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UCS30-1K Specifications

Hardware

Physical: Bench top enclosure with USB 1.1 interface includes preamplifier, amplifier, detector high voltage, up to 4096-channels depending on model, Multichannel Analyzer with data memory, LLD and ULD. Pulse height analysis and Multichannel Scaling modes. Fully compatible with many scintillation detectors and commercial tube bases.

Data Input: BNC connector multi-function input. On-board relays select internal preamplifier, shaping amplifier or direct to ADC when using external signal processing.

Gate Input: BNC connector. Normally open gate. TTL low closes gate to ADC.

HV Output: MHV connectors. Positive output, (switched positive or negative outputs with HV option). (SHV connectors optional), 0-2048 volts, 1mA maximum current at 1000 volts. High voltage is fully regulated and computer controlled in 2 volt increments.

MCS Input: BNC connector bypasses internal preamp/amplifier. Accepts positive TTL signal >150nsec., 5MHz maximum rate.

ROI Output: BNC connector. Generates pulse each time an event occurs in set region of interest. Requires ROI option.

MSB Output: BNC connector. TTL output of dwell counter most-significant-bit for synchronizing Mossbauer drive.

USB: USB type “A” connector. USB 1.1 standard.

Preamplifier: Charge sensitive preamplifier for use with scintillation detectors and PMTs.

Amplifier: Bipolar shaping amplifier with selectable peaking times of 1, 2, 4 and 8µsec. Computer controlled coarse and fine gain from x1 to x160. Input polarity selection.

External Preamp Power: DB-9F connector supplies ±12 volts.

ADC: Fixed conversion 10usec. Computer selected conversion gain from 256 to 4096 channels depending on model. Direct input accepts pulse peaking times of 0.5µsec. to 10µsec. Includes dead-time correction when used in Live-time mode.

LLD & ULD: Independently computer controlled discriminators over entire input range. Operates prior to ADC for reduced system dead time.

Modes: MCA for pulse height analysis, MCS for half-life decay or other time related studies and Mossbauer mode.

Timers: Real-time or Live-time operation selectable in 1-second increments for PHA, or dwell times from 10msec. to 60sec. per channel in MCS mode. In Mossbauer mode, 100usec. to 500usec.

Data Memory: On-board dynamic RAM, up to 4096 channels x 3 Bytes for data, plus region-of-interest flag.

Deadtime: System dead time is computed and displayed on screen during acquisition.

Power: AC line, 100-250VAC, 50/60Hz, auto-sensing internal power supply with Universal Power Cord input.

 

Software

System: Operates under Windows 2000/XP.

Display: Color or monochrome monitor, Vertical scale adjusts from 32 to 16M and LOG display. Horizontal 4096 channels depending on model with expansion down to 128 channels.

Time Mode: Preset live-time or preset real-time selection. Both times are recorded and displayed.

Count Mode: Preset count mode integral of region-of-Interest.

ROIs: Multiple Regions-of Interest using color coding.

Integral: When cursor is in ROI, computes gross area, net area with end point averaging, centroid and FWHM.

Energy Cal: 2-point linear or 3-point quadratic converts cursor position reading directly to energy units. (Time units in MCS mode.)

Autocalibrate: Use with Cs-137 source to automatically calibrate system for 1 keV/channel.

Bkgd Buffer: Used to store background spectrum for time normalized background subtraction.

Subtract: Subtracts channel-by-channel time normalized data stored in Background Buffer from display data.

Smooth: 3-point smoothing of displayed data. Does not modify data in acquisition memory.

Control: Software control of Input Selector, High Voltage and Polarity (with HV option), Amplifier Input Polarity, Peaking Time, Gain, Lower and Upper level discriminators, and ADC Conversion Gain.

File: Save or load data file and header information in binary format or as CSV/TSV files. Save or load setup files for specific configurations.

Clipboard: Clips data and header information, graphic screens, ROI data containing, centroid, FWHM, gross and net integrals, and header information in spreadsheet compatible format for transferring into other applications.

ISOMATCH: Isotope library text file with peak markers and labeling for overlaying on spectrum. Provides quick isotope identification. Libraries may be edited and extended using word processors or text editor programs.

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