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24 Installing the Radio TM9100 Installation Guide

must be used. For more information, refer to the service manual

and the online help of the programming application.

Connect a normally open switch between the pin of the input line

(pin 5 for AUX GPI2) and pin 15 (AGND) of the

auxiliary connector.

External Alert Device 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) 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 12A (with heat sink), the

maximum allowable current of the connector and radio’s

earthing system is 2A. Therefore, a horn must not be

connected 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).

This means that the negative side of the alert device must be con-

nected to AUX GPIO4 and the positive side to pin 8 (+13V8 SW).

The external alert device must be capable of accepting a voltage of

between 10V and 18V.

Tait TM9100 Installation Guide

Other manuals for Tait TM9100