Hall D Collaboration Meeting Jefferson Lab December 11

Hall. D Collaboration Meeting Jefferson Lab December 11 -13, 2003 R. Chris Cuevas Jefferson Lab Physics Division Group Leader -- Fast Electronics Recent Activities: F 1 -TDC Production News VME Discriminator/Scaler Module 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 1

F 1 TDC Production Progress Order placed for fifty (50) modules in September 2003 • Contract awarded to Catalyst Manufacturing, Inc. • Site visit on November 6 th, 2003 • 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 2

F 1 TDC Production Progress • Site Visit Photos 6 -Nov-2003 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 3

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F 1 TDC Test Details • Two 1 st Article Boards will be inspected and tested thoroughly • After JLAB approval, remaining 48 boards will be assembled • Test ‘station’ has been prepared. FPGA code will have to be loaded on each board. • DAQ routines are established and will provide functional testing for each production board. • Full crate testing and multi module [Block Read] testing will also be performed. • F 1 will require further testing before loading on-board EEPROM with final initialization data. 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 5

‘New Product’ VME Discriminator/Scaler 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 6

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VME Discriminator/Scaler Specification Highlights • 16 Coaxial Analog Inputs -- DC coupled -- +/-2. 5 V -- 50 Ohm Termination • VME Programmable Threshold [Common] -- 12 Bit DAC • VME Programmable Pulse Width -- 8 n. S to 100 n. S • VME Programmable Delay [ Discriminator Output ] 0 n. S to 250 n. S -- 8 n. S step size • 2 Scaler Gates -- NIM level • 2 scalers per discriminator channel used with Gate 1 and Gate 2 • 32 bit scaler width • Analog multiplexer -- 1: 16 -- VME control to monitor analog input signal • Discriminator Output --> Differential ECL on standard 17 pair cable to TDC • Read Registers for all voltages and temperature of module • Single width 6 U VME module format 9/3/2021 Hall D Collaboration, December 2003 --R. C. Cuevas 8