National Instruments NI 783xR Manuel D’Utilisation

© National Instruments Corporation

RAM

Random-access memory—The generic term for the read/write memory that 
is used in computers. RAM allows bits and bytes to be written to it as well 
as read from. Various types of RAM are DRAM, EDO RAM, SRAM, and 
VRAM.

resolution

The smallest signal increment that can be detected by a measurement 
system. Resolution can be expressed in bits, in proportions, or in percent 
of full scale. For example, a system has 12-bit resolution, one part in 
4,096 resolution, and 0.0244% of full scale.

RIO

Reconfigurable I/O.

rms

Root mean square.

RSE

Referenced single-ended mode—All measurements are made with respect 
to a common reference measurement system or a ground. Also called a 
grounded measurement system.

RTSI

Real-time system integration bus—The timing and triggering bus that 
connects multiple devices directly. This allows for hardware 
synchronization across devices.

s

Seconds.

S

Samples.

S/s

Samples per second—Used to express the rate at which a DAQ board 
samples an analog signal.

signal conditioning

The manipulation of signals to prepare them for digitizing.

slew rate

The voltage rate of change as a function of time. The maximum slew rate 
of an amplifier is often a key specification to its performance. Slew rate 
limitations are first seen as distortion at higher signal frequencies.