For calculation of a model spectrum the command
MODEL/SPECTRUM has to be used. The result can
be either a spectrum of photon fluxes or a spectrum
of count rates. In the last case calibration files of
the chosen instruments are needed for input. Of course,
the energy range of the spectrum is then given by these
instruments. In the first case this energy range
has to be defined in the parameter file.
It is restricted to 1000 data points.
The parameter file
can be created with the command CREATE/PARFIL FIT.
Since MODEL/SPECTRUM internally uses an unit system of
cm, s, and keV for length, time, and energy, respectively,
with a Boltzmann constant 
,
all output numbers are measured in this unit system.
The calculated spectrum is stored in a table with
a spectral header describing the used model.