Service Manual

SRM9000 SERIES SERVICE MANUAL

SW Software.

SYS System Identity Code part of the CCSC.

TCXO Temperature Compensated Crystal Oscillator.

Temporary Temporary Registration; a process carried out by the Dispatcher due to some

system failure that prevents it from carrying out normal registration. The radios will

recognise this temporary registration mode but will otherwise use the network in

the same way as if they were registered. They may be required to re-register when

normal registration mode is resumed.

Three Tone Reset This is a system whereby a call to a user automatically reset all other users in a

group.

Example: a call to user '12345' would call 12345 and reset all other users on this

channel with an identity 123nn where n can be any digit 0-9, A-F.

Timed Reset Facility that causes the Radio, after a certain period of time, to restore current

channel to it's initial condition e.g. if it was previously searching it will resume

searching.

Time Shared A time-shared control channel is one that is used by more than one site. This

allows a wide coverage area to be obtained using only one frequency.

The forward channel from the TSC to the radio is divided into timeslots. Each site

using the channel is allocated one timeslot in which to transmit and send

signalling.

Therefore, when on a timeshared channel. the radio may be able to receive bursts

of signalling from different sites at different signal strengths and may receive

periods when no signalling is received.

Depending on the type of system, the radio may be able to perform transactions

with any site it can receive from or only with a specific site.

TMR Trunked Mobile Radio.

Tone Burst An audio tone is transmitted at the start of transmission to inform a relay

(repeater) station to switch itself on to relay the transmission.

Transpond An Acknowledge identity sent as a response to an individual call.

TRAXYS Air Interface for the PTT Telecom Trunked Radio Network, used in the

Netherlands.

TSC Trunking Site Controller. Central control required for the Trunking System to

function. Controls base stations.

Tx Inhibit A facility which prevents the user from transmitting,(other than alarms), while the

channel is Busy.

UMP User Memory Plug. A special device that contains the customisation data for the

radio. If this is removed then this can cause the radio to behave in a number of

ways.

User Defined Groups These groups are set up by the user (contrast with Dynamic User Groups) when

the user desires to be included, temporarily, in an existing group. Up to 8 groups

may be defined (in addition to the Network group Idents defined by Network Group

Numbers). This feature is only available if User Defined Groups parameter is

enabled. These temporary groups are lost at switch off unless 'Save Groups at

Switch Off' is enabled.