Ieee1588 - Omron STC-MBS881POE Product Specifications And User's Manual

IEEE1588

10.21
Precision Time Protocol (PTP) is implemented on camera, is synchronized to "Master Clock" in same network
automatically.
The camera supports IEEE 1588-2008 of PTP Version 2. The accuracy of time (Timestamp) synchronized is
different based on network system configuration.
1) BMC (Best Master Clock) function
BMC function is implemented on camera. The most accurate clock in same network is defined as "Master
Clock" then time (Timestamp) synchronizes. If there are more than two devices has most accurate clock in
same network, clock of smallest MAC address device is defined as "Master Clock".
2) E2E (End-to-End) Transparent Clock
The camera supports E2E method. Time difference is correcting by blow algorithm
Timestamp
Timestamp
The master device and slave device exchange message included Timestamp.
Defined delay between master device and slave device by comparing these messages.
If time difference between master device and slave device is occurred, adjust internal clock of slave device
to synchronize to master device.
Synchronize clock regularly to correcting time drift.
STC-MBS881POE / STC-MCS881POE
Product Specifications and User's Guide
Master Switching HUB
Sync message
Flow up message
Delay request
message
Delay request
reply message
Slave
Timestamp
Timestamp
No.19S208-00
Time
57/73