The address of an instrument on the GPIB bus.

Input Format:

An integer between 0 and 30 (inclusive).

Context:

Most expensive measuring instruments such as oscilloscopes and power meters can be controlled and monitored under computer control via a GPIB bus. Up to 30 devices can be daisy-chained on a GPIB bus, so to control any particular device one needs to know its GPIB address. This is a number between 0 and 30 that is usually set from the front panel of the instrument. Variables of type GpibDev are used to specify such addresses to the gpib_read() and gpib_send() commands.