Specifications

18 ST-133/ST-133A Controller Manual Version 2.H
TEMP LOCK LED: This lights to indicate that the temperature control loop has
locked and that the temperature of the CCD array will be stable to within
± 0.05°C. The actual lower temperature limit that can be achieved will
depend on a number of factors, including the laboratory temperature, and
on whether the optional fan accessory has been installed.
Note: There is provision in the hardware for reading out the array
temperature at the computer. This temperature feedback display is very
convenient for monitoring the temperature control status as it progresses
towards temperature lock. To determine when lock occurs, however, use
the Temperature Lock indication (LED or locked message displayed in
the WinView/32 Setup/Detector Temperature dialog box). Note that it
may take another 20 minutes after lock is reported before maximum
stability is achieved.
VIDEO BNC connector: The composite video output is provided at this
connector. The amplitude is 1 V pk-pk and the source impedance is
75 Ω. Either RS-170 (EIA) or CCIR standard video can be provided and
must be specified when the system is ordered. The video should be
connected to the monitor via 75 Ω coaxial cable and it must be
terminated into 75 Ω. Many monitors have a switch to select either
terminated or unterminated operation.
Note: If more than one device is connected to the video output, the last
device is the one that should to be terminated in 75 Ω. For example, to
connect the video output to a VCR as well as to a monitor, the cable
from the controller video output should be connected to the video input
connector of the VCR, and another 75 Ω cable should extend from the
video output connector of the VCR to the 75Ω input of the monitor. Do
not use a BNC TEE to connect the controller video output to multiple
devices.
One of the limitations of scientific non-video rate cameras has been their
difficulty in focusing and locating fields of view. The ST-133 or
ST-133A solves this problem by its combination of high-speed operation
with the implementation of true video output. This makes focusing and
field location as simple as with a video camera. This video output also
makes possible archiving an experiment on a VCR, producing hardcopy
data on a video printer, or even implementing autofocusing stages.
The video output must be selected by the Application software. In the
case of WinView/32, this is done by selecting Video from the
Acquisition menu. There is also provision in WinView/32 for intensity-
scaling the video output, that is, selecting the specific gray levels to be
displayed on the 8 bit video output.
In addition to intensity-scaling, you also need to be concerned about how
the array pixels map to the video display. The 756×486 resolution of a
typical video monitor corresponds well with the array size of an
RTE/CCD-768-K (768×512) or RTE/CCD-512EFT (512×512).