Instruction manual

Table Of Contents
Description of the data path
PIKE Technical Manual V3.1.0
131
Frame memory and deferred image transport
An image is normally captured and transported in consecutive steps. The
image is taken, read out from the sensor, digitized and sent over the 1394
bus.
Deferred image transport
As all PIKE cameras are equipped with built-in image memory, this order of
events can be paused or delayed by using the deferred image transport fea-
ture.
PIKE cameras are equipped with 64 MB of RAM. The table below shows how
many frames can be stored by each model. The memory operates according
to the FIFO (first in, first out) principle. This makes addressing for individual
images unnecessary.
Note
L
The averaged image is output at a lower frame rate
being exactly the fraction: frame rate/number of
images.
The camera must be in idle before turning this feature
on.
The potential SNR enhancement may be lower when
using more than 8-bit original bit depth.
Select 16-bit image format in order to take advantage
of the full potential SNR and DNR (DyNamic Range)
enhancements.
Model Memory size
PIKE F-032B/C
PIKE F-032B/C fiber
105 frames
PIKE F-100B/C
PIKE F-100B/C fiber
32 frames
PIKE F-145B/C
PIKE F-145B/C fiber
22 frames
PIKE F-210B/C
PIKE F-210B/C fiber
15 frames
PIKE F-421B/C
PIKE F-421B/C fiber
6 frames
Table 51: FIFO memory size