GNS183-UC
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GNS183-UC

GNS183-UC

Meinberg

Clock Module with GPS and Galileo Receiver

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IMS-GNS-UC: Clock Module with GPS and Galileo Receiver

The IMS-GNS-UC is a 24-channel satellite clock module with GNSS technology that has been developed from the ground up specifically for time and frequency synchronisation purposes. The GPS and Galileo receiver module provides a high-precision, high-accuracy time and frequency reference for your Meinberg IMS system and is designed to receive signals from the U.S. Global Positioning System (GPS) and the European Galileo system, allowing your Meinberg system to be used anywhere in the world.

How the Meinberg IMS-GNS works

The integrated GNS-UC receiver requires an externally connected GPSANTv2 antenna to receive signals from GPS satellites. It can be configured to accept signals from one constellation only or both systems concurrently in order to achieve superior availability and accuracy.

Once the IMS-GNS-UC is successfully initialised and synchronised, it distributes a 1PPS (pulse-per-second) reference clock signal and a 10 MHz reference frequency. These are then used by the IMS output modules to generate a wide variety of specific output signals used in a diverse range of applications. The precision and accuracy of the two aforementioned reference signals are critical in determining the corresponding precision and accuracy of the output signals.

The module also supports the IMS platform's MRS functionality (Multi Reference Source) to utilise all available reference sources for synchronisation beyond the GNSS signals.

The IMS-GNS-UC module is hot-swappable and is automatically detected and utilised when installed, even while the system is still in operation.

Use of Two IMS Receiver Modules

In systems equipped with two redundant IMS receiver modules, an RSC switchover module is used to switch between the two reference sources. The RSC serves to switch over the pulse and frequency outputs and serial interfaces of the connected reference clocks.

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Key Features
  • Highly configurable pulse signals, including pulse-per-second and pulse-per-minute
  • RS-232 interface for time string output and also for synchronization using time string input and PPS signal
  • Included GPSANTv2 antenna uses downconverter technology to enable long transmission routes of up to 1100 m (1200 yards)
  • 72-channel GPS L1 C/A code- and Galileo E1-B/C receiver with wide selection of oscillators
Current Draw 1.1 A to 1.4 A (depends on oscillator option)
Interface RS-232 interface for time string output and also for synchronization using time string input and PPS signal
Humidity Max. 85 % (non-condensing) at 40 °C
Frequency Outputs 0.125 Hz and 10 MHz
Pulse outputs Various programmable pulse signals (TTL levels), including pulse-per-second and pulse-per-minute, outputs over four discrete channels, delivery via external output modules
Accuracy of Pulse Outputs Depends on oscillator option: < ±100ns (TCXO, OCXO LQ) < ±50ns (OCXO SQ, OCXO MQ, OCXO HQ, OCXO DHQ, Rubidium)
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
Synchronisation 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 Inputs 35.4 MHz (intermediate frequency of GPSANTv2)
Backup Battery Type CR2032 (lithium button cell)
Accuracy of Frequency Outputs Accuracy dependent on oscillator
Receiver 72-channel GPS L1 C/A code and Galileo E1-B/C receiver
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Data Sheet Click here to view