GPS Synchronization

General Standards 24DSI12

12 Channel, 24-Bit Analogue Input, Compatible with PCI, PCI-X, PCIe, PC104P and PMC

Low noise, 24-bit resolution, low phase distortion and multi-board synchronization make the General Standards PC104P-24DSI12, PMC-24DSI12, PC104P-24DSI6LN and the PMC-24DSI6LN boards ideal for state-of-the-art sonar and noise monitoring applications.

The GPS synchronization feature allows the 24DSI12 to synchronize to an external timing reference, the external sync input pins in the I/O connector can be configured to accept a 1PPS GPS clock (LVDS or TTL).

Advanced Features of the 24DSI12

• Supports GPS Synchronization through a 1PPS Input
• With 200 KSPS Sample Rate per Channel
• 12 Differential 24-Bit Analog Input Channels
• Delta-Sigma Converter per Channel, with Linear Phase Digital Antialias Filtering
• Software-Selectable Input Ranges: 2.5V, 5V, 10V
• 256 K-sample FIFO Buffer
• Synchronous or Independent ADC Clocking
• Internal Sample Rate Generators
• 256 K-sample FIFO Buffer

Background Information on GPS

The GPS system (also called NAVSTAR) includes 24 satellites each with three or four onboard atomic clocks. The US Naval Observatory monitors the satellite's clocks and sends control signals to minimize the differences between their atomic clocks and a master atomic clock for accuracy and traceable to national and international standards (known as UTC).

For time synchronizing a clock, the GPS signal is received and distributed by a master clock, time server, or primary reference source to a device, system, or network so the local clocks are synchronized to UTC. Typical accuracies range from better than 500 nanoseconds to 1 millisecond anywhere on earth.

The GPS clock synchronization eliminates the need for manual clock setting (an error-prone process). The benefits are numerous and include: legally validated time stamps, regulatory compliance, secure networking, and operational efficiency.

More details of the General Standards 24DSI12 hardware is available.

Please contact Sarsen Technology for full details of the General Standards GPS Synchronizastion solutions.

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