Specifications

134 Glossary
at a certain predetermined voltage.
Multiplex
A more restricted version of a matrix. Any row relay can be connected to any column but only one can
be connected at a time.
Multiplexed Detectors And Sources
This consists of the E6171A Measurement Control Module, the 32- Pin Switching Cards, and assorted
GPIB or VXIbus based instruments and detectors. The Measurement Control Module switches the
various instruments into and out of the test circuits as necessary to perform the appropriate
measurements with each clock cycle of a test.
MXIbus
Multiple-VXIbus extender. MXIbus modules which allow addressing more than one VXI mainframe in
a system.
N
NC
Normally Closed switch contacts. A Form C (Single-Pole, Double-Throw) switch has two possible
states. The default or unpowered, state is its “normal” state. The two terminals on the switch are therefore
called “normally open,” or “normally closed.”
NO
Normally Open switch contacts. See NC.
Node
Any electrical point in the topology. Each node has a name, or label. See alias.
O
OAR
See Open All Relays.
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