• CDS
• August_CDS_test

August CDS Tests

• The idea is test out the suspension controls for the vertex suspensions. This includes BS, PRM, SRM, ITMX, ITMY, MC1, MC2, and MC3. This is to replace the c1susvme1, c1susvme2, and c1sosvme machines with a single c1sus computer and IO chassis.

Plan

To do List

• Hardware installation

  • installation of C1SUS and its settings

  • mount the ADC/DAC/BIO boards and IO expansion chassis

• Order some cables

  • list up the necessary cables

  • order SCSIs

  • order IDC40 flat cables and 37 pin D-sub male connecters

  • order 3 pin power cables

    • more information about the ordering are available here.

• Make the cables

  • 37 pin D-sub cables (3 meter long)

  • three 37 pin D-sub female to 40 pin IDC cables (1.5 meter long)

  • 3 pin power cables

    • we need some back shells for the connector heads

• Cable Inspection and Wiring

  • draw a diagram for wiring

    • the drawings can be found here

  • check DAC cable length

  • check BO cable length

  • Switching over cabling from the current XY220's, Pentek ADCs and ICS 110Bs, and the Pentek DACs to our new system.

• Develop the model files

  • IOP file

  • create (copy) the control model file

    • Notes_on_getting_the_CDS_Realtime_Code_Generator_working

  • make a list for channel assignment

    • ADC/DAC/BO channel assign list

  • run the code

  • fix the control model file if there are any bugs

• timing/ADC/DAC/BO test

  • timing board test

    • looks like running

  • test all the ADC channels and their assignments

  • test all the DAC channels and their assignments

  • test all the BO channels and their assingments

• Conversion of the filter coefficients

  • copy the coefficients to the new CDS

  • load the coefficients

    • Some notes are available here

• Modification of AA filter box

  • measure the box size

  • order the box extension (or extension cables)

  • install the extension

• Damping test of the suspensions

  • PRM damping test

  • All the suspension test

• Test of the new Reflective Memory Network

  • string the RFM optical fiber connecting C1SUS and C1ISCEX

  • install PCI-5565 driver

  • test the RFM card by running the diagnostic script on the individually

  • test the RFM with the epics

Timeline Schedule

• The table below shows the timeline schedule of this test. It ends at 13th August ideally.

  • 

Detailed Considerations

Channel Assignment and Model files

• A wiring guide, to determine what plugs in where so we know what ADC/DAC/BO channels correspond can be found at:

  Upgrade_09/CDS/Suspension_wiring_to_channels

Suspension wiring

• Basically all the cables for the ADCs and DACs are no

Zipped original drawing file written in Omnigraffle

Conversion of the filter coefficients

• To convert the filter coefficients the filter files that live in

  • /cvs/cds/rtcds/caltech/c1/chans

• should be updated. The  C1***.txt file contains all the filters (originally empty).

• In order to transport the coefficients from the old front end machines, we need to look at the files in

  • /cvs/cds/caltech/chans/ 

• and port over the approriate filters to C1***.txt.

Information about ordering and Cable Standards

SCSIs cables

• A SCSI type called HD 68 (High Density 68 pin) is used. It's sometimes categorized as a D-sub because it has a D-shape at the end.

The table below is the status of the ordering

37 pin D-sub

• The type of the flat cables is IDC 40 which has a conductor pitch of , and AWG of .

3 pin power cable for the Binary I/O board

Links

• back to page top

• new CDS page

• Electronics page

• Upgrade_09/CDS/September_CDS_plan