Spectracom SecureSync User Manual

Reported TFOM Value Estimated Time Error (ETE)
14 1000 sec < ETE <= 10000 sec
15 ETE > 10000 sec
Example
TFOM is a value between 1 and 15. TFOM can never exceed the default MaxTFOM value of
15.
Typically the MaxTFOMrequires no adjustment, but in some instances it may be advisable to
decrease MaxTFOM so that TFOM can potentially exceed it: For example, by lowering the
MaxTFOM to “5” it is now possible for TFOM to be always higher than the MaxTFOM value:
Assuming the MaxTFOM is set to 5 and the TFOM happens to go to a 6, i.e. TFOM is now
exceeding MaxTFOM. This condition will cause a 1PPS out of specification alarm to be asserted
and the oscillator disciplining will change in order to speed-up the alignment of the system
1PPS to the selected reference (causing it to take less time getting closer into alignment with the
reference):
This will cause the TFOM to start to decrease faster. Once TFOM no longer exceeds MaxTFOM
because the System 1PPS is now much closer to the reference 1PPS, the disciplining slows back
down again as the system 1PPS continues to be brought into alignment with the selected 1PPS
input.
3.5.3 Monitoring the Oscillator
The Oscillator Management screen provides current and history status information on dis-
ciplining state and accuracy.
To access the Oscillator Management screen:
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CHAPTER 3 • SecureSync User Reference Guide Rev. 26
3.5 Managing the Oscillator

Spectracom SecureSync Specifications

General

Model	SecureSync
Time Reference	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Disciplines	GNSS, IRIG, PTP, NTP, SyncE
Inputs	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Outputs	NTP, PTP, 1PPS, IRIG
Protocols	PTP, NTP, SNMP, SSH, HTTPS
Form Factor	1U Rack-mount
Redundancy	Optional redundant power supply
Security Features	Password protection, access control lists, SSH, HTTPS, SNMPv3, NTP authentication, PTP authentication
Power Supply	100-240 VAC, 50-60 Hz
Operating Temperature	0°C to +50°C
Dimensions	44.45 mm (H) x 482.6 mm (W)