2. For all other references, uncheck the Enabled checkbox, so that they are all
disabled.
3. Configure the NTP Service as described under "Configuring "NTP Stratum
Synchronization"" on page117.
Note: When selecting NTP as an input reference, do not select
another reference (such as GNSS, IRIG, etc.) to work with NTP as a
reference. NTP should always be selected as both the Time and 1PPS
input when it is desired to use NTP as an input reference.
Example 4 – Time set manually by the User. Other references may or
may not be available
Note: In order for a manually set time to be considered valid and
used to synchronize VersaSync, a “User” needs to be created and
enabled in the Reference Priority table. "The "User/User" Reference"
on page177.
In this use case, the objective is to use a hand-set time, in combination with Ver-
saSync's oscillator as a 1PPS source as valid references.
Step-by-step procedure:
1. If necessary (see NOTE above), create a “User.”
2. Move the reference which has “User 0” in the Time column and “User 0” in
the 1PPS column to the top of the table, with a Priority value of 1. Click the
Enabled checkbox.
3. For all other references, uncheck the Enabled checkbox, so that they are all
disabled.
If the objective is to use a manually set time as a backup to other references
(such as GNSS or IRIG):
1. Move the "User/User" reference to a place in the table that has a priority
lower than the references the "User/User" reference will be backing up.
Make sure the Enabled checkbox is selected.
2. With “User/User” enabled, if no other higher priority references are enabled
or available (or if the higher priority references have since been lost), you
can now manually set the System time to the desired value
(MANAGEMENT > OTHER: Time Management > System Time > Manual
3.3 Managing References
CHAPTER 3 • VersaSync User Manual Rev. 12
181
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