Network Meter Block Installation, Operation, & Maintenance Manual
Pre-Installation Considerations 7
2.2 Real-Time Clock Synchronization
Three Network Time Protocol (NTP) servers are configured to synchronize the NMB’s clock with
Coordinated Universal Time (UTC) the first time a connection is made between the servers and the NMB.
Users cannot manually set or change the clock, nor select a time zone; however, you can change the
servers to suit your location (see Section 4.3.7.2: Configuring NPT Server Settings).
A coin cell battery maintains the clock’s settings curing a power cycle. This battery may need to be
replaced over time; for instructions, see Section 5.1: Replacing the Clock Battery.
All timestamps by the NMB, such as those recorded in logs, are in UTC.