GEN170TGP: DCF77 Code Generator in desktop case 

GEN170TGP: DCF77 Code Generator in desktop case 

Modular Time- and Frequency Synchronization System for Industrial Applications in DIN Rail Chassis

The full-featured DIN railmount package has one power supply slot, a clock module slot, a CPU slot and two slots for additional input and output modules. Both, wide range AC and a 20-60 V DC power supply model are available.



Product Description

The time code generator GEN170 has been designed to generate all signals required to control or simulate a DCF77 compatible long wave transmitter or provide the reference time for an NTP server:

  • 77.5 kHz carrier frequency
  • Second marks to modulate the carrier’s amplitude
  • PRN sequence and PRN window to modulate the carrier’s phase
  • Pulse-per-Second (PPS) output

Additionally, an IRIG or AFNOR time code signal is generated, and a serial time string can be transmitted which includes the generated absolute date and time.

Internal date and time is always based on UTC (Universal Time, Coordinated; formerly GMT, Greenwich Mean Time). A configurable time offset can be applied to the UTC time base to compute a local standard time. Beginning and end of a period of daylight saving time can either be computed year by year based on a simple, configurable algorithm, or can be configured for the current year. GEN170 generates the proper changeover announcement flags as required by the DCF77 coding scheme.

Additionally, a date for insertion of a leap second can be configured. GEN170 automatically generates the coding sequences to announce the leap second as required for DCF77 and NTP, and also inserts the leap second correctly.

Additional information

Key Features

Key Features
Years of warranty: 3 RoHS compliant
AM and PM
Leap Second Capability
Daylight Saving Capability
TCXO Reference Frequency


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