Tait TB8100, User Manual

Page: 224 / 254

214 Part I: Task Manager
© Tait Electronics Limited December 2007
When the flag is disabled, subaudible signalling is not decoded. The received
signal is regarded as valid irrespective of its subaudible signalling.
Subaudible Encoding
Subaudible encoding override actions can enable, disable, or toggle the
Subaudible encode system flag. This gives you an extra layer of control over the
subaudible signalling that the base station encodes onto its transmissions.
When the base station enters Run mode, the flag is enabled.
When the flag is enabled, the base station encodes transmissions according to
the signalling profile’s configuration (Subaudible signalling tab).
When the flag is disabled, transmissions are not encoded with subaudible
signalling.
System I/O
System I/O actions affect the base station’s digital outputs.
Activate Digital Output n
The
Activate Digital Output n
action makes the Digital Out n line on the
system interface active . If this line does not exist on the current user interface,
the action has no effect.
In base stations with a complex set of Task Manager tasks, you need to
understand exactly how this action works. The actual activation of the digital
output doesn’t happen till the end of a processing cycle. So the task list can
activate and deactivate a digital output many times, but the output line will only
ever be activated if the last action for that digital output is to activate it.
IF Counter at maximum (LightTrigger) THEN Activate Digital
Output 2 .
Deactivate Digital Output n
The
Deactivate Digital Output n
action makes the Digital Out n line on
the system interface inactive. If this line does not exist on the current user
interface, the action has no effect.
In base stations with a complex set of Task Manager tasks, you need to
understand exactly how this action works. The actual deactivation of the digital
output doesn’t happen till the end of a processing cycle. So the task list can
activate and deactivate a digital output many times, but the output line will only
ever be deactivated if the last action for that digital output is to deactivate it.
Tx Relay actions
Tx relay override actions can enable, disable, or toggle the Tx Relay system
flag. This gives you an additional layer of control over the Tx Relay Driver line
on the system interface. When the base station enters Run mode, the flag is
enabled.
When the Tx Relay system flag is disabled, the Tx Relay Driver line cannot go
active.
When the Tx Relay system flag is enabled, the base station can control an
antenna relay using the Tx Relay Driver line, switching the relay before
powering its transmitter up.
If the base station is not fitted with a system interface board that provides a Tx
Relay Driver line, the Tx Key system flag has no effect.