Software Support For FMC DEL 1ns 4cha
Description
Linux software support for the FMC DEL 1ns 4cha delay module described
at the
hardware project
page
The provided software comprises
- Linux device driver based on ZIO and stacked on the SPEC or SVEC driver
- User space libraries
- Documentation
Documentation
- Full details in the Functional system specifications
Specification overview
Parameter | Value |
Channels | 1 trigger input, 4 outputs |
Signal connectors | LEMO 00 for all signals |
FMC connector | Low Pin Count (LPC) |
Signal level | TTL, outputs capable of driving a 50 Ohm load, > 2 V/ns slew rate |
Operating modes |
Pulse delay: on trigger, generates a pulse or series of pulses of given width and repetition rate on chosen outputs after a certain time programmed by the user. Single channel TDC: time tags incoming trigger pulses available via a circular buffer. Pulse generator: produces a pulse or a series of pulses of arbitrary length and repetition rate starting at a given UTC/TAI time. |
Minimum input pulse width | 100 ns. Pulses below 24 ns are ignored. |
Maximum input pulse rate | 2 MHz (minimum pulse spacing: 50 ns) |
Output pulse width | 50 ns - 1 s (10 ps resolution) |
Output pulse spacing | 100 ns - 1 s (10 ps resolution) |
Output pulse repeat count (train generation) | 1 - 65536 pulses or infinity (continuous mode) |
Timebase accuracy | ± 4ppm The timebase from a local TCXO on FMC card needs calibration. The 4ppm accuracy is the one of the on-board TCXO. Cesium-quality accuracy will be reached when used on a White Rabbit enabled FMC carrier. |
TDC Resolution | 28 ps |
TDC Precision (std. dev) | 55 ps |
Accuracy | ± (300 ps + timebase accuracy) |
Time tag buffer | 1024-entries circular buffer with time tags for input/output pulses. Buffer interrupt (with timeout/threshold coalescing) |
Detailed project information
- Official production documentation (schematics, PCB, etc.): EDMS: EDA-02267
- Card aka FMC6 and Fine Delay
- LHC Equipment name: CFFIB
- Controls Configuration Database entry)
- Controls EDMS page
- Software
Contacts
General questions about project
- Juan David Gonzalez Cobas - CERN
- Alesandro Rubini - GNUDD
Project Status
Date | Event |
11-07-2012 | v1.1 Release |
Juan David Gonzalez Cobas - 11 Jul 2012