Preparing the site
1. Preparing & choosing a site for installation.
◦ To ensure normal system operation, plan your site configuration and prepare the site before
installation.
◦ Install the unit in a restricted access area.
◦ Choose a site with a dry, clean, well-ventilated and air-conditioned area.
◦ Choose a site that maintains an ambient temperature of 32 to 104oF (0 to 40oC).
2. Creating a safe environment.
◦ Connect AC-powered systems to grounded power outlets or as per local regulations.
◦ Do not move or ship equipment unless it is correctly packed in its original wrapping and shipping
containers.
◦ Only allow Harmonic trained personnel to undertake equipment service and maintenance. Do not
permit unqualified personnel to operate the unit.
◦ Wear ear protection when working near an NSG Pro platform for a longer period of time.
3. Rack mounting the unit.
◦ Install the system in an open rack whenever possible. If installation in an enclosed rack is
unavoidable, ensure that the rack has adequate ventilation.
◦ Reliable earthing of rack-mounted equipment should be maintained. Particular attention should be
given to supply connections other than direct connections to the branch circuit (e.g. use of power
strips). This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
◦ When mounting this unit in the partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
◦ If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing
the unit in the rack.
◦ The rack must be anchored to an immovable support to prevent it from tipping when the unit is
mounted on it. The rack must be installed according to the rack manufacturer’s instructions.
◦ Disconnect all power and external cables before lifting the unit. Depending on the weight of the
unit, more than one person might be required to lift it.
4. Power considerations
Option
Description
AC power
◦ Adding to the system a UPS (Uninterrupted Power Supply) and an AVR
(Automated Voltage Regulator) is highly recommended.
◦ Installing the main power supply by a qualified electrician, according to
power authority regulations. Make sure all powering are wired with an
earth leakage, according to local regulations.
◦ It is recommended to install the encoder within 1.5m (approximately 5
feet) from an easily accessible grounded AC outlet.
◦ When the encoder is rack-mounted, ensure that the rack is correctly
grounded.
DC power
◦ Ensure a suitable over-current device is in-line between the equipment
and the power source.
◦ Connect DC-input power supplies only to a DC power source that
complies with the safety extra-low voltage (SELV) requirements in the
UL60950-1, CAN/CSA-C22.2 No. 60950-1-03, AS/NZS 60950-1, EN/IEC
60825-1, 21 CFR 1040, EN 60950-1, and IEC 60950-1 standards.
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Spectrum System 8.4 Installation Guide
