You can use NI-SLSC Switch to set the channel type. Set a channel as a source channel to provide additional software protection against unintentional damage to your system. Set a channel as a configuration channel to complete connections supported by the architecture of the switch, but unsupported in software.

Note The source channel type provides additional software protection when you use channel VIs, but it does not provide additional protection when you manipulate relays directly using the SLSC Switch Relay Control VI. NI does not recommend combining these types of VI calls.

To edit a channel type, use the SLSC Switch property node.

Source Channels

Set a source channel to indicate to the driver that a signal source is connected to the channel. NI-SLSC Switch does not allow two user-defined source channels to be directly or indirectly connected.

Configuration Channels

Set a configuration channel to allow NI-SLSC Switch to use the channel for internal path creation. Creating a column-to-column connection will fail in a matrix if a row channel is not set as a configuration channel.

Note Configuration channels may also be referred to as "reserved for routing" in other switch APIs.