Qt X Sound Masking System
Installation and Operation Guide
page 9
Panel Connections
(continued)
GPIO (General Purpose Input Outputs)
The logic port connections can be configured as either an input or output trigger
in either "Active Low" or "Active High" states. This is useful for applications
where events may be triggered to offer functionality inside Qt X (as an Input) or
indicate a condition within Qt X (as an Output). Unchecking the "Active Low" box
results in an "Active High" state. See Figure 6.
NOTE:
The top socket l5V is reserved for future use.
Input / Mute Function:
By connecting to a contact in an "Active Low" state,
the selected zones will mute all sound masking, background music, and paging
sources - effectively muting all sound from selected zones upon a contact closure
(closed). Changing the state to "Active High" will mute all sources of the zones
when the contact is open.
Input /
Push-to-Talk (PTT)
Function:
When an incoming contact is closed
("Active Low") the audio source shown will be sent to all zones selected under
the Zone Name dialog. This results in background music muted in the selected
zones and the audio source chosen to be adjustable on the Zone Paging Level
control. Changing the state to "Active High" will route the selected audio source
to the selected zone(s) when the contact is open.
Output / Mute:
Provides indication of a GPIO Input Mute condition present on a
specific zone. When in "Active High" state a mute initiated by the GPIO input on
any of the selected zone(s) will result in +5VDC being present across Pin 1 or 2
(dependent on IO Output port) and GND. Switching the output to "Active Low"
indicates the selected zone is unmuted.
Output / Talk Now:
Provides indication of the state of the Push-to-Talk (Contact
Input #2) or any available IO port configured as an Input Push-to-Talk. Selection
of associated port is done by selecting from the Page Control drop down. This
functionality is useful to indicate that a person can now speak into an active
microphone by illuminating an LED (+5 VDC) when a specific Push-to-Talk
contact is active. Connect Pin 1 or 2 (dependent on IO Output Port) and GND
Pin in an "Active High" state and the LED will illuminate when the associated
Push-to-Talk input is active. Selecting the "Active Low" checkbox will provide
+5VDC voltage to the "Talk Now" output port when the associated Push-to-Talk
input is inactive, indicating a paging microphone is in a ready condition.
WARNING:
Mute functionality should only be used in situations where it is
permissible to disable a zone in very select instances. (i.e. a conference room
with audio conferencing technology)
It is never acceptable to mute sound
masking in areas when building occupants might be present.
IMPORTANT:
Note conductor designations for
this connector
(Behavior is assigned in the software or web UI)
Figure 6.
GPIO connection / wiring
Contact
CLOSED
-
All sound is muted in
designated zone(s)
Contact
CLOSED
-
Selected audio source
sent to designated
zone(s) - mutes sound in
those zone(s)
Sends +5V indicating
UNMUTED to designated
zone(s)
Sends +5V when
Push-to-Talk is inactive
Contact
OPEN
-
All sound is muted in
designated zone(s)
Contact
OPEN
-
Selected audio source
routed to designated
zone(s) - mutes sound
in those zone(s)
Sends +5V indicating
MUTE to designated
zone(s)
Will also indicate
Emerg. Contact muting
Sends +5V when
Push-to-Talk is active
