Keysight Technologies 34931A User Manual

Keysight Technologies 34931A User Manual Manual pdf 10 page image

10 Keysight 34931A-34933A User’s GuideOperating ConsiderationsConnection to Voltage SourcesAlthough flexible, it is possible to connect more than one source at the same timewith a matrix. Make sure that dangerous or unwanted conditions are not createdby these connections.Electrical ConsiderationsSee the Introduction to the Plug In Modules chapter of the 34980A MainframeUser’s Guide for detailed environmental operating conditions for the 34980Amainframe and its installed modules. That guidance sets maximum per channelcurrent and power ratings at rated voltage for pollution degree 1 (dry) andpollution degree 2 (possible condensation) conditions, for each of the matrixmodules.NOTE Safety Interlock The Analog Buses of the 34980A are capable of carrying300V signals. The matrix modules have a hardware Safety Interlock feature thatautomatically opens the Analog Bus relays when the associated interlock pins onthe D-sub connectors (faceplate) lose continuity. This prevents signals on theAnalog Buses from being present on the D-sub connector pins. Optional terminalblocks available from Keysight automatically provide continuity for theseinterlock pins. If cables are used, you must provide continuity for the interlockpins in your DUT assembly. See the pinout information later in this manual forthe location of interlock pins on each module.The matrix modules have Analog Bus relays on Bank 2 only. Therefore, theinterlock pins are present on only the Bank 2 D-sub connectors.Normally, if you attempt to connect to the Analog Buses withouta terminal block or cable connected, an error is generated. TheSYSTem:ABUS:INTerlock:SIMulate command allows you to temporarilydisable errors generated by the Safety Interlock feature and enables thesimulation mode. Although Safety Interlock errors are suppressed in this mode,the actual Analog Bus relays affected by the Safety Interlock are disabled aslong as no terminal block or cable is connected to the module.