gntpTimeFigureOfMerit

The Time Figure of Merit (TFOM) value ranges from 3 to 9 and indicates the
current estimate of the worst case time error.  It is a logarithmic scale,
with each increment indicating a tenfold increase in the worst case time
error boundaries.
          
The scale is referenced to a worst case time error of 100 picoseconds,
equivalent to a TFOM of zero.  During normal locked operation with GPS the
TFOM is 3 and implies a worst case time error of 100 nanoseconds.
          
During periods of signal loss, the GPS sub-system will compute an
extrapolated worst case time error.  One hour after the worst case time error
has reached the value equivalent to a TFOM of TFOM Fault Level, the NTP server
will cease to send stratum 1 reply packets and an Alarm LED will be energized.

MIB

RTM3205-MIB

OID

.1.3.6.1.4.1.13827.15.1.11

Type

scalar

Access

readonly

Status

current

Parent

gntp