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Leap Indicator - This is a two-bit code warning of an impending leap second. The numbers
mean:
00 = no warning
01 = the last minute has 61 seconds
10 = the last minute has 59 seconds
11 = alarm condition (clock not synchronized)
Stratum - This is the stratum level of the S100.
Precision - This is an eight-bit signed integer indicating the precision of the local clock, in
seconds to the nearest power of two. The range is -6 to -18.
Root Distance, or root delay - This is a signed fixed-point number indicating the total round-
trip delay to the primary reference source at the root of the synchronization subnet, in
seconds. It can be expressed as either a positive or negative number.
Root Dispersion - A 32-bit unsigned fixed point number indicating the maximum error
relative to the primary reference source, in seconds (milliseconds).
Reference ID - A 4-byte code indicating the reference source. If the reference source is
stratum 0, this string will identify the type of source (GPS or dial-up, for example). If the
source is stratum 1 or higher, this 4-byte code will contain the IP address of the reference
source.
Reference Time - The local time at which the local clock was last set or corrected, in a 64-bit
time-stamp format.
System Flags - These are various flags that can be enabled or disabled using the
configuration commands.
Jitter - Distortion of a signal caused by some weakness in synchronization, here shown in
seconds (milliseconds).
Stability - This is the residual frequency error remaining after the system frequency
correction is applied. Used most often in maintenance, the value starts as high as 500 ppm
but settles into the .01 to 0.1 ppm range.
Broadcastdelay - This shows the default broadcast delay.
authdelay - This is the default authentication delay.NTP Advanced Configuration
Here you will find advanced configuration features of NTP. You probably won't need to access
these, but they are here if you need to edit the configuration.
62
SyncServer S100
S100 User Guide – Rev. D – June 2005
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