Instruction manual

Marlin Technical ManualV.2.7.0
154
Controlling image capture
Sequence mode
Generally all Marlin cameras enable certain image settings to be modified on the
fly, e.g. gain and shutter can be changed by the host computer by writing into
the gain and shutter register even while the camera is running. An uncertainty
of one or two images remains because normally the host does not know (espe-
cially with external trigger) when the next image will arrive.
Sequence mode is a different concept where the camera holds a set of different
image parameters for a sequence of images. The parameter set is stored volatile
in the camera for each image to be recorded. This sequence of parameter sets is
simply called a sequence. The advantage is that the camera can easily synchro-
nize this parameter set with the images so that no uncertainty can occur. All CCD
model Marlin cameras support 32 different sequence parameters.
Examples For a sequence of images, each image can be recorded with a different shutter or
gain to obtain different brightness effects.
The image area (AOI) of a sequence of images can automatically be modified,
thus creating a panning or sequential split screen effect.
The following registers can be modified to affect the individual steps of the
sequence.
Mode this registers can be modified...
All modes Cur_V_Mode, Cur_V_Format, ISO_Channel, ISO_Speed, Brightness,
White_Balance (color cameras only), Shutter, Gain, look-up table, Tes-
tImage
Fixed modes only Cur_V_Frm_Rate
Format_7 only Image_Position, Image_Size, Color_Coding_ID, Byte_Per_Packet
Table 75: Registers to be modified within a sequence
Note

Sequence mode requires not only FW 3.03 but also special care
if changing image size, Color_Coding_ID and frame rate
related parameters. This is because these changes not only
affect settings in the camera but also require corresponding
settings in the receiving software in the PC.
Caution

Incorrect handling may lead to image corruption or loss of
subsequent images.
Please ask for detailed support if you want to use this fea-
ture.