SIGMA LBA-708 - Manual (Page 204)

Operator’s Manual LBA-PC 204
frame column or row. Download cursor column and row are intended to be useful only when the
cursor is set to follow the centroid, or peak location.
The following describes how to set the pan window to the lower right corner of the detector. In
this example the lower right corner of the detector is at (744, 512). The frame data size is 32 X
30. The capture resolution value is 2, so we must multiply the data size by 2 2 =4. Therefore the
actual size of the capture window is 128 X 120. To put the capture window in the lower right
corner we subtract the capture window size from the lower right limits, 744-128=616 and 512-
120=392.
Host sends
:PNW?(^END)
LBA-PC sends
PNW
UpperLeft=112,32;
LowerRight=744,512(^END)
Host sends
:PAN?(^END)
LBA-PC sends
PAN
CaptureLoc=224,64;
CaptureSize=32,30;
CaptureResolution=2(^END)
Host sends
PAN
X=616;
Y=392(^END)
10.7.3 Frame Coordinates
Frame coordinates are used for the frame data stored in the frame buffer. Frame coordinates are
dependent only on the frame size. Frame coordinates are always positive with the origin in the upper
left corner. Frame coordinates are specified with column and row values. Column values increase to
the right and are numbered from 1 to the frame width. Row values increase going down and are
numbered from 1 to the frame height.
Frame coordinates are used in the :RCC? and :RCR? commands to specify which column and row to
download.
Although :RCC? and :RCR? allow you to download data from the current cursor column and row, there
is no way to associate the cursor location in world coordinates (described below) with a particular data