1. RPC Electronics Overall system diagram –At detector –Inside racks Current status –Discriminator board –TDC board –Remaining task

2. Altera Cyclone II FPGA Altera Cyclone II FPGA 20X4rows connectors 32 channel (Timing bin = 106ns/64) Data 32 bits L1 trigger RPC(HBD) crate/BUS structure 6Ux160 mm VME size TDCTDC TDCTDC Output To L1 Clock fanout L1 primitives L1 GTM Slow Control 8/6 TDCs TDC Output To DCM Disc. 16 channels cable input 16 channels cable input 16 channels cable input 16 channels cable input On chamber Clock Master Serial download Serial download

3. Signal flow Temporary programming jig power LVDS discriminator output CMS RPC discriminator chip RPC Discriminator board RPC TDC board DCM data L1 data Cable adapter board

4. RPC disc 32 ch 3M 6834-4500PL Or 8534-4500pl RPC TDC 64 ch Half octant Module edge Adapter Board Adapter Board 2-3 m cable ?8 meters cable ? 2-3 m cable?8 meter cable ? 3M (Gray) 3432-5302 3M (Black) 3432- 5302RB 3M (Gray) 3417-6640 3M N3432-L302RB 3M (Black) D89140-???? Signal Cable : 40 conductors twist flat ribbon cable 3M (gray) 3431-5302 3M 4640-7300 3M 1700/40 Twisted Pair, Flat Cable,.050" 28 AWG Stranded Fire rating VW-1 16 short RG174 cables Signal Cable

5. RPC discriminator power Molex 43650-0412 4 circuits 94-V0 Molex 43645-0400 UL94 V0 Molex 43030-0008 20-24 gauge wire Max. current 5A. Discriminator RPC board internally has +5 Analog, +5 Digital, +3V Digital through low drop regulators Power connector need +6V analog, +6V digital The board draws 0.42A total current (analog+digital) The current thinking is we will combine analog and digital power at the patch panel connector at RPC half octant edge. fuse

6. Molex 39012105 Molex 0015060106 4.20mm (.165") Pitch Mini-Fit BMI™ Plug 42475 series Dual Row With Panel Mount Ears 4.20mm (.165") Pitch Mini-Fit Jr.™ Receptacle 5557 series Dual Row 39012145 – 14 position (94V-0) 0015-06-0146 14 position (94V-0) ~1.5cm Inside the chamber module Panel Thickness: 1.60mm (.063") max. 12 connectors for RPC3 Chamber endLV supplies wires Half octant Module edge Power Connector Molex 46134-3212 16 gauge wires, 9A max 100 cycles mating Molex 46083-3212 16 gauge wires, 9A max 100 cycles mating

7. FEM crate ERNI 114402 2mm HM standard 9(8)A at 20 0 c per contact 94V-0 TDC  0.6A when power up ~1A at full speed 4V (3.3V and 1.2 internally) Clock fanout module ~.8A Xmit module ~.4A after power up, <1A a full speed L1 trigger output module design in progress Clock Master 0.9V at 5.5V (one per rack) 1.1A at 4V VME 6U mechanical form factor All modules has fuse

8. Analog GND +4V-3.5V 5V(4V) Digital GND HBD crate power connection (back view) with Bus Bar Clock fanout cable Meritec 980319-024(-048) UL 94V-0 Bus Bar

9. High Voltage Power supply We use CAEN SY1527LC crate supply –8 U size –RPC1N and 1S probably can just share one power supply

10. DC power distribution After half octant module, all discriminator board power(2 wires per module) should be wire to rack. –16*6 RPC discriminator for station 3 –DC power fanout at din rail mounted fuse block at the FEM rack (~1A fuse) –Do not share power supply between station. –Use Low noise converter pack (QPAC) For the FEM crate power – do not share power between crates.

12. Channel count etc… (one side) Station1a+b23total Channel3072384828729792 Channel per FEM (TDC) 64 65 FEM (TDC)486448190 Disc Board9612896380 L1 trigger Fibers 816832 FEM/ fibers646 Support board/crate 343 FEM/crate 121612 Crates44412 The crate size is like 6U VME crate. I would like to limit the length discriminator cable to 10 meters. (to be tested about jitters) The RPC2, 3, we will need to find the crate space near the detector. Crate need to be recess in the rack. Cable routing space needed in front of the crate.