diff options
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 9d3550b98..1da7f2aee 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 @@ -90,6 +92,24 @@ 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 @@ -181,11 +201,17 @@ 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) */ |