Port On/Off
Port is a general purpose output port that can be used to control an external device such as a relay for power supply test purposes. The output is toggled on and off via the GPIB (PORT0 ON OFF command). It cannot be controlled from the front panel.
The Port output signal is a TTL compatible signal that becomes active (high level) when the PORT command is programmed ON and becomes inactive (low level) when the PORT command is programmed OFF.