SXT uses sequence tables to define the order that the images will be taken. There are thirteen `slots' which are available to set the parameters. For each slot a separate filter, resolution and observing region can be specified. The observing region selection is from a table of nine entries. Each entry specifies a location and the size of the output image in pixels (this means that the field of view is different depending on the pixel resolution used).
The sequence is started from the beginning whenever the ``SXT CNT AUTO'' command sequence is issued from the ground or by programmed control, or if the telemetry rate or mode changes. Therefore, the sequence does not automatically begin at the top at the beginning of a new orbit, for example.
LOOP 1 (n1=infinity)
Img 1-1 --------------------+
LOOP 2 (n2= ) |
Img 2-1 ------------+ |
Img 2-2 | |
LOOP 3 (n3= ) | |
Img 3-1 ----+ | |
Img 3-2 | | |
Img 3-3 | | |
Img 3-4 ----+ ---+ |
LOOP 4 (n4= ) |
Img 4-1 ------------+ |
Img 4-2 | |
LOOP 5 (n5= ) | |
Img 5-1 ----+ | |
Img 5-2 | | |
Img 5-3 | | |
Img 5-4 ----+ ---+ ---+