Agilent Technologies 669xA Controller Connections, Stand-Alone Connections, Linked Connections

Controller Connections

Figure 4-6 shows two basic ways of connecting your power supply to a controller. They are "linked" and "stand-alone configurations.

Stand-Alone Connections

See Figure 4-6A. Each stand-alone power supply has its own GPIB bus address. Stand-alone power supplies may be connected to the bus in series configuration, star configuration, or a combination of the two. You may connect from 1 to 15 stand-alone power supplies to a controller GPIB interface.

Linked Connections

See Figure 4-6B. Up to 16 power supplies may be used at a single GPIB primary bus address by making linked connections. (You cannot use linked connections if you intend to program power supplies with the Compatibility Language - see the power supply “Programming Guide".)

■The first power supply in a linked connection is a "direct supply" connected to the controller via a GPIB cable. The direct supply is the only supply connected directly to the bus and has a unique primary bus address.

■The remaining power supplies are "linked supplies” connected to the direct supply via a serial-link cable. Each linked supply has a unique secondary GPIB address and derives its primary address from the direct supply. You may connect from 1 to 15 linked supplies to each direct supply.

Note	The power supply is shipped from the factory with its GPIB address set to 5. The power supply primary
	and secondary addresses can be changed from the front panel as described in "Chapter 2 - Remote
	Programming" of the "Programming Guide". For power supply GPIB interface capabilities, see Table
	1-5 in Chapter 1 of this guide.

User Connections 83