Scalers

Hardware Configuration

• HMS scalers are a VME crate. The cpu is hcvme05.
• SHMS scalers are a VME crate. The cpu is hcvme08.

Scaler Software

Scaler Server

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• To directly read the scalers
  • login is as cdaq on cdaql1
  • cd daq16/crl/RPC
  • execute: ./getscalers hcvme05 for HMS
  • execute: ./getscalers hcvme08 for SHMS
  • There is an option to clear the scalers, put please do not do this in the middle of the run!

Read scalers using xscaler GUI

• • Login as cdaq to cdaql1
  • cd daq16/hallc_xscaler
    • To see HMS scalers type: ./xscaler HMS
    • To see SHMS scalers type: ./xscaler SHMS
  • In the directory, the file, scaler.map, is used to map the names to the scaler crate,slot and chan.