Meinberg IMS-GPS User manual

Meinberg Radio Clocks
Lange Wand 9
31812 Bad Pyrmont, Germany
Phone: [phone]
Fax: [phone]
https://www.meinbergglobal.com
[email protected]
IMS-GPS: Clock Module with GPS Satellite Receiver
This product is only compatible with Meinberg's line of modular IMS LANTIME systems.
Visit the [1]IMS Information Page to learn more.
The IMS-GPS is a clock module with an integrated GPS receiver for Meinberg's IMS platform. This GPS
receiver is capable of receiving and decoding GPS satellite signals using the included Meinberg [2]
GPSANTv2 antenna and decoding them to synchronize the integrated clock.
This latest generation of the IMS-GPS module has been developed on the basis of Meinberg's new common
technology platform to allow all users to benefit from new features in the future. Find out more [3]here.
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)
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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.
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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
* Fail: Clock synchronization state
* Ant: Antenna connection state
* Nav: GNSS geolocation state
* Init: Initialization of module firmware and communication with IMS software
Type of Antenna Included [2]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 [4]IMS-BPE modules
Accuracy of Frequency
Outputs Accuracy dependent on oscillator (Standard: OCXO-SQ), see [5]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., [4]IMS-BPE).
Accuracy of Pulse Outputs Depends on oscillator option:
< ±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: [6]Meinberg Standard Time String , SAT, Uni Erlangen (NTP),
SPA, Sysplex, RACAL, NMEA0183 (RMC,GGA,ZDA), Meinberg GPS, COMPUTIME,
ION, [7]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
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Supported Timecode
Formats Dedicated timecode output (DCLS/AM) via output module (e.g., [4]IMS-BPE) and input
capability via appropriate module (e.g., [8]IMS-MRI-Modul) IRIG B002 (DCLS) / IRIG
B122 (AM, 1 kHz carrier): 100pps, BCD time-of-year
IRIG 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)
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.
Manual
There is no online manual available for this product.: [9]Contact us
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Links:
[1] https://www.meinbergglobal.com/english/products/modular-sync-system.htm
[2] https://www.meinbergglobal.com/english/products/gps-antenna-converter.htm
[3] https://www.meinbergglobal.com/english/news/meinberg-security-advisory-mbgsa-2023-04-lantime-firmware-v7-08-002.htm
[4] https://www.meinbergglobal.com/english/products/ims-output-modules.htm
[5] https://www.meinbergglobal.com/english/specs/gpsopt.htm
[6] https://www.meinbergglobal.com/english/specs/timestr.htm
[7] https://www.meinbergglobal.com/english/specs/capstr.htm
[8] https://www.meinbergglobal.com/english/products/ims-mri.htm
[9] mailto:[email protected]
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