aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--host/docs/gpsdo_b2x0.dox7
-rw-r--r--host/docs/usrp_b200.dox3
2 files changed, 9 insertions, 1 deletions
diff --git a/host/docs/gpsdo_b2x0.dox b/host/docs/gpsdo_b2x0.dox
index a54665427..97d97135a 100644
--- a/host/docs/gpsdo_b2x0.dox
+++ b/host/docs/gpsdo_b2x0.dox
@@ -69,5 +69,12 @@ using the **gps_gprmc**, and **gps_gpgga** sensors. Location
information can be parsed out of the **gps_gpgga** sensor by using **gpsd**
or another NMEA parser.
+\section gpsdob_power Using a power supply with the B2x0 and GPSDO
+
+The GPSDOs for the B2x0 draw extra power, and when running off of bus power
+only, brownouts are possible (although not guaranteed to happen).
+It is recommended to use a wall power connector when using a B2x0 in
+conjunction with a GPSDO.
+
*/
// vim:ft=doxygen:
diff --git a/host/docs/usrp_b200.dox b/host/docs/usrp_b200.dox
index c846e916f..2192ba63e 100644
--- a/host/docs/usrp_b200.dox
+++ b/host/docs/usrp_b200.dox
@@ -19,8 +19,9 @@
- Timed sampling in FPGA
\section b200_power Power
+
In most cases, USB 3.0 bus power will be sufficient to power the device.
-If using USB 2.0 or an internal GPSDO, an external power supply or a cable designed
+If using USB 2.0 or a GPSDO, an external power supply or a cable designed
to pull power from 2 USB ports (USB 3.0 dual A to micro-B or B) must be used.
\section b200_imgs Specifying a Non-standard Image