Tait TM8100 mobiles Service Manual page 87

TM8100/TM8200 Service Manual
© Tait Electronics Limited November 2007
The emergency power-sense option can be used in conjunction with any of
the other four options.
The different power-sense options have to be facilitated by hardware means,
as the software cannot act before it is powered up. The radio provides four
hardware links (LK1 to LK4) on the top-side of the main board which can
be configured to attain the power-sense option desired.
Figure 3.10 shows a block diagram of the hardware links LK1 to LK4.
Figure 3.10 Block diagram of hardware links LK1 to LK4
13V8 BATT
LK1
13.8V Battery
Power Sense
LK2
AUX GPI3
Auxiliary Power Sense
(Ignition Sense)
LK3
AUX GPI2
Emergency
Sense
LK4
IOP GPIO7
Internal Options
Power Sense
The radio can be programmed to be either on, or to return to its previous
state when the power sense signal is removed. For information on
programming the power-on mode refer to the online help of the
programming software.
/
The key can be used with any of the of the power-sense options to
ON OFF
turn the radio on and off.
O /O Key
N FF
13V8 BATT
Circuit Descriptions
Power-up
Circuit
87