IMS - Modular SynchronizationIMS-GPS: Clock Module with GPS Satellite Receiver
Key Features
- 12 channel GPS C/A code receiver with wide selection of oscillators
- 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)
Product Description
The IMS-GPS is a 12-channel satellite clock module with GPS technology that has been developed from the ground up specifically for time and frequency synchronization purposes. The IMS-GPS 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), allowing your Meinberg system to be used anywhere in the world.
How It Works
The integrated GPS receiver requires an externally connected GPSANTv2 antenna to receive signals from GPS satellites.
Once the IMS-GPS is successfully initialized and synchronized, 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 utilize all available reference sources for synchronization beyond the GNSS signals.
The IMS-GPS module is hot-swappable and is automatically detected and utilized 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.
Characteristics
| Receiver | 12-channel GPS L1 C/A code receiver |
| Input Frequency | 35.4 MHz (intermediate frequency of GPSANTv2) |
| Status Indicators |
Status indicated by 4 LEDs
|
| 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 |
| 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 | Frequency Synthesizer for arbitrary frequencies between 0.125 Hz and 10 MHz, adjustable phase, output via external modules such as IMS-BPE modules |
| Accuracy of Frequency Outputs | Accuracy dependent on oscillator (Standard: OCXO-SQ), see oscillator list |
| 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 (e.g., IMS-BPE). |
| Accuracy of Pulse Outputs | Depends on oscillator option:
< ±100ns (TCXO, OCXO LQ) < ±50ns (OCXO SQ, OCXO MQ, OCXO HQ, OCXO DHQ, Rubidium) |
| Interface | RS-232 interface for time string output and also for synchronization using time string input and PPS signal |
| 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 |
| Output Control Options | Pulse, string, and frequency outputs can all either be enabled or disabled depending on clock sync state or left permanently enabled |
| Supported Timecode Formats |
Dedicated timecode output (DCLS/AM) via output module (e.g., IMS-BPE) and input capability via appropriate module (e.g., IMS-MRI-Modul) IRIG B002 (DCLS) / IRIG B122 (AM, 1 kHz carrier): 100pps, BCD time-of-yearIRIG B003 (DCLS) / IRIG B123 (AM, 1 kHz carrier): 100pps, BCD time-of-year, SBS time-of-day IRIG B006 (DCLS) / IRIG B126 (AM, 1 kHz carrier): 100pps, BCD time-of-year, year IRIG B007 (DCLS) / IRIG B127 (AM, 1 kHz carrier): 100pps, BCD time-of-year, year, SBS time-of-day IEEE1344 (AM, 1 kHz carrier): Code as per IEEE1344-1995, 100pps, BCD time-of-year, SBS time-of-day, IEEE1344 extensions for date, timezone, DST and leap seconds in "control functions" segment C37.118: as with IEEE1344, but with inverted prefix bit for UTC offset AFNOR NFS-87500 (AM with 1 kHz carrier/DCLS): Code as per AFNOR NFS-87500, 100pps, BCD time-of-year, full date, SBS time-of-day |
| Antenna Connector | BNC connector |
| Backup Battery Type |
CR2032 (lithium button cell)
In the event of loss of power to the main system, this battery powers the real-time clock and also ensures that GNSS almanac data is properly buffered in RAM. Lifetime of lithium battery: Min. 10 years |
| Operating Voltage | +5 V DC |
| Current Draw | 1.1 A to 1.4 A (depends on oscillator option) |
| Mixing Frequency | 10 MHz (from receiver) |
| Supported Temperature | Operation: 0 to 55 °C (32 to 131 °F) Storage: -20 to 70 °C (-4 to 158 °F) |
| Supported Humidity | Max. 85 % (non-condensing) at 40 °C |
| Warranty | Three-year warranty |
| RoHS Status of Product | This product is fully RoHS-compliant. |
| WEEE Status of Product | This product is handled as a B2B (Business to Business) category product. To ensure that the product is disposed of in a WEEE-compliant fashion, it can be returned to the manufacturer. Any transportation expenses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself. |
Downloads
Short Info Sheet
Manuals
- Handbuch (deutsch) zur Zeit nicht verfügbar.
- Manual (english) not available at current time.
- For drivers, SDKs, tools and utilities, please check our Download Section
