Tait TB8100, Руководство пользователя

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TB8100 Service Kit User’s Manual
Working with Signalling Profiles 133
In the Add or Edit Signalling Profile dialog box, Tx Timers tab, the Transmit
lockout check box enables the temporary disabling of the transmitter after a
transmission that exceeded the time limit.
The Transmit timer box specifies the time limit for transmissions. If a
transmission exceeds the time limit, the transmitter is locked out and the
conversation cannot continue. The transmitter is unable to transmit for the
length of time specified in the
Lockout duration box.
Anti-kerchunking
Anti-kerchunking discourages radio users from repeatedly pressing PTT briefly
to ascertain whether they have service or to reserve the base station for
themselves.
In the Add or Edit Signalling Profile dialog box, Tx Timers tab, the
Anti-Kerchunking check box enables this feature. If a transmission is short,
either the transmitter is not keyed up or there will be no tail timers, depending
on the option selected.
The Transmissions less than box specifies which transmissions are short;
those with a duration less than the value in the box. Anti-kerchunking is only
applied to short transmissions.
If the Will not key transmitter option is selected, short transmissions do not
key up the transmitter at all. In effect, this option lengthens the key-up time for
all radio users.
If the Will not enable tail timers option is selected, short transmissions are
transmitted but not given a tail timer. The base station becomes available to
other users quickly. The radio user hears nothing on releasing PTT and
therefore does not know whether the base station has responded.
Hang time
The hang time is the length of time at the end of each transmission when the
base station continues to transmit subaudible signalling after Tx keying has
ceased.
In the Add or Edit Signalling Profile dialog box, Tx Timers tab, the Hang time
check box enables this timer and the Duration box specifies the length of the
hang time.
Reverse tone burst
The base station can send a reverse tone burst at the end of each transmission.
This applies only to transmissions with a CTCSS tone. The reverse tone burst
consists of the same tone, but is out of phase with it. In suitable radios, this
quickly mutes the receiver.
Note: Transmissions with a DCS subtone have an equivalent: the
DCS end tone. This consists of a 134 Hz tone that lasts 180 ms and
is not configurable.
In the Add or Edit Signalling Profile dialog box, Tx Timers tab, the Reverse
tone burs t check box enables reverse tone bursts.