Recent Activities:

1
HallD Collaboration Meeting Jefferson
Lab December 11-13, 2003 R. Chris
Cuevas Jefferson Lab Physics Division Group
Leader -- Fast Electronics
Recent Activities F1-TDC Production
News VME Discriminator/Scaler Module
2
F1TDC Production Progress

• Order placed for fifty (50) modules in
  September 2003
• Contract awarded to Catalyst Manufacturing,
  Inc.
• Site visit on November 6th, 2003

3
F1TDC Production Progress

• Site Visit Photos 6-Nov-2003

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5
F1TDC Test Details

• Two 1st 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.
• F1 will require further testing before loading
  on-board EEPROM with final initialization data.

6
New Product VME Discriminator/Scaler
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VME Discriminator/Scaler Specification Highlights

• 16 Coaxial Analog Inputs -- DC coupled --
  /-2.5V -- 50 Ohm Termination
• VME Programmable Threshold Common -- 12 Bit
  DAC
• VME Programmable Pulse Width -- 8nS to 100nS
• VME Programmable Delay Discriminator Output
  0nS to 250nS -- 8nS step size
• 2 Scaler Gates -- NIM level
• 2 scalers per discriminator channel used with
  Gate1 and Gate2
• 32 bit scaler width
• Analog multiplexer -- 116 -- VME control to
  monitor analog input signal
• Discriminator Output --gt Differential ECL on
  standard 17 pair cable to TDC
• Read Registers for all voltages and temperature
  of module
• Single width 6U VME module format