44 TA2922 Universal Line Interface Service Manual
© Tait Electronics Limited March 2010
accessible to the UIS-PGM application after switching the radio power off then
back on.
Adjustable between 0.1 and 25.5 seconds
Supply Alarm
TX Beeps
When this check box is selected, voltage alarm beeps are mixed with the line in
audio to the radio transmitter, when the supply voltage falls below the Supply
Alarm Threshold.
Only During
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The supply voltage alarm beeps are only applied to the transmitter for the duration
of the TX Tail Timer. If there is no TX Tail Enable, the alarm beeps are not heard
on the radio transmission.
Supply Alarm
Pulses
IOP_GPIO3
When the supply voltage alarm is first activated by the supply voltage falling below
the Supply Alarm Threshold, a single active low pulse of 100ms duration is applied
to the IOP_GPIO3 on the radio internal option connector. This can be used in a
number of applications, or example, to send a Selcall signal to remotely indicate a
low voltage condition. The pulse is only provided once, for the duration that the
alarm is active for.
Supply Alarm
Threshold
The supply voltage alarm becomes active when the supply voltage to the radio falls
below this value.
Adjustable between 5.0 and 20.0 Volts
Note that the input supply range of the radio is 10.8V to 16V
Supply Alarm
Hysteresis
The supply voltage alarm becomes inactive once the supply voltage to the radio
rises by this value. The supply voltage must rise to a value of Supply Alarm
Threshold + Supply Alarm Hysteresis to cancel the alarm condition.
Adjustable between 0.2 and 25.5 Volts
Beep Tone Sets the frequency of the supply voltage beeps which are mixed in with the line in
audio to the radio transmitter.
Adjustable between 400 and 2000Hz
Beep
Duration
The length of each beep tone. If the Beep Duration is longer than the Beep
Frequency, the alarm tone is continuous.
Adjustable between 100 and 25500 milliseconds (0.1 to 25.5 seconds)
Beep
Frequency
How often a beep tone is repeated. For example, to generate an alarm tone of 0.4
seconds on, 0.6 seconds off, set Beep Duration to 400 and Beep Frequency to 0.6.
Adjustable between 0.1 and 25.5 seconds