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.
