System Devices And Functions; Audio Matrixes; Gpi" Inputs; Programmable Relays - Mackie RCF RX 3000 Instructions D'emploi

SYSTEM DEVICES AND FUNCTIONS

AUDIO MATRIXES

The RX 3000 system can manage a maximum of 8 audio matrixes, which are completely independent of each other; the maximum capacity
of one matrix is 32 inputs and 64 outputs (max. 2 matrixes 32x64). The matrixes have total accessibility; i.e., in any one audio matrix, each
input can be connected with any of the outputs. The inputs and outputs of the audio matrixes are obtained with the installation of the
IB 3210 / IB 3280 AUDIO INPUT boards and OB 3230 AUDIO OUTPUT boards. Depending on the number of IB 3210 / IB 3280 AUDIO IN
and OB 3230 AUDIO OUTPUT boards installed in the MB 3200 sub-rack, it is possible to create innumerable audio matrixes (e.g. matrix with
8 inputs and 16 outputs, matrix with 8 inputs and 32 outputs, etc.).

"GPI" INPUTS

The GPI inputs (General Purpose Input) are special opto-insulated inputs that are available when the IO 3250 digital INPUT/OUTPUT boards
are installed in the MB 3200 sub-racks of the system. The GPI inputs can be used for controlling various types of events chosen as desired
by the user. The list of events that can be controlled is given in the section EVENTS CONTROLLED BY THE GPI INPUTS. To control a GPI in-
put, it only needs to be connected to a normal electrical contact.
PROGRAMMBLE RELAYS
The programmable relays are available when the IO 3250 digital INPUT/OUTPUT boards are installed in the MB 3200 sub-racks. The relays
are programmed by means of the CP 3100 control unit. Each IO 3250 digital INPUT/OUTPUT board has 24 relays, each of which is equipped
with a contact. Using a dedicated menu on the CP 3100 control unit, you can set the status of the contact as "normally open" or "normally
closed"; i.e. the status that the contact must assume when the system has been configured (see the section STORING A CONFIGURATION).
The contacts can be used as desired for various purposes. The contact switching can be commanded in one of the following ways:
• by means of system events (see the section EVENTS CONTROLLED BY THE GPI INPUTS).
• using the ALARM key of the BM 3616 digital consoles (see the section EVENTS CONTROLLED FROM THE BM 3616 DIGITAL CONSOLES).
• using the F1, F2, F3 keys of the BM 3616 digital consoles (see the section EVENTS THAT CAN BE CONTROLLED FROM THE BM 3616 DI-
GITAL CONSOLES).
• by means of the BM 3604 consoles (see the section EVENTS CONTROLLED FROM THE BM 3604 DIGITAL CONSOLES).
• by means of the VOX device on the OB 3230 AUDIO OUTPUT boards (see the section VOX DEVICE).
• by means of timed events (see the section TIMED EVENTS).
by means of the audio matrix of the system, when a certain output is connected with an input, with the exception of the inputs defined as
BGM (background music).
This function is defined with the programming of the audio outputs as described in the section USING THE "OUTPUT PROCESSORS" MENU.
IMPORTANT NOTE
• In certain cases, the relays have a unitary assignment; that is, they can be controlled by only one event/device (e.g. feedback relay of a
BM 3604 console).
• According to the programming carried out using the CONFIGURATION menu of the CP 3100 control unit (see the section SYSTEM CON-
FIGURATION), the same relay can be controlled simultaneously by more than one device; in this case, the switching of its contact takes
place as follows.
a. When one of the specially programmed events/devices controls the relay, its contact switches from the normal position.
b. If, in the meantime, other events/devices control the relay, its contact remains switched with respect to the normal position.
c. If control of the relay by the first event/device that controlled it stops, the contact remains switched.
d. The relay is switched back to the normal position only when there is no device controlling it.

AMPLIFIER CONTROL UNITS (A.C.U.s)

The RB 3300 back-amplifier boards are identified in the various menus of the CP 3100 control unit with the abbreviation A.C.U. (Amplifier Con-
trol Unit). The function of the boards is indicated in the section DESCRIPTION.
A dedicated menu on the control unit is used for configuring the boards and programming them with the operating modes described in this
section.
Each A.C.U. in the system is identified in the various menus of the CP 3100 control unit by an IDENTIFICATION NUMBER in the range from
1 to 120 (the maximum number of A.C.U.s that the system can handle), which depends on the addresses assigned to the boards during the
installation phase.
Depending on the function of the amplifier controlled by the back-amplifier board, the A.C.U. can be one of two types:
• NORMAL – An A.C.U. whose function is to control a primary amplifier, normally dedicated to sound amplification in a certain audio zone.
• BACKUP – An A.C.U. whose function is to control a backup amplifier, which is normally used to substitute for a primary amplifier, for exam-
ple, in the event of a failure. When a primary amplifier is substituted, the respective audio zone is covered by the backup am-
plifier. If the system includes two or more backup amplifiers for multiple primary amplifiers, the function of the first backup am-
plifier is to substitute any primary amplifier (e.g. in the event of a breakdown).
The function of the second backup amplifier is only to substitute for the first backup amplifier, if the first one fails in ad-
dition to the primary amplifier, and cannot be used to substitute for a second primary amplifier that has failed.
The third backup can only substitute for the second backup, and so on for all the backup amplifiers present in the group.
NOTES
• When there is only one backup amplifier in the system for one or more primary amplifiers, in order to have automatic activation of the
backup amplifier in the event of a breakdown on the primary amplifier, it is not indispensable for it to be coupled with an RB 3300
back-amplifier board (BACKUP A.C.U.).
• The use of a BACKUP A.C.U. is indispensable when the backup amplifier has to be monitored, or when it has to be substituted
with a further backup amplifier.
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