3-6 E6198B Switch/Load Unit User Manual
3 Switch/Load Unit and Plug-In Cards
Open Drain Digital Output
The digital output bits use open drain drive circuitry designed
for pull-ups up to +24 Vdc. The output port FET can sink up to
250mA. Figure 3-4 shows one digital output bit controlling a
relay.
DAC Channels
The two 14-bit channels of DAC provide ±16 volts at 10 mA each.
To provide this voltage swing, a charge pump is used to step-up
the ±12 volt supply. The DAC channels are typically used for
controlling differential input, voltage-controlled power supplies.
+5Vdc, +12Vdc, -12Vdc, Spare Power
+5V, +12V and -12V from the Switch/Load Unit Power Supply.
The +5V supply can deliver 7.5A to 30A, +12V supply can deliver
2.5A to 12.5A, the -12V supply can deliver 700mA to 1A. You can
Figure 3-3 Digital Input Example
Figure 3-4 Digital Output Example
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