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7 Recorder Setup Utilities
D03283R01.10 TESLA LITE User Manual 7-9
7.4 Time Display and Settings
The Time Control tab displays the recorder’s current time and provides con-
trols to describe the IRIG-B time signal input. In the absence of an IRIG-B in-
put there is a facility to set the time manually.
Figure 7.6: Recorder Setup Utilities - Time Control
When the time is changed manually or by the application of IRIG-B, any ex-
isting trend and continuous disturbance recording data will be compromised.
You should erase this data after performing the time change.
Displayed Time
Time is maintained in UTC format on the recorder (i.e. without a time zone off-
set or daylight savings time applied). If the clock feeding the IRIG-B time sig-
nal to the recorder is sending local time, the recorder converts it to UTC
internally.
The time displayed in the Time Control screen above is determined by the ad-
jacent time display settings. The recorder will automatically convert from its
internal UTC time as required. The Recorder Time Zone Setting determines
the offset between Local time and UTC. DST will automatically add 1 hour to
the offset if appropriate.
Event and
Record
Timestamps
Event timestamps in the recorder’s Event Log are also controlled by the above
time display settings. They will be displayed as UTC or local times as config-
ured here.
Record timestamps shown in Control Panel’s Records tab are handled a bit dif-
ferently. Record times are converted from UTC using the Windows Time and
Date settings of the PC running Control Panel. This enables records from mul-
tiple time zones to be normalized to a common time zone and format.