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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0000161 | Hall D Online | Controls | public | 2011-10-31 14:53 | 2012-04-04 15:04 | ||||
| Reporter | wolin | ||||||||
| Assigned To | wolin | ||||||||
| Priority | high | Severity | feature | Reproducibility | N/A | ||||
| Status | resolved | Resolution | fixed | ||||||
| Platform | OS | OS Version | |||||||
| Summary | 0000161: Develop scheme to isolate signals from the solenoid magnet coil taps | ||||||||
| Description | During the test we saw noise, cross-talk and baseline shifts on the coil tap voltage channels. We need to design an isolation scheme that simultaneously satisfies our need for precision, speed and voltage range for the fast and slow DAQ systems and the quench detector. | ||||||||
| Additional Information | Ideal would be to use a single isolation amplifier per tap on the platform close to the taps. | ||||||||
| Tags | No tags attached. | ||||||||
| Work by outside group for Hall D | No | ||||||||
| Estimated man-weeks | 4 | ||||||||
| Percentage complete | 0 | ||||||||
| Actual man-weeks | 0 | ||||||||
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(0000242) wolin (administrator) 2012-01-19 14:42 |
With luck the National Instruments CRio or PXI systems will solve all our problems, Yi is investigating and getting prices. |
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(0000256) wolin (administrator) 2012-01-27 10:00 |
PXI looks like the best choice, and Labview RT isn't too expensive. With PXI we won't need Labview FPGA. We seem set on licenses at the moment. Yi is still optimizing the hardware configuration and getting prices. Should have a final configuration next week. |
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(0000332) wolin (administrator) 2012-04-04 15:04 |
After research by Yi we have settled on the National Instruments PXI system for both the fast and slow daq systems. All coil taps and fast daq channels will be connected to the PXI device. Direct connections from these channels to the PLC will be eliminated. Josh and Yi were able to get the PLC to read PXI channel values. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2011-10-31 14:53 | wolin | New Issue | |
| 2011-10-31 14:53 | wolin | Work by outside group for Hall D | => No |
| 2011-10-31 14:53 | wolin | Estimated man-weeks | => 4 |
| 2011-10-31 14:53 | wolin | Percentage complete | => 0 |
| 2011-10-31 14:53 | wolin | Actual man-weeks | => 0 |
| 2011-10-31 14:54 | wolin | Status | new => assigned |
| 2011-10-31 14:54 | wolin | Assigned To | => dickover |
| 2012-01-19 14:42 | wolin | Assigned To | dickover => wolin |
| 2012-01-19 14:42 | wolin | Note Added: 0000242 | |
| 2012-01-19 14:42 | wolin | Status | assigned => acknowledged |
| 2012-01-27 10:00 | wolin | Note Added: 0000256 | |
| 2012-04-04 15:04 | wolin | Note Added: 0000332 | |
| 2012-04-04 15:04 | wolin | Status | acknowledged => resolved |
| 2012-04-04 15:04 | wolin | Resolution | open => fixed |
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Issue History |
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