Optiview DVRTT PRO Series Operation Manual page 20

Chapter II
9) Ground (Field GND) Connection
It connects bolt with wire to the Ground to protect DVR and user‟s safety from surge,
static electricity and noise
10) Factory Reset Switch and NTSC/PAL Shift Switch
Factory Reset Switch
The factory reset switch located at the left side of NTSC/PAL switch is used to return to factory
default setup values.
When you need to shift NTSC/PAL mode, turn off the DVR before shift switch, then restart the DVR.
11) Power Connection
Power Supply is Micro ATX 115/230VAC , 60/50Hz , 6/3A
115/230VAC is changeable with shift switch.
Main power can be turned on/off by switch.
NTSC/PAL Shift Switch
<Power cord connector, AC 115V/230 switch, Power switch>
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