# PTP clock information

## 1. Summary

This page is for checking the PTP clock information.

You can check the information only when the PTP function is enabled.

## 2. Top page

This is the top page for the PTP clock information.

### 2.1. Clock information of this unit

- Displays the clock information of this unit.

- Displays the following information when the PTP operation mode is transparent clock.

  - Clock Identity

    - The ID to identify the PTP clock.

  - Number Of Ports

    - The number of PTP ports.

  - Delay Mechanism

    - The delay measurement mechanism used for PTP (example: End to End, Peer to Peer).

  - Primary Domain

    - The PTP domain number to which this clock belongs.

- Displays the following information when the PTP operation mode is boundary clock.

  - Two Step Flag

    - If the state is Yes, transmit time information of PTP message in two steps with Follow Up message.

  - Clock Identity

    - The ID to identify the PTP clock.

  - Number Of Ports

    - The number of PTP ports.

  - Clock Quality - Class

    - The value that indicates the clock quality class (Smaller value indicates a higher quality).

  - Clock Quality - Accuracy

    - The accuracy of the clock.

  - Clock Quality - Offset (log variance)

    - The indicator that indicates a variation of the clock time.

  - Priority1

    - The priority to be used when selecting as the grandmaster clock.

  - Priority2

    - The priority to be used when selecting as the grandmaster clock.

  - Domain Number

    - The PTP domain number.

  - TimeReceiver Only

    - If the state is Yes, operates only as the timeReceiver.

- This information is not displayed when the PTP function is disabled.

### 2.2. Current clock state

- Displays the current clock state of this unit.

- Displays the following information when the PTP operation mode is boundary clock.

  - Steps Removed

    - The number of PTP clocks passed through to the grandmaster.

  - Offset From timeTransmitter

    - The difference with the higher clock.

  - Mean Path Delay

    - The average communication delay between the higher clock.

- Pressing the button will refresh the displayed content.

- This information is not displayed when the PTP operation mode is transparent clock or the PTP function is disabled.

### 2.3. Master clock information synchronized with this unit

- Displays the master clock information synchronized with this unit.

- Displays the following information when the PTP operation mode is boundary clock.

  - Parent Port Identity - Clock Identity

    - The identifier of the parent clock.

  - Parent Port Identity - Port Number

    - The port number of the parent clock side.

  - Parent Stats

    - The statistics collection of the parent clock Enable/Disable.

  - Observed Parent Offset (log variance)

    - The indicator that indicates a variation of the time offset with the parent clock.

  - Observed Parent Clock Phase Change Rate

    - The phase change rate of the parent clock (Larger value indicates a more unstable).

  - Grandmaster - Clock Identity

    - The ID of the grandmaster clock.

  - Grandmaster - Clock Quality - Class

    - The value that indicates the grandmaster clock quality class (Smaller value indicates a higher quality).

  - Grandmaster - Clock Quality - Accuracy

    - The accuracy of the grandmaster clock.

  - Grandmaster - Clock Quality - Offset (log variance)

    - The indicator that indicates a variation of the grandmaster time.

  - Grandmaster - Priority1

    - The priority to be used when selecting the clock.

  - Grandmaster - Priority2

    - The priority to be used when selecting the clock.

- Pressing the button will refresh the displayed content.

- This information is not displayed when the PTP operation mode is transparent clock or the PTP function is disabled.

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