# Use case: Using SDI direct input in a profile and channel
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You might want to specify an SDI direct input in your profile and channel. When you choose this type of input, two supplementary fields appear—the **Device ID** field and the optional **Device Settings**. 

The **Device ID** field must be set up as a channel parameter. You can't enter a real ID.

To set up this field, follow this procedure. This procedure assumes that you have already read [Working with channel parameters in a profile](creating-a-profile-with-channel-parameters.md).

1. When you create the profile, complete the following fields in this way:
   + **Input Type**: Choose **SDI Direct Input**.
   + **Device ID**: For the value, create a channel parameter as described in the section [Working with channel parameters in a profile](creating-a-profile-with-channel-parameters.md).

     Assign any name, but do not create a name consisting only of a number. For example, create a channel parameter with the name **SDI\_direct\_input**.

     In the **Parameters** panel, leave the validation value empty. A validation value is not required for the **Device ID **field.
   + **Device Settings**: Always leave this field empty.

1. When you create the channel, complete the following fields in this way:
   + **Node**: Choose a node that has an SDI direct input attached to it.
   + **SDI Direct Input Device Id**: Note that the field name appears with this label. It doesn't appear with the label **Device ID**. 

     From the list, choose one of the SDI interfaces that is attached to the node that you chose. 
   + **Device Settings**: Choose a value, if one is applicable to this input.