ARM Electronics DVRHD - Manual (Page 9)

DVR User’s Manual
8
2. System Setup
The notices and introduction on system installation will be described
particularly in this chapter. Please follow the description to operate the unit.
In order to prevent the unit from data loss and system damage that caused by
a sudden power fluctuation, use of an Uninterruptible Power Supply (UPS) is
highly recommended
2.1 Position the Unit
First, note to position / mount the DVR in a proper place and be sure to power
off the unit before making any connections. The placed location should avoid
hindering or blocking the unit from airflow. Enough airflow is needed to
protect the unit from overheating. The maximum allowable temperature of
operating environment is 40°C.
The unit utilizes heat-conducting techniques to transfer internal heat to the
case, especially to the bottom side of the unit.
NOTE: Be sure the rubber feet are not removed, and always leave a
space for air ventilation on the unit’s bottom side.
2.2 Selecting Video Format
The DVR is designed to operate under either NTSC or
PAL video formats. The switch is on the rear panel.
2.3 Connecting Devices to the Unit
This section lists some important notices that should be read before making
any connection to the DVR.
Connecting Required Devices
Before powering up the unit, cameras and a main monitor should be
connected to the unit for basic operation. If needed, connect a call monitor for
displaying full screen video of all installed cameras in sequence.