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HAM Radio 1
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1983-10-04
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57 lines
commands provided so as to arrive at a topology that matches
the schematic.
Defining the elements themselves is a simple enough task.
Interconnecting them to realize the network at hand requires a
small degree of thought. The easiest type of network is that
in which all that needs to be done is cascade the elements,
using either the CAS or CAX command. More elaborate networks
will entail the usage of PAR and SER, the latter in the case
of including emitter or source biasing components, as a typical
example.
Although no provision is provided for common-base to com-
mon-collector transformations, this can be accomplished using
IMA, CEB and IMA on the element in that order. This is handy
in designing emitter/source followers and oscillators.
When using any of the interconnections or transformations,
the elements to be manipulated must appear in the network list-
ing prior to the command. If not, an error will result when
attempting to exit and no analysis will be possible.
Lastly, one must always include an END satement. The
entry for the element number is the same as for the number
given to the completed network at the last interconnection.
The network cannot be analyzed without it. Failure to include
one will result in an error when exiting.
H. EXITING THE EDITOR
When selecting RETURN with a network in memory, a number
of actions take place. These are:
A. All elements are checked for uniqueness. The
element number is checked against all other element numbers
to ensure that the designation is unique.
B. All interconnections and transformations are
verified. The elements which are to be operated on are
checked that they do in fact exist in the network. A com-
mon error here is to issue a CAX (multiple cascade) and
not have all of the elements in the network.
C. All of the file elements are checked to see if
they are on the disk. If not, the program cannot retrieve
them to create a data fit.
D. All data files are retrieved and a data fit is
performed.
If any errors are encountered in this process, the editor
will jump to the display mode and will list the network, dis-
playing the line in which the error was found in reverse field.
It is then the users task to correct the error. It is not pos-
sible to exit the editor with a faulty network in memory. If
the user wishes to do so, the network must first be deleted.
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