low Noise,
Programmable DC Power Supplies
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, making it possible to characterize and test the current draw at each of the start-up states.
Delay
Measure
Delay
Measure
•t Sink up to 0.45A to discharge
voltage quickly
•t Digital I/O for direct
communication with other devices
and instruments
•t GPIB, USB, and LAN interfaces
•t Built-in web page allows
automated control, monitoring, and
data logging
•t 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
Precision measurement, low noise, programmable DC power supplies
Series 2280S
No
da enh w w
t a an i t
lo c e h
gg d
in
g