VRB Card Count ------------------ Rev. 20-AUG-1997 Hi Marvin, The following is my current understanding of our needs for VRB cards. Cost CURRENT Estimate Readout VRB Board VRB Board Function Count Count WBS Number --------------- --------- --------- -------------- L1 Framework 10 11 1.4.1.2.1.13 L2 Framework 2 5 1.4.1.3.1.7 Foreign Scalers 2 5 1.4.1.4.1.3 L1 Cal Trigger 11 8 1.4.3.1.3 Test System 2 0 1.4.1.2.1.13 at MSU + + ------ ------ TOTAL 27 29 So my current total is 27 VRB cards. This number has no padding and no spares in it. Comparing 27 to the number used in the cost estimate the total looks pretty stable although the actual usage has moved around somewhat. Thanks for taking care of all of this VRB stuff, Dan L1 Framework: VRB Channel Count 4 for gated scalers 7 for TRM crate 16 for TDM crate 10 for FOM crate This is 37 channels ---> 10 VRB cards with 3 spare channels L2 Framework: VRB Channel Count 3 for TRM's 4 for FOM's This is 7 channels ---> 2 VRB cards with 1 spare channels Foreign Scalers: VRB Channel Count 8 for Gated Scalers This is 8 channels ---> 2 VRB cards with 0 spare channels L1 Cal Trigger: VRB Channel Count 40 i.e. 4 channels for each of 10 racks 1:4 to readout the jet lists This is 41:44 channels ---> 11 VRB cards with 0:3 spare channels MSU Test Rack: VRB Channel Count 2 VRB cards (i.e. want more than just one card.