diff options
author | Josh Blum <josh@joshknows.com> | 2012-07-17 16:32:59 -0700 |
---|---|---|
committer | Josh Blum <josh@joshknows.com> | 2012-07-17 16:32:59 -0700 |
commit | c5207ff2834c2ff9012d59b94e29d90573e9277f (patch) | |
tree | 77bb6266d0f34b9ab58719731e3c94b735036fdd /host/docs/usrp_e1xx.rst | |
parent | dd4c2242a014d5429d8cfde74d9a61bf75faa249 (diff) | |
download | uhd-c5207ff2834c2ff9012d59b94e29d90573e9277f.tar.gz uhd-c5207ff2834c2ff9012d59b94e29d90573e9277f.tar.bz2 uhd-c5207ff2834c2ff9012d59b94e29d90573e9277f.zip |
docs: added comparative features list at top of each
Diffstat (limited to 'host/docs/usrp_e1xx.rst')
-rw-r--r-- | host/docs/usrp_e1xx.rst | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/host/docs/usrp_e1xx.rst b/host/docs/usrp_e1xx.rst deleted file mode 100644 index 31a47347f..000000000 --- a/host/docs/usrp_e1xx.rst +++ /dev/null @@ -1,135 +0,0 @@ -======================================================================== -UHD - USRP-E1XX Series Application Notes -======================================================================== - -.. contents:: Table of Contents - ------------------------------------------------------------------------- -Specify a Non-standard Image ------------------------------------------------------------------------- -UHD will automatically select the USRP-Embedded FPGA image from the -installed images package. The FPGA image selection can be overridden with the -**--fpga=** device address parameter. - -Example device address string representations to specify non-standard FPGA -image: - -:: - - fpga=usrp_e100_custom.bin - ------------------------------------------------------------------------- -Changing the Master Clock Rate ------------------------------------------------------------------------- -The master clock rate of the USRP-Embedded feeds both the FPGA DSP and the codec -chip. Hundreds of rates between 32MHz and 64MHz are available. A few notable -rates are: - -* **64MHz:** maximum rate of the codec chip -* **61.44MHz:** good for UMTS/WCDMA applications -* **52Mhz:** good for GSM applications - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Set 61.44MHz - uses external VCXO -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -To use the 61.44MHz clock rate with the USRP-Embedded, two jumpers must be moved -on the device. - -* **J16** is a two pin header; remove the jumper (or leave it on pin1 only). -* **J15** is a three pin header; move the jumper to (pin1, pin2). - -**Note:** See instructions below to communicate the desired clock rate UHD. - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Set other rates - uses internal VCO -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -To use other clock rates, the jumpers will need to be in the default position. - -* **J16** is a two pin header; move the jumper to (pin1, pin2). -* **J15** is a three pin header; move the jumper to (pin2, pin3). - -To communicate the desired clock rate into UHD, -specify the a special device address argument, -where the key is **master_clock_rate** and the value is a rate in Hz. -Example: -:: - - uhd_usrp_probe --args="master_clock_rate=52e6" - ------------------------------------------------------------------------- -Clock Synchronization ------------------------------------------------------------------------- - - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Ref Clock - 10MHz -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The E1xx has a 10MHz TCXO which can be used to discipline the flexible clocking -by selecting **REF_INT** for the **clock_config_t**. - -Alternately, an external 10MHz reference clock can be supplied by soldering -a connector. - -* Connector **J10** (REF_IN) needs MCX connector **WM5541-ND** or similar. -* Square wave will offer the best phase noise performance, but sinusoid is acceptable. -* **Power level:** 0 to 15dBm -* Select **REF_SMA** in **clock_config_t**. - - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -PPS - Pulse Per Second -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -An exteral PPS signal for timestamp synchronization can be supplied by soldering -a connector. - -* Connector **J13** (PPS) needs MCX connector **WM5541-ND** or similar. -* Requires a square wave signal. -* **Amplitude:** 3.3 to 5Vpp - -Test the PPS input with the following app: - -* **<args** are device address arguments (optional if only one USRP is on your machine). - -:: - - cd <install-path>/share/uhd/examples - ./test_pps_input --args=<args> - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Internal GPSDO -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Please see the `Internal GPSDO Application Notes <./gpsdo.html>`_ -for information on configuring and using the internal GPSDO. - -UHD will always try to detect an installed GPSDO at runtime. -There is not a special EEPROM value to burn for GPSDO detection. - ------------------------------------------------------------------------- -Hardware Setup Notes ------------------------------------------------------------------------- - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Front panel LEDs -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The LEDs on the front panel can be useful in debugging hardware and software -issues. The LEDs reveal the following about the state of the device: - -* **LED A:** transmitting -* **LED B:** fpga loaded -* **LED C:** receiving -* **LED D:** fpga loaded -* **LED E:** reference lock -* **LED F:** board power - ------------------------------------------------------------------------- -Miscellaneous ------------------------------------------------------------------------- - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Available Sensors -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The following sensors are available; -they can be queried through the API. - -* **ref_locked:** clock reference locked (internal/external) -* other sensors are added when the GPSDO is enabled |