Appendix A Specifications 187
SERIAL COM: Data link to computer via proprietary cable connected to this 9-pin
“D” connector. Cable lengths to 165 feet (50 m) available. An optional fiber
optic link is available to extend the distance to ~3300 feet (1 km).
USB 2.0: Data link to computer via USB cable inserted at this connector. Cable
length of 5 meters is standard. Other lengths may be available. Contact Customer
Service for more information.
TTL I/O: 8 TTL Inputs and 8 TTL Outputs are provided for control via the TTL
connector. Refer to Chapter 13, "TTL Control" for more information.
A/D Converters
Standard: 16-bit, 100 kHz readout rate only.
Optional: Dual digitizers with either 100 kHz/1 MHz, 50 kHz/1 MHz, or
1 MHz/5MHz readout rates. Software-selectable. Low-speed operation gives better
noise performance; high-speed operation allows faster data acquisition.
Linearity: better than 1%.
Readout noise: 1-1.2 counts RMS on standard controllers.
Shutter Compensation Time
The following numbers apply for a 1 MHz ST-133.
Miscellaneous
Dimensions: See Appendix B.
Controller Weight:
ST-133A: 13 lb (5.9 kg)
ST-133B: 12.5 lb (5.7 kg)
Power Requirements: Nominally 100, 120, 220 or 240 VAC. Refer to
Fuse/Voltage label on rear of Controller for details. Required DC voltages are
generated in the controller. Power to detector is supplied via controller cable.
Environmental Requirements:
Storage temperature: -20 C to 55 C;
Operating temperature: 5ºC to +30ºC; For NTE/NTE 2 Detectors, the
operating temperature range over which specifications can be met is
18 C to 23 C
Relative humidity: <50% noncondensing.
TTL Requirements: Rise time 40 nsec, Duration 100 nsec.
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