Archived Messages for EGN_CALCOM_1997@cebaf.gov: Cabling errors

Cabling errors

Lee Cole Smith (cole@apollo.phys.Virginia.EDU)
Wed, 12 Mar 1997 10:08:11 -0500

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Lee Cole Smith: "correction"
Previous message: STEPANYAN@CEBAF.GOV: "New ECCL.bfp and some changes in EC."

Examination of the EC tdc and adc hitmaps has
revealed cabling errors in Sector 6. Specifically,
two pair of ribbon cables from the splitter to the TDC
discriminators were swapped as follows:

WI9-WI24(Sector 6) was swapped with UO5-UO20(Sector 6)
WO29-WO36(Sector 6) was swapped with UI16-UI32(Sector 1)

This condition was repaired as of yesterday (Mar 11).

No data were actually lost since the Sector 1 TDC was read
out. However, hitmaps or results based on TDC cuts will
appear to have holes in these strips (or for pixels which
depend on these strips).

The ADC cabling appears to be ok so my advice would be to
avoid TDC cuts for all analysis.

There are also holes in Sector 3 and 5 tdc hitmaps which
I am investigating.

Cole Smith
cole@apollo.phys.virginia.edu

Next message: Lee Cole Smith: "correction"
Previous message: STEPANYAN@CEBAF.GOV: "New ECCL.bfp and some changes in EC."