dimtel
dimtel
Glossary
input/output (I/O)
An interface for transferring analog or digital signals to or from the
device. 5, 13, 15, 31, 48, 51
input-output controller (IOC)
An embedded computer used to interface the hardware to the control
system. 5, 9–13, 15, 16, 19, 27, 28, 34, 35
Linux
A Unix-like open-source operating system. 5
low-voltage transistor-transistor logic (LVTTL)
Transistor-transistor logic with the same logic thresholds as transistor-
transistor logic (TTL). LVTTL outputs can be connected directly to
TTL inputs. TTL outputs can drive LVTTL inputs only if the latter
are 5 V tolerant. 8, 31, 36
NIM
NIM (originally an acronym for Nuclear Instrumentation Methods)
logic defines signal levels (with 50 Ω termination) of 0 V and
−
0
.
8 V
for logic 0 and 1 respectively. 6, 9, 19, 36
process variable (PV)
An individual control or readout signal in EPICS 12, 26, 34
radio frequency (RF)
In the accelerator context, a constant frequency constant amplitude
signal derived from or phase locked to the storage ring master oscillator.
5–7, 9, 13, 20, 23–25, 34, 36, 42
root mean square (RMS)
A statistical measure of the magnitude of a varying quantity. 27, 28
static random access memory (SRAM)
A type of semiconductor memory that retains its contents as long as
the power is applied. 5, 15, 19, 36, 42, 49
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