• 16-input, high-performance MCA in a two-wide NIM
• Integral Ethernet connection for instant integration into CONNECTIONS spectroscopy networks
• 16k-channel data memory, 2³¹–1 counts per channel
• 4k-channel ADC (15-µs fixed conversion time)

The ORTEC Model 920E is a member of the EtherNIM family of multichannel buffers. Combined with appropriate computer hardware, ORTEC signal processing electronics, and ORTEC CONNECTIONS applications software running under Windows® 2000/XP,
EtherNIM multichannel buffers are the ideal data acquisition hardware for a wide
variety of applications in pulse-amplitude spectrometry. The 920E, a two-wide NIM,
accommodates up to 16 inputs, with independent start/stop/ preset control.
The unique “dynamic routing” feature enhances flexibility.

The Model 920E provides the following functions (see block diagram):

1. High-speed multiplexer/router with 16 inputs
2. 4k-channel, successive-approximation ADC, with fixed conversion time of <15 µs; memory divisible into 1, 2, 4, 8, or 16 segments; memory size selectable as 1024, 2048, 4096, or 16,384 channels. Connection between physical input and memory segment allocated under software control (“dynamic routing”).
3. Nonvolatile memory; 16k channels, 2³¹–1 counts per channel

The 920E is readily connected into an Ethernet environment under Windows 2000/XP. It may be integrated easily into existing networks. Control and spectral display is achieved by using a suitable ORTEC CONNECTIONS-32 applications package such as MAESTRO-32, AlphaVision-32, ScintiVision-32, or Renaissance.

The 920E employs a dual Direct Memory Access (DMA) architecture to maximize system throughput. The unique “dynamic routing” feature allows any one, or any group of inputs to be routed to any memory segment. This has many applications in areas as diverse as whole-body counting and fuel-pin scanning.

The communications protocol used by the 920E is the “traditional” NIM digital bus NIM/488¹ per DOE/ER-0457T (formerly NIM-GPIB) protocol used for several years in all ORTEC MCB products.²

For the “Do it yourself” programmer, software toolkits are available to simplify the task of making a user-written application communicate with the Model 920E.

¹Please refer to “Standard NIM Digital Bus (NIM/488),” DOE/ER-0457T, U.S. NIM committee, May 1990; Standard NIM Instrumentation System, NTIS, U.S. Department of Commerce, Springfield, Virginia 22161.

²The 920E also provides the ORTEC Dual-Port Memory connector on the rear panel. DPM
communications are still supported by ORTEC applications packages for historical reasons, but Ethernet communications are recommended in most cases, for convenience (especially over large distances) and for ease and reduced cost of implementation. An RS-232-C port is also provided for diagnostic purposes.

ORDERING INFORMATION