From aa4a6b6686967d39bd2f295c7170dc196abd68e6 Mon Sep 17 00:00:00 2001 From: Jason Abele Date: Fri, 27 Aug 2010 15:22:55 -0700 Subject: Created pps_test example and docs --- host/docs/usrp2.rst | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'host/docs/usrp2.rst') diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index 3ac326f58..0d48209be 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -205,3 +205,18 @@ Example, set the args string to the following: :: addr=192.168.10.2, recv_buff_size=100e6 + +------------------------------------------------------------------------ +Hardware setup notes +------------------------------------------------------------------------ + +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Ref Clock - 10MHz +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Using an external 10MHz reference clock requires a signal level between +5dBm and +20dBm at 10MHz applied to the Ref Clock SMA port on the front panel. + + +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +PPS - Pulse Per Second +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Using a PPS signal for timestamp synchronization requires a 5Vpp square wave signal -- cgit v1.2.3 From ddfcc114bfd6d37c182a3279368852f4b96f9ffd Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Thu, 9 Sep 2010 12:35:37 -0700 Subject: usrp2: added some pps docs using the test example app --- host/docs/usrp2.rst | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'host/docs/usrp2.rst') diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index 0d48209be..745361b77 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -213,10 +213,19 @@ Hardware setup notes ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Ref Clock - 10MHz ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Using an external 10MHz reference clock requires a signal level between +5dBm and +20dBm at 10MHz applied to the Ref Clock SMA port on the front panel. +Using an external 10MHz reference clock requires a signal level between ++5dBm and +20dBm at 10MHz applied to the Ref Clock SMA port on the front panel. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ PPS - Pulse Per Second ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Using a PPS signal for timestamp synchronization requires a 5Vpp square wave signal + +Test the PPS input of the USRP2 with the following app: +:: + + cd /share/uhd/examples + ./test_pps_input --args= + +* are device address arguments (optional if only one USRP is on your machine) -- cgit v1.2.3