
BASIC VIU OPERATION
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3-2
SIG-00-07-11 SEPTEMBER 2012 (REVISED OCTOBER 2019)
Version No.: B.2
3.1.1 VIU Real-Time Clock
The real-time clock will contain invalid data when the VIU is powered up for the first time in the
field. Therefore, date/time adjustments should be performed immediately following the initial
power-up sequence in the field. For units equipped with a GPS receiver, the GPS will provide
the time reference and no adjustment is needed. If the VIU is not equipped with GPS, such as in
the office monitoring application, the time and date are set via the web browser interface (See
section 7).
The internal power storage supplies power to the real-time clock when power to the unit is off.
Under normal circumstances, the real time clock will retain valid date/time information for at
least 10 years with external power removed. The real time clock uses a backup battery that is
not field replaceable.
3.1.2 Front Panel Boot Display Sequence
It is possible to monitor the VIU power-up process on the front panel display. The following
examples show the normal boot sequence as it appears on the front panel display.
Multiple status screens briefly appear as the unit starts all of its processes. During this period
the only LED that is lit is the Power LED. After all of the processes have run, the following
message appears on the screen:
All front panel LEDs are lit at this point to allow visual LED check. The following message
appears:
When the boot process is complete, a variation of the following message appears
V F D D r i v e r R e v 1 . 0
A p r 2 3 2 0 0 8 1 7 : 2 5 : 3 3
SAFETRAN SYSTEMS VIU
RUNNING VIU EXEC
SAFETRAN SYSTEMS CORP
PLEASE WAIT...
LOCALUI_MENU
Apr 8 2008 17:25:32