BFDX BF-P108, Руководство пользователя

Страница: 18 / 22


Configure the di
gital emergency alarm system in the “signaling system” folder
before selecting; otherwise, the default value is used (null).

“RX only” function should be disabled.
11
）
TX power

Set TX power level of the two-way radio in the channel. A user can switch
between high power and low power by long press or short press of
programmable keys (High/low power) or power (“Setting” menu).
Note:
High: used when a stronger signal is required to increase TX distance.
Low: used for short range communication and preventing TX into other
geographical groups.
12
）
TX Timeout timer(s)

TX timeout timer (TOT) is the time the two-way radio continues transmission
before transmission automatically ends. This feature can ensure that a channel
will not be exclusively occupied by any one of two-way radios. For a busy
channel, a user can set shorter TX timeout. It ranges from 15 to 495 s.
13
）
TOT key update delay (s)

Set the time after the TX TOT fails (which will terminal two-way radio TX) and
before a user is allowed for transmission again the two-way radio waits in the
channel. It ranges from 0 to 255 s.
14
）
Permission condition

Define when to allow transmitting voice or data in the channel. This feature can
prevent the two-way radio transmitting in a used channel. If the two-way radio
has different TX and RX frequencies, it monitors activity of RX frequency only.
If there is no activity in RX frequency, even though the TX frequency is used,
the two-way radio will still allow a user to use this TX frequency for
transmission.
1. Always: the two-way radio always transmits signals when
pressing PTT key.
2. Channel unoccupied: before transmission, the two-way radio
will check if there is an unoccupied channel. If the channel has