Model 2461 Interactive SourceMeter® Instrument Reference Manual Section 2: General operation2461-901-01 A/November 2015 2-55Figure 38: Model 2461 top and side dimensions with handle and bumpers removedRemote communications interfacesYou can choose from one of several communication interfaces to send commands to and receiveresponses from the Model 2461.You can control the Model 2461 from only one communications interface at a time. The first interfaceon which it receives a message takes control of the instrument. If another interface sends a message,that interface can take control of the instrument. You may need to enter a password to change theinterface, depending on the access mode.The Model 2461 automatically detects the type of communications interface (LAN, GPIB, or USB)when you connect to the respective port on the rear panel of the instrument. In most cases, you donot need to configure anything on the instrument. In addition, you do not need to reboot if you changethe type of interface that is connected.