There exist many receivers, which depending on the
selected skyfrequency
have a different configuration concerning switches, sideband or the
calculation
of the ULO-frequency. For these receivers now exist special OBSE
- symbols, which choose and set the right receiver configuration by the
given frequency. They can be used instead of the normal OBSE
- commands for frequencies and receiver specification like SET
FREQUENCY...
or LINE... . If one will set the frequencies
with
the normal parameters one has to be very careful to set all other
parameters
for the right receiver configuration.
Calling these symbols without parameter delivers a
description of the
necessary inputs. Certain receiver do not need such definitions. In
this
case one gets an error-message saying that the symbol is not defined.
Frequencies from a line-catalog one calls with the OBSE
- symbol:
- LINRX
<name> [
< fixed > [ < catalog> [ < option > ] ] ]
- <name> : is the line name in the catalog
- <fixed> : F, if the frequency shall be
fixed, otherwise
it is corrected
- <catalog> : name of the line catalog
with or without directory-path
in VAX(VMS)-format (e.g.: [dir.dir2]name.ext)
- <option> : more options, which depend on
the receiving
system
- <fixed>, <catalog> and <option> are
optional inputs
A frequency one can call with the OBSE -
symbol:
- FRQRX
<frequency>
[ < fixed > [ < option > ] ]
- <frequency> : is the observing frequency
in GHz
- <fixed> : F, if the frequency shall be
fixed, otherwise
it is corrected
- <option> : more options, which depend on
the receiving
system
- <fixed> and <option> are optional inputs
Both symbols always set both
possible frequencies
(for line and continuum) to the same value.
