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authorMartin Braun <martin.braun@ettus.com>2015-04-10 18:39:45 -0700
committerMartin Braun <martin.braun@ettus.com>2015-04-10 18:39:45 -0700
commitddae9468b9f69fcbc91c4f8cbffc0b7d69b79b4c (patch)
treed2b9422fa68315ff1b001c9fa60baeb6752ae59b /host/docs/usrp_b200.dox
parent1f41782b564da36e31f41e2561f2778e36986baf (diff)
parentf23e7bcc47f86ffb431aee43abe670e3e5e31647 (diff)
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Merge branch 'maint'
Diffstat (limited to 'host/docs/usrp_b200.dox')
-rw-r--r--host/docs/usrp_b200.dox36
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)
*/