
ALPHA 4000 RGB NEMA 12, INSTALLATION MANUAL (PN 1778600401 REV. B)1-5
Alpha 4000 RGB NEMA 12
INSTALLATION
EMI compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment
is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with
installation guidelines, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at
his own expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority
to operate the equipment.
Environmental requirements
Care must be taken to observe these considerations when selecting a location for the sign.
Signs:
•Are for use in an indoor environment and should not be continuously exposed to direct sunlight.
• Are not designed to be hung in a window. Hanging the sign in a window will void the warranty.
•Should only be used in an environment where the temperature is between 0°C and 55°C (32° and 131°F).
• Should only be used in an environment where the humidity (non-condensing) does not exceed 95%.
• Must be installed with at least 1 in (2.5 cm) clearance on each end of the case and at least 2 in (5.1 cm) clearance
above the case.
• Warranty will be voided by any form of misuse of abuse of the product.
Reducing electrical noise
Adaptive recommends the following to decrease the amount of electrical emissions and noise with the Alpha 4000
RGB NEMA 12 signs:
•Route incoming power to assign a path separate from a sign’s communication wires. Do NOT run the power and
communication wires in the same conduit or directly next to one another.
•Where power and serial communications wires must cross, the intersection should be perpendicular.
• Shield all serial communication wires. Connect the shield to ground at only one point.
Installation
Notice: Sign installation must be performed by qualified personnel.
Notice: Any modifications made to the sign housing will void the warranty.
Notice: Always disconnect the communication cable(s) before disconnecting the power.
Notice: Do not change or alter the factory applied finish of the ALPHA 4000RGB sign.
Temperature protection
The Alpha 4000 RGB NEMA 12 sign includes automatic temperature controls to determine when the internal temperature
of the sign is too hot to continue normal operation. The temperature controls are based on the internal temperature of the
sign, which is influenced by the ambient temperature, the sign's display load, and the duration the sign is on.
If the internal temperature rises above the temperature limit, the LED output is forced into a reduced power mode which
dims the brightness of the LEDs. If the internal temperature rises above the highest limit, the display will blank to prevent
damage to the sign. If the temperature falls below the auto-dimming threshold level, then auto-dimming stops and the LED
brightness returns to normal level.