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GE Intelligent Platforms in Charlottesville, Va., is introducing the ICS-1620 and ICS-1640 16-channel D/A converter PCI Express cards for demanding data acquisition applications, such as multichannel, high-frequency sonar systems in size- and weight-constrained applications like unmanned underwater vehicles (UUVs). The ICS-1620 provides a D/A converter complementary to the ICS-1640; the two are designed to work together in systems that need receive and transmit elements. In addition to ultrasound and acoustic sonar systems, the ICS-1620 and ICS-1640 are appropriate for test and measurement, as well as shock/vibration analysis. These devices for high-frequency sonar offer dynamic and frequency range and several redundant levels of channel-channel and board-board synchronization. The ICS-1620 has a 16-bit resolution D/A capability, while the ICS-1640 offers 24-bit resolution. Both operate at 2.5 MHz. The ICS-1620 and ICS-1640 have high dynamic range–16-bit/85 dB for the ICS-1620 and 24-bit/greater than 100 dB for the ICS-1640–which enables detection of small, quiet targets at long distances. This allows the ICS-1640 to provide directly sampled analog signals without the inherent performance degradation of a complex signal conditioning stage, while the requirement for signal conditioning on the ICS-1620 is substantially reduced. For more information, visit GE Intellligent Platforms online at www.ge-ip.com.