GE T1000, Техническое руководство

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Chapter 7
– Configuration
GE Reason Switches
REASON SWITCHES-TM-EN-3 217
13 PTP Settings
Precision Time Protocol is an Ethernet protocol that allows IED equipment being
synchronized to a master throughout the Ethernet connection medium. Thus,
synchronization is performed at the same automation network, and no separated
network is required as it is with IRIG-B signals, for instance.
PTP menu is located at Settings  PTP.

PTP External Clock Mode:
This menu allows configuring external clock parameters to be output by the switch.
Possible configurations are as follows.
T1000, S2020 and S2024G switches do not support external clock output. Thus, these configurations do not take effect.
o
One_PPS_Mode : enable PTP output at the 1 PPS (pulse-per-second)
output. Enable will allow the function to be operating and Disable
will disable the pulse-per-second output function;
o
External Enable : enable external clock output. Enable will allow the
function to be operating and Disable will disable the external
output function;
o
Adjust Method : indicates external clock adjustment method to be
applied. Possible values are as follows:
 LTC Frequency : enable external clock adjustment to be
done by Local Timer Counter frequency control;
 SyncE-DPLL : enable external clock adjustment to be done
by the SyncE DPLL frequency control;

Oscillator : enable external clock adjustment to be done
by an independent from SyncE oscillator, if the hardware
of the switch has support to;
 LTC phase : enable external clock adjustment to be done
by the Local Timer Counter phase control, assuming that
frequency is locked by SyncE;
o

PTP Clock configuration:
This menu allows configuring PTP clock parameters to be applied at the PTP network.
Reason Switches allows creating up to 4 clock instances at the same switch.