PCI511: DCF77 PCI Computer Clock (PCI/PCI-X Bus)

The PCI511 is a DCF77 radio clock for synchronization of computers with a PCI or PCI-X slot. It receives the longwave radio time signal from the DCF77 sender located near Frankfurt/Main, Germany.

Key Features

Years of warranty: 2 RoHS compliant

Product Description

The PCI511 has been designed for the reception of the DCF77 signal, the transfer of the time information to a computer with PCI (PCI-X) bus interface and the translation of the received codes into a serial telegram.

Because the radio clock PCI511 is composed as an universal board for computers with PCI bus, operation within 3.3V and 5V systems is possible.

The drivers package for Windows contains a time adjustment service which runs in the background and adjusts the Windows system time continously and smoothly. A monitor program is also included which lets the user check the status of the device and the time adjustment service, and can be used to modify configurable parameters.

The driver package for Linux contains a kernel driver which allows the board to be used as a reference time source for the NTP daemon which is shipped with most Linux distributions. This also turns the computer into a NTP time server which can also provide accurate time to other NTP clients on the network. Some command line tools can be used to setup configurable parameters and monitor the status of the board.

Additional drivers packages are available for DOS, Novell NetWare, and OS/2. At the bottom of this page there's a link to the download area.

The device's serial port can be used to update the card's firmware. Additionally it can be connected to the serial port of a computer to use the card as reference time source under operating systems where a serial time string is supported, e.g. by NTP, but no kernel device driver is available.


Type of receiver Narrowband DCF77 quadrature receiver with automatic gain control, bandwidth: approx. 20Hz
Status info RF Signal: Indicated by LED, antenna alignment enhanced by utility program
Free running: Indicated by LED and utility program
without RF signal the clock runs on quartz basis with an accuracy of ±1·10-6 (after 24 hours of synchronous operation)
Modulation: Indicated by LED and utility program
Reception Control Multiple check of received time telegram
Plausibility control by using two complete time telegrams
Pulse outputs Pulses per second (RS232/TTL level) and per minute (TTL level), pulse duration: 100 msec, active high
Interface PCI LOCAL BUS (PCI), PCI-X compatible
Data format PC interface Binary, byte serial
Data format of interfaces Baudrate: 300, 600, 1200, 2400, 4800, 9600 baud
Framing: 7E2, 8N1, 8E1, 8N2
Output string: 32 ASCII characters with date, time and status information
Statusbyte Informations about free running mode, daylight savings time and DST pre-switch anouncement, synchronization since last reset, GMT/UTC time and validity of the hardware clock data
Electrical connectors 9 pin sub D male connector
BNC female connector
Computer interface 33MHz- or 66MHz-PCI BUS (PCI-X) 32 Bit/3.3V or 5V card slot
Backup battery type In case of supply voltage failure the on-board RTC keeps the time based on XTAL for more than 150 hours (buffer capacitor)
Optional: lithium backup battery (life time: 10 years)
Board type PCI card short
Ambient temperature 0 ... 50°C / 32 ... 122°F
Humidity Max. 85%
Scope of supply Scope of supply includes an active ferrite antenna AI01 and 5m of RG174 coaxial cable with BNC connectors.
Optional: AW02 with RG58 and patch cord, other length of cable
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


Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
  • For drivers, SDKs, tools and utilities, please check our Download area