On 04/30/2018 02:54 PM, Daniel Guarecuco via USRP-users wrote:
Hi,
I have an USRP1 with a BasicTX and a BasicRX.
I have been trying to receive data with no luck, it seems there is a
problem with the antenna port.
I run uhd_usrp_probe.exe and this is what I get:
C:\Program Files\UHD\bin>uhd_usrp_probe
[INFO] [UHD] Win32; Microsoft Visual C++ version 14.0; Boost_105900;
UHD_3.11.0.
0-release
[INFO] [NIRIO] rpc_client stopping...
[INFO] [NIRIO] rpc_client stopped.
[ERROR] [UHD] Device discovery error: input stream error
[INFO] [USRP1] Opening a USRP1 device...
[INFO] [USRP1] Using FPGA clock rate of 64.000000MHz...
_____________________________________________________
/
| Device: USRP1 Device
| _____________________________________________________
| /
| | Mboard: USRP1
| | serial: 480f888c
| | name: USRP_ettus
| |
| | Time sources: none
| | Clock sources: internal
| | Sensors:
| | _____________________________________________________
| | /
| | | RX DSP: 0
| | |
| | | Freq range: -32.000 to 32.000 MHz
| | _____________________________________________________
| | /
| | | RX DSP: 1
| | |
| | | Freq range: -32.000 to 32.000 MHz
| | _____________________________________________________
| | /
| | | RX Dboard: A
| | | ID: Basic RX (0x0001)
| | | _____________________________________________________
| | | /
| | | | RX Frontend: AB
| | | | Name: BasicRX (AB)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 500000000.0 to 500000000.0 step 0.0 Hz
| | | | Connection Type: IQ
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | RX Frontend: BA
| | | | Name: BasicRX (BA)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 500000000.0 to 500000000.0 step 0.0 Hz
| | | | Connection Type: QI
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | RX Frontend: A
| | | | Name: BasicRX (A)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 250000000.0 to 250000000.0 step 0.0 Hz
| | | | Connection Type: I
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | RX Frontend: B
| | | | Name: BasicRX (B)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 250000000.0 to 250000000.0 step 0.0 Hz
| | | | Connection Type: Q
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | RX Codec: A
| | | | Name: ad9522
| | | | Gain range pga: 0.0 to 20.0 step 1.0 dB
| | _____________________________________________________
| | /
| | | RX Dboard: B
| | | _____________________________________________________
| | | /
| | | | RX Frontend: 0
| | | | Name: Unknown (0xffff) - 0
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: 0.000 to 0.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 0.0 to 0.0 step 0.0 Hz
| | | | Connection Type: IQ
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | RX Codec: B
| | | | Name: ad9522
| | | | Gain range pga: 0.0 to 20.0 step 1.0 dB
| | _____________________________________________________
| | /
| | | TX DSP: 0
| | |
| | | Freq range: -44.000 to 44.000 MHz
| | _____________________________________________________
| | /
| | | TX DSP: 1
| | |
| | | Freq range: -44.000 to 44.000 MHz
| | _____________________________________________________
| | /
| | | TX Dboard: A
| | | ID: Basic TX (0x0000)
| | | _____________________________________________________
| | | /
| | | | TX Frontend: AB
| | | | Name: BasicTX (AB)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 500000000.0 to 500000000.0 step 0.0 Hz
| | | | Connection Type: IQ
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | TX Frontend: BA
| | | | Name: BasicTX (BA)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 500000000.0 to 500000000.0 step 0.0 Hz
| | | | Connection Type: QI
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | TX Frontend: A
| | | | Name: BasicTX (A)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 250000000.0 to 250000000.0 step 0.0 Hz
| | | | Connection Type: I
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | TX Frontend: B
| | | | Name: BasicTX (B)
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: -250.000 to 250.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 250000000.0 to 250000000.0 step 0.0 Hz
| | | | Connection Type: Q
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | TX Codec: A
| | | | Name: ad9522
| | | | Gain range pga: -20.0 to 0.0 step 0.1 dB
| | _____________________________________________________
| | /
| | | TX Dboard: B
| | | _____________________________________________________
| | | /
| | | | TX Frontend: 0
| | | | Name: Unknown (0xffff) - 0
| | | | Antennas:
| | | | Sensors:
| | | | Freq range: 0.000 to 0.000 MHz
| | | | Gain Elements: None
| | | | Bandwidth range: 0.0 to 0.0 step 0.0 Hz
| | | | Connection Type: IQ
| | | | Uses LO offset: No
| | | _____________________________________________________
| | | /
| | | | TX Codec: B
| | | | Name: ad9522
| | | | Gain range pga: -20.0 to 0.0 step 0.1 dB
There is no antenna listed. Is this a firmware or hardware problem?
There isn't a problem. The BASIC_RX doesn't have switchable antennas.
There are two distinct parameters involved. One describes the signal
chain via the subdevice specification, and the other describes any
switchable antenna
ports available on that connection. In the case of BASIC_*, there
are no switchable antenna connections--in fact that is true for some
other boards
as well.
https://files.ettus.com/manual/page_dboards.html#dboards_basicrx
Instead, on the BASIC_RX, you'd use the subdevice spec to tell the
hardware what you're interested in.
For the "A" side of your USRP1:
A:A A:B A:AB A:BA
Are all plausible
For the "B" side:
B:A B:B B:AB B:BA
Are all plausible for your subdev spec.
What I don't recall is whether there are enough DDC resources in the
USRP1 to support all 4 input as separate real-mode streams. I think you
need
to specific the usrp1_fpga_4rx.rbf FPGA image when you instantiate
the device (via the fpga= argument), and that image precludes the use
of TX at all (because there aren't enough resources in the FPGA to
support TX when you have 4 DDC channels).
The USRP1 is now obsolete, and no new work is being done on it.
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
