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64 ST-133 Controller Manual Version 3.B
Outputs
Note: See Appendix B, PTG Module, for information about the PTG connectors.
VIDEO: 1 V pk-pk from 75 Ω, BNC connector. Either RS-170 (EIA) or CCIR standard
video as specified when system was ordered. Requires connection via 75 Ω cable that
must be terminated into 75 Ω.
: TTL output (BNC) for monitoring camera status. Logic output is software-
selectable as either NOTSCAN or SHUTTER. When the logic output is NOTSCAN,
it is at a TTL low when CCD is being read; otherwise high. When the logic output is
SHUTTER, the output precisely brackets shutter-open time (exclusive of shutter
compensation) and can be used to control an external shutter or to inhibit a pulser or
timing generator. Default selection is SHUTTER.
: TTL output (BNC); marks start of first exposure. When run is initiated,
remains high until completion of cleaning cycles preceding first exposure, then goes
low and remains low for duration of run.
Input/Outputs
SERIAL COM: (TAXI) Data link to computer via proprietary cable connected to this
9-pin "D" connector. Cable lengths to 165 feet (50 m) available.
USB 2.0: (USB 2.0) Data link to computer via 5 meter USB cable connected to this
connector.
A/D Converters
The ST-133 is available in a number of different configurations. The configuration
provided for a specific order is determined primarily by the choice of camera specified at
the time of purchase. With some configurations it is possible to have two A/D converters
installed. With others there can only be one. Both 12- and 16-bit converters are available
at speeds as high as 1 MHz. Not all converters are available for all cameras. Some
converters run at one speed only. Others can operate at more than one speed as selected
in software. Low-speed operation gives better noise performance; high-speed operation
allows faster data acquisition.
Readout Rate: A function of the installed converter. Speeds as high as 1 MHz (12- and
16-bits) and as low as 50 kHz are currently available.
Linearity: better than 1%.
Readout noise: 1-1.2 counts RMS on standard controllers.
Exposure (Integration) Time
5 msec to 2.3 hours (full frame or frame transfer).