66 Functional Description TB8100 Installation and Operation Manual
© Tait Electronics Limited June 2005
The recommendations for noisy sites have the following effects.
■ A high RSSI level means that the base station rarely wastes power by
holding the receiver on to check the SINAD. (This may mean that users
find it more difficult to gain access to the site. However, once they have
access and the base station is in Normal mode, the relatively low SINAD
makes access easy.)
■ Receiver cycling in Normal mode is not selected so that the higher RSSI
level is not required in order to open the gate.
■ The ‘OR’ setting for gating logic provides optimal gating when the base
station is in Normal mode: quick opening when the signal is strong,
reliable opening when it is weaker.
■ Short idle times maximise the proportion of time that the base station is
in Sleep and Deep Sleep modes.
Note If the base station is part of a CTCSS/DCS system, the base station
will use additional power whenever it hears a signal with the
wrong subtone. For example, if the receiver has the same settings
as above, it would be on for 320ms out of every 420ms (a subau-
dible check can take up to 230ms). The only way to minimise the
effects of this is to set a very long receiver cycling time, such as 5
seconds.
To Next Page
Loading...
