Note:
Select Two Step operation if the Operating Mode is unknown.
4.
Delay Mechanism
By default the 'DELAY MECHANISM' will be set to E2E which will set the delay mechanism to end to end as
defined in IEEE 1588v2-2008.
5.
Configure Default Domain
Modify the 'DEFAULT DOMAIN' number if required, otherwise it is recommended that it is left as its default
value of '4'.
A domain consists of one or more PTP devices communicating with each other. By default, PTP aware
devices are configured with domain “4”. Changing the domain will cause only devices with the specified
domain to communicate using the PTP protocol. The input range is 4-23.
6.
Advertised Delay Request Interval
By default, the 'ADVERTISED DELAY REQUEST INTERVAL' is set to 1/16 second
7.
Announce Interval
By default, the 'ANNOUNCE INTERVAL' is set to 1/8 second.
8.
Announce Receipt Timeout
By default the 'ANNOUNCE RECEIPT TIMEOUT' is set to 3. This means that after 3 announce intervals, if
the device has not recieved an announce message it will trigger an announce receipt timeout event, which will
move the port into a listening state.
9.
Sync Interval
By default, the 'SYNC INTERVAL' is set to 1/16 second.
10.
BMCA
By default, the 'BMCA' operations will be set to 'G.8265' and will operate as defined in ITU-T G 8265.1.
11.
Configure Server Networking Option
Select the 'SERVER NETWORKING OPTION' from either T1 or E1. The clock class rules will change to reflect
the selected option.
12.
Clock Class Rules
By default, the 'CLOCK CLASS RULES' operations will be set to 'G.8265' and will appear as either 'G.8265
(Option I)' if a 'SERVER NETWORKING OPTION' of 'T1' is selected or 'G.8265 (Option II)' if 'E1' is seleted and
will operate as defined in ITU-T G.8265.1.
13.
Configure the Server Force Quality (Optional)
If this option is configured, then the GridTime 3000 will report its accuracy as being equal to the specified
level, regardless of the quality of the sync sources or the actual accuracy of the GridTime 3000. The options
available will depend on the configured Server Networking Option, and are defined in clause 5.4.2 of [ITU-T
G.781]. If the GridTime 3000 should report its true accuracy, select the 'None' option.
14.
Save Settings
Click the 'SAVE' button to write the settings to the GridTime 3000.
Provisioning
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2022 Microchip Technology Inc.
and its subsidiaries
Manual
DS00004572A-page 142
