TM 11-5841-283-34-1/NAVAIR 16-30APR39-2
GLOSSARY
The following special terms and words are used in this manual.
Alinement. A procedure for adjusting a circuit to produce a desired frequency response or
Alternating Current.
A flow of electricity which reverses in direction continuously.
Amplifier. A circuit that increases the power of a signal.
Bandwidth. A limited range of frequencies.
Calibration. A procedure for comparing a test equipment reading of a circuit to a standard and
correcting any difference from the standard.
Carrier. A wave of non-changing frequency, amplitude, and phase which is changed in amplitude or
phase by a video (or audio) signal.
Decibel.
The standard unit for expressing relative power, voltage or current.
A current that flows in only one direction and has a constant value.
Direct Current.
Filter. A circuit that allows only certain frequencies to pass.
A point on a waveform where the voltage is reduced to 70.7/0 of its peak value.
Half Power.
Hertz. A term meaning cycle per second.
Any energy or power consuming device connected to a circuit supplying power or energy.
Load.
Power Output.
The power in watts delivered to a load.
Pulse Repetition Interval (PRI). The interval, in units of t me, between the leading edges of
sequential pulses in a train.
Pulse Repetition Frequency (PRF). The number of sequential pulses in a train in a certain
interval of time.
Tangential Signal.
A noise signal raised by a dc value equal to its amplitude as shown on an
Glossary 1
Previous Page
