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 Monitor load currents from
100nA to 6A with high accuracy
•t Measure voltage and current
with 6½-digit resolution
•t Capture dynamic load currents
as short as 140µs
•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
•t 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-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 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, making it possible to characterize and test the current draw at each of the start-up states.
Delay

Measure

Delay

Measure

•t Digital I/O for direct
communication with other
devices and instruments
•t GPIB, USB, and LAN interfaces
•t Built-in web page simplifies
automated control/monitoring
•t Automate tests easily with
KickStart start-up software

Precision measurement, low noise, programmable DC power supplies

Precision Measurement, Low Noise,
Programmable DC Power Supplies

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

DC POWER SUPPLIES

Precision measurement, low noise, programmable DC power supplies

Series 2280S