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Built-in digital voltmeter
Maximize Test Throughput with Accurate Battery Simulation
The battery-output channels of the Models 2302 and 2306 are designed to simulate the output response
of a battery.
This capability, combined with their fast transient response, makes it possible to power the
device during testing in exactly the same way as a battery will power the device during actual use.
The
output resistance of the Model 2302鈥檚 and the Model 2306鈥檚 battery channel can be programmed (with
10m鈩?resolution) over the range from 0鈩?to 1鈩?so that the output resistance can be set to the same
level as the output resistance of the battery that powers the device.
Portable wireless devices make great demands on their battery power sources. The battery must source
load currents that can jump virtually instantaneously from a standby current level (100鈥?00mA) to a full-
power RF transmission current level (1鈥?A). In other words, the load current on the battery can increase
rapidly by a factor of 700鈥?000%. As a result, the battery voltage drops by an amount equal to the value of
the current change multiplied by the battery鈥檚 internal resistance. The Models 2302 and 2306 power sup-
plies enable test systems to duplicate this voltage drop by programming their output resistance to be equiv-
alent to that of the battery that will power the device. This allows wireless device manufacturers to test their
products under the same power conditions that they will encounter in actual use. (See
Figure 1.)
In response to large load changes, the Model 2302 and the battery channel of the Model 2306 have tran-
sient voltage droops of less than 100mV and transient recovery times of less than 60碌s, even when the
Figure 1. Comparison of the voltage outputs of a lithium-ion battery (with an internal resistance of
260m鈩? and the Model 2306鈥檚 battery channel (programmed with an output resistance of 260m鈩?
when powering a cellular telephone as it makes the transition from standby mode to transmit mode.
1.888.KEITHLEY
(U.S. only)
www.keithley.com
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G R E A T E R
M E A S U R E
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C O N F I D E N C E
POWER SOURCES
Fast Transient Response Power Supplies
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