The frequency locking of the master oscillator to the GPS system enables the module GPS180 to generate fixed and programmable standard frequencies with very high accuracy and stability. Various oscillator options allow to meet different requirements concerning the accurracy of the outputs in the most cost efficient way.
The pulse generator of GPS180 generates pulses per second and per minute. Four programmable outputs are available. The pulses are synchronized to UTC second.
Up to four serial interfaces are available for sending time strings. These ASCII telegrams include information regarding time, date and status of the GPS receiver.
The module provides two inputs for measurement of asynchronous time events. These capture events are shown on the LC-Display and can be read via a serial interface.
The front panel integrates a LC-Display that shows information regarding the GPS receiver in different menus. In combination with four push buttons it is also used to setup all configurable parameters.
|Type of receiver||12 channel GPS C/A-code receiver|
|Type of antenna||Remote powered GPS antenna/converter unit, up to 300m distance to antenna with RG58 and up to 700m distance with RG213 cable|
|Display||LC-Display, 4 x 16 characters|
|Cable type||Coaxial cable RG58 indoor or outdoor usage (BNC-, N-Norm-connector)|
|Status info||Fail-LED shows that the internal timing has not been synchronized or that a system error occurred
Lock-LED shows that the calculation of the position has been achieved after reset
|Synchronization time||Max. 1 minute in normal operation mode, approx.
12 minutes after a cold start (discharged buffer battery)
|Frequency outputs||10 MHz, 1 MHz, 100 KHz or (optional) 5MHz, TTL level
Synthesizer 1/8 Hz up to 10 MHz (TTL level, sine wave 1.5Veff, open drain)
Accuracy: ±1·10E-9 (timebase OCXO LQ), GPS-synchronous for more than 20 minutes
Different oscillators available, look at oscillator options
|Pulse outputs||Pulse per second (PPS) and pulse per minute (PPM). TTL level, pulse width: 200msec|
|Accuracy of pulse outputs||Depends on oscillator option:
< ±100ns (TCXO, OCXO LQ)
< ±50ns (OCXO SQ, OCXO MQ, OCXO HQ, OCXO DHQ, Rubidium)
|Interface||Two independent serial RS232-interfaces, menu configurable|
|Data format of interfaces||Baud rate: 300, 600, 1200, 2400, 4800, 9600, 19200 Baud
Data format: 7E1, 7E2, 7N2, 7O1, 7O2, 8E1, 8N1, 8N2, 8O1
Time telegram: Meinberg Standard-Telegram , SAT, Uni Erlangen (NTP), SPA, Sysplex, RACAL, NMEA0183 (RMC,GGA,ZDA), Meinberg GPS, COMPUTIME, ION oder Capture-Telegramm
|DCF77 emulation||DCF77-emulation, TTL-level|
Four TTL outputs can configured independently for the following modes:
- free programmable cyclic or fixed impulses
- timer mode; three 'ON'- and three 'OFF'-states can be setup per day
The switch states can be inverted for all three outputs, the impulse lengths are configurable in 10msec steps in a range from 10msec to 10sec.
The impulse output can be configured for all channels together to 'always' or 'ifsync'.
|Generated time codes||
IRIG B002: 100pps, DCLS signal, no carrier, BCD time of year
IRIG B122: 100pps, AM sine wave signal, 1 kHz carrier, BCD time of year
IRIG B003: 100pps, DCLS signal, no carrier, BCD time of year, SBS time of day
IRIG B123: 100pps, AM sine wave signal, 1kHz carrier, BCD time of year, SBS time of day
IRIG B006: 100 pps, DCLS Signal, no carrier, BCD time-of-year, Year
IRIG B126: 100 pps, AM sine wave signal, 1 kHz carrier frequency, BCD time-of-year, Year
IRIG B007: 100 pps, DCLS Signal, no carrier, BCD time-of-year, Year, SBS time-of-day
IRIG B127: 100 pps, AM sine wave signal, 1 kHz carrier frequency, BCD time-of-year, Year, SBS time-of-day
IEEE1344: Code according to IEEE1344-1995, 100pps, AM sine wave signal, 1kHz carrier, BCD time of year, SBS time of day, IEEE1344 expansion for date, time zone, daylight saving and leap second in Control Funktions Segment
C37.118: Like IEEE1344 - with turned sign bit for UTC-Offset
AFNOR: Code according to NFS-87500, 100pps, AM sine wave signal, 1kHz carrier, BCD time of year, complete date, SBS time of day
|Time-Trigger inputs||Resolution: 100 nsec, triggered by falling TTL slope
Time of trigger event readable via RS232-interface
|Alarm output||Synchronous state of the module, TTL high level if synchronous|
|Dimensions of the front panel||21HP/3U (106mm x 128mm), with integrated membrane keyboard|
|Electrical connectors||96-pin VG-rail DIN 41612|
|Power supply||+5V DC|
|Backup battery type||
CR2032 - button cell lithium battery
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|
|Current consumption||+5V 1.1 A to 1.4 A (depending on oscillator type)
|Ambient temperature||0 ... 50°C / 32 ... 122°F|
|RoHS-Status of the product||This product is fully RoHS compliant|
|WEEE status of the product||This product is handled as a B2B category product. In order to secure a WEEE compliant waste disposal it has to be returned to the manufacturer. Any transportation expenses for returning this product (at its end of life) have to be incurred by the end user, whereas Meinberg will bear the costs for the waste disposal itself.|
Short Info Sheet
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