User`s manual
AEQ FORUM - DIGITAL AUDIO MIXER FOR BROADCAST APPLICATIONS 
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•  ON CHANGE GPO is activated by transitions from high to low or the inverse. 
•  PULSE HIGH, as an output in the form of a high level pulse with a duration that is 
defined in milliseconds in the field *DURATION”. 
•  LOW  PULSE as  an  output  in  the  form  of  a  low level  pulse  with a  duration  that is 
defined in milliseconds in the field *DURATION”. 
4)  RELAY, allows you to configure the GPO outputs on physical contact relays as opposed 
to the opto-coupled GPO's on open collector transistors. There are four contact relays 
or  contacts,  and  to  configure  the  GPO's  you must  access  the  advanced  configuration 
menu  by  clicking    “CLICK  TO  CONFIG”    and  then  click  again  on  the  new  CONFIG 
button that  will appear  The menu for advanced configurations - RELAY is identical to 
the previously described menu for opto-coupled GPO's. 
Menu for advanced configurations - RELAY 
 4.2.2. MIXER BUS CONFIGURATION sub-menu 
Access  the  MIXER  BUS  CONFIGURATION  sub-menu  from  the  drop-down  menu  Internal 
Hardware Configuration clicking the icon. 
MIXER BUS CONFIGURATION sub-menu icon; 
MIXER  BUS  CONFIGURATION  This  sub-menu  allows  you  to  define  the  configuration  of  the 
internal  summing  buses  of  the  mixer.  AEQ  FORUM  is  supplied  configured  with  the  following 
factory default buses: 
•  MASTER1, defined as “Program”, stereo signal by default 
•  MASTER2, defined as “Audition”, stereo signal by default 
•  AUXILIAR1, defined as “Aux 1”, stereo signal by default 
•  AUXILIAR2, defined as “Aux 2”, stereo signal by default 
•  CUE or PFL bus, defined as “Cue”, stereo signal by default 
•  SRM (studio monitors) output or SHP (studio headphones) output defined as part of 
the signals in the “Studio”, stereo signal by default. CRM (control monitors) output 
or CHP (control  headphones) output defined as  part  of the  “Control room”, stereo 
signal by default. 
•  Bus  Clean-feed  1  or bus  return to  hybrid or  audio-codec  module  1  defined as 
“MPX1”, mono signal by default. 
•  Bus  Clean-feed  2  or bus  return to  hybrid or  audio-codec  module  2  defined as 
“MPX2”, mono signal by default. 
You  can  edit  the  "label"  for  each  mixer  bus.  If  a  mixer  bus  in  factory  configured  as  stereo  is 
reconfigured to mono, the liberated channel will pop up on the configuration screen as available. 
The  opposite  would  happen  if  you  change  the  settings  for  the  buses  MPX1  or  MPX2.  These 
buses  are  mono  buses  by  default  and  should  you  reconfigure  for  example  MPX1  for  stereo 










