Keithley 2308, Руководство пользователя

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2308-900-01 Rev. A / July 2008 Return to Section Topics 2-5
Model 2308 Portable Device Battery/Charger Simulator User’s Manual Section 2: Basic Power Supply Operation
Figure 2-3
Charger channel 4-wire remote sense connection from the DUT to the ouput
Remote sense
As shown in Figure 2-1 the Model 2308 battery and charger channels are intended to be operated
with remote sense leads (4 wire connection). The Sense+ and Sense- pins provide output voltage
sensing. Without these terminals connected, the power supply operates without voltage feedback
and therefore supplies an unregulated voltage. This unregulated voltage value can be up to +18 V
or down to -5 V. Use voltage protection to turn off the output and protect against the extremes
(refer to
Setting voltage protection value ).
Connect the sense inputs to the supply as close as possible to the load’s source inputs through
twisted pair leads (refer to
Figure 2-1 ). This is necessary to achieve the maximum transient
performance of the supply.
Local sense
The Model 2308 battery and charger channels can be connected to operate with local sense leads
(2-wire connection) as shown in
Figure 2-4 . In this connection scheme, the sense inputs and
supply outputs are connected at the rear of the supply.
NOTE
Twist Source leads together and twist Sense leads together for
optimum performance.
CAUTION
Do NOT connect the sense inputs and supply outputs at the rear of the supply!
Connecting the sense leads in this fashion will severely compromise the
performance of Model 2308 with dynamic loads when using 4-wire sense.
External Test Circuit
Quick Disconnect
Connector
Model 2308
Source Input/Output
DVM Input
DUT
+
-
DVM +
DVM -
Source -
Source -
Sense -
Sense +
Twisted Pair