User's Manual

EtherSound ES8in, ES8mic & ES8out
Ethernet Audio Bridges
GPI optocoupler specifications
Minimum 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 set to “1”,
the GPO closes the related relay. If set to “0”, the GPO opens the related relay.
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
15