eRTM15 LLRF White Rabbit
Project description
The eRTM15-LLRF-WR project is composed by two MTCA eRTM modules: a WR
Node module and a RF module.
The WR node is a eRTM module, designed to be inserted into eRTM Slot 14,
with a redundant fiber connection to a White Rabbit network. It controls
the RF module through a board-to-board connector.
The RF module is designed to be inserted into eRTM Slot 15. It provides
clocks and LO/REF signals through the specific LLRF backplane to µRTM
and AMC
slots.
Main Features
- Kintex-7 FPGA on WR Main board
- Redundant WR link connection
- Deterministic gigabit tranceiver (GTX) with hardware support for calibratoin
- Control of the RF board through board-to-board connector
- Front panel of WR Main board
- 2 SFP cages for White Rabbit input
- PPS input and output connectors (SMA)
- 10 MHz input (SMA)
- WR clock output (SMA)
- USB serial monitor
- Front panel outputs of RF board
- RTM clocks CLKA and CLKB
- 2 LO Monitor
- 2 REF Monitor
- Zone-3 backplane connector of RF board
- 11 RTM_CLKA signals (62.5 MHz, 100 MHz, 125 MHz, 200 MHz, 250 MHz, 500 MHz)
- 11 RTM_CLKB signals (62.5 MHz, 100 MHz, 125 MHz, 200 MHz, 250 MHz, 500 MHz)
- LVPECL clock signals with double termination, unused clocks can be shutdown
- Possibility to encode PPS and time-code information into CLKA and CLKB
- Less than 100 fs RMS jitter (100 Hz - 5 MHz)
- LO/REF/CAL backplane of RF board
- 9 LO signals, 100-400 MHz, 12 dBm
- 9 REF signals, 100-400 MHz, 12 dBm
- Less than 100 fs RMS jitter (100 Hz - 5 MHz)
- RF power monitoring on all backplane RF signals
- Unused RF channels can be internally terminated
- Temperature sensors on LO and REF distribution sections
- Unique IDs
- Three EUI-48 (MAC addresses) on WR Main Board (two for Ethernet links, one for storage)
- One EUI-48 ID for RF board (storage)
- STM32F microcontroller for MicroTCA management
- Running FreeRTOS
Detailed project information
- " µTCA 4.1 for LLRF distribution using WR":https://www.ohwr.org/project/ertm15-llrf-wr/uploads/3542cbca2ee859250d168d9e14b7731b/llrf_section_review_public.pdf presentation with main concepts described
-
MicroTCA.4
RF-Backplane
- Note: the backplane is not an open design and needs licensing from DESY. Patent application is filed: EP142004371.
Contacts
Commercial producers
- none
General questions about project
- Tomasz Wlostowski, CERN
Status
Date | Event |
12-07-2017 | Presentation given by Mattia |
01-08-2017 | Start of schematics |
25-10-2017 | OHR project set up |
08-04-2018 | Final schematics ready for review |
25 October 2017