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面议The TCR180PEX-EL receives IRIG-A/B/G, IEEE 1344, IEEE C37.118 or AFNOR NF S87-500 time codes ａnd can be used for synchronizing the system time of its host PC.
The board TCR180PEX-EL has been designed to receive IRIG-A/B/G, IEEE 1344, IEEE C37.118 or AFNOR NF S87-500 time codes.
It is used in applications like data acquisition, standalone computer time synchronization (for systems without a network connection or higher accuracy requirements).
Receiver: the module provides two input channels for decoding of modulated and unmodulated time codes in IRIG-A/B/G, IEEE 1344, IEEE C37.118 or AFNOR format. The receiver's automatic gain control (AGC) allows the reception of modulated timecode signals within an amplitude range from 600 mVpp to 8 Vpp. In addition, the TCR180PEX-EL provides an optocoupler input for decoding unmodulated codes with TTL- or RS-422 level for example. The board can be delivered with an optical input for unmodulated codes optionally.
The decoded date and time can be read via the PCI Express interface and is also transmitted via the board's RS-232 port. A buffered real time clock keeps time and date after power down.
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.
If you are going to use the TCR180PEX-EL in your own applications, please download our software development kit which contains libraries and sample code and shows how to access the card from within your software.
All drivers and API sample source code can be downloaded free of charges from our website ａnd we are happy to assist you if you face any difficulties in using the Meinberg driver API in your software development process.
| Status info | Status info by 4 LED light indicators (2mm light pipes)
|
| Input signal | Modulated IRIG A/B/G, IEEE1344, IEEE C37.118 or AFNOR NF S87-500 signal, input insulated by transformer, input impedance 50 ohm, 600 ohm or 5 kohm selectable by jumper. Unmodulated (DC level shift) IRIG A/B/G, IEEE1344, IEEE C37.118 or AFNOR NF S87-500 signal, input insulated by photocoupler. |
| Accuracy free run | ±1·E-6 if the decoder was synchronous for at least 1 h |
| IRIG Time Code Input | IRIG - A002/A132, A003/A133, A006/A136, A007/A137, B002/B122, B003/B123, B006/B126, B007/B127, G002/G142, G006/G146, IEEE 1344, AFNOR NFS 87-500 and IEEE C37.118 (other codes on request) |
| Frequency outputs | 10MHz TTL |
| Pulse outputs | Fix pulse output PPS (TTL or RS232) and PPM (TTL) on D-Sub connector. |
| Precision of timebase | ±750 nsec compared to IRIG reference marker Required accuracy of time code source: ±100ppm |
| Interface | Two independant serial RS232 interfaces |
| Data format PC interface | Binary, byte serial |
| Data format of interfaces | Baud rate: 300 Bd...115200 Bd Data format: 7E2, 8N1, 8N2, 8E1, 7N2, 7E1, 801 Time telegram: Meinberg Standard-Telegram , SAT, Uni Erlangen (NTP), SPA, RACAL, COMPUTIME, ION or Capture-Telegramm |
| Statusbyte | Information about holdover mode, synchronization since last reset and the validity of the RTC data. |
| Time-Trigger inputs | Triggered by falling TTL slope Time of trigger event readable via computer slot or optional second RS232-interface |
| Electrical connectors | Female BNC-connector for input signal male 9-pole D-Sub connector |
| Computer interface | Single lane (x1) PCI Express (PCIe) Interface PCI Express r1.0a compatible |
| Backup battery type | When main power supply fails, hardware clock runs free on quartz basis, life time of lithium battery min. 10 years |
| Board type | Low Profile card (68,90 x 150 mm) |
| Ambient temperature | 0 ... 50°C / 32 ... 122°F |
| Humidity | Max. 85% |
| Warranty | Three-Year Warranty |
| 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. |
