National Instruments PXI NI PXI-1052 - Manual (Page 65)

Glossary
NI PXI-1052 User Manual G-6 ni.com
PXI PCI eXtensions for Instrumentation. PXI is an implementation of
CompactPCI with added electrical features that meet the high performance
requirements of instrumentation applications by providing triggering, local
buses, and system clock capabilities.
PXI_CLK10 10 MHz PXI system reference clock.
R
RMS Root mean square.
S
s Seconds.
skew Deviation in signal transmission times.
slot blocker An assembly installed into an empty slot to improve the airflow in adjacent
slots.
standby The backplane is unpowered (off), but the chassis is still connected to
AC power mains.
star trigger slot This slot is located at Slot 2 and has a dedicated trigger line between each
peripheral slot. Use this slot for a module with star trigger functionality that
can provide individual triggers to all other peripherals.
system reference
clock A 10 MHz clock, also called PXI_CLK10, that is distributed to all
peripheral slots in the chassis. The system reference clock is used for
synchronization of multiple modules in a measurement or control system.
The PXI backplane specification defines implementation guidelines for
PXI_CLK10.
T
task In NI-DAQmx, a collection of one or more virtual channels with timing,
triggering, and other properties.
TTL Transistor-transistor logic.