HelixNet | User Guide
Setting Options
Dim 0 dB (default)
-3 dB
-6 dB
-12 dB
-24 dB
4. For each setting, select the option you require.
15.10 General Purpose Input (GPI) and General Purpose Output
(GPO) Triggers
The GPIs and GPOs can be used to link the system to an external appliance.
The GPI (Opto) enables a Talk or Call button press on any one of the 4 keysets local to the
selected device to be triggered by an external appliance (such as a foot pedal). This option can
also be used to open the mic on the Main Station. You can use the 'mic open GPI' to talk to one or
more pre-latched channels hands-free.
The GPO (Relay), sends a signal to an external appliance (such as a light switch) that is triggered
from the 4 local keysets or (in contrast to the GPO) a signal that is not local to the selected device.
A GPO can be triggered by:
Talk or Call button press from any Channel on the system
A call signal
Detection of audio of any kind on a Channel (VOX).
Note: A GPO Trigger initiated by a Program Audio Input VOX can on only be assigned to a GPO on the
same device.
15.10.1 Editing the GPI (Opto)
1. From the top left of the Roles screen, select Main Station (HMS).
2. From the drop-down list of roles, select the role you wish to edit.
3. Select GPI (Opto).
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