TIMING, TEST & MEASUREMENT bc635/637CPCI Compact PCI Time & Frequency Processor KEY FEATURES Symmetricom’s bc635/637 CompactPCI the CPCI bus with zero latency, which allows ™ • CompactPCI Bus Operation receiver module provides precision time and for very high speed time requests. The frequency reference to the host computer oscillator is rate-matched (disciplined) to the • GPS or Time Code Inputs system and peripheral data acquisition input time source and drives the precision • Time Code Outputs systems. Time is acquired from either the GPS 10 MHz frequency output and time code • Pulse Rate Outputs satellites using a supplied antenna/receiver generator circuitry. If time is lost, the module (bc637CPCI only) or from time code signals, will continue to maintain time (flywheel). • Frequency Outputs (1, 5, or 10 MHz) typically IRIG B. Integration of the module is Both time code generation and translation are • External Event Capture facilitated with optional drivers for Windows supported. The generator supplies IRIG B Register/Interrupt NT/2000/XP, Linux, Solaris and VxWorks. time code output that is synchronized to the • Programmable Periodic CompactPCI uses industry standard mechan- input time source. The translator decodes Output/Interrupt ical components and high-performance IRIG A, IRIG B and NASA 36. connector technologies to provide a system • Programmable Time Strobe that is optimized for rugged applications. An Event Time Capture feature provides a Output/Interrupt means of latching time for an event input. The • IEEE 1344 Compliant IRIG B Time Code Central to the operation of the module is a module can also be programmed to generate • Windows NT/2000/XP Support disciplined 10 MHz oscillator and 100 a periodic pulse rate as well as to generate a nanosecond clock. Current time (days to single time strobe at a pre-determined time. 100 nanoseconds) can be accessed across CPCI Time & Frequency Processor (shown with optional antenna/receiver, bc637CPCI) bc635/637CPCI SPECIFICATIONS ELECTRICAL SPECIFICATIONS • GPS subsystem (bc637PCI only) • Real time clock Time accuracy: <1 μSecond Bus request resolution: 100 nanoseconds Position accuracy: 10 to 20 meters SEP (SA off) Latency: Zero Maximum velocity: 300 meters/sec (1,080 KPH) Major time format: Binary or BCD Number of channels: 8 Minor time format: Binary Receiver frequency: 1.575 GHz (L1, C/A code) Time to first fix: Worst case: 5 to 15 minutes • Time code translator Solution modes: 1, 3, and 4 satellites Time code formats: IRIG A, IRIG B*, NASA 36 • Connector types (Modulated or DCLS) Time accuracy: <5 μS (modulated) J1 - Module I/O: 15-pin ‘DS’ <1 μS (DCLS) J2 - GPS interface: 15-pin high-density ‘DP’ Modulation ratio: 3:1 to 6:1 Input amplitude: 500 mV to 5V P-P ENVIRONMENTAL SPECIFICATIONS Input impedance: >10KΩ • Temperature Module Ant/Rcvr * See IEEE 1344 Compliance below Operating: 0ºC to 70ºC -40ºC to 70ºC • Time code generator Storage: -30ºC to 85ºC -55ºC to 85ºC Time code format: IRIG B* Humidity Modulation ratio: 3:1 Operating: 5% to 95%* 95% Output amplitude: 4 V P-P (fixed) into 50Ω *non-condensing DC level shift: TTL/CMOS Operating altitude: Up to 18,000 meters MSL * See IEEE 1344 Compliance below • IEEE 1344 compliance OPTIONS The translator processes the 27 control function bits of IRIG B time code as • Extended length GPS antenna cable set forth in IEEE 1344 (see page 52 of this catalog). The 27 control function bits • Isolation transformer time code input provided by the input IRIG B time code are output in the generated IRIG B time • Ovenized crystal oscillator code one time frame after received. If the input IEEE 1344 bits are not present • ‘D’ connector (J1) to BNC adapter in the input IRIG B time code, the last two digits of year are placed in bits 1-9 of the control function field of the generated IRIG B time code. • Drivers: Windows NT/2000/XP, Linux, Solaris, VxWorks Contact factory for additional driver support • Timing functions Heartbeat clock (TTL, 50Ω): Programmable Periodic, <1 Hz to 250 kHz Time strobe (TTL, 50Ω): Programmable 1 μSec through hours ORDERING INFORMATION Event capture (TTL, 50Ω): 100 nSec resolution, zero latency • BC12063-1000 bc635CPCI Time & Frequency Processor 1 PPS pulse rate (TTL, 50Ω): Positive edge on-time • BC12063-2000 bc637CPCI GPS Time & Frequency Processor (includes GPS antenna/receiver & • Disciplined oscillator 50’ (15 m) cable) Frequency: 10 MHz • BC11736-2000 Ovenized oscillator option (factory installed) Outputs: 1, 5, or 10 MHz (selectable) Rate stability • BC11576-1000 'D' to BNC adapter (provides IRIG in, IRIG out, 1 pps out, event in, periodic out) Standard VCXO: 5.0E-8 short term ‘tracking’ 5.0E-7/day long term ‘flywheeling’ • BC11576-9860115 'D' to BNC adapter (provides IRIG in, IRIG out, Optional oven osc: 2.0E-9 short term ‘tracking’ 1 pps out, 1 pps in, event in) 5.0E-8 /day long term ‘flywheeling’ • PCI-BNC-CCS 'D' to BNC adapter (provides IRIG in, IRIG out, Sync sources: GPS, Time Code, 1 PPS, 10 MHz 1 pps out, 1 pps in, event in, DCLS out) ™ • PCI local bus Specification: CompactPCI Specification PICMG 2.0 R2.1 Specification 2.2 Size: Single-width 3U (3.94” x 6.3”) Device type: PCI Target, 32 bit, 5V signalling Data transfer: Byte, Half Word, Word Interrupt levels: Automatically Assigned (PnP) Power: bc635CPCI +5v @ 380mA +12v @ 50mA -12v @ 42mA bc635CPCI + OCXO +5v @ 380mA +12v @ 96mA -12v @ 42mA bc637CPCI (with antenna) +5v @ 380mA +12v @ 300mA -12v @ 42mA bc637CPCI (with antenna) + OCXO +5v @ 380mA +12v @ 340mA -12v @ 42mA SYMMETRICOM, INC. PICMG® and the PICMG® logo are registered 2300 Orchard Parkway trademarks of the PCI Industrial Computers San Jose, California Manufacturing Group. 95131-1017 tel: 408.433.0910 fax: 408.428.7896 info@symmetricom.com ©2010 Symmetricom. Symmetricom and the Symmetricom logo are registered trademarks of Symmetricom, Inc. All other trademarks are the www.symmetricom.com property of their respective companies. All specifications subject to change without notice. DS/CPCI/0610/PDF