User`s manual

Alcorn McBride Digital Video Machine HD User’s Manual Rev 1.0
39
Status Outputs
In addition to 8 inputs, there are two status outputs provided on the Input/Output
connector of the Digital Video Machine. These outputs are dry-contact relay outputs
that are rated at 24 VDC and 0.9 amps. Their default function is described below.
Output
Number
Function Description
1 Playing Closed when the DVMHD is in the ‘playing’ state
2 Error Closed when the DVMHD is in the ‘error’ state
If the default functions of these relays are not useful for your application, you have the
ability to manually control these outputs using the Set Relay Output command. One
practical application is to embed this command in a playlist along with Play File
commands. This way you can close or open a relay when a video plays or stops. For
more advanced applications, the Set Relay Output command can be sent via Serial or
Ethernet command at any time.
Please refer to the Command Protocol section for details on the Set Relay Output
command.