JAI AT-200CL User Manual

JAI AT-200CL User Manual Manual pdf 16 page image

AT-200CL- 15 -7. Functions and Operations7.1. Basic constructionA 32-bit micro processor controls all functions in the AT-200CL camera. The CCD sensoroutput is normalized in CDS and preamplifiers. The signals are then digitized to 14 bits.Digital gain control, color matrix, look-up tables and setup can do signal processing in 14 bitsbefore the signal is converted to a 12-, 10- or 8-bit Camera Link signal.Fig. 12. Principle diagram for signal processing7.2. Main functions7.2.1 Partial scan (SC)The partial scanning function uses the middle of the image vertically to achieve faster framerates. This is very useful when capturing and inspecting an image which does not require thefull height. The AT-200CL has 4 types of pre-set partial scan modes: 2/3, 1/2, 1/4 and 1/8.Fig.13 Partial scan (pre-set)In addition to pre-set partial scan modes, the AT-200CL has a variable partial scan mode. Thestart line can be set from the 1st line to 1236th line and the end line can also be set from the1st line to the 1236th line. In actual use, the start line should always be set smaller than theend line and the end line should be larger than the start line. For instance, if the end line isset at 1236, the start line should be 1235 or smaller. If the start line is set at 1, the end lineshould be set at 2 or larger.750 nm700650600550500450400750 nm700650600550500450400750 nm700650600550500450400LightCCDCCDCCDR chA/D & process circuitBlemish compensationShading compensationColor matrixLUT/Gamma/KneeCamera Link InterfaceG chA/D & process circuitBlemish compensationShading compensationColor matrixLUT/Gamma/KneeB chA/D & process circuitBlemish compensationShading compensationColor matrixLUT/Gamma/KneeMode Start line End line Frame RateFast DumpFast DumpNormal Scan2/31/21/41/8206308463541103092877369528.42 fps35.27 fps55.89 fps79.23 fps