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CD40047_R04_allPIXA_User-Manual.docx
190
Vertical image resolution
Name
Name
Vertical image resolution
Function
Sets the desired transport (vertical) resolution for the encoder mode.
Channels
All
Unit
Float
Step:
0.01
DPI (dots per inch)
Dependency
Only available if
Encoder
is selected at
Synchronization mode
Notes
This parameter is needed for the calculation of internal parameters for the
encoder mode.
Camera
Value CST
Lower limit
All
0
Default
All
4,000(*0,01dpi)
Upper limit
All
65535
NOTE
The value
Encoder pulses per line
is calculated internally by the camera and
may not exceed 255. Recommended values are between 0.5 and 255. Take
notice that values less than 0.5 cause a decrease in transport resolution
accuracy.
This value is calculated automatically with one of the following formulas with the values
that were specified using CST:
𝐸𝑛𝑐𝑜𝑑𝑒𝑟𝑃𝑢𝑙𝑠𝑒𝑠𝑃𝑒𝑟𝐿𝑖𝑛𝑒 =
𝐸𝑛𝑐𝑜𝑑𝑒𝑟𝐶ℎ𝑎𝑛𝑛𝑒𝑙 (
𝐸𝑑𝑔𝑒𝑠
𝑆𝑡𝑒𝑝
) ∗ 25,4 (
𝑚𝑚
𝑖𝑛𝑐ℎ
) ∗ 1000
𝐸𝑛𝑐𝑜𝑑𝑒𝑟𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛 (
µ𝑚
𝑆𝑡𝑒𝑝
) ∗ 𝑉𝑒𝑟𝑡𝑖𝑐𝑎𝑙𝐼𝑚𝑎𝑔𝑒𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛(
𝐷𝑜𝑡𝑠
𝑖𝑛𝑐ℎ
)
By using dots per inch (dpi) for this calculation, you must use the following formula:
𝐸𝑛𝑐𝑜𝑑𝑒𝑟𝑃𝑢𝑙𝑠𝑒𝑠𝑃𝑒𝑟𝐿𝑖𝑛𝑒 = 𝐹𝑢𝑙𝑙𝐼𝑛𝑐𝑟𝑒𝑚𝑒𝑛𝑡𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛(𝑑𝑝𝑖) ∗
𝐸𝑑𝑔𝑒𝑠/𝑠𝑡𝑒𝑝
𝑇𝑟𝑎𝑛𝑠𝑝𝑜𝑟𝑡𝑅𝑒𝑠𝑢𝑙𝑢𝑡𝑖𝑜𝑛(𝑑𝑝𝑖)
The value for encoder pulses per line can also be calculated with the following formula:
𝐸𝑛𝑐𝑜𝑑𝑒𝑟𝑃𝑢𝑙𝑠𝑒𝑠𝑃𝑒𝑟𝐿𝑖𝑛𝑒 = 𝑇𝑟𝑎𝑛𝑠𝑝𝑜𝑟𝑡𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛 (
𝜇𝑚
𝑝𝑖𝑥𝑒𝑙
) ∗
𝐸𝑑𝑔𝑒𝑠/𝑠𝑡𝑒𝑝
𝐹𝑢𝑙𝑙𝐼𝑛𝑐𝑟𝑒𝑚𝑒𝑛𝑡𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛(
𝜇𝑚
𝑖𝑛𝑐𝑟
)
Afterwards CST shows the result.
NOTE
Vertical image resolution
and
Integration time
have to be suitable to the
speed of the transport. The time for one line (Speed divided by resolution) should
be longer than the shortest possible integration time. In case of higher speed,
the camera switches to free-running line mode.