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6
Using the Pin Matrix Cards
6-18
Disconnect Relays automatically disconnect unused columns to
minimize capacitive loading effects from the Analog Bus. This
makes it possible to expand the system without degrading the
accuracy of measurements.
Besides the matrix of relays, there are switched auxiliary I/O
lines (AUX) connected to each of the rows. These ports are for
digital I/O operations or other user-defined applications. For
example, you can close any of these auxiliary relays to connect a
digital sensing source (or other low-impedance system
resource) such an event detector or digital input card, to a pin
on the UUT. Because these auxiliary inputs are available on any
of the rows, and on Pin Matrix Card connectors J2 and P2, many
inputs can be connected at once.
Additional features include an integrated relay timer, the ability
to open all relays with a single bit, and series protection
resistors that can be bypassed programmatically. These features
are individually described in the following paragraphs starting
on
page
6-21.
E6198B Switch/Load Unit User Manual
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