User`s manual

NexSens Technology, Inc.
iSIC User‟s Manual 70
Note: During some situations it may be necessary to prevent iChart from automatically
interrogating devices in the iChart database. Interrogation can be paused by selecting the
Pause Auto-Interrogation command from the Project menu. Resume automatic data
retrieval by selecting the Unpause Auto-Interrogation command.
3.5.2 Sync iSIC Real Time Clock to PC Schedule
The Sync RTC Schedule is the interval iChart will automatically sync the iSIC clock with the PC
clock. As with any embedded device, the iSIC clock can drift as much as two minutes per month.
Especially where power scheduling is implemented, making sure the iSIC time and the PC time
are the same is important. Set a Sync RTC Schedule by clicking the Schedule button on the
main instrument control screen.
Note: When using a Sync RTC Schedule in conjunction with power management, make sure the
data logger telemetry will be powered when the auto sync is scheduled to occur. For example, if
a 3100-iSIC is scheduled to only power on the cellular modem 5 minutes every hour, set the
Sync RTC Schedule to 2 or 3 minutes after the top of an hour to make sure the 3100-iSIC has
had time to power on and connect to the cellular network.