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NEW PRODUCT NEWS—edited by Harv Weiner

System Synchronization Cards

The GPS-CPCI and CPCI-SG CompactPCl cards are board-level modules that output precise timing signals to the bus of a CompactPCl-compatible host system. The CPCI-SC derives time from an IRIG A or B time-code input, an internal oscillator, or an optional external one pulse per second. The GPS-CPCT can derive time from these sources as well as from the GPS satellite system with an accuracy of 1 ęs to UTC. Both CompactPCl modules are ideal for applications that require high-accuracy timing such as time tagging processed data, test data reduction, and system synchronization.

Information provided over the CompactPCl bus includes time, status, the time of the external event, and more. Interrupts generated by the programmable rate generator, the external event, and the time-compare occurrence are also provided. Depending upon the operating mode, you can program the hours offset from UTC, leap second, year, and daylight savings time. In the GPS-CPCI, year and leap-second insertion are automatically provided when CPS mode is specified.

The GPS-CPCI includes BNC connectors for the GPS antenna input and the user selectable code output. The CPCI-SG includes BNC connectors for the IRIG code input/output. The output code BNC for both units can be configured to output IRIG B AM/DC, one pulse per second, or a pulse rate. Their standard multipin connector contains the 1-pps pulse rate output, the programmable pulse rate output, the external event input signal, and the input/output connections for the AM/TTL/RS-422 versions of the input/output IRIG time code. The analog input/output time code is single-ended in its standard configuration or you can specify the unbalanced transformer coupling option.

A software development kit, SDK for PCI/CPCT, is optionally available for Windows 95/98 and Windows NT. The SDK includes a Windows NT kernel mode device driver, a Windows 95/98 VxD device driver, a DLL for accessing either of the drivers, a sample program, and code examples.

TrueTime, Inc.
(707) 528-1230
Fax: (707) 527-6640
www.truetime.com

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