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author | Marcus Müller <marcus.mueller@ettus.com> | 2015-04-09 19:22:19 +0200 |
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committer | Martin Braun <martin.braun@ettus.com> | 2015-04-09 10:47:21 -0700 |
commit | a0d3628a1d954afaa00ebae1bf61ca3bf4fe86d6 (patch) | |
tree | 156fe7ef54dd89f45b579e57189920e2197a6434 /host/docs/usrp_b200.dox | |
parent | 9b50f5ef896de0620beda6fbfb81e2871f17078c (diff) | |
download | uhd-a0d3628a1d954afaa00ebae1bf61ca3bf4fe86d6.tar.gz uhd-a0d3628a1d954afaa00ebae1bf61ca3bf4fe86d6.tar.bz2 uhd-a0d3628a1d954afaa00ebae1bf61ca3bf4fe86d6.zip |
Fixed B2x0 doc, man pages
* usrp_b200.dox: added information on GPIO header
* usrp_b200.dox: added missing footnote on things only on B210
* usrp_b200.dox: added paragraph on bw adjustment
* uhd_usrp_probe.1/uhd_find_devices.1: added type=e3x0 listing
Diffstat (limited to 'host/docs/usrp_b200.dox')
-rw-r--r-- | host/docs/usrp_b200.dox | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/host/docs/usrp_b200.dox b/host/docs/usrp_b200.dox index 6ee2f3445..bd79c4470 100644 --- a/host/docs/usrp_b200.dox +++ b/host/docs/usrp_b200.dox @@ -9,10 +9,12 @@ - External PPS reference input - External 10 MHz reference input - Configurable clock rate + - Variable analog bandwidth (200 kHz - 56 MHz) - Internal GPSDO option (see \subpage page_gpsdo_b2x0 for details) - B210 Only: - MICTOR Debug Connector - JTAG Connector + - Revision 6 with GPIO header - FPGA Capabilities: - Timed commands in FPGA - Timed sampling in FPGA @@ -65,6 +67,24 @@ frontends have 73 dB of available gain; and the transmit frontends have it is recommended that users consider using at least half of the available gain to get reasonable dynamic range. +\subsection b200_fe_bw Frontend bandwidth + +The analog frontend has a seamlessly adjustable bandwidth of 200 kHz to 56 MHz. + +Generally, when requesting any possible master clock rate, UHD will +automatically configure the analog filters to avoid any aliasing (RX) or +out-of-band emissions whilst letting through the cleanest possible signal. + +If you, however, happen to have a very strong interferer within half the master +clock rate of your RX LO frequency, you might want to reduce this analog +bandwidth. You can do so by calling +uhd::usrp::multi_usrp::set_rx_bandwidth(bw). + +The property to control the analog RX bandwidth is `bandwidth/value`. + +UHD will not allow you to set bandwidths larger than your current master clock +rate. + \section Hardware Reference \subsection LED Indicators @@ -156,11 +176,17 @@ Below is a table showing the external connections and respective power informati Below is a table showing the on-board connectors and switches: -Component ID | Description | Details ---------------|----------------------------|---------------------------------------------------------- - J502* | Mictor Connector | Interface to FPGA for I/O and inspection. - J503* | JTAG Header | Interface to FPGA for programming and debugging. - S700 | FX3 Hard Reset Switch | - +Component ID | Description | Details +------------------------|----------------------------|--------------------------------------------------- + J502<sup>1</sup> | Mictor Connector | Interface to FPGA for I/O and inspection. + J503<sup>1</sup> | JTAG Header | Interface to FPGA for programming and debugging. + J504<sup>2</sup> | GPIO Header | Header running to the FPGA for GPIO purposes. + S700 | FX3 Hard Reset Switch | Resets the USB controller / System reset + U100 | GPSDO socket | Interface to GPS disciplined reference oscillator + +<sup>1</sup> Only on the B210 + +<sup>2</sup> Only since rev. 6 (green board) */ |