From 74244730097fa39267a2b1a0615a8c3ca0734614 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Mon, 21 May 2012 12:12:16 -0700 Subject: b100: fix for 61.44 MHz clock mod docs --- host/docs/usrp_b1xx.rst | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'host/docs') diff --git a/host/docs/usrp_b1xx.rst b/host/docs/usrp_b1xx.rst index 564fb89be..538d60fce 100644 --- a/host/docs/usrp_b1xx.rst +++ b/host/docs/usrp_b1xx.rst @@ -34,20 +34,20 @@ A few notable rates are: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Set 61.44MHz - uses external VCXO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -To use the 61.44MHz clock rate, the USRP embedded will require two jumpers to be moved. +To use the 61.44MHz clock rate, the USRP embedded will require one jumper to be moved, +and X4 must be populated with a 61.44 MHz oscillator. -* J16 is a two pin header, remove the jumper (or leave it on pin1 only) -* J15 is a three pin header, move the jumper to (pin1, pin2) +* **J15** is a three pin header, move the jumper to (pin1, pin2) +* **357LB3I061M4400** is the recommended oscillator for X4 **Note:** See instructions below to communicate the desired clock rate into the UHD. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Set other rates - uses internal VCO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -To use other clock rates, the jumpers will need to be in the default position. +To use other clock rates, the jumper will need to be in the default position. -* J16 is a two pin header, move the jumper to (pin1, pin2) -* J15 is a three pin header, move the jumper to (pin2, pin3) +* **J15** is a three pin header, move the jumper to (pin2, pin3) To communicate the desired clock rate into the UHD, specify the a special device address argument, -- cgit v1.2.3