Specifications

DSP Same as Control Processor.
EU Engineering Units.
EU Conversion Engineering Unit Conversion: Converting binary A/D readings
(in units of A/D counts) into engineering units of voltage,
resistance, temperature, strain. These are the “built in”
conversions (see SENS:FUNC: ...). The VT1419A also
provides access to custom EU conversions (see
SENS:FUNC:CUST in command reference and “Creating and
Loading Custom EU Tables” in Chapter 3).
FIFO The First-In-First-OUT buffer that provides output buffering
for data sent from an algorithm to an application program.
Flash or
Flash Memory
Non-volatile semiconductor memory used by the VT1419A to
store its control firmware and calibration constants.
Scan List A list of up to 64 channels that is built by the VT1419A.
Channels referenced in algorithms are placed in the Scan List
as the algorithm is defined. This list will be scanned each time
the module is triggered.
SCP Signal Conditioning Plug-On: Small circuit boards that plug
onto the VT1419A’s main circuit board. Available analog input
SCPs can provide noise canceling filters, signal amplifiers,
signal attenuators and strain bridge completion. Analog output
SCPs are available to provide measurement excitation current,
controlling voltage and controlling current. Digital SCPs are
available to both read and write digital states, read frequency
and counts and output modulated pulse signals (FM and
PWM).
Swapping This term applies to algorithms that are enabled to swap. These
algorithms can be exchanged with another of the same name
while the original is running. The “new” algorithm becomes
active after an update command is sent. This “new” algorithm
may again be swapped with another and so on. This capability
allows changing algorithm operation without stopping and
leaving this and perhaps other processes without control.
Terminal Blocks The screw-terminal blocks the system field wiring is connected
to. The terminal blocks are inside the Terminal Module.
Terminal Module The plastic encased module which contains the terminal blocks
the field wiring is connected to. The Terminal Module then is
plugged into the VT1419A’s front panel.
Glossary
368 Appendix C
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