Tait TM9100 Installation Manual page 23

Ignition Signal
Emergency Switch
External Alert Device
TM9100 (40W/50W) Installation Guide
© Tait Electronics Ltd October 2004
The radio can use the ignition signal to be powered up and down. This will
turn the radio off when the ignition key is off to avoid flattening the battery,
and will turn the radio on or return to its previous state (as programmed)
when the ignition key is on.
Note
The AUX_GPI3 line must be programmed to 'Power Sense
(Ignition)' and active to 'High'. For more information, refer to the
online help of the application software.
Connect the ignition signal to pin 4 (AUX_GPI3) of the auxiliary
connector.
The radio allows for connection of an emergency switch to any input line
to enter the emergency mode. If connected to the AUX_GPI2 input line,
the radio can also use emergency power sense
'
to enter the emergency mode.
Note
The selected input line must be programmed to 'Enter Emergency
Mode' and active to 'Low'. To use 'emergency power sense',
hardware link LK3 must be fitted (factory default), and AUX_GPI2
must be used. For more information, refer to the service manual
and the online help of the application software.
Connect a normally closed switch between the pin of the input line (pin 5
for AUX_GPI2) and pin 15 (AGND) of the auxiliary connector.
The radio allows for output to external alert devices using the digital GPIO
lines of the auxiliary connector and the internal options connector.
AUX_GPIO4 can be fitted with a power MOSFET (Q707) in order to
directly connect external alert devices (e.g. flashing light, buzzer, horn relay)
to the radio. Also, resistor R768 must be removed.
Important
While the MOSFET is rated at 12 A (with heat sink), the
maximum allowable current of the connector and radio's
earthing system is 2 A. Therefore, a horn must not be con-
nected directly to the radio. A horn relay must be used.
Note
The selected output line must be programmed to 'External Alert 1
or 2', active to 'Low', and signal sate to 'Momentary'.
Connect the external alert device to the pin of the output line (pin 10 for
AUX_GPIO4) and pin 8 (13V8_SW) of the auxiliary connector (or a
different positive battery connection).
' to power up the radio in order
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