100BASE-T1 SPY 12 Port
User Manual
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5.2.2
802.1AS in 100BASE-T1 SPY
The following image shows a possible setup for this purpose, using 3 100BASE-T1
SPY_12_Port devices.
Figure 5-4: Setup with 3 100BASE-T1_SPY_12_Port devices
In this setup, the configuration of the devices in the Spy Multiplexer settings label will
be as follows:
•
BRSPY 1: Grand Master
802.1AS Configuration
→
Master
•
BRSPY 2 and BRSPY 3: Slave
802.1AS Configuration
→
Slave
If the 100BaseT1 SPY device is configured as 802.1AS Master, the device will be the
Grand Master of the network, forwarding its internal clock to the device connected to
its Gigabit Port D, and using its internal clock as Timestamp. When the 100BaseT1 SPY
device is configured as 802.1AS Slave, the device will forward through its Gigabit Port
D the clock received from the Master device, and it will correct its internal clock to
synchronize with the Master device and use this clock as Timestamp.
•
BRSPY 1 will be Grand Master device, and it will send through its Gigabit Port
D its internal clock to the other devices using Sync and Follow Up messages.
This port will be connected to the Gigabit Port C from BRSPY 2, and in this
case, it will send also Response and Response Follow Up messages. BRSPY 1
will use its internal clock as Timestamp.
