User's Manual

10 | P a g e
Intercom Grouping (as a group member)
To place the module in intercom grouping mode as a group member (Joining an existing
group), J3 pin 9 should be placed High for Five seconds while the CARDO PRO1 is on.
Function
Pin
In/Out
signal
Digital
state
Min
Typ
Max
Unit
Intercom
button High
J3 pin 9
I
Weak pull
down
2
V
Intercom
button low
0.4
V
Intercom Grouping (as a group creator)
To place the module in intercom grouping mode as a group creator (Create a new group):
1. J3 pin 9 should be placed High for Five seconds while the CARDO PRO1 is on.
2. J3 pin 9 should be placed High for 100msec seconds (One to five seconds after step
1).
Function
Pin
In/Out
signal
Digital
state
Min
Typ
Max
Unit
Intercom
button High
J3 pin 9
I
Weak pull
down
2
V
Intercom
button low
0.4
V
Volume Up
To increase the volume of the module, J3 pin 10 should be placed High for 100msec.
Function
Pin
In/Out
signal
Digital
state
Min
Typ
Max
Unit
Volume Up High
J3 pin 10
I
Weak pull
down
2
V
Volume Up Low
0.4
V
Volume Down
To decrease the volume of the module, J3 pin 11 should be placed High for 100msec.
Function
Pin
In/Out
signal
Digital
state
Min
Typ
Max
Unit
Volume Down High
J3 pin 11
I
Weak pull
down
2
V
Volume Down Low
0.4
V