User`s manual
AEQ FORUM 
Digital audio mixer for broadcast applications 
26
Using the modules described above, in the numbers and available free position of the 14 
available slots on the rear panel of AEQ FORUM, each customer can customize their AEQ 
FORUM mixing console to exactly fit its specific requirements and applications. 
In order to simplify the installation phase, AEQ offers a prefabricated wiring kits for the different 
audio inputs and outputs modules available. More information in section 2.2.4 of this manual. 
2.2.3.1. FR02 Digital inputs/outputs module. 
The AEQ FORUM FR02 module includes 4 AES/EBU or SPDIF stereo digital inputs and 4 
AES/EBU or SPDIF stereo digital outputs on two DB15 connectors. 
The 4 digital inputs on the FR02 are available through a female DB15 connector identified as 
“AES/EBU 4 STEREO INPUTS”. The 4 digital outputs on the FR02 are available through a male 
DB15 connector identified as “AES/EBU 4 STEREO OUTPUTS”. 
 DB15 female connector pin-out detail    DB15 male connector pin-out detail 
Pin 
AES/EBU 4 STEREO 
INPUTS connector 
1 IN1+ 
2 GND 
3 IN2+ 
4 GND 
5 IN3+ 
6 GND 
7 IN4+ 
8 GND 
9 IN1- 
10 GND 
11 IN2- 
12 GND 
13 IN3- 
14 GND 
15 IN4- 
The module FR02 includes SRC (Sample-Rate-Converters) for all inputs and outputs. The 
digital audio format for each input or output is irrelevant in the process of installation and 
configuration since it is being managed automatically and transparently to the user. 
Pin 
AES/EBU 4 STEREO 
OUTPUTS connector 
1 OUT1+ 
2 GND 
3 OUT2+ 
4 GND 
5 OUT3+ 
6 GND 
7 OUT4+ 
8 GND 
9 OUT1- 
10 GND 
11 OUT2- 
12 GND 
13 OUT3- 
14 GND 
15 OUT4- 










