DATASHEET
21
Appendix
• Common negative of the optoinsulated input contacts
The ports of the optoinsulated input contacts have one end (to which the negative pole of the driving tension refers) in common with each other, while
the other end is connected directly to the 6-pole input terminal strip (
41
). The common end can be connected directly to the earth of the card by
means of jumper
CN101
(
J5
) in position
A
or it can be made available on the terminal (
40
) of the card with the jumper in position
B
. This possibility
enables the inputs to be driven using the
+24V
service voltage (
5
) (jumper in position
A
) or by means of a voltage from another circuit (jumper in
position
B
), keeping the card galvanically insulated from the equipment driving the inputs.
• Speech filter (Low Cut Filter)
Jumper
CN107
(
J3
) in position
A
enables the lowest frequencies to be cut out so as to improve the intelligibility of speech. With the jumper in
position
B
the full band is reproduced.
• Audio input
It is possible to connect a source of sound balanced at line level to the terminal strip (
38
). The level of the signal is of the semi-fixed type,
adjustable by means of a screwdriver (
37
).
• Power supply
The card can be powered either directly by the slave unit by means of the connecting cable or locally by means of the socket provided for this
purpose (
42
).
Section
A
Settings and Controls
Operating mode
VOXB
VOXA
Activation via input contacts
•
•
Activation of VOX in All Call mode
•
-
Activation of VOX with zone selection
-
•
Activation of VOX with selection of slave units
-
-
> Activation via input contacts
Closing of one or more input contacts (
41
) generates a request for a call send
to the
Group-leader Slave
; the call refers to the zones
corresponding to the contacts that are closed (
contact 1
–
zone 1
,
contact 2
–
zone 2
and so on).
The card accepts the contacts that close within
500 msec
starting from the first contact to close. Any closing occurring later will be ignored. If
the slave enables the call, the card will activate the audio input line (
38
), otherwise it continues to wait to be enabled. The call ends when all
the contacts open again.
> Activation of VOX in the All Call mode
When there is a signal at the audio input (
38
), the card automatically generates an All Call request
to all the zones in the group
. If the
group-leader slave enables the call, the card will activate the audio line, otherwise it continues to wait to be enabled. The call ends when there
has been no input signal for over about four seconds.
> Activation of VOX with zone selection
When a signal is present on the audio input (
38
), the card automatically generates a request for a call to the zones corresponding to the input
contacts that are closed at the time of activation of
VOX
(
contact 1
–
zone 1
,
contact 2
–
zone 2
and so on); subsequent closing and/or
opening of contacts will be ignored for the whole time during which VOX is active. If the group-leader slave enables the call, the card will activate
the audio line, otherwise it continues to wait to be enabled. The call ends when there has bee no input signal for over about four seconds.
> Activation of VOX with selection of slave
When there is a signal at the audio input (
38
), the card automatically generates a request for a call referred to the input contacts that are closed
at the time of activation of VOX. Subsequent closing and/or opening of contacts will be ignored for the whole time during which VOX is active.
The input contacts will activate the corresponding zones as follows:
contact
1
= all the zones of the
group-leader slave
contact
2
= all the zones of the
slave having the address 1 number higher than that of the group leader
contact
3
= all the zones of the
slave having the address 2 numbers higher than that of the group leader
.....
contatto
6
= all the zones of the
slave having the address 5 numbers higher than that of the group leader
*
In any case, calls can be made only by slaves belonging to the same group.
If the group-leader slave enables the call, the card will activate the audio line, otherwise it continues to wait to be enabled.
The call ends when there has been no input signal for over about four seconds.
4.2 Settings for local ACIO8136’s
• Operating mode of audio input section and contacts *
The two jumpers
VOXA
(
J6
) and
VOXB
(
J7
) define the operating mode
of the card as far as concerns the activation and call criteria (see table
opposite).
Relay mode
OPT
Replication of contacts
-
Card status
•
Operating mode section relay outputs
Jumper
OPT
(
J4
) enables operation of the relay contacts of the card to
be configured (see table).
•
> Card status
The contacts of the relays are used to relay the information concerning the operational status of the card to outside:
RL1
speech enable
: the contact is kept closed while the card is enabled to call;
RL2 speech enable negato
: the contact is kept open while the card is enabled to call;
RL3
busy
: the contact is kept closed while a call is in progress by another unit;
RL4 active input
: the contact is closed to indicate closing of one or more input contacts;
RL5
RL5 not used
;
RL6 VOX
gate
: the contact closes to indicate the presence of a signal at the input of the card,
regardless of whether or not it is enabled
.
The contact opens again when there has been no signal at the input for about 4 seconds.
□
□
□
□
□
□
> Replication of contacts
The contacts of the relays simply replicate closing of the input contacts in an orderly manner (
input 1
=
relay contact 1
,
input 2
=
relay contact
2
and so on).
