Search found 106 matches

by bglod
Thu May 24, 2018 10:46 am
Forum: Hardware and RF
Topic: External clock input of 10MHz
Replies: 3
Views: 148

Re: External clock input of 10MHz

Great! Let us know if you have any issues with it.
by bglod
Wed May 23, 2018 11:35 am
Forum: Hardware and RF
Topic: External clock input of 10MHz
Replies: 3
Views: 148

Re: External clock input of 10MHz

One way to do this is to use J71 and enable the VCTCXO tamer algorithm as shown in this blog post.
by bglod
Tue Apr 24, 2018 8:49 am
Forum: Troubleshooting
Topic: Booting issue
Replies: 9
Views: 1545

Re: Booting issue

Earlier you mentioned this board was an x115, was that in error? If you look at the FPGA itself, there is a product code that begins with EP4CE followed by 2 or 3 digits. If it says "EP4CE40" then it's an x40; if it says "EP4CE115" it is an x115. What do they read?
by bglod
Tue Apr 10, 2018 3:44 pm
Forum: Digital Signal Processing
Topic: Help on matlab and IQ samples FFT processing
Replies: 5
Views: 2468

Re: Help on matlab and IQ samples FFT processing

1. The %ADC scale from -1 to 1 matches with the 0.2 to 3.3V is from the LMS6 data sheet Vpp? Or is the ADC reference scale a different parameter? Those voltages are for the synthesizer, not the ADC. Table 8 has the ADC specs. :) If we look at the "input amplitude" row, the "max" column says 1.8 Vpp...
by bglod
Thu Apr 05, 2018 11:52 am
Forum: Digital Signal Processing
Topic: Help on matlab and IQ samples FFT processing
Replies: 5
Views: 2468

Re: Help on matlab and IQ samples FFT processing

Hello, I have been working on something similar and was hoping you could help me out as well @bglod. I would like to convert my RX units to dBuV then to V/m since many exposure projects are expressed this way. The I/Q samples are uncalibrated ADC LSB counts from the ADCs in the LMS6, so they are es...
by bglod
Wed Mar 21, 2018 1:30 pm
Forum: Troubleshooting
Topic: BladeRFx40 get freezing after some days
Replies: 1
Views: 798

Re: BladeRFx40 get freezing after some days

Well that's not good! Do you receive specific error messages at all? Does it seem like the device is getting disconnected from the host, or does it actually hang? The USB controller could be an issue here. We have a list of known problematic controllers . There's a list of known good ones above it a...
by bglod
Wed Mar 21, 2018 12:03 pm
Forum: Digital Signal Processing
Topic: Help on matlab and IQ samples FFT processing
Replies: 5
Views: 2468

Re: Help on matlab and IQ samples FFT processing

If you have a bunch of leading zero samples, that sounds strange to me if you are using the official libbladeRF, bladeRF-cli, FX3 firmware, and FPGA. Are the raw sample values actually zero, or do they just look like zero on the chart? Some things of note: Normalize your samples (divide all samples ...
by bglod
Wed Mar 21, 2018 11:38 am
Forum: General
Topic: Need ATSC Transmitter and Receiver using Bladerf
Replies: 1
Views: 928

Re: Need ATSC Transmitter and Receiver using Bladerf

I believe this was solved via a lengthy e-mail thread. johnchris, this may be a good opportunity to summarize your findings in the Projects section of this forum and link to it from this thread. Maybe it will help someone with the same question in the future.
by bglod
Wed Mar 14, 2018 1:20 pm
Forum: Troubleshooting
Topic: Issues - Installation in MacOS
Replies: 1
Views: 791

Re: Issues - Installation in MacOS

Where are you stuck? Is there an error message?
by bglod
Wed Mar 14, 2018 1:17 pm
Forum: Troubleshooting
Topic: bladeRFx40 with yateBTS not working
Replies: 2
Views: 916

Re: bladeRFx40 with yateBTS not working

First, thank you for providing such detailed information! I'm far from an expert on YateBTS, so I don't know how helpful this will be. I noticed you are receiving a lot of "TX underrun" errors, TX timestamp issues, RX timestamp jumps, and excessive TOA errors. The TX underruns and jumpy timestamps c...