E.F. Johnson Company 53SL ES Series, Руководство по эксплуатации

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5-4 53SL ES Series Mobile Radio Operating Manual April 2009
Time-Out Timer Section 5 - Radio Wide Features
To exit menu mode on the standard control head, press < F6 > ( <F5> for Lightning head).
To exit menu mode on the HHC, press < F5 >.
5.3 Time-Out Timer
The time-out timer disables the transmitter if it is keyed for longer than the programmed
time. It can be programmed on each channel for times of 15 seconds to 3 minutes, 45
seconds or it can be disabled.
If the transmitter is keyed continuously for longer than the programmed time, the
transmitter is disabled, a continuous tone sounds, and “TX TIMEOUT” is displayed. Five
seconds before time-out occurs, a warning beep sounds to indicate that time-out is
approaching. The timer and tone are reset by releasing the PTT switch.
A different time can be programmed for each system, and the timer can be enabled or
disabled on each conventional channel. With conventional channels, a penalty time can
also be programmed that prevents further transmissions for a certain time after the
transmitter is disabled (see Section 6.5).
One use of this feature is to prevent a channel from being kept busy for an extended period
by an accidentally keyed transmitter. It can also prevent possible transmitter damage
caused by transmitting for an excessively long period.
5.4 Home Channel Select
If the HOME option switch is programmed, pressing it selects the preprogrammed home
channel. This provides a quick way of returning to a frequently used channel. Pressing and
holding this switch until a tone sounds makes the currently selected channel the new
Home. (The radio can be programmed to ignore this press-and-hold function). The radio is
also programmed so that either the home or last selected channel is automatically selected
when power is turned on (see Section 4.1.1). A secondary Home, Home2, may also be
programmed.
Note
The radio can be optionally programmed so that Pressing and holding the Home option
switch causes the radio to switch to the existing Home or Home 2 instead of making the
current selection the new Home.