Cisco GS7000 Installation And Operation Manual page 66

Glossary
HMS
hybrid management sublayer. A set of ANSI/SCTE standards specifying an element
management system for hybrid fiber/coaxial networks. The standards establish key
protocols for the communication of status monitoring information between elements in the
network.
I
IF
intermediate frequency. The common frequency which is mixed with the frequency of a local
oscillator to produce the outgoing radio frequency (RF) signal.
in-lb
inch-pound. A measure of torque defined by the application of one pound of force on a lever
at a point on the lever that is one inch from the pivot point.
L
LCM
local control module.
LED
light-emitting diode. An electronic device that lights up when electricity passes through it.
N
Nm
Newton meter. A measure of torque defined by the application of one Newton of force on a
lever at a point on the lever that is one meter from the pivot point. (1 Nm = 0.737561 ft-lb)
O
OIB
optical interface board.
P
PROM
programmable read-only memory. A memory chip on which data can be written only once.
Once data has been written onto a PROM, it cannot be written to again.
PS
power supply.
PWB
printed wiring board.
52 4022871 Rev C