Time And Timekeeping; Time Overview; Internal Clock Temperature Compensation; Internal Clock Temperature Compensation Parameters - Siemens 9410 Series User Manual

9410 series

Time and timekeeping

Time overview

Internal clock temperature compensation

Internal clock temperature compensation parameters

Time synchronization overview

94
Your meter supports different time types and time synchronization methods to adjust
its internal clock.
Your meter's internal clock is used for keeping time, timestamping data and
determining intervals for time-based measurements. The meter's clock does not affect
externally logged data.
Your meter monitors the passage of time using the frequency of an internal oscillator or
the frequency of the line power being measured. You can view your meter's time and
date information using the display or through software. To improve your meter clock's
accuracy, you can use an external time reference, such as a Global Positioning
System (GPS) signal.
Your meter's battery maintains the internal clock when the meter is unpowered.
Your meter displays local time based on the meter's time sync source and settings for
timezone and daylight savings time. You can configure your meter's date and time
format.
Go to www.usa.siemens.com/pds and download the Time synchronization and
timekeeping technical note for more information about time formats and settings and
the ION Reference for a detailed description of the Clock module and its operation.
The time accuracy of the meter has been improved by compensating for clock drift if
the meter's operating temperature falls outside the optimum temperature range.
Your meter's internal clock is adjusted based on the internal clock temperature
compensation parameters.
Your meter's internal clock is adjusted based on the temperature profile of its
components.
-40 °C
-40 °F
Te mpe ra ture a djus tme nt
applied (< 0.015%, or
13 seconds over 24 hours)
The time synchronization source and the duration between time synchronization
messages determines the accuracy of the meter's clock.
The clock is adjusted by synchronizing the meter's time with another time source. Time
synchronization messages can be automatically generated and sent to your meter
from your energy management system software or other time source such as an
SNTP/NTP server or GPS receiver. You can also manually trigger a time
15 °C
59 °F
No temperature
adjustment applied
Time and timekeeping
35 °C
95 °F
Te mpe ra ture a djus tme nt
applied (< 0.015%, or
13 seconds over 24 hours)
7EN05-0336-03
85 °C
185 °F