MEINBERG PCI/PCIX Computer Clocks will synchronize the system time of PCI/PCI-X computers and provide an Application Programming Interface (API) to read accurate and precise time from within your own application. 

Key Features

-PCI LOCAL BUS interface, 3.3V or 5V, 33MHz or 66MHz, PCI-X compatible

-Plug and play

-RS232 interface

-Buffered hardware clock

-Configurable time zone

-Driver software for all popular operating systems

Overview: PCI / PCIX Clocks

GPS170PCI
GPS Clock for Computers (PCI/PCI-X Bus)

The Meinberg GPS170PCI slot card is the professional solution to your standalone computer synchronization requirements. Its various outputs like IRIG, serial time string or 1PPS can be used to provide synchronization to other devices. A powerful but easy to use API enables you to integrate a highly accurate time base in your own software and the two independent capture inputs add hardware timestamping of external events to your measurement application.

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.

TCR167PCI
IRIG Time Code Receiver and Generator for Computers (PCI/PCI-X bus)

The TCR167PCI receives

IRIG-A/B or AFNOR time codes

and can be used for synchronizing the system time of its host PC. The IRIG output of this card can generate an IRIG signal for other IRIG time code readers. The output format is independent from the incoming IRIG signal - a perfect solution to your IRIG conversion requirements.

More than: https://www.meinbergglobal.com/english/products/pci-pcix-clocks.htm