Purpose: To cause program execution at points in the data stream where
execution is not automatic. Options on the card also allow for
automatic generation of radiation patterns in either of two vertical
1- 2 XQ
3- 5 I1
(I1) Options controlled by (I1) are:
0 - no patterns requested (normal case).
1 - generates a pattern cut in the XZ plane, i.e., phi = 0 degrees
and theta varies from 0 degrees to 90 degrees in 1 degree steps.
2 - generates a pattern cut in the YZ plane, i.e., phi = 90 degrees
theta varies from 0 degrees to 90 degrees in 1 degree steps.
3 - generates both of the cuts described for the values
1 and 2.
The remainder of the card is blank.
- For the case of a single frequency step, four cards will automatically
produce program execution (i.e., the program stops reading data and
proceeds with the calculations requested to that point); the four
cards are the execute card (XQ), the near-field cards (NE,NH), and
the radiation-pattern card (RP). Thus, the only time the XQ card is
mandatory, for the case of one frequency, is when only currents and
impedances for the structure are desired. On the other hand, for the
case of automatic frequency stepping, only the XQ card and the RP
card cause execution. Thus, if only near-fields or currents are
desired, the XQ card is mandatory to cause execution. Furthermore,
the XQ card can always be used as a divider in the data after a card
which produces an execute. For instance, if the user wished to put
a blank XQ card after an RP card to more easily divide the data into
execution groups, the XQ card will act as a do-nothing card.
- The radiation-pattern generation option of the XQ card must not be
used when a radial wire ground screen or a second medium has been
specified. For these cases, the RP card is used where the presence
of the additional ground parameters is indicated.
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