Rev. 11/10/00
55
RS-232
Now, EIA/TIA 232E. An electrical
and mechanical standard for digital
serial information transfers between
computers, computer peripherals, or
communications equipment.
short
A very low resistance or impedance
path between two or more
conductors, such as, bare wires
touching each other.
signal
An electrical or any other fluctuation
or quantity that conveys an impulse
for voice, data, or video messaging.
sine
The trigonometric function that for an
acute angle is the ratio between the
side opposite the angle when it is
considered part of a right triangle and
the hypotenuse.
sine wave
A wave form that represents periodic
oscillations in which the amplitude of
displacement at each point is
proportional to the sine of the phase
angle of the displacement and that is
visualized as a sine curve.
single mode optical fiber
A step-index optical fiber with a
small diameter core which has greater
information capacity than multi-mode
fiber.
split
When an input signal is distributed to
several outputs.
Spit Pair
A splicing error between two pairs of
wire where the wire on one pair is
connected to the wire of the other
pair.
splitter
A circuit or device that distributes an
input signal to several outputs.
step TDR
A Time Domain Reflectometer that
provides ultra high resolution for
broadband networks.
strand hooks
Hooks that are attached to hand held
equipment which are use to hang
from stranded cable or tool belt.
subscriber
The end user.
switched network
A multi-point network that has
switching capabilities.
T1
1.544 Mbps service.
T2
6.3 Mbps service.
tag
A number or other label identifying a
cable, cable pair, or pole. A flattened
brass pin on a terminal block used for
wire termination by soldering or
wrapping.
talk battery
Direct current (dc) that is supplied by
the central office to the subscriber to
operate the telephone set transmitter.
tap
A branch or intermediate circuit in a
communications system.
T-carrier
A system whereby multiple
intelligent electrical channels are
modulated and transmitted over a
single higher carrier wave then
recovered at the receiving end by
demodulation.
