Precise time is acquired from the GPS satellite system or from time code signals. GPS synchronization provides 170 nanosecond RMS accurate time to UTC (USNO) and enables the bc637PCI-V2 to be an ideal master clock for precisely synchronizing multiple computers to UTC.

Extensive time code generation and translation are supported. The generator outputs either IRIG A, B, G, E, IEEE 1344, NASA 36, XR3 or 2137 in both amplitude modulated (AM) and DC level shift (DCLS) formats. The translator reads and may be used to discipline the 10 MHz oscillator to either the AM or DCLS format of IRIG A, B, G, E, IEEE 1344, NASA 36, XR3 or 2137 time codes.
The module also has a state-of-the-art DDS rate synthesizer capable of 0.0000001 PPS to 100 MPPS. An Event Time Capture feature provides a means of latching time of an external event. A key feature of the bc637PCI-V2 is the ability to generate interrupts on the PCI bus at programmable rates. These interrupts can be used to synchronize applications on the host computer as well as signal specific events.
Integration of the module is easily facilitated with optional drivers for Windows or Linux.

Key Features

• GPS Synchronized with 170 nanosecond RMS accuracy to UTC
• IRIG A, B, G, E, IEEE 1344, NASA 36, XR3 & 2137 Time Code Inputs and Outputs
• Simultaneous AM or DCLS Time Code Inputs
• Simultaneous AM and DCLS Time Code Outputs
• 100-nanosecond clock resolution for time requests
• Programmable <
• 1, 5, or 10 MPPS Rate Generator Output
• 1 PPS or 10 MHz Inputs
• External Event Time Capture/Interrupt
• Programmable Time Compare Output/Interrupt
• Zero Latency Time Reads
• Battery Backed Real Time Clock (RTC)
• PCI Local Bus Operation
• Universal Signaling (3.3V or 5.0V Bus)
• Linux & Windows Software Drivers/SDKs available