On 2021-09-10 9:01 p.m., msfu wrote:
the output of uhd_usrp_probe --args type=b200 is
msfu@dragonos:~$ uhd_usrp_probe --args type=b200 [INFO] [UHD] linux;
GNU C++ version 9.2.1 20200304; Boost_107100; UHD_3.15.0.0-2build5
[INFO] [B200] Detected Device: B210 [INFO] [B200] Loading FPGA image:
/usr/share/uhd/images/usrp_b210_fpga.bin... [INFO] [B200] Operating
over USB 3. [INFO] [B200] Detecting internal GPSDO.... [INFO] [GPS] No
GPSDO found [INFO] [B200] Initialize CODEC control... [INFO] [B200]
Initialize Radio control... [INFO] [B200] Performing register loopback
test... [INFO] [B200] Register loopback test passed [INFO] [B200]
Performing register loopback test... [INFO] [B200] Register loopback
test passed [INFO] [B200] Setting master clock rate selection to
'automatic'. [INFO] [B200] Asking for clock rate 16.000000 MHz...
^[[B^[[B^[[B[INFO] [B200] Actually got clock rate 16.000000 MHz.
^[[B^[[B^[[B _____________________________________________________ / |
Device: B-Series Device |
_____________________________________________________ | / | | Mboard:
B210 | | serial: 8000545 | | name: Zhixun-wireless | | product: 2 | |
revision: 4 | | FW Version: 8.0 | | FPGA Version: 16.0 | | | | Time
sources: none, internal, external, gpsdo | | Clock sources: internal,
external, gpsdo | | Sensors: ref_locked | |
_____________________________________________________ | | / | | | RX
DSP: 0 | | | | | | Freq range: -8.000 to 8.000 MHz | |
_____________________________________________________ | | / | | | RX
DSP: 1 | | | | | | Freq range: -8.000 to 8.000 MHz | |
_____________________________________________________ | | / | | | RX
Dboard: A | | | _____________________________________________________
| | | / | | | | RX Frontend: A | | | | Name: FE-RX2 | | | | Antennas:
TX/RX, RX2 | | | | Sensors: temp, rssi, lo_locked | | | | Freq range:
50.000 to 6000.000 MHz | | | | Gain range PGA: 0.0 to 76.0 step 1.0 dB
| | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz | | | |
Connection Type: IQ | | | | Uses LO offset: No | | |
_____________________________________________________ | | | / | | | |
RX Frontend: B | | | | Name: FE-RX1 | | | | Antennas: TX/RX, RX2 | | |
| Sensors: temp, rssi, lo_locked | | | | Freq range: 50.000 to
6000.000 MHz | | | | Gain range PGA: 0.0 to 76.0 step 1.0 dB | | | |
Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz | | | | Connection
Type: IQ | | | | Uses LO offset: No | | |
_____________________________________________________ | | | / | | | |
RX Codec: A | | | | Name: B210 RX dual ADC | | | | Gain Elements: None
| | _____________________________________________________ | | / | | |
TX DSP: 0 | | | | | | Freq range: -8.000 to 8.000 MHz | |
_____________________________________________________ | | / | | | TX
DSP: 1 | | | | | | Freq range: -8.000 to 8.000 MHz | |
_____________________________________________________ | | / | | | TX
Dboard: A | | | _____________________________________________________
| | | / | | | | TX Frontend: A | | | | Name: FE-TX2 | | | | Antennas:
TX/RX | | | | Sensors: temp, lo_locked | | | | Freq range: 50.000 to
6000.000 MHz | | | | Gain range PGA: 0.0 to 89.8 step 0.2 dB | | | |
Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz | | | | Connection
Type: IQ | | | | Uses LO offset: No | | |
_____________________________________________________ | | | / | | | |
TX Frontend: B | | | | Name: FE-TX1 | | | | Antennas: TX/RX | | | |
Sensors: temp, lo_locked | | | | Freq range: 50.000 to 6000.000 MHz |
| | | Gain range PGA: 0.0 to 89.8 step 0.2 dB | | | | Bandwidth range:
200000.0 to 56000000.0 step 0.0 Hz | | | | Connection Type: IQ | | | |
Uses LO offset: No | | |
_____________________________________________________ | | | / | | | |
TX Codec: A | | | | Name: B210 TX dual DAC | | | | Gain Elements: None
and no, there is no internal gpsdo. ;)
i am not a software developer,... i am an rf enthusiast which is
playing with dragon os, a distro for sdr.
the application i want to start is Crocodilehunter. all is running
fine, but the gps can't get no fix so the application is breaking.
i think it has to do with the communication between usrp and pll-gpsdo.
Well, connect your GPSDO 10MHz and 1PPS outputs to the appropriate
inputs of the USRP B210, and then perhaps ask the devs of
CrocoDileHunter to add provision
for clock setup for external clocks.
The native clock on the B210 is actually fairly decent--2.5PPM. But
that may not be good enough for some cellular implementations.
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