User`s manual
AEQ FORUM - DIGITAL AUDIO MIXER FOR BROADCAST APPLICATIONS 
21
DB9 female connector 
GPI inputs (2 x SUB-D female 9 pin). 
1  GPIN1    1  GPIN5 
6  GND_GPIN1    6  GND_GPIN5 
2  GPIN2    2  GPIN6 
7  GND_GPIN2    7  GND_GPIN6 
3  GPIN3    3  GPIN7 
8  GND_GPIN3    8  GND_GPIN7 
4  GPIN4    4  GPIN8 
9  GND_GPIN4    9  GND_GPIN8 
5  Not connected 5  Not connected  
On request, this wiring kit can be supplied with connectors explicitly specified by the customer. 
For  more  information  please  refer  to  AEQ  sales  department  or  authorised  distributors. 
 2.2.2.1.2. Opto-coupled GPO 
The  AEQ  FORUM  includes  8  electronic  interfaces GPO  of  opto-coupled type through  the  two 
male DB9 connectors in the “GP OUTPUTS” section. The connectors are numbered from 1 to 4 
and 5 to 8. 
Specifications: 
•  Opto-coupler protected outputs (TLP127). 
•  Maximum current: 80mA. 
•  Recommended Maximum voltage: 200V. 
•  Maximum power: 100mW at 40 ° C. 
•  Requires external power. 
Electronic output associated with general-purpose opto-coupler GPO 
In order to simplify the  installation  phase, AEQ  offers a  prefabricated  wiring kit  specifically for 
GPO  outputs:  CAB  FR  GPO,  female  DB9  connector  soldered  to  4  metres  of  cable  open-end 
termination for GPO. More information in section 2.2.4 of this manual. 










