diff options
Diffstat (limited to 'host/docs')
| -rw-r--r-- | host/docs/sync.rst | 19 | ||||
| -rw-r--r-- | host/docs/usrp2.rst | 5 |
2 files changed, 6 insertions, 18 deletions
diff --git a/host/docs/sync.rst b/host/docs/sync.rst index 9284d8e33..3cb13fbf3 100644 --- a/host/docs/sync.rst +++ b/host/docs/sync.rst @@ -102,22 +102,11 @@ and the user can also parse this string to determine GPS time: usrp->set_time_next_pps(uhd::time_spec_t(gps_time+1)); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Method 3 - query the gps_time sensor +Method 3 - internal GPSDO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -This is a variant of method 2 for USRPs with internal GPSDOs. -The user can query the gps_time sensor to wait for the NMEA string. - -:: - - //wait for NMEA string from internal GPSDO - usrp->get_mboard_sensor("gps_time"); - usrp->set_time_next_pps(uhd::time_spec_t(0.0)); - - -- OR -- - - //wait for the NMEA string and set GPS time - const time_t gps_time = usrp->get_mboard_sensor("gps_time").to_int(); - usrp->set_time_next_pps(uhd::time_spec_t(gps_time+1)); +USRPs with internal GPSDOs properly configured will automatically +configure themselves to set the VITA time to current UTC time. See the +GPSDO application note for more details. ------------------------------------------------------------------------ Synchronizing channel phase diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index 88b217f1b..fa811d0f6 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -349,9 +349,8 @@ Test the PPS input with the following app: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Internal GPSDO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -USRP-N2XX models can have an optional internal GPSDO. -To use the GPSDO with UHD, you must burn an EEPROM setting -so that UHD knows that the internal GPSDO was installed. +Please see the GPSDO application note for information on configuring and +using the internal GPSDO. **Installation instructions:** |