RD/GPS: Redundant GPS-synchronized Time and Frequency Reference in 1U Housing



The Meinberg RD/GPS is a fully redundant GPS-synchronized time and frequency reference for demanding applications like Digital Broadcasting and Telecommunication Networks. The 1U rackmount chassis integrates two Meinberg GPS Receivers (each with its own oscillator), dual power supplies and an automatic switchover logic and provides frequency and pulse outputs.

Key Features

Warranty Period (Years): 3 RoHS-compliant
  • Integrated event log storing the last 80 alarm events
  • RS-232 serial interface providing TOD strings in various formats and providing firmware update, local control and monitoring functionality
  • Redundant power supplies (100 - 240 V AC, 50 - 60Hz / 100-200 V DC)
  • 8x PPS PulsePerSecond outputs
  • 2x Meinberg GPS Antenna System - with integrated downconverter for cable runs up to 700m without amplification and reliable robust signal reception characteristics
  • 8x 10MHz TTL or low phase noise sinewave outputs
  • Alarm relay output, changeover contact
  • 2x independant high precision GPS clocks, each with its own ultra stable OCXO-HQ oscillator, providing excellent holdover performance and signal quality




Product Description

The integrated network management processor supports remote control and monitoring. Two serial ports offer local control and monitoring capabilities and can be used for generating serial time strings in various formats to feed TOD information into a wide range of devices.

The Meinberg RSC switchover logic ensures that the time and frequency synchronization signal generation from the two GPS receivers is automatically switched to the output connectors based on the synchronization state of the receivers. A manual override is possible both locally by using the front panel controls and remotely using the integrated network control and monitoring processor.



Characteristics

Receiver Type MEINBERG GPS C/A-Code Receiver
Status Indicators
  • LED LOCK
    shows that the calculation of the position has been achieved after reset
  • LED FAIL
    shows that the internal timing has not been synchronized or that a system error occurred
  • LED CLOCK 1 / CLOCK 2
    shows the current switching state of the board
  • LED REMOTE
    indicates remote controlled operation
  • LED POWER 1 / POWER 2
    shows the current status of the power supplies
Type of Antenna Included GPSANTv2 antenna with innovative downconverter technology that allows transmission routes of up to 300 m using RG58 cable, 700 m using RG213 cable, and 1100 m using H2010 Ultraflex cable
Control Elements The configuration of the device is done by using the monitoring software and the network interface in the front panel.
Synchronization Time Max. 1 minute in normal operating conditions
Max. 25 minutes (average 12 minutes) upon first initialization or in the absence of saved satellite data
Frequency Outputs 10 MHz sine 1 Vpp into 50 Ohm or 10 MHz TTL 2.5 Vpp into 50 Ohm
Accuracy of Frequency Outputs see oscillator specification
Pulse Outputs Change of second (P_SEC, TTL level)
Accuracy of Pulse Outputs
  • Better than +-50 nsec after synchronization and 20 minutes of operation
  • Better than +-2usec in the first 20 minutes after synchronization
Interface Two independent serial RS-232 interfaces, configurable via GPS Monitor Software
Serial Time String Output Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200 Baud
Framing: 7E1, 7E2, 7N2, 7O1, 7O2, 8E1, 8N1, 8N2, 8O1
Time String Formats: Meinberg Standard Time String , SAT, Uni Erlangen (NTP), SPA, Sysplex, RACAL, NMEA0183 (RMC,GGA,ZDA), Meinberg GPS, COMPUTIME, ION, Capture String
Antenna Connector Female BNC antenna input connectors
Backup Battery Type When main power supply fails, hardware clock runs free on quartz basis, almanac data is stored in RAM
Life time of lithium battery min. 10 years
Firmware Flash-EPROM, bootstrap loader
Form Factor 19'' aluminium case (1U) Schroff Multipac
Physical Dimensions 485mm x 45mm x 305mm
Protection IP20
Supported Temperature Operational: 0 - 50 °C (32 - 122 °F)
Storage: -20 - 70 °C (-4 - 158 °F)
Supported Humidity Max. 85 % (non-condensing) at 40 °C
Contents of Shipment The package includes two Meinberg GPS Antenna/Converter Units in waterproof housing with coax cable, mounting kit and two cables for mains power line.
Warranty Three-year warranty


Downloads

Short Info Sheet



Manuals


Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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