Saturn was designed from the ground up with a comprehensive set of features to meet the challenges of rugged environments and applications:

• Memory is soldered down to avoid problems that can occur with commercial style SODIMM type memory modules
• The 50% thicker PCB increases rigidity and improves reliability of fine pitch and high-ball-count BGA solder joints
• All I/O connectors are latching for increased ruggedness
• A bottom-side heat spreader provides more efficient cooling than a traditional heat sink. Processor and memory chips are both thermally connected to the heat spreader. In addition the exterior surface features recessed thermal pads for improved thermal connectivity to the system enclosure.
• All components are rated and/or tested to ensure reliable -40 to +85°C operation

Saturn is a member of Diamond's 2-in-1 series of SBCs with integrated data acquisition. For applications requiring precision analog I/O, a 2-in-1 SBC is an ideal choice because it reduces the number of boards in the system, resulting in a system that is smaller, lighter, lower cost, and easier to assemble and maintain. The features of the Saturn DAQ circuit surpass those found on most other embedded SBCs in both variety and quality, providing a comprehensive, professional quality subsystem backed with top of the line software support. "A" models include the full DAQ circuit with both analog and digital I/O features, while "D" models include only the digital I/O features.

Saturn's data acquisition circuit features autocalibration, which maintains best accuracy of the A/D and D/A circuits regardless of time and temperature swings. Using the supplied Universal Driver software library, the circuit can be quickly calibrated to within +/-2LSB accuracy at any time, relative to the on-board precision reference voltage circuit.

The A/D circuit includes 16 single-ended / 8 differential analog input channels with programmable input ranges and a maximum aggregate sampling rate of 250KHz. A built-in programmable counter/timer supports accurate high-speed sampling with precise timing. The 2048-sample FIFO with programmable threshold ensures error-free sampling and enables you to tune the performance of the circuit to minimize interrupt processing overhead.

The D/A circuit consists of 4 16-bit D/A voltage outputs with independently programmable output ranges including 0-10V, +/-10V, 0-5V, and +/-5V. A 2048-sample waveform buffer is included to support arbitrary waveform generator functions on up to 4 channels simultaneously.

The digital I/O circuit consists of GPIO, counter/timers, and pulse-width modulators. The GPIO circuit provides 22 buffered digital I/O lines, consisting of one 8-bit port and 14 1-bit ports. Each port is individually programmable for input or output. The 1-bit direction controllable ports provide better matching of input and output quantities to each application. Jumper configuration enables selection of 5V/3.3V logic levels and pull-up or pull-down resistors on the digital I/O lines.

The 8 32-bit programmable counter/timers feature both up and down counting with clocking selectable from an external digital signal or the on-board 50MHz clock. Counters can be used for generating programmable output frequencies with programmable output pulse widths, counting external events, generating interrupts to the host processor at a programmable rate, and driving A/D sampling at precise frequencies with perfect timing between samples.

The circuit further includes 4 24-bit programmable pulse width modulators also driven by the on-board 50MHz clock. These feature programmable rate, duty cycle, and polarity, with real-time rate and duty cycle update capability.

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	Software Support

Diamond Systems' Universal Driver software provides unmatched power and flexibility for embedded data acquisition programming with PC/104 and small form factor I/O boards. It provides flexible C-language programming support for Windows and Linux to control all data acquisition features on Saturn, as well as Diamond's MiniCard data acquisition modules that can be used with Saturn.

A powerful and convenient graphical control panel provides instant, easy access to all data acquisition features on the board. It can be used for proof of concept, testing, and even system debugging.

Visit our "Universal Driver software" page to learn more.

Saturn provides two sockets for the installation of I/O expansion modules:

• A PCIe/104 OneBank I/O expansion socket provides 4 PCIe x1 lanes and 2 USB 2.0 ports to interface with hundreds of PCIe/104 I/O modules from vendors around the world. Only top side expansion is supported, since the bottom side of Saturn is covered by the heat spreader.
• A full-size PCIe MiniCard socket supports both PCIe and USB minicards. Saturn supports Diamond's complete line of PCIe MiniCards.

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	What is PCIe/104 OneBank™?

OneBank's is the name given to the PCIe/104 standard that utilizes a more compact, cost effective connector to support rugged, high-speed I/O expansion. The original PCIe/104 connector features 3 "banks" of contacts. The 2nd and 3rd banks contain PCIe x8 / x16 signals that are not supported on Atom processors nor used by most I/O expansion modules. By eliminating these signals, a smaller and more cost effective connector can be used to provide compatibility with any PCIe/104 I/O module that uses a PCIe x1 or USB host connection, while freeing up precious PCB space for additional I/O or connectors. OneBank is an official expansion connector supported by the PC/104 Consortium (of which Diamond Systems was a founding member). Click here to learn more about OneBank. Click here to learn more about PCIe/104.