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It seems there is an USB problem with the Lime and Windows (10?). Here are the results of my last testing :
When I connect the lime directly on my USB3 port and starting the PC after a complete shutdown with on/off, all is ok. I have to shutdown the PC (on/off) to retry properly the test. It seems that the lime does not support to be ejected when the PC is on, even with application software is properly closed of course.
When I connect the lime with an USB3 Hub (I tried with different hubs), everything is wrong, the lime is very often not recognised, sometimes as an USB2 device, even with the above procedure, not only with express software but also with SDR console. I get an error in the windows system journal (problem of authorisation in com object) and the PC does not want to properly shutdown, i have to action the on/off button. Same things with another PC.
Have you tested the lime with an hub connection ? hot ejecting ? reconnect ?
PS : do you know the leds signification of the lime mini (red, flashing green/red, flashing green) ?
Just tried a quick test with a USB3 hub; I normally connect direct. LimeSDR Mini is correctly detected in SDR Console and DATV Express software with or without the hub. One thing I hadn't noticed before is that it doesn't show up as an inserted USB device; there's no eject icon.
If I just pull the Lime out of the PC or hub and put it back it reconnects OK.
Must admit I'm not sure about the LED colours except that it shows green when connected; I've seen red, green and yellow.
I connect the lime directly to the USB port before turning on the PC and all is ok. Your software is working very well and I have made a lot of experiences with it. However a big problem is the important latency specially with low SR, do you think it is possible to reduce it ?
Thanks again for your great work !
New RevB of MiniTiouner-Express with arrow pointing to the new J3 jumper set-up that was added. The push-on shorting plug is shown positioned (away from end of the board) to configure power regulators as the original design (that is: from J1 ext power supply)
It important to note that the new RevB units will ship with J3 configured to work like the original design; that is: to use external power supply connected to J1. If the J3-jumper-shunt is moved to be closest to the end of the board with RF connectors, then the power for the unit is obtained from a USB-3 port.
The huge spike in orders of MiniTiouner-Express units of course is due to the launch of the Es'hail-2 ham DATV satellite into orbit on November 15th.
Charles G4GUO has been spending much of his time designing a 250W RF Power Amplifier for 2.4 GHz for his Es'hail-2 satellite up-link transmitter.
The project team PCB layout guru, Tom WB6P, has been helping G4GUO by converting the AutoCAD files into industry-standard gerber-files
Ken W6HHC is continuing to update the Express_DVB_Transmiter User Guide to emphasize that v1.25LP11 software has transitioned to cover four transmitter boards:
* DATV-Express board
* LimeSDR-USB (larger) board
* LimeSDR-mini board
* PLUTO-ADLM board
New photos are being prepared using MiniTiouner-Express-B and using LimeSDR-mini (etc.) with the v1.25LP11 software for the User Manual updates.
Art WA8RMC has been helping Ken W6HHC to upgrade the MiniTiouner-Express User Guide to include the new power supply options available with the addition of J3 in RevB.
Project Speed is set to slow….de Ken W6HHC
73...de Ken W6HHC
The Windows set-up.exe file and the NOTES file are now available at www.DATV-Express.com on the DOWNLOADS page.
Many thanks to G4GUO for his efforts.
73…de Ken W6HHC
The LimeSDR seems to transmit a decent carrier and mod looking at my RSP spectrum analyser but it won't lock in MT. If I plug the Lime into my RPi Portsdown its as good as gold so I'm assuming the Lime is 100% fine.
Both my Plutos, which I have been successfully using with the earlier version of Express DVB as a variable signal source to test small amplifiers with DATV, has also stopped transmitting anything visible. Carrier only will appear, but its not a very nice (clean) looking signal.
I realise its not very helpful to say 'its stopped working' but everything ticks and configures as I have read in the guide and as expected it to, just no DATV output signal. I've re-installed the Pluto drivers and Express, and re-booted the laptop.
About the only difference I noticed is that with the earlier version, TX stream bar would run at about 20%, not there is nothing showing in that bar whatever I transmit, symbol rate wise. Have I 'broken' it?
Suggestions very welcome, it was so very handy.