diff --git a/docs/source/getting_help.rst b/docs/source/getting_help.rst index 83418c4e..d6b145d8 100644 --- a/docs/source/getting_help.rst +++ b/docs/source/getting_help.rst @@ -2,7 +2,7 @@ Getting Help ============ -Before asking for help with HackRF, check to see if your question is answered in this documentation, listed in the :ref:`FAQ `, or addressed in the `HackRF GitHub repository issues `__. +Before asking for help with HackRF, check to see if your question is answered in this documentation, listed in the :ref:`Troubleshooting ` page, or addressed in the `HackRF GitHub repository issues `__. For assistance with HackRF general use or development, please look at the `issues on the GitHub project `__. This is the preferred place to ask questions so that others may locate the answer to your question in the future. diff --git a/docs/source/index.rst b/docs/source/index.rst index da261612..25379195 100644 --- a/docs/source/index.rst +++ b/docs/source/index.rst @@ -7,7 +7,7 @@ Welcome to HackRF's documentation! :caption: User Documentation getting_help - faq + troubleshooting synchronization_checklist hackrf_projects_mentions diff --git a/docs/source/faq.rst b/docs/source/troubleshooting.rst similarity index 89% rename from docs/source/faq.rst rename to docs/source/troubleshooting.rst index a96f329e..ef7dff86 100644 --- a/docs/source/faq.rst +++ b/docs/source/troubleshooting.rst @@ -1,13 +1,13 @@ -.. _faq: +.. _troubleshooting: ================================================ -FAQ +Troubleshooting ================================================ .. _bigspike: -What is the big spike in the center of my received spectrum? -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +There is a big spike in the center of the received spectrum +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ If you see a large spike in the center of your FFT display regardless of the frequenecy you are tuned to, you are seeing a DC offset (or component or bias). The term "DC" comes from "Direct Current" in electronics. It is the unchanging aspect of a signal as opposed to the "alternating" part of the signal (AC) that changes over time. Take, for example, the signal represented by the digital sequence: @@ -23,16 +23,10 @@ There was a bug in the HackRF firmware (through release 2013.06.1) that made the A high DC offset is also one of a few symptoms that can be caused by a software version mismatch. A common problem is that people run an old version of gr-osmosdr with newer firmware. +Solution +-------- - ----- - - - -How do I deal with the big spike in the middle of my spectrum? -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Start by reading :ref:`our FAQ Response on the DC Spike `. After that, there are a few options: +There are a few options: #. Ignore it. For many applications it isn't a problem. You'll learn to ignore it.