RTS EKP-632 User Manual page 74

The term "Crosspoint", like the term "Matrix" is inherited from intercom systems, such as the
Crosspoint
RTS CS9500, CS9600, and CS9700, that use a switching matrix to route intercom audio. In those
systems, the crosspoints are the actual switches that close or open to connect or disconnect talk
and listen paths. RTS ADAM, ADAM CS, and Zeus Intercom Systems do not actually use
crosspoint switches, but use a technique called time division multiplexing (TDM), in which
communications are routed as digital packets. However, use of the term "crosspoint" persists
since packet routing basically accomplishes the same thing as conventional crosspoints: namely,
connecting distinct talkers and listeners. In this sense, a crosspoint can be thought of simply as a
communication link between any two points in the intercom system.
A destination is anything that a talk key talks to or a listen key listens to. A destination can
Destination
therefore be any port, party line, IFB, etc.
"Dim" occurs in two contexts in RTS Digital Matrix Intercom Systems.First, there is the Dim
Dim
Table feature. Dim tables are used to correct a feedback problem that can occur between two
keypanels operating in close proximity that have keys assigned to talk/listen to a common
destination. Dim tables are set up in ADAMedit (search for keyword "dim" in ADAMedit help.
Once a dim table is set up, it can be assigned as a level 2 talk assignment for those keys that are
causing the feedback problem. For information about how to make this assignment from a
programmable keypanel, search for "Dim Table" in the keypanel manual index.There is also an
adjustable speaker dim feature available on the KP-632 Keypanel. This causes the speaker or
headphone volume to diminish by a preset amount whenever a talk key is activated. This can help
to prevent occasional feedback between the speaker and microphone due to volume settings,
microphone placement, etc. For setup and usage, search for "Speaker Dim" in the keypanel
manual index.
General Purpose Input / Output. (You may also see this referred to simply as "GPI".) GPIO is a
GPIO
means of controlling devices using switch contact closures, DC voltages, or similar methods. For
example, you can control a lighting system from keypanel keys, or key a transmitter from a talk
key during transmit. Or, simply operate a light or buzzer for cueing. In ADAM, ADAM CS, and
Zeus intercom systems, you can also control intercom events from external switches. For
example, you can activate key assignments, close or open crosspoints, activate GPI outputs, etc.In
CS9000 Series intercom systems, general purpose control outputs are provided by optional
FR9528 Relay Frames (8 relays each). In those systems, a relay may be assigned to an intercom
key on a keypanel using the Relay key assignment type. Pressing the intercom key activates the
relay.ADAM, ADAM CS, and Zeus intercom systems all have a dedicated GPIO connector (J27
on a Zeus Frame, J903 on an ADAM CS Frame, and J11 on the XCP-ADAM-MC Master
Controller Breakout Panel in an ADAM Intercom System). This connector supports 8 control
inputs and 8 control outputs. Additionally, one or more UIO-256 Universal Input/Output frames
may be connected to the intercom system. Each UIO-256 provides another 16 control inputs and
16 control outputs. Control outputs may be assigned to intercom keys using the Relay key
assignment type, and the intercom keys can then control external devices the same as the FR9528.
Control inputs can be assigned to activate "virtual" key assignments. (A virtual key assignment is
a key assignment at an intercom port where there is not actually any keypanel connected.
Basically, you use an external switch to act like a talk or listen key.) The control inputs and
outputs can also be used as conditions for UPL statements in ADAMedit.Finally, there is a GPIO
option available for the KP-12 keypanel, and a connector module option for the KP-632, which
includes GPIO. These are referred to as "Local" GPIO, since they are assigned and used locally at
the keypanel. Each local GPIO includes 4 control inputs and 4 control outputs.
IFB (Interrupt Foldback) is a special type of communication in which a listener at a particular
IFB
intercom output port normally hears an audio program source connected to a particular intercom
input port. A keypanel operator can activate a key to interrupt the audio program source and then
talk to the listener. Normal operation resumes when the keypanel operator releases the key.IFB is
typically used to cue on-the-air talent. For example, the news anchor during a news broadcast
typically listens to the broadcast audio mix in an earset (except that the news anchor's own voice
audio is removed from the mix). A director at a keypanel can interrupt the broadcast audio to the
news anchor's earset and provide new information to the news anchor. IFB could also be used
with a PA (public address) system that normally broadcasts background music. The background
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