Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
2415 Eisenhower Avenue
Alexandria, VA 22314
P: 703-292-4937
C: 703-470-9820
glang...@nsf.gov
> On Mar 2, 2018, at 5:49 PM, Marcus D. Leech
<mle...@ripnet.com> wrote:
>
> I've been working on a few maint items on
spectro_radiometer the last little while and committed
them this morning.
>
> Here's the help blurb:
>
> Options:
> -h, --help show this help message and
exit
> --abw=ABW Set Analog bandwidth
[default=4M]
> --antenna=ANTENNA Set Antenna [default=RX2]
> --baseline=BASELINE Set Baseline length
[default=99.3]
> --bbgain=BBGAIN Set Baseband Gain [default=5]
> --bw=BW Set Bandwidth [default=-1M]
> --dcg=DCG Set Detector DC Gain
[default=100]
> --decln=DECLN Set Observing Declination
[default=0]
> --device=DEVICE Set SDR Device Name
[default=rtl=0
> file=/dev/zero,rate=5e6]
> --fftsize=FFTSIZE Set FFT size [default=2048]
> --frequency=FREQUENCY
> Set Center Frequency
[default=1.42041G]
> --gain=GAIN Set RF Gain [default=30]
> --ifgain=IFGAIN Set IF Gain [default=5]
> --longitude=LONGITUDE
> Set Local Longitude
[default=-76.03]
> --mode=MODE Set Operation Mode
[default=total]
> --prefix=PREFIX Set Data File Prefix
[default=h1]
> --rfilist=RFILIST Set RFI Frequency List
[default=]
> --srate=SRATE Set Sample rate
[default=2.56M]
> --zerotime=ZEROTIME Set SIdereal time for auto
baseline set [default=99.3]
>
>
> The main things to note are that antenna-selection
can now be made on the command line, and the IF and BB
gains can be set explicitly via the command line,
> while the RF gain is also reflected in the GUI.
>
> The FFT sizes are now command-line selectable.
>
> The analog bandwidth is settable from the command
line as well. For some SDRs or SDR hardware
configurations, this does nothing. For some, it sets
> the bandwidth of the analog anti-alias filters in
front of the ADC. The effects vary considerably from SDR
to SDR, so some experimentation is
> nearly always required.
>
>
>
>
>
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