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| -rw-r--r-- | host/docs/usrp_b1xx.rst | 12 |
1 files changed, 6 insertions, 6 deletions
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, |