blob: 77b20ed01c78dd00649fe0a7b784d9ea342e5d25 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*! \page page_usrp_b200 USRP-B2x0 Series Device Manual
\tableofcontents
\section b200_features Comparative features list - B200
- Hardware Capabilities:
- Integrated RF frontend (70 MHz - 6 GHz)
- External PPS reference input
- External 10 MHz reference input
- Configurable clock rate
- Internal GPSDO option
- B210 Only:
- MICTOR Debug Connector
- JTAG Connector
- FPGA Capabilities:
- Timed commands in FPGA
- Timed sampling in FPGA
\section b200_imgs Specify a Non-standard Image
UHD software will automatically select the USRP B2X0 images from the
installed images package. The image selection can be overridden with the
`fpga` and `fw` device address parameters.
Example device address string representations to specify non-standard
images:
fpga=usrp_b200_fpga.bin
-- OR --
fw=usrp_b200_fw.hex
\section b200_mcr Changing the Master Clock Rate
The master clock rate feeds the RF frontends and the DSP chains. Users
may select non-default clock rates to acheive integer decimations or
interpolations in the DSP chains. The default master clock rate defaults
to 32 MHz, but can be set to any rate between 5 MHz and 61.44 MHz.
The user can set the master clock rate through the usrp API call
uhd::usrp::multi_usrp::set_master_clock_rate(), or the clock rate can be set through the
device arguments, which many applications take: :
uhd_usrp_probe --args="master_clock_rate=52e6"
\section b200_fe RF Frontend Notes
The B200 features an integrated RF frontend.
\subsection b200_fe_tuning Frontend tuning
The RF frontend has individually tunable receive and transmit chains. On
the B200, there is one transmit and one receive RF frontend. On the
B210, both transmit and receive can be used in a MIMO configuration. For
the MIMO case, both receive frontends share the RX LO, and both transmit
frontends share the TX LO. Each LO is tunable between 50 MHz and 6 GHz.
\subsection b200_fe_gain Frontend gain
All frontends have individual analog gain controls. The receive
frontends have 73 dB of available gain; and the transmit frontends have
89.5 dB of available gain. Gain settings are application specific, but
it is recommended that users consider using at least half of the
available gain to get reasonable dynamic range.
*/
// vim:ft=doxygen:
|
