1. INTRODUCTION
The DSPEC 50
®1
is a fully integrated gamma spectrometer with superior stability and digital
signal processing techniques resulting from over a half-century of continuous nuclear
instrumentation development by ORTEC
®
. The instrument controls and digital signal
processing was originally designed for use with high-purity germanium (HPGe) detectors, but it
is also compatible with other detector types.
2
Whether your application is in nuclear power, non-
destructive analysis, research physics, homeland security, real-time monitoring, or nuclear
safeguards, the DSPEC 50 and the dual-input DSPEC 502
®
deliver exceptional ease of use,
flexibility, and rock-solid count rate and peak position stability, across an Ethernet or USB
connection. The color touchscreen lets you monitor key aspects of instrument status and data
acquisition at a glance, without referring to your computer.
The DSPEC 50 is available in Standard (DSPEC 50 and DSPEC 502) and Advanced (DSPEC
50A and DSPEC 502A) models with both variants covered in this manual. In addition to the
Standard features, the Advanced models include additional output signals for the Change
Sample port, programmable coincidence and gate settings, counters for the Sample Ready and
Gate input ports, Web Services programming interface, and a Web Page interface for hardware
control and basic MCA emulation functions. Features available only on the Advanced models
are noted accordingly throughout this manual.
The DSPEC 50 is packed full of ORTEC’s premier performance-enhancing technology and
user-beneficial features including:
! Superior-performance digital circuitry with low-noise internal power supplies and detec-
tor bias gives you the best possible system resolution performance.
! The all-metal enclosure provides a high degree of isolation from electrical noise. It fits on
the benchtop or on a shelf in a 19-inch rack.
! Highly stable performance in the presence of temperature and count-rate variation.
! Wide-ranging digital filter settings with automated optimization.
! Ethernet (RJ45) interface for simple network connection, and USB or Ethernet interface
for use on the host computer.
! Connects to ORTEC SMART-1™ and DIM detectors, and to detectors with conventional
connectors.
! The large, color touchscreen provides the TCP/IP connectivity interface; and displays
status readouts including the preset count conditions, current live- and dead-time percent-
age (if active), input count rate, HV status, and optional gain- and zero-stabilizer correc-
1
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