Agilent Technologies N6700 Output Groups, Front Panel Scpi Command Select System\Groups, Systreb

4 Operating the Power System

Output Groups

	The ability to group outputs is only available on power system mainframes with
NOTE
	firmware revision B.00.00 and up.
	Output channels can be configured or “grouped” to create a single
	output with higher current and power capability. Almost all
	instrument functionality is supported by grouped channels, including
	voltage and current programming, measurements, status, step and
	list transients. The following conditions apply for grouped channels:
	Up to four output channels can be grouped per mainframe.
	Output channels that are grouped must also be connected in
	parallel as described in Chapter 2.
	Grouped channels do not have to be adjacent, but they must have
	identical model numbers and options installed.
	The maximum output current is the sum of the maximum of each
	channel in the group.
	Low current measurement ranges should not be used with
	grouped channels, otherwise a measurement overload error will
	occur. Low current output ranges, however, can be used.
	Over-current protection delay has a slightly slower response time
	(~10 ms) and slightly less resolution than an ungrouped channel.
	When output channels have been grouped, they are addressed
	using the channel number of the lowest channel in the group.
	Power limiting should not be used when Agilent N673xB, N674xB,
	and N677xA power modules are grouped. Refer to Appendix C.
	Front Panel:	SCPI Command:
	Select System\Groups.	To configure a group of channels:
	In the matrix that appears, select	SYST:GRO:DEF (@2,3,4)
		This groups channels 2 through 4. To
	the channels you want to group.
	Each row defines a separate group.	address the group, use channel 2.
	To return grouped channels back to an ungrouped state, first remove
	the parallel connections between channels and proceed as follows:
	Front Panel:	SCPI Command:
	Select System\Groups.	To ungroup all channels:
	In the matrix, place each output	SYST:GRO:DEL:ALL
	channel in its own separate group.
	Reboot the unit for the grouping or ungrouping changes to take effect.
	Front Panel:	SCPI Command:
	Cycle AC power.	SYST:REB

62 Series N6700 User’s Guide