Series 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies
A choice of front or rear panel terminals provides
Optimized Performance for
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.
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 “measurement
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, 16 ms at 60 Hz (20 ms at
50 Hz), to 33 μs (40 μs). Furthermore, the Series 2280S
supplies can sink up to 0.45 A. Thus, these supplies
can quickly discharge a voltage level and change to a
different voltage.
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.
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).
TEK.COM
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