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Diffstat (limited to 'host/docs/calibration.rst')
| -rw-r--r-- | host/docs/calibration.rst | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/host/docs/calibration.rst b/host/docs/calibration.rst index c97eebfd5..a24d7cbca 100644 --- a/host/docs/calibration.rst +++ b/host/docs/calibration.rst @@ -7,11 +7,11 @@ UHD - Calibration Application Notes ------------------------------------------------------------------------ Self-calibration ------------------------------------------------------------------------ -UHD comes with several self-calibration utilities for minimizing IQ imbalance and DC offset. +UHD software comes with several self-calibration utilities for minimizing IQ imbalance and DC offset. These utilities perform calibration sweeps using transmit leakage into the receive path (special equipment is not required). The results from a calibration are written to a CSV file in the user's home directory. -UHD will automatically apply corrections at runtime when the user re-tunes the daughterboard LO. +UHD software will automatically apply corrections at runtime when the user re-tunes the daughterboard LO. Calibration results are specific to an individual RF board. **Note:** @@ -19,7 +19,7 @@ When a calibration table is present, and the user wishes to override the calibration settings through the API: the user should re-apply the desired setting every time the LO is re-tuned. -UHD comes with the following calibration utilities: +UHD software comes with the following calibration utilities: * **uhd_cal_rx_iq_balance:** - mimimizes RX IQ imbalance vs. LO frequency * **uhd_cal_tx_dc_offset:** - mimimizes TX DC offset vs. LO frequency @@ -34,7 +34,7 @@ The following RF frontends are supported by the self-calibration utilities: ******************************************** Calibration Utilities ******************************************** -UHD installs the calibration utilities into **<install-path>/bin**. +UHD software installs the calibration utilities into **<install-path>/bin**. **Disconnect** any extrernal hardware from the RF antenna ports, and run the following from the command line. Each utility will take several minutes to complete. @@ -47,6 +47,14 @@ Each utility will take several minutes to complete. See the output given by --help for more advanced options, such as: manually choosing the frequency range and step size for the sweeps. +**Note:** +Your daughterboard needs a serial number to run a calibration utility. Some older daughterboards +may not have a serial number. If this is the case, run the following command to burn a serial number +into the daughterboard's EEPROM: +:: + + <install dir>/share/uhd/utils/usrp_burn_db_eeprom --ser=<desired serial> --args=<optional device args> + ******************************************** Calibration Data ******************************************** |