Keysight Technologies E4360 Series User Manual

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Installation 2Series E4360 User’s Guide 33Connecting Outputs in ParallelWARNING Only connect output modules in parallel that have identical modelnumbers and optionsOutput channels can be paralleled to obtain increased output current.There are two ways to implement this: direct-parallel and auto-parallel.Parallel Method Description ConnectionsDirect-ParallelRecommended for SASand Table modes. Providessimple, direct connectionsUp to four output channels (modules)connected in parallel. Each outputchannel must be programmedindividually to source or query its shareof output current.Parallel output terminalstogether. Parallel sense terminalstogether when remote sensing.Auto-ParallelRecommended for Fixedmode operation. Ensuresthat the output current ofthe paralleled modules isaccurately matchedUp to four output channels (modules)connected in parallel. The programmedcurrent value is directed only to theoutput referred to as the “master”output. This output must be channel 1in one of the mainframes. All otherparalleled outputs, referred to as“follower” outputs, track the outputcurrent of the master output.Parallel output terminalstogether. Parallel sense terminalstogether when remote sensing.Connect the currentprogramming analog connectorpins for auto parallel operation.Direct-Parallel ConnectionsNOTE For the firmware to correctly control the paralleled output channels,you must specify that the output channels are connected in direct-parallel.Refer to chapter 4 under “Configuring Paralleled Outputs”.Direct-Parallel in SAS and Table modeThis is the simplest way to implement parallel connections. In mostcases, outputs can be connected in direct-parallel mode as shown in thefollowing figures without any master/follower distinction, and withoutany wiring to the analog connectors. This is possible because of therelatively high output impedance of each output channel when operatingin SAS and Table modes. This method also provides better currentprogramming accuracy with paralleled outputs.In SAS and Table mode, each output must be programmed with identicalI-V curve or table data. With Lists, each output must receive the samelist. The trigger signals used to change list steps must be received at thesame time. Remote sensing may be employed on all outputs if desired,but in many cases will have only a minimal effect on performance due tothe high output impedance of each output.The following figure shows four outputs connected directly to the load.