| Version 9 (modified by , 19 years ago) ( diff ) |
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Introduction
TracNav
- CROC
- Status of the Electronics at the Pit
- Front-End Board
- Backplane
- Radiation Tolerance
- Documents
Problems identified
- Inversion of the SDA and SCL signal between the LV010 (near RJ45 of the front face of the CROC) and the SPECS Mezzanine connector
- Adaptation of the SPECS Signal in the case when the SPECS Mezzanine is simply a repeater
- Polarisation of the 2 drivers going to the backplane for specs sda- signals. the sda- is not well polarised and the V divider on the +sda simply changes the common mode. This leads to a bad pulse when the command to the driver is released. The sda- pin has to be polarised to GND with for example a 5k resistor. Then the sda+/- signals are well polarised.
- Correct Delatcher oscillation problem
CROC proto 3 : Fabrication status
CROC v3 prototypes : present fabrication
| CROC | Status | Download version(date) | Comment |
| 1 | Quick test | ||
| 2 | - |
Final Number of CROC to be produced
Number of CROC (v3) :
| Crate | Croc |
| ECAL | 14 = 2x7 |
| HCAL | 4 = 2x2 |
| PRS | 8 = 2x4 |
| Spare | 26 |
| Total | 33 |
- Vérifier liste des signaux TTCrq. Voir emprunt TTCvx (Atlas) au LAL
Output MCM on CROCv3 board
| FEB | FE_PGA on CROC | Chanel_MCM Optical Transmitter |
| FEB_0 | ||
| FEB_1 | ||
| FEB_2 | ||
| FEB_3 | ||
| FEB_4 |
Compte-Rendus
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