Steering With A Frequency Reference - Microsemi SyncServer S200 User Manual

Web Interface
NOTE 4: When a timing source or user sets the Hardware Clock time, the SyncServer syn-
chronizes its Software Clock (a.k.a, the "ntpd" or "NTP daemon") and its battery-backed
Real Time Clock (RTC) to the new time. The SyncServer also RESTARTS the NTP dae-
mon after any clock change.
Setting the Time Manually
When Forced Timing Source is set to Auto or Free Run, the user can set the time manually
from the web interface or the command line interface. An adjust time command is also avail-
able from the command line interface.
NOTE 5: IMPORTANT: If the user is preparing to switch from Free Run to Auto and the time
is more than 1000 seconds off UTC time, manually set it within 1000 seconds of UTC time
before switching to Auto.
Using the Web Interface: Enter the UTC Time on the TIMING - HW Cloc
APPLY button. The SyncServer applies the UTC Time at the next internal PPS rising edge
after receiving the web page.
Using the Command Line: Open a command line session to the Console RS-232 port or the
<LAN*> network port and log in as "admin" followed by the password. Enter the
SETTIMEOFYEAR command followed by the time in one of the following formats:
x.y
mm/dd/yyyy hh:mm:ss.x
yyyy ddd hh:mm:ss.x
MON dd yyyy hh:mm:ss.x
hh:mm:ss.x
In "x.y" format:
x = UTC seconds
n
y = fractions of a second
n
In the remaining formats:
mm = month 01 through 12
n
dd = day 01 through 31
n
ddd = day of year 001 through 366
n
yyyy = four-digit year
n
MON = first three letters of the month (e.g., "JAN")
n
hh = hours 00 through 23
n
mm = minutes 00 through 59
n
ss = seconds 00 through 59
n
x = fractions of a second
n

Steering with a Frequency Reference

To steer the clock using a frequency reference (1PPS, 10MHz), that frequency reference
must first be "qualified" by a valid timing source (see note below). To do this, connect the Syn-
cServer to a valid timing source (GPS, IRIG-B, NTP Peer) then wait for the Sync Server to
lock to it. Once the SyncServer hardware clock locks to a valid timing source, all connected
frequency reference(s) will become "qualified" for Time-of-Day (TOD).
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