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122 Handbook of Intercom Systems Engineering
matrix panels, these keys can be programmed either at the panel itself, or from the
configuration computer (not shown) that is attached to the Zeus.
IFB828 IFB Power Supply
This unit is the Model 4010’s matrix brother. Since all priority, tally, and interrupt chores
and handled by the Zeus
™
matrix, the IFB828 acts simply as a power center for the 4030
talent stations. There are eight of these circuits available. The program sources from the
audio console are connected directly to the Zeus on the same ports that are used by the
IFB828.
SSA324 System-to-System Adapter
The SSA324 changes a two-wire circuit to a four-wire circuit for introduction into the
matrix. Each SSA324 is capable of two of these circuits. We have four ports in our
scenario.
PS15 Power Supply
Provides operating voltage, with active impedance generator, to the BP325, BP318’s, and
the MRT327-K.
SAP612 Source Assign Panel
Since a matrix typically assumes more of the traffic management role than our previous
two-wire consoles such as the 803, less outside source assignment is required. Therefore,
we can specify the smaller SAP612 for our application to achieve the desired circuit
assignment. The SAP612 assigns 12 positions (TW two-wire stations) to one of six
conference circuits. As with the larger SAP1626, the SAP612 in our system does two
things: it assigns each of the 2 TW channels to 1 of 6 conferences amongst themselves, and
it fixes each of these conferences to up to 4-talk/listen keys on the matrix stations.
MRT327-K Modular User Station
The MRT327-K was chosen for the Chyron positions in our medium system for its
simplicity. These stations are capable of two-channel operation, one channel at a time.
PAP951 Program Assign Panel and UIO256 GPI
These ancillary devices attach to a special connector on the matrix. No extra ports are
required, preserving the maximum size of the matrix. Meaning, more of these units can be
added to the system. The PAP951, located in the Audio position, allows the operator to
quickly assign programs to IFB circuits. The unit attaches to the matrix on a digital pair,
and no actual audio flows through this controller device.
The UIO256 is a 16x16 General Purpose Interface unit. It is included in our intercom for
keying a two-way radio in future expansion of the system. If a squelch relay contact
closure is available from the radio, the UIO256 can cause a flashing tally to appear at any
given matrix keypanel when there is activity on the radio.
Cameras in the Medium Intercom
If the cameras can be set to four-wire intercom operation, they can be tied directly to the
matrix. They may be established as any number of conferences. Operating in this manner
gains the advantage of camera ISO ability from any matrix station (on the left side in
figure 4). Also, the audio levels to and from the cameras can be set internally within the
matrix. No extra outside audio amplifiers are necessary. The reason for this is the RTS
™
Zeus is a mixer, not just a matrix of physical crosspoints like those we had in the past.