ALLIED Vision Technologies Guppy F-503 - Manual (Page 136)

Description of the data path
GUPPY Technical Manual V7.1.0
136
The number of defect pixels is written in advanced register DPDataSize
(0xF100029C bit [4..17]). Due to 16-bit format: to get the number of
defect pixels read out this value and divide through 4. For more infor-
mation see
Table 120: Advanced register: Defect pixel correction on
page 268.
Reset values (resolution, shutter, gain, brightness)
7. Take the camera, remove lens cap and thread the lens onto the camera.
8. Reset values for image resolution, shutter, gain and brightness (offset)
to their previous values.
9. Grab a single image (one-shot).
Activate/deactivate defect pixel correction
Activate:
1. Set ON_OFF flag to 1.
The defect pixel correction is activated in FPGA.
Deactivate:
1. Set ON_OFF flag to 0.
The defect pixel correction is deactivated in FPGA.
Store defect pixel data non-volatile
1. Set the MemSave flag to 1.
All previous calculated defect pixel coordinates are transferred from the
dual port RAM to the EEPROM on the sensor board.
 Defect pixel data is stored twice in the camera:
– Stored volatile: in dual port RAM
– Stored non-volatile: in EEPROM
Load non-volatile stored defect pixel data
1. Set the MemLoad flag to 1.
All non-volatile stored defect pixel coordinates within the EEPROM are
loaded into the dual port RAM.
Note

• Switch off camera and switch on again:
 defect pixel data in dual port RAM will get lost
• Start-up camera / initialize camera:
 non-volatile stored defect pixel data are loaded
automatically from EEPROM to dual port RAM.