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|  MIL-D-81347C(AS)
(2) Second Transmission- This data word shall contain the X
and Y components of the semiminor axis (bx and by). The bit allocations for the x and y data for the
semiminor axis shall be the same as described in 3.5.3.4.3.3.2(1). Negative numbers shall be ex-
pressed in one's complement code.
Accuracy and Distortion - X and Y Full Scale Deflection
3.5.3.4.3.3.3
Accuracy and Distortion Under Nominal Conditions - Nominal
3.5.3.4.3.3.3.1
conditions are defined as the temperature range of 10oC to 400C, and the range of input power within
the bounds of Limits 2 and 3 of Figure 3, MIL-STD-704 as modified by 3.3.12.1. Accuracies under
these conditions shall be as follows:
(1) The X and Y total harmonic distortion of the sinusoidal conic
generation signals shall be less than 1'%.
(2) The phase difference between the X and Y sinusoidal conic
generation signals shall be less than one degree.
(3) A change in the digital signal shall produce a corresponding
change in the analog signal within one LSB.
(4) The magnitude accuracy of X relative to Y shall be less
than +1%.
(5) The absolute accuracy of X or Y shall be less than +2%.
Accuracy and Distortion Under Extreme Conditions - Extreme
3.5.3.4.3.3.3.2
conditions shall be as defined in 3.3.10. Accuracies under these conditions shall be as follows:
(1) The X or Y total harmonic distortion of the sinusoidal conic
generation signals shall be less than 2%.
(2) The phase difference between the X and Y sinusoidal conic
generation signals shall be less than 2 degrees.
(3) A change in the digital signal shall produce a corresponding
change in the analog signs 1 within one LSB.
(4) The magnitude accuracy of X relative to Y shall be less than
+2%.
(5) The absolute accuracy of X or Y shall be less than +4%.
Test Mode - The MCP shall exercise the FG by synthesizing
3.5.3.4.3.3.4
various computer command words. (Refer to 3.5.3.4.5. )
Scaling - The X and Y components of an ellipse are represented
3.5.3.4.3.3.5
in 10-bit, one's complement, binary notation. The value of the LSB is 1/512 of the display diameter,
approximately 1/32 inch on the MPD. The maximum magnitude of each component shall be one display
diameter. This allows, for example, gene ration of the maximum circle, whose radius is equal to one
display diameter.
3.5.3.4.3.4
Interface Requirements
3.5.3.4.3.4.1
General - The Function Generator Logic shall receive signals
from the MTL, and the MPD Logic and transmit signals to both the MPD and MPD Logic, and the MTL.
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