Lantronix SISPM1040-xxxx-L3 Web User Guide
33856 Rev. A https://www.lantronix.com/ 327
Filter Parameters: The default delay filter is a low pass filter, with a time constant of
2**DelayFilter*DelayRequestRate.
If the DelayFilter parameter is set to 0 or the Dist parameter is 0, the delay filter uses the same algorithm as the
offset filter.
The default offset filter uses a minimum offset or a mean filter method (i.e., the minimum measured offset during
Period samples is used in the calculation).
The distance between two calculations is Dist periods.
Note: In configurations with Timestamp enabled PHYs, the period is automatically increased, if (period*dist <
SyncPackets pr sec/4) i.e., max 4 adjustments are made pr sec.
If Dist is 0 the offset is low pass filtered, the filter BW is 0.1 Hz, the filter automatically adapts to the packet rate,
If Dist is 1 the offset is averaged over the Period.
If Dist is >1 the offset is calculated using 'min' offset.
DelayFilter: See above.
Period: See above.
dist: See above.
Unicast Slave Configuration: When operating in IPv4 Unicast mode, the Slave is configured up to 5 master IP
addresses. The Slave then requests Announce messages from all the configured masters. The Slave uses the
BMC algorithm to select one as master clock, the Slave then requests Sync messages from the selected Master.
Duration: The number of seconds a Master is requested to send Announce/Sync messages. The request is
repeated from the Slave each Duration/4 seconds.
ip_address: IPv4 Address of the Master clock.
grant: The granted repetition period for the sync message.
CommState: The state of the communication with the master; possible values are:
IDLE : The entry is not in use.
INIT : Announce is sent to the master (Waiting for a response).
CONN : The master has responded.
SELL : The assigned master is selected as current master.
SYNC : The master is sending Sync messages.
Buttons
Apply : Click to save changes.
Reset : Click to undo any changes made locally and revert to previously saved values.
Messages:
Maximum of 4 clock instances can be created.
Cannot create more than one new clock with a given instance number
Clock Instance must be an integer value between 0 and 3
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