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Diffstat (limited to 'host/docs/usrp1.rst')
| -rw-r--r-- | host/docs/usrp1.rst | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/host/docs/usrp1.rst b/host/docs/usrp1.rst index f77a26e0a..97a8c3bb5 100644 --- a/host/docs/usrp1.rst +++ b/host/docs/usrp1.rst @@ -136,6 +136,11 @@ The USRP can be modified to accept an external clock reference instead of the 64 The new external clock needs to be a square wave between +7dBm and +15dBm -For the correct clock settings, call usrp->set_master_clock_rate(EXT_CLOCK_FREQUENCY) -before any other parameters are set in your application. +After the hardware modification, +the user should burn the setting into the EEPROM, +so UHD can initialize with the correct clock rate. +Run the following commands to record the setting into the EEPROM: +:: + cd <install-path>/share/uhd/utils + ./usrp_burn_mb_eeprom --args=<optional device args> --key=mcr --val=<rate> |