Operation and Features 2
E364xA User’s and Service Guide 81
GPIB Interface Reference
The GPIB connector on the rear panel connects your power supply to the
computer and other GPIB devices. Chapter 1, "Accessories" lists the cables that
are available from Keysight. A GPIB system can be connected together in any
configuration (star, linear, or both) as long as the following rules are observed:
Each device on the GPIB (IEEE-488) interface must have a unique address. You
can set the power supply’s address to any value between 0 and 30. The address is
set to 5 when the power supply is shipped from the factory. The GPIB address is
displayed at power-on.
You can set the GPIB address from the front panel only.
– The address is stored in the non- volatile memory, and does not change when
power has been turned off or after a power- on reset (*RST command).
– Your computer's GPIB interface card has its own address. Avoid using the
computer's address for any instrument on the interface bus. Keysight GPIB
interface cards generally use address 21.
– The total number of devices including the computer is not more than 15.
– The total length of all the cables used is not more than 2 m times the number
of devices connected together, up to a maximum of 20 m.
– Do not stack more than three connector blocks together on any GPIB
connector. Make sure that all connectors are fully seated and that the lock
screws are firmly finger tightened.
Refer to “Configuring the Remote Interface” on page 66 for more information on
configuring the power supply for remote interface operations from the front panel.
IEEE-488 states that you should exercise caution if your individual cable lengths
exceed 4 m.