GNS183 - DAHS/DHS: GNSS Satellite Receiver with Integrated Timecode Generator (DIN Rail/TS35 Rail-Mounted)

Key Features

Programmable pulses and switching times,
Time code or serial time string configurable for optocoupler outputs
Two RS-232 interfaces, one RS-485 interface
DCF77 simulation
Modulated and unmodulated IRIG-B or AFNOR Outputs
Allows direct transmission routes of up to 70 m when using Speedfoam 240HFJ coaxial cable
Remote control and monitoring with included software Meinberg Device Manager (COM 0)
Aluminium profile case for 35mm DIN mounting rail
Flash-EPROM with bootstrap loader

Product Description

The GNS183/DAHS and GNS183/DHS are designed to be mounted on a DIN or TS35 rail. The front panel integrates eight LED indicators, a terminal block, two D-Sub connectors, and three BNC connectors. The receiver is connected to the GNMANTv2 antenna by up to 70 meters (230 feet) of 50 Ohm coaxial cable (when using low-loss Speedfoam 240HFJ cable). The GNMANTv2 multi-band antenna is powered via the antenna cable.

Pulse Outputs
The pulse generator of the GNS183/DAHS or GNS183/DHS provides three independent channels and is able to generate a multitude of different pulse signals. These are configured using the software Meinberg Device Manager. The pulse outputs are electrically isolated by optocouplers or PhotoMOS relays and are connected via the terminal block.

Asynchronous Serial Interfaces
One RS-485 serial interface and two RS-232 serial interfaces are available to the user. The corresponding parameters can be configured using Meinberg Device Manager and the signal is accessed via the serial port COM0.

Characteristics

Receiver Type	Combined GPS / Galileo / GLONASS / BeiDou receiver Number of channels: 72 Frequency band: L1 Standard Precision (GNSS)
Status Indicators	Fail-LED shows that the internal timing has not been synchronized or that a system error occurred Nav-LED shows that the calculation of the position has been achieved after reset
Type of Antenna	Included GNMANTv2 multi band antenna (Data Sheet)
Control Elements	Four LEDs to display the status of the programmable outputs and the time code output Four LEDs to display the status of the receiver (Init, Nav, Fail, Antenna)
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
Accuracy of Pulse Outputs	Better than ±100 nsec after synchronization and 20 minutes of operation better than ±3 µsec during the first 20 minutes of operation
Interface	Two independent serial RS-232 interfaces COM 0 and COM 1, COM 2 as RS-485 interface
Serial Time String Output	Baudrate: 300 to 19200 baud Framing: 7N2, 7E1, 7E2, 8N1, 8N2, 8E1, 801 Time strings: Meinberg Standard, Meinberg GPS, SAT, Uni Erlangen (NTP), NMEA0183, Computime, Sysplex-1, SPA, RACAL, ION, IRIG J
DCF77 emulation	Amplitude modulated 77.5 kHz sinewave carrier output level approximately -55 dBm (unmodulated)
Optocoupler outputs	3 optocoupler outputs; U_CEmax = 55V, I_Cmax = 50 mA, P_tot = 150 mW, V_iso = 5000 V the following operating modes are possible for each channel: - free programmable cyclic or fixed pulses - timer mode; three 'ON'- and three 'OFF'-times programmable per day and channel - receiver state; synchronous state of the GNS-receiver is indicated - DCF77-emulation - Time code (IRIG/AFNOR) - Time string (time telegram of COM1) The switching state of each channel can be inverted, the pulse duration is settable in steps of 10 msec from 10 msec to 10 sec. The outputs can be enabled either: - always (immediately after reset) - only if receiver is GNSS-synchronised
Supported Timecode Formats	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 Functions segment C37.118: Like IEEE1344 - with inverted 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
Electrical Connectors	16-pin terminal block for connecting the pulse/switch outputs and the power supply BNC female connectors for DCF77-simulation (AM-modulated 77.5 kHz carrier frequency) and modulated timecode output (3 V_pp into 50 ohm) female Sub-Min-D connectors for serial interfaces and unmodulated timecode outputs
Antenna Connector	SMA female connector
Power Consumption	ca. 5 W
Backup Battery Type	Upon loss of power supply to card, the hardware clock runs independently using the on-board quartz oscillator. Almanac data remains stored in battery-backed RAM Life time of lithium battery min. 10 years
Operating Voltage	GNS/DHS: 20 -60 V DC GNS/DAHS: 110-240 V DC / 100-240 V AC (50-60 Hz)
Firmware	Flash-EPROM, bootstrap loader
Physical Dimensions	GNS/DHS: 105 mm x 85 mm x 104 mm (h x w x d) for 35mm DIN mounting rail GNS/DAHS: 105 mm x 125,5 mm x 104 mm (h x w x d) for 35mm DIN mounting rail
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
Options	Photo-MOS-relay-outputs (instead of optocouplers): U_max = 250 V AC/DC peak, I_max = 150 mA, P_tot = 360 mW, V_iso = 1500 V AC
Deployment in special environments	Meinberg's GNSS receiver in railmount chassis are already deployed to numerous customers in the power industry. They are used for electrical substation synchronization all over the world, for example in South America, the USA, Asia and Europe. This product is therefore suitable to work under harsh conditions and still provide reliable and accurate synchronization.
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.