Reflected Ptt Inhibit Status; Signalling Audio Mute Status - Tait TM8000 Series Applications Manual

3.2.6

Reflected PTT Inhibit Status

Configuration
Timing
Description
Related Actions
3.2.7

Signalling Audio Mute Status

Application
Configuration
Timing
Description
Related Actions
TM8000 3DK Hardware Developer's Kit Application Manual
September 2003 © Tait Electronics Ltd
This output signal is used to report the current PTT inhibit status by
generating a logic OR of all PTT sources programmed to reflect their status.
The priority does not affect the logic OR.
1. In the PTT form, configure the 'PTT Inhibit State is Reflected'
check box for each PTT type.
2. In the Programmable I/O form, configure an output line and
associate it with this action. Set the active state to be high or low (as
required).
The response time of this output line is less than 2ms.
When the PTT inhibit status changes from on to off or off to on, this status
is reflected on the output line.
The 'Inhibit PTT' input signal is used to stop any current PTT
transmissions, return to receive state and inhibit any further PTT
transmission requests.
This output signal is used to indicate valid traffic on a channel (e.g. to
quieten a car stereo).
Configure an output line and associate it with this action. Set the active state
to be high or low (as required).
The response time of this output line is less than 2ms.
If the radio receives a carrier and either signalling is valid or the monitor is
active, this output line becomes active.
If the radio receives a carrier, and the channel is not programmed to have
signalling, this output line becomes active.
Any condition that would cause audio mute to close will cause deactivation
of this signal.
The 'Busy Status' output signal also detects the carrier but ignores signalling.
Programmable I/O Lines 73