Keysight Technologies 34931A User Manual

Keysight Technologies 34931A User Manual Manual pdf 17 page image

Keysight 34931A-34933A User’s Guide 1734931A Dual 4x8 Armature MatrixThe 34931A dual 4x8 armature matrix contains two matrices, each with 32 2-wirecrosspoint latching armature relays organized in a 4-row by 8-columnconfiguration. Every row and column are made up of two wires each, a high (H)and a low (L). Each crosspoint relay has a unique channel number representingthe row and column that intersects to create the crosspoint. For example, channel304 represent the crosspoint connection between row 3 and column 4 (allcolumns consisting of two digits; in this case the digits are 04). See the simplifiedschematic on page 18.You can connect any combination of inputs and outputs at the same time.However, only Matrix 2 in this module connects to the Analog Buses. By closingchannels 921 and 922 you can connect rows 5 and 6 respectively to the internalDMM of the 34980A mainframe for voltage and resistance measurements. Youcan connect multiple matrix modules externally and/or through the Analog Busesfor applications that require large matrices. For information on linking multiplematrices, refer to page 15 of this manual.When the power is off, matrix relays maintain state, and Analog Bus relays open.NOTE When the DMM is scanning, it controls ABus1 and ABus2 relays, which are onMatrix 2. Therefore, consider this behavior when you are connecting matrices.