Sig32C-8 DSP/Multichannel Board

This board is not suggested for new applications. It is still supported by Signalogic, and may be available in some limited cases. Please check in with Signalogic.

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The Sig32C-8 combines a powerful 80 MHz Lucent (AT&T) DSP32C 32-bit floating-point DSP, up to 128k x 32 SRAM, and eight (8) channels of analog I/O together on a 7.5" PC plug-in board. Each channel contains 16-bit sigma-delta A/D and D/A converters and programmable input gain, output attenuation, and sampling rate. The sigma-delta technology gives each channel automatic anti-aliasing and reconstruction filters that track with the programmed sampling rate, and nearly perfect out-of-band rejection and linear phase. Sampling is simultaneous; each channel is DMA'd into DSP memory for further processing and transfer to the host computer.

Built-in sampling synchronization and high-speed FIFO data transfers allow the onboard QWbus to be used to combine boards and achieve up to 48 channels of simultaneous sigma-delta analog I/O.

Each processor 50 nsec instruction cycle yields up to two (2) 32-bit floating-point operations and up to three (3) simultaneous 32-bit memory accesses, allowing combined 40 MFLOP and 60 MOP operation.

Sig32C-8 Feature Summary

• 50 or 80 MHz DSP32C

• 128k x 32 0 wait-state SRAM

• 8 channel 16-bit sigma-delta analog I/O with typical dynamic range > 80 dB, independently programmable input channel gain and output channel attenuation

• up to 48 channels 16-bit sigma-delta simultaneous analog I/O using QWbus interboard synchronization

• 16-bit digital I/O

• QWbus parallel interboard communication interface and interboard analog I/O sampling synchronization

• 7.5" x 4.5" compact size (AT style form factor)

• PCI version available 4Q99

Sig32C-8 Specifications and Data Sheets

• A/D Converters (Crystal Semiconductor CS4216)(899,903 Bytes)

• D/A Converters (Crystal Semiconductor CS4216)(818,253 Bytes)

The Sig32C-8 is fully supported by Signalogic's Hypersignal®-Macro and Hypersignal-Acoustic software packages. In addition, both the board and Hypersignal packages can also be used with DirectDSP®, which offers C/C++, Visual Basic, and MATLAB® programming interfaces. Used in conjunction with the Sig32C-8, the DirectDSP/Hypersignal software combination provides sophisticated DSP-based instrumentation, visualization and display of waveforms, block-diagram based automation of development and test sequences, and numerous tools for all levels of DSP product, system, and algorithm development. The complete range of DSP/math functions, interactive waveform display and editing, difference equations, filter design, and real-time code development facilities offered by the software is fully active with the Sig32C-8. Display examples include interactive frequency domain waterfall and contour (joint time-frequency), .WAV display, pole-zero, unwrapped phase, and group delay.

Signalogic software takes full advantage of the multichannel capability of the Sig32C-8. Instruments can show any two of the eight channels at once, and any number and combination of the eight channels can be recorded and generated continuously to/from hard disk. Instrumentation includes digital oscilloscope, real-time spectrum analyzer, continuous signal generator (up to 8 channels), stimulus & response measurement, digital tape recorder, and more. The spectrum analyzer allows measurements such as transfer function (deconvolution), impulse response, and selective-band real-time digital filtering to be performed.

Additionally, the DSP32C DSP Source Code Interface allows real-time code to be designed, simulated and developed for the DSP32C, and results downloaded, tested and graphically debugged in real-time with the Hypersignal and DirectDSP® software packages.