The setup consists of two different components - the optoboard/front-end side and the FELIX side. These instructions follow the setup starting from the front-end connection and building up to the FELIX side. More details on each of the parts used in the setup are listed below, and a parts list is provided here: https://docs.google.com/document/d/1C2VTuJMVG3oAoSJuLzxDOFQWmv2cizWBxGV6pBf5EfY/edit?usp=sharing.
(1) Connect the front-end electronics (such as a SCC or quad module) to an adapter board with a DP to DP cable. Schematics for several adapter boards are shown below. For simplicity of mapping connections it is recommended for an initial setup to choose a port that maps to TX line 0 and RX line 0 (e.g. for a Zaza board, the second port). Information about powering a chip can be found here <>.
(2) Connect the adapter card to the optoboard. Different optoboards have different requirements for powering depending on whether or not they have an oboard BPOL converter. If they have a BPOL converter, only one input voltage needs to be applied, if the optoboard has no onboard BPOL, two voltages will need to be applied. Information about the optoboard setup and required voltages can be found here <>. For an optoboard v4 with an onboard BPOL, a single 2.5 V source (max. recommended current 1A) should be supplied. A TFM power connecter is used to power the optoboard and may need to be custom-built by the user depending on the powering needs.
(3) Connect an MT-MTP connector to the end of the fiber cable on the optoboard to attach 1xMT12 to 12 breakout channel optical wires. Thse cables should then be attached to a patch panel paying careful attention to
Schematic:
https://github.com/zazachubin/RD53B_Quad_6DP_to_ERF8_Data_Adapter/blob/master/Docs/RD53B_Quad_6DP_to_ERF8_Data_Adapter.pdf
Project:
https://github.com/zazachubin/RD53B_Quad_6DP_to_ERF8_Data_Adapter/tree/master
You should take in account mapping of the display cable, between
ZIF-DP-adapter to 6DP-adapter:
Also here is 6DP-adapter users mapping for FELIX:
Optoboard uplinks and downlinks configuration:
Rx inversion Tx default for ITkPix module
Rx default Tx default for RD53A module
An example optoboard configuration for ITkPix module can be found here.
1. RD53B Pixel Quad module
2. Display port to display port cable
3. Adapter board
Resources:
ERF 8xDP adapter channel routing (https://gitlab.cern.ch/bat/optoboard_felix/-/wikis/ERF-8xDP-adapter-channel-routing)
ERF 8xDisplayPortV2 schematics (https://gitlab.cern.ch/itk-pixel-electronics/services/optosystem/-/blob/master/ERF-8xDisplayPort/ERF-8xDisplayPortV2_schematics.pdf)
4. Optoboard
An actual optoboard, from the front and the back side, are shown here:
The rectangular hole on the board is the missing bPOL2V5 DC/DC convertor. So this means that we need to supply the 1.2 V also to the board, in addition to 2.5 V supply, directly from outside. The pinout schematics for the power connector and the LpGBT powering scheme (with 1.2 V supply) can be found here - https://gitlab.cern.ch/itk-pixel-electronics/services/optosystem/-/blob/master/G6341_OptoBoard_V2_1/OptoBoard_V2_1_Schematic Prints.PDF
The pin definition for GBCR (also requires 1.2 V) can be found here - https://edms.cern.ch/ui/file/2384089/2.1/GBCR2_user_manual_v2.1.pdf
The ERM8 connector pinout on the optoboard is shown below:
Credit: https://edms.cern.ch/ui/file/2379183/1/AT2_IP_MG_0010_v2.5.pdf
VTRx+ module pigtail to MTP12 optical interface specifications:
Credit: https://edms.cern.ch/ui/file/1719329/1/VTRxPlus_spec_v2.6.pdf
Note:
For the LBL setup, we set (1.25V, 3A) for channel 1 and (2.5V, 0.5A) for channel 2 from power supply.
5. TFM power connector
The power connector has 8-pins and the pinout definition is shown in the image below.
The image of the actual power cable crafted in accordance with the appropriate connections is shown below.
6. MT-MTP connector
Product description:
Adapter Fiber Optic Connector MPO Receptacle To MPO Receptacle Panel Mount, Flange (2 Hole)
(https://www.digikey.com/en/products/detail/molex/1061141100/2421498)
7. 1xMT12 to 12 LC cable
Product description:
Customized 8-144 Fibers Senko MPO-12 OM4 Multimode Elite Breakout Cable, Fibers count = 12 (1x12F)
(https://www.fs.com/products/31102.html)
8. Patch panel
Product description:
FHD Fiber Adapter Panel, 24 Fibers OM4 Multimode, 12 x LC UPC Duplex (Aqua) Adapter, Ceramic Sleeve
(https://www.fs.com/products/41998.html?attribute=4471&id=199443)
9. 2xMTP12 to 2x12 LC (12 Rx, 12 Tx)
Product description:
Customized 8-144 Fibers Senko MPO-12 OM4 Multimode Elite Breakout Cable, Fibers count = 24 (2x12F)
(https://www.fs.com/products/31102.html)
10. MTP-MTP connector
Product(s) description:
11. FELIX board
Product description:
FLX-712 (BNL-711 V2) board
The FELIX card hosts 4 MiniPOD transmitters and 4 MiniPOD receivers, as seen above. Each MiniPOD has 12 channels. The FELIX board at LBNL is a slight modification of the above board with only 4 MiniPODs instead of 8 MiniPODs. Hence, instead of 48-channel configuration, we have 24-channel configuration always. The fibre mapping of the two MiniPODs to the MTP24 couplers in the 24-channel configuration is shown below:
Whereas, for a 48-channel connfiguration i.e. with 8 MiniPODs, a MTP48 coupler is used. The corresponding fibre mapping of the MiniPODs connected to the MTP48 coupler is shown below:
The pin assignment for 24-channels configuration with 4 MiniPODs, looking from the FELIX-side, is shown below:
The pin assignment for 24-channels configuration with 4 MiniPODs, looking from the MTP24 coupler-side, is shown below:
Similarly, the pin assignment for the 48-channel configuration, from both sides, can be seen in Figures B0.5 and B0.6 in the above hyperlink.
12. C.A.E.N. High Voltage supply