18 PI-MAX/PI-MAX2 System Manual Version 5.F
ST-133 Controller
In addition to containing the power supply, the ST-133 Controller contains the analog and
digital electronics, scan control and exposure timing hardware, and controller I/O
connectors, all mounted on user-accessible plug-in modules.
Readout modes supported include full resolution, simultaneous multiple subimages, and
nonuniform binning. Single or multiple software-defined regions of interest can also be
tested without having to digitize all the pixels of the array. Completely flexible exposure,
set through software, is also fully supported.
The ST-133 contains two analog-to-digital converters (High Speed and Low Noise) and
the choice of A/D converter is software-selectable. After the data is converted, it is
transferred directly from the ST-133 to the host computer memory via a high-speed serial
link. (A frame buffer with standard composite video, either RS-170 (EIA) or CCIR,
whichever was ordered, is also provided.) A proprietary Interface card places the data
from the controller directly into the host computer RAM using Direct Memory Access
(DMA). The DMA transfer process ensures that the data arrives at sufficiently high speed
to prevent data loss from the controller. Since the data transfer rate is much higher than
the output rate from the A/D, the latter becomes the limiting factor for the data
acquisition rate. Once the digital data is in RAM, the image acquisition program can
transfer the image into its own working RAM for viewing and further processing.
Cables
Detector-Controller cable:
PI-MAX: 6050-0336, 15 foot/4.6 meter, 25-pin D
PI-MAX2: 6050-0499 cable set (6050-0492 Signal cable and 6050-0493 Power
cable), 15 foot
Computer Interface Cable:
TAXI: 6050-0148-CE, 25 foot/7.6 meter or
USB 2: 6050-0494, 16.4 foot/5 meter. Not supported by PI-MAX2.
Computer Interface Card: Princeton Instruments High Speed PCI card or user-
provided USB 2.0 interface card.
Manuals: PI-MAX System manual and optional application software manual.
Optional Application Software: Princeton Instruments' WinView/32 or
WinSpec/32 application program.
Optional Pulser: Programmable Timing Generator (PTG) plug-in module (with
PI-MAX to PTG cable) for the ST-133 that eliminates the need for an external timing
generator or a Stanford Research DG535 timing generator with cables.
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