4-35Specifies the length in bytes of a window descriptor block. Each block has the same length. The allowablerange of length is between 40 and 248 bytes. For a length outside this range, this scanner returns thefollowing error:Status: B'00001' (CHECK CONDITION)Sense key: X'5' (ILLEGAL REQUEST)(b) Window descriptor blockWindow parameter data (window descriptor block) is shown in the following illustration.7 6 5 4 3 2 1 0Window identifier(Reserved)(MSB)(LSB)(MSB)(LSB)(MSB)Upper Left X(LSB)(MSB)Upper Left Y(LSB)(MSB)Width(LSB)(MSB)Length(LSB)BrightnessThresholdContrastImage compositionBit per pixel(MSB)(LSB)RIF (Reserved) Padding type(MSB)(LSB)Compression typeCompression argument(Reserved)Vendor unique parameterByte 01234569ADE111215161718X resolutionHalftone patternBit ordering191A1B1C1D1E1F2021222728nY resolution