User's Manual

FLEXCOMM II
C-5000 (P-25 Capable)
Operator’s Manual
OTAR – Acro
nym for “Over The Air Re-key”. Method by which the Encryption Key is transmitted over the
radio channel, hence “over the air”.
P-25 – Digital Modulation Standard.
Page – The contents of the display, sometimes called a screen or view.
PL – Acronym for “Private Line”, also known as CTCSS or sub-audible tone.
Preset Channel – A channel that has been programmed into the memory of a control head or
transceiver.
Private – Another name for encryption.
Repeat – This mode of operation uses a ground or air based repeater to retransmit your signal to another
radio. TX and RX frequencies are different.
RP - Acronym for “Remote Programmer”. Cobham’s software to program the C-5000 with channel
information via a connector of the front of the C-5000 is called the RP Software. It is recommended that
this method is used whenever possible to program the C-5000 memory. While front panel programming is
available for emergencies, using the RP software is less prone to operator errors and automatically
provides for memory backup in case of control head failure.
CPS – Acronym for “Customer Programming Software”. A Motorola PC application used for configuring,
uploading, and downloading information into the RT-5000’s Internal Transceiver Modules.
RT System – Another way of saying Receiver/Transmitter System. Most often, the term refers to a single
transceiver. However, because the Flexcomm I transceivers can be grouped together and controlled as
one radio, it can refer to more than one transceiver. The C-5000 can control up to two RT systems.
RX – Abbreviation for “Receive”
Shadow Key – Special encryption key used to encrypt the keys received during the OTAR process.
Squelch level – Signal level at which the radio will detect a strong enough signal by the radio and audio
is allowed to go to the user.
Transceiver – A radio containing both a transmitter and a receiver, co-located in one box.
Trunking – A term used to describe a communication system that automatically assigns an available
channel to the operator. This type of system can improve channel use to the point that more
conversations are going on than channels available. There are many different Trunking systems
available. Most are proprietary to each manufacturer. In other words, systems built by different radio
manufacturers will NOT communicate with each other. Only the P25 Trunking standard guarantees
interoperability.
TX – Abbreviation for “Transmit”.
Volume – Loudness of a voice signal
Publication
No. 150-041102 Page 11 of 88
Rev E C-5000 Operators Manual