Clear-Com i-Series Panels - Manual (Page 65)

Clear-Com Communication Systems
I-Series Instruction Manual 4 - 9
The logic device will activate keys latched both before and after you
enabled this function in the Eclipse Configuration System.
Note that the latched keys assigned to two-way radio keys at your
panel may appear to be active, since their talk lights will illuminate, but
they are only active when you switch on the connected logic device.
Any controls (relays, etc.) assigned to the 2-way radio keys along with
the audio functions now also are only active when signalled by the
remote device.
You can, however, activate a talk path from any key assigned to a
2-way radio by pressing and holding the key in momentary mode while
you talk. The PTT: Activate 2-Way Radio Keys function only affects
latched keys.
Relay Outputs Connector
The DB-15F connector labeled “J5B” connects your i-Series panel to
three single-pole double-throw (SPDT) relays with contact ratings of 30
VDC (volts direct current) at 1 A (ampere).
A relay is a switch that you control remotely. You program the relay in
the Eclipse Configuration System to close a contact whenever an
intercom panel’s key is pressed. When the contact is closed it
completes an electronic circuit’s signal path so that a remote device,
such as a light, is powered.
You can program a relay to mute a speaker, to turn on an applause
light, to turn on a door lock, or for a variety of other functions. For
example, to get the attention of a panel operator working in a
high-noise environment such as a control booth, you can program a
relay to switch on a light at his panel each time he receives an
incoming call, thus insuring that he will not miss the incoming call.
The i-Series panel has three relays: the auxiliary relay, the mute relay,
and the studio announce (SA) relay.
Mute Relay
The mute relay is controlled by the Eclipse Configuration System. It is
typically used to decrease or shut off an externally mounted
loudspeaker. When you activate this feature, pressing any talk key on
the panel will decrease or shut off the volume at an externally mounted
loudspeaker. This function helps to ensure that noise from the external
loudspeaker does not disrupt the communication at the intercom
panel.
Both normally open and normally closed contacts are provided. They
are rated at 30 VDC (volts direct current) at 1 A (ampere). The mute
relay is not designed for switching mains AC line voltage. To switch an
external device running on mains AC line voltage, use an external
relay (or other switching mechanism) activated by the relay.
J5B