Tait TB9300, Installation And Operation Manual, Page: 126 / 138

126 Glossary
TB9300 Installation and Operation Manual
© Tait Limited March 2016
feature code
The alphanumeric code used to identify a feature set.
feature set
A function or mode of operation of the base station which can be enabled
or disabled using the web interface. Each feature set requires a license to
be purchased from Tait before it can be enabled.
feature license key
The unique set of digits belonging to a license which is programmed into
the base station to enable a feature set.
fill-in receiver
An additional receiver placed within the coverage area of a base station to
receive MS transmissions that are too weak to be received by that base
station.
FLASH
Electrically block-erasable and programmable read-only memory.
FM
Frequency Modulation. Often used as an adjective to denote analog radio
transmission.
frequency band
The range of frequencies that the equipment is capable of operating on.
front panel
The cover over the front of the base station containing the indicator LEDs,
four-line LCD display, user controls and cooling fans.
gating
The process of opening and closing the receiver gate. When a valid signal
is received, the receiver gate opens, letting the signal through.
group call
A call that is sent to more than one MS simultaneously.
heartbeat message
A message whose purpose is to indicate to the receiver that the sender is
operational.
hiccup mode
Many power supplies switch off in the event of a short-circuit and try to
start again after a short time (usually after a few seconds). This “hiccup”-
type of switching off and on is repeated until the problem is eliminated.
hostname
The unique name by which a network element is known on the network.
hub
A unit for connecting hosts together. It sends all incoming Ethernet packets
to all the other hosts.
hysteresis
The difference between the upper and lower trigger points. For example,
the receiver unmutes when the upper trigger point is reached, but will mute
again until the level falls to the lower trigger point. An adequate hysteresis