Beale Xpress IA-1250, Руководство пользователя

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As with everything else about the IA-1250, how it is controlled is dependent upon how it is being used.
Three basic modes will be explained: Voltage controlled, IR controlled and RS232 controlled.
There are of course, variations on these three basic control modes that can utilize some options from the
other modes. An attempt to detail every option would probably be more confusing than useful, so look for
the features that fit a given application, and then configure the IA-1250 appropriately.
VOLTAGE CONTROLLED
This mode would typically be used when the IA-1250 is being used purely as a multi-channel power amp
with a multi-zone controller or preamp. That is, there would typically be no control of volume, mute or any
other functions other than amp ON/OFF.
In this mode the IA-1250 will be turned ON with a control voltage from the multi-zone controller or preamp
to the Control IN jack. The IA-1250 zone amps will output audio content as selected by the zone controller
or preamp at levels set by the zone controller or preamp. Zone audio can also be switched to the Audio Bus
IN using a voltage trigger on any zone(s) where audio paging or other temporary 'Bus' audio source may be
desirable.
The IA-1250 will turn OFF when the control voltage to the IA-1250 Control IN from the multi-zone
controller or preamp is cut.
Setup
Connect the IA-1250 Control IN jack to a voltage control OUT on the multi-zone controller or preamp. See
section Connections/Control IN for additional information.
NOTE: In this application it may be desirable to connect an IR system to the individual zones to set zone
audio levels relative to the multi-zone controller or preamp to set max output levels. This can also be done
using a computer with a USB to Serial adapter via RS232. (These connections would be for setup only.)
Operation
There would not be any user specific control of the IA-1250 in this application.
IR CONTROLLED
This mode would typically be used when the IA-1250 is being used with a single audio source being fed
to all IA-1250 zones, (as shown in the illustration on the opposite page) or when each IA-1250 zone has a
dedicated audio source. The IA-1250 IR Remote would be used to turn a zone ON/OFF, adjust volume, mute
and tone controls.
NOTE: The Remote Bypass switch can be used to allow or not allow (bypass) IR (and/or RS232) control of
any/all zone(s).
All of the following assumes control from a local zone with a connected IR receiver as shown in the
illustration on the opposite page. The IR control system can also be used to control the audio source(s) and
other IR controlled devices. Each zone would require a dedicated IR system or use of an IR zone controller
with dedicated zone IR IN/OUTs.
Operation