User Manual

EtherSound ES881, ES1241 & ES16161
Ethernet Audio Bridges
13
GPI optocoupler specifications
min
imum current i
min
to switch GPI
0,5 mA
Maximum current i
max
supported
50 mA
i calculation rule (GPi #3 & #4)
i (mA) =
3,3
1,2 - V
in
Maximum voltage V
in
supported
50 V
dc
Maximum reverse voltage V
in
supported
6 V
General Purpose Outputs (GPOs)
The ES8 GPOs are relay outputs. They feature two pins each and are all configured the same way. Pins 1 & 2
belong to GPO #1, 3 & 4 to GPO #2, 5 & 6 to GPO #3, and 7 & 8 to GPO #4.
It responds to commands of configuration and management software sent via the Primary Master. If written at
“1”, the GPO closes the linked open collector. If written at “0”, the GPO opens the linked open collector.
GPO relay specifications
Maximum power switching capability 10 W
Maximum switching current
500 mA
dc
Maximum carrying current
1 A
dc
Maximum switching voltage
100 V
dc
Typical life expectancy (switching max power) 10
6
operations