Honeywell HH1800 User Manual page 170

Alternately, specify the number of pixels to cut from the outside margin of the image; thus
only the center pixels are transmitted.
Example:
Image Crop set to 238M:
P - Protocol
Used for shipping an image. Protocol covers two features of the image data being sent to the
host. It addresses the protocol used to send the data (Hmodem, which is an Xmodem 1K
variant that has additional header information), and the format of the image data that is sent.
S - Pixel Ship
Pixel Ship sizes an image in proportion to its original size. It decimates the image by shipping
only certain, regularly spaced pixels.
Example: 4S would transmit every fourth pixel from every fourth line.
The smaller number of pixels shipped, the smaller the image, however, after a certain point
the image becomes unusable.
Example:
Pixel Ship set to 1S:
156
nM Margin: cut n columns from the left, n + 1 columns from the right, n rows from
the top, and n + 1 rows from the bottom of the image. Ship the remaining
center pixels. Range: 0 - 238.
(Default = 0, or full image)
0P None (raw data)
2P None (default for USB)
3P Hmodem compressed (default for RS232)
4P Hmodem
1S ship every pixel (default)
2S ship every 2nd pixel, both horizontally and vertically
3S ship every 3rd pixel, both horizontally and vertically
Pixel Ship set to 2S: Pixel Ship set to 3S: Pixel Ship set to 4S:
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