PCO.IMAGING pco.1200 hs, Руководство пользователя

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Chapter 3
‚
Camera Functions
page 24
User Manual pco.camera status 12/2004
exp
BNC output
Ro = 27 W
exposure signal
(internal)
Ro = 27 W
+5V
+5V
busy signal
(internal)
busy
BNC output
Figure 3.19 Output signal processing diagram [status out].
3.4 Diagnostics Interface
On the back panel of the power supply, there is a serial
data connector socket (see Figure 3.17), which is inte-
grated for diagnostics. It is labeled [RS232]. The PCO
service department can get information here regarding
the status and settings of the camera system. The cus-
tomer should ignore this interface.
3.5 Live View
The camera’s [Live-View] feature provides the opportunity
to watch and follow the recording process in real time.
Of the various memory operating modes (presented in
chapter 3.3.2), the live view feature is only available in the
record mode. In the FIFO mode, live view is not available,
as the data transmission line is occupied with the fastest
possible transmission of the image data to the computer.
There is no time available for transmission of the live view
images.
In record mode, images are recorded and they are written
into the active memory segment, depending on the mem-
ory operation mode’s [sequential] or [ring buffer]. The [live
view] function allows the user to follow the recording
process on a monitor. For that purpose, a copy of the
most recent image is sent via the integrated interface to
the computer for display (at maximum 200 MB/s).
When live view is applied, the speed of the image re-
cording is not compromised, because recording has pri-
ority.
3.6 CCD Pixel Clocks
The CCD camera system can be operated at three differ-
ent pixel clocks, which are specified in the camera spe-
cific data sheet in the appendix. Depending upon the ap-
plication requirements, the image recording can be cap-
tured more slowly with low noise or at higher speed at th
expense of a higher noise figure.
The readout rate or the pixel clock must be adjusted prior
to the exposure, either with the included
camware appli-
cation software or by using the appropriate SDK com-
mands.
3.7 CCD Cooling
The CCD image sensor in the camera system is thermo
electrically cooled (Peltier cooler). Depending on the im-
age size, the cooler achieves a temperature difference