User`s manual
AEQ FORUM 
Digital audio mixer for broadcast applications 
71
There are two distinct parts in this submenu: the upper part is dedicated to the configuration of 
the Studio Room section and the lower to the Control Room section. 
4.2.4.1. “Studio Room Section“. 
This section of “Monitoring Configuration” submenu lets you choose how the four keys under 
the display of the Studio Room Control and Monitoring section shall work, either in “Mixer” or 
“Exclusive”. If the option “Mixer” is selected, the output bus associated with “Studio” monitor 
and headphones will act as a summing bus and therefore may be more than one of the four 
keys simultaneously activated, thus mixing the signals corresponding to each of the four keys 
on the studio monitor and headphones. On the other hand, in the “Exclusive” mode, this output 
bus will not act as a summing bus and therefore may not be more than one key activated at any 
given time (this effectively means that by pressing any of the four keys, the previously activated 
one will be disconnected from the summing bus and replaced by the new selection). 
In this section you can also allocate the GPO physical outputs associated with Studio “OFF AIR” 
green light (indicates that there are no sources, typically microphones, activated in the studio 
room) and “ON AIR” red light (indicates that there are no sources, typically microphones, 
activated in the studio room). You can choose between the opto-coupled GPO´s (1 to 8) or the 
contact relay GPO´s (9 to 12): these last ones are recommended. See section 2.2.2.1 of this 
manual. 
4.2.4.2. “Control Room Section“. 
This section of “Monitoring Configuration” submenu lets you choose how the four keys under 
the display of the Control Room Control and Monitoring section shall work, either in “Mixer” or 
“Exclusive”. If the option “Mixer” is selected, the output bus associated with “Control” monitor 
and headphones will act as a summing bus and therefore may be more than one of the four 
keys simultaneously activated, thus mixing the signals corresponding to each of the four keys 
on the studio monitor and headphones. On the other hand, in the “Exclusive” mode, this output 
bus will not act as a summing bus and therefore may not be more than one key activated at any 
given time (this effectively means that by pressing any of the four keys, the previously activated 
one will be disconnected from the summing bus and replaced by the new selection). 










