Changes between Version 2 and Version 3 of Tutorials/k0SDR/Tutorial00

Timestamp:

Aug 23, 2012, 7:47:04 PM (12 years ago)

Author:

nilanjan

Comment:

—

Tutorials/k0SDR/Tutorial00

@@ -2 +2 @@
 
 == Description ==
-In this tutorial we'll use the 2 USRPs on Sandbox 3 to transmit and receive a single frequency over the air. The UHD (UniversalSoftwareRadioPeripheral Hardware Driver) is used to communicate with the USRPs. This driver is used standalone to configure and enable the USRP for communication.
+In this tutorial we'll use the 2 USRPs on Sandbox 3 to transmit and receive a single frequency over the air to demonstrate the use of ''Universal software Radio peripheral'' Hardware Drivers (UHD) which  is used standalone to configure and enable the USRPs.
 
 == Hardware / Software Resources utilized ==
  1. Sandbox 3 - consists of two nodes (node1-1 & node1-2). Each node has a USRP2 connect via Ethernet.
- 2. ''ubuntu-11-10-gnuradio.ndz'': disk image loaded onto nodes. This image has all the precompiled - software required to configure the USRPs and analyze recorded data.
+ 2. ''ubuntu-11-10-gnuradio.ndz'': disk image loaded onto nodes. This image has all the precompiled - software required to configure the USRPs and analyze recorded data. The USRP2's interface with the node is already configured.
  3. omf-5.2 / omf-5.3: used to image to nodes
  4. octave: GNU version of MATLAB
@@ -52 +52 @@
 }}}
 
- * The directory content like the following in both nodes
+ * The directory content should look like the following in both nodes
 {{{
 root@node1-1:~/uhd/host/build/examples# ls
@@ -60 +60 @@
 CTestTestfile.cmake  rx_multi_samples  test_messages       tx_timed_samples
 }}}
+
+ * Once inside the node verify that the node can talk to the USRP
+{{{
+root@node1-1:~/uhd/host/build/examples# uhd_find_devices
+}}}
+
+  * It should return something like the following:
+{{{
+root@node1-1:~/uhd/host/build/examples# uhd_find_devices
+linux; GNU C++ version 4.6.1; Boost_104601; UHD_003.004.003-0-unknown
+
+--------------------------------------------------
+-- UHD Device 0
+--------------------------------------------------
+Device Address:
+    type: usrp2
+    addr: 192.168.10.2
+    name:
+    serial: 1232
+}}}
+
+ * Probe the device
+{{{
+root@node1-1:~/uhd/host/build/examples# uhd_usrp_probe
+linux; GNU C++ version 4.6.1; Boost_104601; UHD_003.004.003-0-unknown
+
+-- Opening a USRP2/N-Series device...
+-- Current recv frame size: 1472 bytes
+-- Current send frame size: 1472 bytes
+  _____________________________________________________
+ /
+|       Device: USRP2 / N-Series Device
+|     _____________________________________________________
+|    /
+|   |       Mboard: USRP2-REV4
+|   |   hardware: 1024
+|   |   mac-addr: 00:50:c2:85:34:d0
+|   |   ip-addr: 192.168.10.2
+|   |   gpsdo: none
+|   |   serial: 1232
+|   |
+|   |   Time sources: none, external, _external_, mimo
+|   |   Clock sources: internal, external, mimo
+|   |   Sensors: mimo_locked, ref_locked
+|   |     _____________________________________________________
+|   |    /
+|   |   |       RX DSP: 0
+|   |   |   Freq range: -50.000 to 50.000 Mhz
+|   |     _____________________________________________________
+|   |    /
+|   |   |       RX DSP: 1
+|   |   |   Freq range: -50.000 to 50.000 Mhz
+|   |     _____________________________________________________
+|   |    /
+|   |   |       RX Dboard: A
+|   |   |   ID: XCVR2450 (0x0061)
+|   |   |     _____________________________________________________
+|   |   |    /
+|   |   |   |       RX Subdev: 0
+|   |   |   |   Name: XCVR2450 (0x0061)
+|   |   |   |   Antennas: J1, J2
+|   |   |   |   Sensors: lo_locked, rssi
+|   |   |   |   Freq range: 2400.000 to 6000.000 Mhz
+|   |   |   |   Gain range LNA: 0.0 to 30.5 step 15.0 dB
+|   |   |   |   Gain range VGA: 0.0 to 62.0 step 2.0 dB
+|   |   |   |   Connection Type: IQ
+|   |   |   |   Uses LO offset: No
+|   |   |     _____________________________________________________
+|   |   |    /
+|   |   |   |       RX Codec: A
+|   |   |   |   Name: ltc2284
+|   |   |   |   Gain Elements: None
+|   |     _____________________________________________________
+|   |    /
+|   |   |       TX DSP: 0
+|   |   |   Freq range: -250.000 to 250.000 Mhz
+|   |     _____________________________________________________
+|   |    /
+|   |   |       TX Dboard: A
+|   |   |   ID: XCVR2450 (0x0060)
+|   |   |     _____________________________________________________
+|   |   |    /
+|   |   |   |       TX Subdev: 0
+|   |   |   |   Name: XCVR2450 (0x0060)
+|   |   |   |   Antennas: J1, J2
+|   |   |   |   Sensors: lo_locked
+|   |   |   |   Freq range: 2400.000 to 6000.000 Mhz
+|   |   |   |   Gain range VGA: 0.0 to 30.0 step 0.5 dB
+|   |   |   |   Gain range BB: 0.0 to 5.0 step 1.5 dB
+|   |   |   |   Connection Type: QI
+|   |   |   |   Uses LO offset: No
+|   |   |     _____________________________________________________
+|   |   |    /
+|   |   |   |       TX Codec: A
+|   |   |   |   Name: ad9777
+|   |   |   |   Gain Elements: None
+}}}
+
+ If the commands ''uhd_find_devices'' & ''uhd_usrp_probe '' return No UHD Devices Found, please refer to the trouble shooting section.
+
+ * Set up node1-1 to transmit a single frequency sine wave with a frequency of 100k Hz sampled at a rate of 8 Msamples / second and modulated upto 5000MHz
+{{{
+./tx_waveforms --wave-freq 100e3 --wave-type SINE --freq 5000e6 --rate 8e6
+}}}
+
+== Troubleshooting ==
+ * ''uhd_find_devices'' & ''uhd_usrp_probe '' return No UHD Devices Found