Glossary
G-6
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system reference
clock
A 10 MHz clock, also called PXI_CLK10, that is distributed to
all peripheral slots in the chassis, as well as a BNC connector
on the rear of chassis labeled
10 MHz REF OUT
. The system
reference clock can be used for synchronization of multiple
modules in a measurement or control system. The 10 MHz REF
IN and OUT BNC connectors on the rear of the chassis can be
used to synchronize multiple chassis to one reference clock. The
PXI backplane specification defines implementation guidelines
for PXI_CLK10.
System Timing slot
This slot is located at slot 4 and has dedicated trigger lines to
other slots.
T
TTL
Transistor-transistor logic.
U
UL
Underwriter’s Laboratories.
V
V
Volts.
VAC
Volts alternating current.
V
pp
Peak-to-peak voltage.
W
W
Watts.
