Product Specification (Rev 11/16/2010) MD-996-0001 Disciplined Oscillator Module Features • 1PPS and 10 MHz output signals • 15nSec accuracy (one sigma) • Automatic self-survey for improved timing accuracy • TRAIM (Timing Receiver Autonomous Integrity Monitoring) assured high PPS integrity • Contact factory for hold over specifications Description Application The MD-996 Disciplined Oscillator Module uses Vectron’s high quality Ovenized Quartz Crystal Oscillators (OCXO) with Trimble’s proven Mini-Thunderbolt™ platform. This module has an embedded 12-channel GPS receiver and provides both 10Mhz and 1 PPS signal output that is synchronized to GPS or UTC time. The MD-996 provides 15 nanosecond accuracy and tight holdover performance. The MD-996 can be used in a variety of precision timing applications and as always, Vectron is capable of customizing a solution for any application. • Digital Video Broadcast • Telecommunications time synchronization • Satellite communication frequency references Serial Communications Interface Antenna Input GPS Receiver Processor/ Controller 1pps out Output Frequency Generation OCXO Figure 1. Functional Block Diagram Vectron International • Tel: 1-88-VECTRON-1 • Web: www.vectron.com RF Output1 MD-996-0001 Disciplined Oscillator Module Performance Specifications1 General L1 frequency, C/A code (SPS) 12-channel, continuous tracking receiver Update Rate: 1 Hz 1 PPS Accuracy GPS 15 nanoseconds (one sigma) Output Frequency 10 MHz Phase Noise 10 Hz -120 dBc 100 Hz -135 dBc 1 KHz -145 dBc 10KHz -145 dBc 100KHz -145 dBc Holdover 27 us for 24 hours with 5 C temperature delta Stability +/- 50ppb from 0 to 60C when not in tracking Interface Specifications 1 PPS 10 MHz Connector: SMA-f (J3) TTL levels into 50 ohms 10 microsecond-wide pulse with the leading edge synchronized to GPS within 20 nanoseconds (one sigma) in static, time-only mode. Rising time: <20 nanoseconds Pulse shape affected by distributed capacitance of interface cable/circuit. Connector: SMA-f (J2) Antenna Interface Power and I/O SMA-f (J4) Connector: Molex 70543-0005 (6-pin) (J1) Serial Protocol Pin 1- NC Pin 2- GPS TXD 3.3V CMOS Level Pin 3- GPS RXD 3.3V CMOS Level (5V tolerant) – Pulled to 3.3V through a 10k Ohm resistor Pin 4 – Ground Pin 5 - +V Antenna – Supports 2.7VDC to 5.5VDC @ up to 100ma. Pin 6 - +5V± 0.25V @ <750ma (cold) and <350ma (warm) Trimble Standard interface Protocol (TSIP) binary protocol @ 9600, 8-None-1 Vectron International • Tel: 1-88-VECTRON-1 • Web: www.vectron.com 2 MD-996 Disciplined Oscillator Module Environmental Specifications Operating Temp 0 °C to +60 °C Storage Temp -40 °C to +85 °C Operating Humidity 5% to 95%, non-condensing Operating Altitude 18,000 m Physical Characteristics Mounting Four .130” diameter mounting holes For all Inquiries, Please Contact: USA: Vectron International, 267 Lowell Rd, Hudson, NH 03051 . . . .Tel: 1-88-VECTRON-1 Fax: 1-888-FAX-VECTRON EUROPE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tel: +49 (0) 3328-4784-17 Fax: +49 (0) 3328-4784-30 ASIA: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tel: +86-21-28909740 Fax: +86-21-28909240 Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Rev: 10.2010 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com 3