National Instruments NI 6602 User Manual page 55

ppb
prescaling
programmed I/O
PXI
R
reflection
RG
ribbon cable
ringing
RTSI Bus
S
s
(HW) Save register
source
SOURCE
© National Instruments Corporation
parts per billion
The division of frequency of an input signal that is to be used as SOURCE
of a counter.
A data transfer method in which the CPU reads or writes data as prompted
by software.
Modular instrumentation standard based on CompactPCI developed by
National Instruments with enhancements for instrumentation.
A high-speed signal transition behaves like a wave and is reflected like a
wave at an inadequately terminated endpoint. This phenomenon is referred
to as reflection.
reserved ground. Pins that are marked RG on the I/O connector are
no-connects if you use the SH100-100-S2 shielded cable, while they are
ground pins if you use the R100100 unshielded ribbon cable.
A flat cable in which the conductors are side by side.
The oscillation of a signal about a high-voltage or low-voltage state
immediately following a transition to that state.
real-time system integration bus—the National Instruments timing bus that
connects DAQ boards directly, by means of connectors on top of the boards,
for precise synchronization of functions.
seconds
A register inside the NI-TIO ASIC that stores the result of a measurement.
In the counter context, source refers to the signal that causes the counter to
increment or decrement. In the context of signals, source refers to the
device that drives a signal.
The signal that causes the counter to increment or decrement.
G-7
Glossary
NI 660x User Manual