We’re finishing up adding Logic 8 support to our automated programming and test software, but there is a big issue – right now, it looks like it could take up to 10 minutes to test each Logic 8! We haven’t started to optimize the process, which is currently very manual and inefficient, but in the short term, this means we won’t be able to ship all of the pre-orders at once. This is one of the main hold-ups for Logic 8.
To keep things from getting too confusing about calibration, we’re going to add a screen to the software indicating what calibration information is currently in use for your device, as well as create a support article about it. We won’t have this support added to our software for a little while, but we’ve already recorded the amplitude and phase response of every device we’ve shipped – we just need to finish up the Matlab implementation of the calibration calculator and finish the software support for it. There is a very small droop in gain at the higher frequencies, and this will interfere with amplitude measurements in the software.
Charles and Chris will be working on finishing this tomorrow, and I hope to include this with the Logic 8 software update.įor reasons similar to those above, the AA filter’s frequency response isn’t perfectly flat by design. If this doesn’t make it into the very next release, it shouldn’t be far away. We have already computed these values for all Logic 4s shipped, and this data will be recorded from the Logic 8s as well. This calibration is done on a per-device level. However the software doesn’t know that yet. We designed them to operate over a slightly larger range than 0 to 5 volts, so that any component variation wouldn’t infringe on that range. Right now, there is a small amount of error in the voltage measurements of the shipped Logic 4s. Our plan right now is to get the next version of the software to support DC calibration only – specifically, the frequency response of the products won’t be calibrated, but the DC voltages will be accurate. With Logic 8, we’re going to do the same thing, since it looks like it could take a few more days at the least to finish up the process, and we need to dedicate quite a bit of time to the Pro devices too. For Logic 4, we simply captured the data set we needed to compute the calibration constants before shipping – since the calibration system isn’t quite complete yet. We’re still working on perfecting our calibration filter generator, which isn’t quite ready yet. The first thing I want to talk about is calibration.
The hold-up now is getting our programming and calibration software updated to work with Logic 8, update the Matlab code for testing and calibrating Logic 8 (more on that later) and actually processing all of the pre-ordered units. The software is working well too, although it’s still pretty rough around the edges. The Logic 8 HDL is complete! I’ve just fixed the last issue that was holding us back from a functional product. However, it will start shipping soon, and we will be sending out the address collection emails shortly. Unfortunately Logic 8 isn’t shipping tonight.