Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 19Installing VXI Instruments Getting StartedInstalling VXI InstrumentsThe Keysight E840xA mainframes have 13 slots labeled 0 through 12. Any VXIinstrument can be installed in any slot; however, slot 0 is reserved for devicescapable of providing the system’s slot 0 functionality. This functionality includes:– locating instruments installed in the mainframe– managing (arbitrating) data flow across the backplane– providing the system clock (SYSCLK - 16 MHz)Examples of these devices are the Keysight E1406 Command Module andembedded controllers such as the Keysight E623x series VXI Pentium PCs, theKeysight RADEPC7B PC, and the Keysight E1497/E1498 V743 controllers.Multiple instruments which combine to create a virtual instrument (e.g. ascanning multimeter), and instruments which access the backplane local busshould be installed in adjacent slots.1 To prevent damage to the VXI instruments, turn off the mainframe prior toinstalling the instruments.2 Insert the instrument into the mainframe by aligning the instrument with thecard guides inside the mainframe. Slowly push the instrument into the slotuntil it seats in the backplane connectors. The front panel of the instrumentshould be even with the front edges of the mainframe.3 Tighten the retaining screws on the top and bottom of the module.All instruments within the VXI mainframe are groundedthrough the mainframe chassis. During installation, tightenthe instrument's retaining screws to secure the instrumentto the mainframe and to make the ground connection.
