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-rw-r--r--host/docs/usrp1.rst7
1 files changed, 2 insertions, 5 deletions
diff --git a/host/docs/usrp1.rst b/host/docs/usrp1.rst
index 984f89ae9..f77a26e0a 100644
--- a/host/docs/usrp1.rst
+++ b/host/docs/usrp1.rst
@@ -136,9 +136,6 @@ 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
-To configure UHD for the new reference clock, modify host/lib/usrp/usrp1/clock_ctrl.cpp:
-
-::
-
- static const double master_clock_rate = <YOUR_NEW_REFERENCE_FREQUENCY>;
+For the correct clock settings, call usrp->set_master_clock_rate(EXT_CLOCK_FREQUENCY)
+before any other parameters are set in your application.