Orolia SecureSync 2400 User Manual

clock.
Stratum0 means a device is directly connected to e.g., a GPS antenna. Stratum0
devices cannot distribute time over a network directly, though, hence they must be linked
to a Stratum1 time server that will distribute time to Stratum2 servers or clients, and so
on. The higher the Stratum number, the more the timing accuracy and stability degrades.
The NTP protocol does not allow clients to accept time from a Stratum 15 device, hence
Stratum 15 is the lowest NTP Stratum.
A group of NTP servers at the same Stratum level (Stratum 2, for example) are con-
sidered NTP Peers to each other. NTP Servers at a higher Stratum level, on the other
hand, are referred to as NTP Servers.
Note: Internet Time Servers should be configured as NTP Servers and not
as NTP Peers.
If SecureSync has no valid Timing System Reference, NTP Server or NTP Peers, the NTP
Stratum value is automatically downgraded to Stratum 15. This ensures that its NTP cli-
ents will no longer use this SecureSync unit as a time reference.
2.15.7.2 Configuring "NTP Stratum 1" Operation
When the Timing System references of your SecureSync are normally available (rather
than being unavailable most of the time e.g., in areas with poor GNSS reception), it is advis-
able to use the System Time as a reference to NTP, since this provides NTP with the most
accurate references. This mode is called Stratum 1 operation, since SecureSync operates
as a Stratum1 NTP server.
To configure Stratum 1 operation for SecureSync:
1.
Navigate to MANAGEMENT > NETWORK: NTP Setup:
2.
Click the GEAR icon in the NTP Services panel.
3.
The Edit NTP Services window will display. Click the Stratum 1 tab.
4. Check all of the three options:
Enable Stratum 1 Operation
Checking this option will cause the NTP Service to use the System Time
provided by the Timing System input.
Prefer Stratum1
This option configures NTP to “weigh” the Timing System input heavier than
input from other NTP servers for its selection (The Timing System inputs are
normally more accurate than other NTP servers).
2.15 Configure NTP
CHAPTER 2 • SecureSync 2400 User Manual Rev. 2
103

Orolia SecureSync 2400 Specifications

General

Brand	Orolia
Model	SecureSync 2400
Category	Recording Equipment
Language	English