Description
The WWVB51USB shows the reception quality via its status LED and uses a buffered real time clock to maintain the
time while powered off. There is no power supply required, the radio clock is powered by the Universal Serial Bus.
This USB clock offers a professional solution for your time synchronization requirements in mobile applications like field
data acquisition with a laptop/notebook. It can be deployed whenever you need to synchronize a standalone PC, laptop
or server with the WWVB time signal broadcasted by the U.S. National Institute for Standards and Technology (NIST).
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.
The Meinberg Single-Driver-Concept simplifies driver installation dramatically - there is only one driver who supports all
Meinberg PCI and USB devices and if you use our API to access your Meinberg timing device from within your own
applications, you can use the same source code for both PCI and USB devices.
Characteristics
Type of receiver
Integrated WWVB long wave radio receiver 60kHz ([3]
WWVB website
)
Accuracy
< +/-5 ms to UTC
Synchronization time
2-3 minutes after signal reception has been established
Physical dimensions
73mm x 117mm x 24mm (L x W x H)
Antenna connector
SMB-Subminiature-coaxial-connector
Current consumption
40mA
Ambient temperature
0 ... 50°C / 32 ... 122°F
Humidity
Max. 85%
Scope of supply
Radio Clock, 3 m USB 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.
rev 2013.0704.1631
wwvb51usb
Page 2/3
