Parkes Spectrometer, Full Stokes Version
Peter McMahon created a very capable pulsar data acquision based on the U.C. Berkeley blocks. His design was amoung the first to use the 10 GigaBit
ethernet communications blocks.
There are several versions of the design that have different configuration requirements. In addition, the IBOBs are connected
to different host computers with different configuration parameters.
During the summer of 2008, Marc Eimer, Duncan Lorimer and Glen Langston assembled a parspec design that obtained data from the NRAO 43m Telescope and record data in the pulsar spectrometer mode. Paul Demorest, Scott Ransom, John Ford, Randy McCullogh
and Jason Ray made many valuable contributions to the system setup and advice on data acquisition and networking.
The PARSPEC design uses a U.C. Berkeley IBob board for input.
Marc Eimer and Glen Langston set up the Parspec design with input from the Fake Pulsar. These tests went well, but there
were some questions concerning the test pulsar outputs. Mark has written a test report.
After the end of summer 2008, the computer configuration was radically changed, and we lost the ability to use the GUI with the
parspec design. On 2008 December 16, Vlad Kondratiev, Paul Demorest and Glen Langston revised the software for communications
between the IBOB and the computer tofu.gb.nrao.edu.
We had to make a number of changes to a number of scripts. These changes are tabulated below:
- TOFU replaces BEEF as data acquisition computer. Edited scripts to reference new executable location.
- Executable is /data/scratch/glangsto/parspec/gui
- Data acquisition directory: /data/scratch/glangsto/parspec
Monitor Plot of Stokes I, Q, U and V
IBOB commands in telnet session
Folded data taken with Parspec Stokes using the Artificial (Fake) pulsar