BIB

Hello , I am working with a labview program which hardware is composed from a Pickering card 40-535-021 and a keithley 2400 . i am using visa for communication The application used to work on the older chassis (NIPXI 1042Q )but when we took a newer one(NI PXI 1031) this problem happened. When the Keithley is on the program can't find the pickering card but when the keithley is off, it can find it . there is a conflict between the two . it like the program does not recognize the Pickering card properly. does any body have an idea ? Any help is welcome ! regards BIB