The source code is located in /home/astro-util/src/glish/gfuncs/. The GUI can be launched by typing CONFIGGUI. A related glish script, gbtsetup.g, implements a command-line interface to the setup functionality.
Pros:
- Frank has successfully implemented configuration ability for many GBT observing modes, including VLBI
- We must consider much of what CONFIGGUI provides as valid telescope configurations to support general scientific needs
- It can be used NOW to save NRAO astronomers and friends of the telescope time during setup
Cons:
- We need to be able to select IF paths dynamically
- We need to be sensitive to device health, and only configure to IF paths that will work
- We need feedback from the system once it has been configured
- We need to make configuration a more "seamless" part of the observing context, rather than provide a totally separate tool
- We need to move away from glish towards a more global, better documented language (ie python) to support future technology directions
Capabilities and problems with CONFIGGUI
F. Ghigo, NRAO-Green Bank
August 5, 2003
Introduction
CONFIGGUI is a utility GUI written in glish which allows users to
set up their desired GBT configuration. This note lists the
capabilities of this tool, and also its deficiencies.
Capabilities
- Handles all receivers that have been used on the GBT so far:
Prime focus 1 and 2, L-band, S-band, C-band, X-band,
Ku-band, K-band, and Q-band.
- Handles all back ends:
BCPM, Spectral Processor, ACS, DCR, radar, and VLBI.
- Handles 1, 2, or 4 IFs, and multiple beam receivers.
- Velocity and reference frame can be specified.
- Switching modes and types can be specified.
- Has test mode and debugging mode.
- The configuration is organized in terms of the primary and secondary
keywords described in the memo by Ghigo and Maddalena (April 2003).
- The CONFIGGUI tool is separate from the code that does the configuration.
CONFIGGUI calls a separate glish function ("gbtsetup.g") to actually
configure the M&C system.
- Consults a "badfibers.dat" file to patch around signal paths if one or
more fiber drivers or receivers are out of service.
Deficiencies
- Does not consult the cabling file. No flexible searching of possible
signal paths.
- There has not been extensive testing of all possible setups.
- No save/restore of configuration; GUI does not remember how it was
set up in a previous session.
- No integration with GO: GO does not know what CONFIGGUI did, and
vice versa.
- "DCR_AF" option is not implemented.
- Does not know about the receivers whose IFs are split to go to
both converter racks A and B, hence doesn't know how to handle
- IFs.
- probably does not handle multi-beam and multi-IF cases correctly
needs more testing in this area.
#/====================================================================
#/== gbtsetup : command-line function to set up the whole system.
#/====================================================================
#/== Usage:
#/== gbtsetup( , , , , ,
#/== , , , , ,
#/== , )
#/==
#/== : Rcvr_342, Rcvr_450, Rcvr_600, Rcvr_800, Rcvr_1070
#/== Rcvr1_2, Rcvr2_3, Rcvr4_6, Rcvr8_10,
#/== Rcvr12_18, Rcvr18_22, Rcvr22_26, Rcvr40_52, Holography
#/==
#/== : cont, spec, pul, radar, vlbi
#/==
#/== : dcr, sp, acs, spect, vlbi, radar, bcpm
#/== dcr_af, dcr_if, bcpm/sp, bcpm/acs
#/==
#/== : frequency (in MHz) to be tracked by LO1.
#/== If more than one spectral window, this is an array of size Nwin.
#/==
#/== : the bandwidth in MHz per backend channel.
#/==
#/== : backend integration time in seconds.
#/==
#/== : a glish record specifying the switching:
#/== [ , , , [freq1, freq2] ]
#/== sw=[mode='tp', type='none', swper=1, df=[0.0, 0.0] ]
#/==
#/== : a glish record with additional receiver parameters:
#/== [ , , ]
#/== For Example: rcv=[cal='lo', pol='circ', beams='B12']
#/==
#/== : a list of frequency offsets.
#/== df=[ DF1, DF2, ...] ] ( frequencies in MHz)
#/==
#/== : a glish record specifying velocity tracking info:
#/== vel=[ v=[v1,v2], vdef=, frame= ]
#/== (veloc in km/sec)
#/==
#/== : this glish record depends on the backend.
#/== : For the Spectrometer, this is:
#/== [ , ]
#/== : is 3 or 9;
#/== : 'low', 'med', or 'hi'
#/== : example: [levels=3, nchan='low' ]
#/== : For the SpectProc: [ multmode= 'Square'|'SqrCross']
#/==
#/== : this is a list of the fiber paths to be avoided:
#/== For example: [2, 7]
#/== If bad_fibers='auto' the bad fiber list is found from a file.
#/===========================================================================
-- Main.NicoleRadziwill - 12 Sep 2003
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Revision r1.1 - 12 Sep 2003 - 18:02 GMT - NicoleRadziwill
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