AVT MAGIC AC1, Hardware & Software Manual

Page: 79 / 162

PAGE 79
W i n d o w s P C S o f t w a r e
TTL Pin as Input
FIG. 45 TTL PIN AS INPUT
If you use a TTL Pin as
Input
, you can configured two different functions
1
when the edges change:
•
Positive edge
: The event is triggered when the voltage at the TTL Pin
changes from 0V to+5V.
•
Negative edge
: The event is triggered when the voltage at the TTL Pin
changes from +5V to 0V.
The following
Function Codes
can be selected:
–
-
(Not used): No function, the Pin is not used. This option is to be se-
lected for remote control via the function
Output
→
Remote TTL In-
put
(see page 82).
–
Call Number
:
With this function you can establish a connection with a certain calling
Number
. With
Line
you select the line (
1
or
2
) on which the connection
is to be established (only in the ISDN operating mode). Under
Trans-
mission Mode
you select the desired mode for the transmission.
–
Call Number (level triggered)
:
Same function as above, however, except that here the level is analysed
and not the edge.
–
Disconnect
:
Disconnect
: By enabling this function a connection on
the indicated line (
1
or
2
) can be disconnected.
1
Except function code Call Number (level triggered) , if this code is selected only one edge can be
used.
TIP
With this function, you can configure an automatic redialling to ensure that
the partner is automatically re-dialled if there is an unexpected disconnec-
tion. Please configure this function under
Positive edge
. Since the TTL Pin
has a 5V level by default, a connection to the given number is established im-
mediately.
Attention: This function can only be ended by setting the Pin to the 0V level
or switching off this function via the configuration.