Key Features
- PCI Express Interface
- IEEE 1588-2008 (PTP V2) compatible
ordinary clock
- Pulse per second and 10 MHz
output
- Memory Mapped I/O time reads for high
access rates
- RS232 interface
- IRIG-B/AFNOR time code
generator
- Plug and Play
- Driver software for all popular
operating systems
Description
This PTP PCI Express slot card is the best choice
for adding a highly accurate time base to your
servers or workstations over a simple Ethernet
connection. The time source for the card is a
IEEE1588 grandmaster clock like the LANTIME
M600/GPS/PTP. In the past, sub-microsecond
accuracy in PCs could be achieved with GPS
synchronized devices only but now with PTP there is
no need for complex antenna cabling to every PC.
The integrated single board computer (SBC) is
running the PTP stack and provides a PCI Express
interface that is compatible with other Meinberg PCIe
devices. In this way the board PTP270PEX can be
operated by using the standard Meinberg driver
package and there is no need to run a PTP software on
the computer. The card can be used as a stratum 0
reference time source for NTP and transforms any
machine into a Stratum 1 NTP server without consuming
additional physical space in your server room.
Being the first PCI Express PTP V2 compatible
timing device on the market, the PTP270PEX comes with
a truckload of features to enable software developers
to overcome the timing limitations of COTS operating
systems like Linux or Windows. The powerful and
highly functional Meinberg API (Application
Programming Interface) delivers an easy to use and
portable way of accessing all Meinberg bus level
timing devices. The Meinberg SDK can be downloaded
free-of-charge.
Legacy interfaces like IRIG DCLS, 1PPS or 10 MHz
can be used to connect other equipment to the PCIe
slotcard and transfer the time base over dedicated
cable connections to systems which cannot be
synchronized via NTP or other network protocols.
The memory mapped access feature offers a fast,
simple and efficient way of reading the board time
with high precision at very high rates.
The device is designed to be a timing device only
and cannot be used as a standard network interface
card.
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.
Characteristics
|
Accuracy: |
+-20 ns to grandmaster
clock |
| Status
info: |
4 Status LEDs:
- System Status
- Outputs active
- PTP packet sent
- PTP packet received
|
| Frequency
outputs: |
Frequency output 10 MHz,
TTL level |
| Pulse
outputs: |
Pulse Per Second (PPS), TTL
level, pulse width: 200ms |
| Accuracy of pulse
outputs: |
+/- 20 ns (relative to the
used IEEE 1588 Grandmaster Clock, after initial
synchronization phase) |
|
Interface: |
Single serial RS232
interface |
| Unmodulated time
code output: |
DCLS, TTL into 50 ohm
(active high or active low) |
| Generated time
codes: |
- B002: 100pps, DCLS signal, no carrier,
BCD time of year
- B003: 100pps, DCLS signal, no carrier,
BCD time of year, SBS time of day
- IEEE1344: Code according to
IEEE1344-1995, 100pps, BCD time of year, SBS
time of day, IEEE1344 expansion for date,
time zone, daylight saving and leap second in
Control Functions segment (CF)
- AFNOR: Code according to NFS-87500,
100pps, BCD time of year, complete date, SBS
time of day
|
| Time-Trigger
inputs: |
Resolution: 20 nsec,
triggered by falling TTL slope
Time of trigger event readable via PCI Express
interface |
| Computer
interface: |
Single lane (x1) PCI
Express (PCIe) Interface
PCI Express r1.0a compatible |
| Network
Interface: |
1 x 10/100 MBit with RJ45,
IEEE 1588 |
| Power
supply: |
+3.3V, @ 600mA
+12V, @ 300mA |
| Board
type: |
Standard height board (101
x 150 mm) |
| Precision Time
Protocol (IEEE 1588): |
PTP/ IEEE 1588-2008 Multicast including
- Network Protocols:
- UDP/IPv4 (Layer 3)
- IEEE 802.3 (Layer 2)
- Delay Mechanisms:
- End-to-End
- Peer-to-Peer
- PTP Management Messages for monitoring
and configuration
|
| Ambient
temperature: |
0 ... 50°C / 32 ...
122°F |
|
Humidity: |
Max. 85% |
|
Options: |
- Oscillator upgrade OCXO-LQ, -MQ or -HQ
(instead of TCXO) for extended Holdover
capabilities
(see oscillator
table for further details)
|
| 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. |
|
