All MIBs › TEMPUSLXUNISON-MIB › gpsTimeFigureOfMerit
gpsTimeFigureOfMerit
Module: TEMPUSLXUNISON-MIB
OID (symbolic): TEMPUSLXUNISON-MIB::gpsTimeFigureOfMerit
OID (numeric): 1.3.6.1.4.1.13827.6.1.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: 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 the TFOM is 4 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 9, the NTP server will cease to send stratum 1 reply packets and an Alarm LED will be energized.
What is gpsTimeFigureOfMerit?
The GPS sub-system's own Time Figure of Merit on the 3-9 logarithmic scale; normal locked operation typically reads around 3-4, implying a worst-case error near 100 nanoseconds, while 9 sustained for an hour means the server drops out of stratum 1.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.13827.6.1.2 snmpwalk -v2c -c public <target> TEMPUSLXUNISON-MIB::gpsTimeFigureOfMerit
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.13827.6.1.2.1 snmpget -v2c -c public <target> TEMPUSLXUNISON-MIB::gpsTimeFigureOfMerit.1
Start monitoring EndRun Technologies Tempus LX/Unison GPS-synchronized NTP time server appliance (sync status/oscillator health) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the TEMPUSLXUNISON-MIB::gpsTimeFigureOfMerit OID value, configure state conditions and alerts, and monitor any EndRun Technologies Tempus LX/Unison GPS-synchronized NTP time server appliance (sync status/oscillator health) from a single console.
OID Breakdown
Upper-level ancestors (7 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.13827 | endRunTechnologiesMIB | ENDRUNTECHNOLOGIES-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.13827.6 | tempuslxGntp | TEMPUSLXUNISON-MIB |
| 1.3.6.1.4.1.13827.6.1 | gps | TEMPUSLXUNISON-MIB |
| 1.3.6.1.4.1.13827.6.1.2 | gpsTimeFigureOfMerit | TEMPUSLXUNISON-MIB |