IMS-PZF: PZF (DCF77) Correlation Receiver (Eurocard)

This product is only compatible with Meinberg's line of modular IMS LANTIME systems.
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High accuracy DCF77 correlation receiver for generation of standard frequencies and pulses.
The IMS-PZF receiver is a long-wave radio clock module with receiver technology developed from the ground up specifically for time and frequency synchronization purposes. The IMS-PZF receiver provides a high-precision, high-accuracy time and frequency reference for your Meinberg IMS system and is designed to receive signals from the DCF77 timing service situated in Mainflingen, near Frankfurt am Main in Germany. This service provides reception as far afield as Central Scandinavia and Northern Africa, although for consistent and reliable reception, the best results for commercial applications that rely on continuous synchronization are achieved with reception in Western Europe.

Key Features Product Description Characteristics Downloads More Images

Key Features

High accuracy DCF77 correlation receiver for generation of standard frequencies and pulses
Oscillator Options: OCXO-SQ, OCXO-HQ, OCXO-DHQ
Pulses per second and per minute
RS-232 interface

Product Description

Functionality
The IMS-PZF receiver reads the current date and time from the DCF77 long-wave radio signal broadcast on 77.5 kHz. Once the PZF receiver is successfully synchronized with the long-wave reference signal, it generates a PPS (pulse-per-second) phase reference and a 10 MHz frequency reference. These PPS and 10 MHz references are then forwarded to the installed IMS modules to be either directly output or to serve as the basis for the generation of other output signals as required for a variety of applications. In addition, the IMS-PZF clock generates pulses per second (PPS), per minute (PPM) and IRIG time code signals.

By evaluating the pseudo-random sequence (PZF), which is part of the DCF77 signal in addition to the amplitude modulation, the PZF clock is capable to reproduce a time pattern in the range of microseconds. This allows generation of high precision pulses and an accurate adjustment of the main oscillator of the receiver.

Characteristics

Receiver	Quadrature receiver for optimized evaluation of the DCF signals (amplitude and phase modulation) Accuracy of pulse outputs: Time delay between two systems with max. distance of 50 km: typ. 20 µsec, max 50 µsec Time shift of successive pulses: max 1.5 µsec
Status Indicators	Status info by 4 LED light indicators (2mm light pipes) Init - blue: while the receiver passes through the initialization phase Field - green: minimum field strength needed for the correlation receiption is detected Ant Fail - red: antenna faulty or not connected Fail - red: time is not synchronized
Type of Antenna	DCF77 outdoor antenna AW02
Synchronization Time	2–3 minutes, given good DCF77 reception
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
Pulse Outputs	Pulse per second (PPS) and pulse per minute (PPM). TTL level, pulse width: 200 msec
Accuracy of Pulse Outputs	Better than +/- 50 μsec after synchronization and 20 minutes of operation.
Interface	Single serial RS-232 interface
Serial Time String Output	COM 0: Baudrate: 300, 600, 1200, 2400, 4800, 9600, 19200 Baud Data Format: 7N2, 7E1, 7E2, 7O1, 7O2, 8E1, 8N1, 8N2, 8O1 Time telegram: Meinberg Standard Time String , SAT, Uni Erlangen (NTP), COMPUTIME, SPA, RACAL, ION or Capture String
Switch outputs	Four TTL outputs can configured independently for the following modes: - free programmable cyclic or fixed impulses - timecode - 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. The impulse output can be configured for all channels together to 'always' or 'ifsync'.
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
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
Cable Type	Coaxial cable RG58 indoor or outdoor usage (BNC-, N-Norm-connector)
Operating Voltage	+5 V DC
Current Draw	+5 V 1,1 A to 1,4 A (depends on oscillator option)
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
Warranty	Three-year warranty
Options	Synthesizer 1/8 Hz up to 10 MHz (TTL level, sine wave 1.5Veff, open drain) 4 programmable TTL outputs and timecode generator (IRIG-B, AFNOR)
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.