In this section:Close/open overview ....................................................................................... 4-1Channel operation ........................................................................................... 4-13Identifying installed modules and viewing closed channels ............................... 4-15Break Before Make and connecting sequentially .............................................. 4-16Relay closure count ......................................................................................... 4-17Close/open overviewNOTE This section provides basic close/open information for switching module channels.Operating characteristics unique to a specific Series 3700 switching module areprovided in an instruction sheet provided with the specific switching module.Terminology used throughout this manual is detailed in the applicable sections of theuser's and reference manuals.The switching channels of a Series 3700 support a concept of "duality." This means that eachchannel has specific settings for switching and specific settings for switching with DMMoperations. The location of the specific operation request determines the setting that activates.An operation request residing in the channel logical device causes the switching settings to beused (example commands are channel.close, channel.open, channel.exclusiveclose); anoperation request residing in the DMM logical device such as dmm.close or dmm.open, causesthe DMM settings to be used. Refer to the reference manual for more information on logicaldevices (TSP section).Open a Microsoft web-browser and type in the IP address (see How do I connect to the internalweb page? located in the Quick Start Guide). The Series 3700 home page will appear. Use thishome page to see a visual representation of the present channel status (select the desired slotor model contained under "Cards").NOTE Java application may need to be installed.The Series 3700 supports opening and closing channels through either Channel operation orthrough Channel pattern operation:Channel operation (non-channel pattern operation): This mode of operation should be usedexclusively by most (if not all) users. When you close a channel for a measurement operation,other channels on the switching module close automatically to internally connect it through thebackplane to the DMM of the Series 3700. When you close a channel for a switching operation,the channel (and possibly the channel pair) will close but, no backplane relays are closed unlessassociated with the channel.Section 4Closing and Opening Switching Module Channels
