News

FMC ADC 100M 14b 4cha: 08-09-2010: Testing continues

Added by Erik van der Bij about 11 hours ago

The ADC board is extensively being tested. The harmonics problem seen was actually caused by the signal generator used. The I2C bus is tested and accessing the EEPROM memory, setting the sampling frequency and making temperature measurements are now possible. There appeared an issue with linearity in the 30-90 kHz region caused by offset compensation circuit. This issue, which is repeatable by simulation, is under investigation.

Simple PCIe FMC carrier (SPEC): 07-09-2010: Schematics review held

Added by Erik van der Bij about 11 hours ago

The third schematics review of the Simple PCI Express FMC carrier has been held. Some improvements and simplifications of the schematics are required, after which the PCB layout can be started.

NanoFIP Test Board: 30-08-2010: Presence and id variables read

Added by Javier Serrano 7 days ago

OHR Support: OHWR maintenance on 2010-09-03 morning (Friday)

Added by Francisco Juan 7 days ago

We'll be performing upgrade tasks on the ohwr.org site.

The maintenance work will start around 8:30 am CEST and the site will be down for 30 minutes (approximately).

OHR Support: OHWR maintenance on 2010-08-23 morning (Monday)

Added by Francisco Juan 20 days ago

We'll be updating ohwr.org for allowing Git repositories.

The maintenance work will start around 8:30 am CEST and the site will be down for 30 minutes (approximately).

OHR Support: OHWR maintenance on 2010-08-06 morning (friday)

Added by Enrique García about 1 month ago

We'll be performing upgrade tasks on the ohwr site tomorrow morning.

The maintenance work will start around 8:30 am CET. The site will be down for 1 hour. (This figure is approximate, given the complexity of the upgrade)

FMC ADC 100M 14b 4cha: 4-08-2010: The board is working

Added by Erik van der Bij about 1 month ago

Since mid July we have one board plugged in on Xilinx development kit and powered. Two channels are working as limited by Xilinx development kit clock connections (we'll change our FMC connections on a V2 to cope with this). Some changes are needed to solve thermal problems. The ENOB & SNR are measured: >11 bits in all ranges. However, there seem to be still a problem with the harmonic distortion that is with -60dB somewhat higher than expected.

NanoFIP Test Board: 22-07-2010: Test board validated

Added by Erik van der Bij about 1 month ago

The test board and the software has been validated. It is now ready to accept the first version of the NanoFIP code to start testing the WorldFIP functionality.

OHR Support: The Open Source Hardware Draft v0.3 is out

Added by Enrique García about 1 month ago

The Open Source Hardware Draft v0.3 is out.

This license was produced by the holders of the Open Source Hardware Summit.

The estimated date for the release of v1.0 is September the 24th 2010.

The number of Open-hardware companies is increasing, and they altogether are already worth millions .

Conv TTL NIM 3in 30out: Schematics ready

Added by Matthieu Cattin 2 months ago

The schematics is now ready for review.
Check the schematics review page [[SchReview|Schematics review]].

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