F - File Format; H - Histogram Stretch - Honeywell 4800dr - Document Camera Imaging Manual

F - File Format

Indicates the desired format for the image.
0F KIM format
1F TIFF binary
2F TIFF binary group 4, compressed
3F TIFF grayscale
4F Uncompressed binary (upper left to lower right, 1 pixel/bit, 0 padded end of line)
5F Uncompressed grayscale (upper left to lower right, bitmap format)
6F JPEG image (default)
8F BMP format (lower right to upper left, uncompressed)

H - Histogram Stretch

Increases the contrast of the transmitted image. Not available with some image formats.
0H No stretch (default)
1H Histogram stretch
Example of Histogram Stretch at 0H:
1 - 8
Example of Histogram Stretch at 1H: