From edmunds@pa.msu.edu Fri Oct 12 14:19:32 2012 Date: Fri, 12 Oct 2012 14:19:25 -0400 From: Dan Edmunds To: Dean Shooltz , Carl M Bromberg , Tingjun Yang , Michelle D Stancari , Walter F Jaskierny , Stephen H Pordes Subject: Long-Bo DAQ Cables whole 9 yards Hello, This note is a quick description of the cabling on Long-Bo that connects: - the output of the cold CMB-16 cards to the Internal Readout Cables and thus to the cold side of the Signal Feedthrough card - the warm side of the Signal Feedthrough to the External Readout Cables and thus to the input of the WRP-16 cards that are mounted in a card file immediately adjacent to the signal feedthrough - the output of the WRP-16 cards to the Gray PFC cables that run over to the back of the VME crate and plug into the small Long-16 cable transition cards that plug into the back of the VME crate. The channels in Long-Bo are identified by their "Wire Number". - Wire Numbers 1:48 are the 1st Induction plane A - Wire Numbers 49:96 are the 2nd Induction plane B - Wire Numbers 97:144 are the Collection plane C - Wire Numbers 145:160 are the Patch Panel NIM Inputs In the event readout file the 4096 samples for each of these 160 Wires appear in natural order, i.e. the wires are readout in numeric order and oldest sample for a given wire is readout first. Looking down on the TPC from the top, and going around in a clockwise direction, the CMB-16 cards are organized in the following way: Wire Internal Readout Number Plane Cable Label -------- ------- ---------------- 1:16 1st Ind 3T 17:32 1st Ind 3B 33:48 1st Ind 4T 97:112 Collection 6T 113:128 Collection 6B 129:144 Collection 7T 49:64 2nd Ind 4B 65:80 2nd Ind 5T 81:96 2nd Ind 5B Note that the Internal Readout, External Readout, and Gray PFC cables are all labeled in the same way, that is: 3T, 3B, 4T, 4B, 5T, 5B, 6T, 6B, 7T, 7B. These labels refer to the Top or Bottom half of the J3 through J7 connectors on the Signal Feedthrough card. These 100 pin Signal Feedthrough connectors have a Top and Bottom half because these 100 pins are used 50 at a time to service a given 16 channel CMB-16 card or WRP-16 card. This labelling is uniform through out the system. For example the labels on the: Internal Readout, External Readout, and Gray PFC cables that service Wire Numbers 1:16 are all 3T. Special Cases - Cables Labeled 7B: - The Internal Readout and External Readout cables that provide the digital setup/control to the special CMB-16 card with the BNL ASIC on it are labeled 7B. Internal Readout cable 7B goes to a special connector on the cold CMB-16 card with the BNL ASIC on it. External Readout cable 7B goes to a small metal box that will be mounted on the side of the WRP-16 card file. This small metal box holds the electronics to send setup/control signals to the BNL ASIC. - The Gray PFC cable labeled 7B carries the Wire Number 145:160 signals and runs from the NIM Input Patch Panel to the Long-16 cable transition card in the back of slot 14 of the VME crate. Slots in the VME Crate: The slots in the VME crate are used in Wire Number order. Crate Slot Gray PFC Wire Numbers ADF-2 Card Number Cable Label Readout Serial Numb. ------ ----------- ------------ ------------ 1 This is the "Bit-3" interface card with the long orange fiber optic cable to the DAQ computer. 2:4 Not used - Covered for safety and air flow control 5 3T 1:16 A21 Maestro 6 3B 17:32 A20 7 4T 33:48 B18 8 4B 49:64 B19 9 5T 65:80 B20 10 5B 81:96 B21 11 6T 97:112 A17 12 6B 113:128 A18 13 7T 129:144 A19 14 7B 145:160 B17 NIM Inputs 15:21 Not used - Covered for safety and air flow control My hope is that this is a simple easy to understand cable setup. Please let me know if there are any questions. Except for the setup/control cable for the BNL ASIC there have been no changes since this system was tested in the Pole Barn in early September. There have been no changes to the event file readout data format since the example files for Long-Bo were made in September. Thanks, Dan