Meinberg TCR51USB Manuel d'utilisateur

TCR51USBTechnical InformationOperating Instruction

10USB InterfaceThe TCR51USB contains a USB interface which is used for the communication andparameterization of the device with the Monitorprogramm.Co

11BufferingIf the power supply fails, an onboard realtime clock automatic switching to crystal timebase. In this case the power requirement of this cl

12Input impedanceThe IRIG-specification doesn’t define values for the output impedance of generators orthe input impedance of receivers. This fact led

13Firmware UpdatesWhenever the on-board software must be upgraded or modified, the new firmware canbe downloaded to the internal flash memory via the

ACCURACY OF TIME BASE: +/-5 µsec compared to IRIG reference markerREQUIRED ACCURACY OFTIME CODE SOURCE: +/- 100ppmHOLDOVER MODE: automatic switching t

TCR51USB - E- 12. 07. 11

Contact InformationMeinberg Funkuhren GmbH & Co. KGLange Wand 9D-31812 Bad PyrmontTelefon: ++49 (0) 52 81 / 9309-0Telefax: ++49 (0) 52 81 / 9309-3

Table of ContentsContact Information ... 2Content of the USB stick ...

4Content of the USB stickThe USB stick contains a driver program that keeps the computer´s system timesynchronous to the board time. If the present de

5IntroductionThe transmission of coded timing signals began to take on widespread importance inthe early 1950´s. Especially the US missile and space p

6IRIG-Standard format

7AFNOR-Standard format

8Features TCR51USBThe TCR51USB was developed for computer systems with USB connection.TCR51USB serves to receive and decode modulated (AM) and unmodul

9Functional descriptionAfter the received IRIG code has passed a consistency check, the software clock andthe battery backed realtime clock of TCR51US