From 48cbf038e2e95d4137fc0c533969ac1d4720bfee Mon Sep 17 00:00:00 2001 From: Same-Writer Date: Thu, 1 Aug 2019 10:28:25 -0500 Subject: docs: x300: update docs for multiple timed commands Adding advisory in the X300 manual page regarding issuing multiple timed commands causing device lockups. --- host/docs/usrp_x3x0.dox | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'host/docs') diff --git a/host/docs/usrp_x3x0.dox b/host/docs/usrp_x3x0.dox index 58f3a2dd3..602b6e013 100644 --- a/host/docs/usrp_x3x0.dox +++ b/host/docs/usrp_x3x0.dox @@ -805,5 +805,10 @@ they can be queried through the API. - **ref_locked** - clock reference locked (internal/external) - Other sensors are added when the GPSDO is enabled +\subsection x3x0_misc_timed_cmds_lockup Multiple Timed Command Advisory + +When issuing multiple timed commands to an x3xx device, it is important to ensure that the device is streaming data in some capacity. In the HG and XG images, the DDC & DUC derive their sense of time from the header of passing packets. This sense of time is necessary to execute timed commands. Repeatedly issuing timed commands without streaming will result in the command queue of the DDC / DUC backing up and overflowing, putting the device in a state where a full restart is required. + + */ // vim:ft=doxygen: -- cgit v1.2.3