The CPU030 may need to have the nivxi path set correctly: From the vxWorks shell type "vxitedit" (you may need to loading the NI vxitedit package first) take option 2 take option 3 type list type modify 0 type in the correct path when promped (the path should end in nivxi and should traverse the niCpu030 directories shipped with the 030 ie something of the form "???/config/niCPU030/nivxi" type save type exit . . . see "Getting Started with Your VXIcpu-030" from NI You may may need to setup front panel to backplane trigger routing: To take a TTL input and map it to VXI backplane ECL trigger 0 type in (to the vxWorks shell): epvxiRouteTriggerECL(<logical address>, 1, 0) where <logical address> specifies the card with the front panel trigger connection. johill@lanl.gov