Appendix I Glossary -141210119

APPENDIX I

GLOSSARY

COMPONENT PARTS Individual units of a sub-

ALARM ACKNOWLEDGE Push button that must

be depressed to silence an alarm horn.

assembly.

ALARM LOG Record of quantities that are in an

COMPONENTS Any electrical device, such as a coil,

alarm condition only.

resistor, transistor, and so forth.

ANALOG DATA Data represented in continuous

COMPUTER A data processor that can perform sub-

form, as contrasted with digital data having discrete

stantial computation, including numerous arith-

values.

metic or logic operations, without the intervention

by a human operator during the run.

AND GATE (1) An electronic gate whose output is

energized only when every input is in its prescribed

CONDITION State of being of a device, such as ON-

state. An AND gate performs the function of the

OFF, GO-NO GO, and SO forth.

logical "AND"; also called an AND circuit. (2) A

CONTINUOUS DISPLAY Electrical instrument

binary circuit, with two or more inputs and a single

giving a continuous indication of a measured

output, in which the output is a logic 1 only when

quantity.

all inputs are a logic 1 and the output is a logic 0

when any one of the inputs is a logic 0.

CONTROL MODE Method of system control at a

given time.

ANNUNCIATOR A device that gives an audible and

a visual indication of an alarm condition.

CONTROL POWER Power used to control or operate

ASSEMBLY A number of parts or subassemblies, or

a component.

any combination thereof, joined together to perform

CONTROL TRANSMITTER (CX) A type of

a specific function.

synchro that converts a mechanical input, which is

BELL LOG A printed record of changes in the ship's

the angular position of its rotor, into an electrical

operative conditions, such as speed or point of

output signal. The output is taken from the stator

control.

windings and is used to drive either a CDX or CT.

BINARY UNIT One of the two possible alternatives,

CONTROL TRANSFORMER (CT) A type of

such as 1 or 0, YES or NO, ON or OFF.

synchro that compares two signals: the electrical

BLOCK DIAGRAM Drawing of a system using

signal applied to its stator and the mechanical signal

blocks for components to show the relationship of

applied to its rotor. The output is an electrical volt-

components.

age, which is taken from the rotor winding and is

used to control a power-amplifying device. The

C A L I B R A T I O N ACTIONS The number of

phase and amplitude of the output voltage depends

calibrations performed by the related calibration

on the angular position of the rotor with respect to

activity (laboratory) during the reporting period.

the magnetic field of the stator.

CARD See PRINTED CIRCUIT BOARD.

CONTROL SIGNAL Signal applied to a device that

CASUALTY An event or series of events in progress

makes corrective changes in a controlled process.

during which equipment damage and/or personnel

injury has already occurred. The nature and speed

CONTROL DIFFERENTIAL TRANSMITTER

of these events are such that proper and correct

(CDX) A type of synchro that transmits angular

procedural steps will only serve to limit equipment

information equal to the algebraic sum or difference

damage and/or personnel injury.

of the electrical input supplied to its stator, and the

mechanical input supplied to its rotor. The output is

CLOCK An instrument for measuring and indicating

an electrical voltage taken from the rotor windings.

time, such as a synchronous pulse generator.

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