Comtech EF Data DD240XR Rev Е - Manual (Page 14)

Installation DD240XR High-Speed Digital Demodulator
2-2 MN-DD240XR – Rev. E
2.1 Unpacking
The DD240XR Demodulator was carefully packaged to avoid damage and should arrive complete
with the following items for proper installation:
 DD240XR Unit
 PCMCIA Card (May be installed, depending upon configuration. If no card is
installed, the unit has been factory configured)
 Power Cord, 6 foot with Applicable AC Connector
 Installation and Operation Manual.
2.2 Removal and Assembly
Carefully unpack the unit and ensure that all of the above items are in the carton. If the Prime AC
power available at the installation site requires a different power cord/AC connector, then
arrangements to receive the proper device will be necessary before proceeding with the
installation.
The DD240XR modulator is shipped fully assembled. It does not require removal of the covers for
any purpose in installation. The only replaceable assembly in the unit is the data interface and is
not intended to be accomplished in the field. If the AC power connector is the wrong type for the
installation, either the cable or the power connector should be replaced. The power supply itself is
designed for universal application using from 100 to 240 VAC, 50 to 60 Hz, < 40 W.
2.3 Mounting Considerations
When mounted in an equipment rack, adequate ventilation must be provided. The ambient
temperature in the rack should be between 10
° and 35° C, and held constant for best equipment
operation. The air available to the rack should be clean and relatively dry. The DD240XR units
may be stacked one on top of the other up to a maximum of 10 consecutive units before providing
a 1 RU space for airflow.
Do not mount the DD240XR in an unprotected outdoor location where there is direct contact with
rain, snow, wind or sun. The DD240XR is designed for indoor applications only.
The only tools required for rack mounting the DD240XR
is a set of four rack-mounting screws and
an appropriate screwdriver. Rack mount brackets are an integral part of the cast front bezel of the
unit and are not removable.
Shielded cables with the shield terminated to the conductive back shells are required in order to
meet EMC directives. Cables with insulation flammability ratings of 94 VO or better are required
in order to meet low voltage directives.
Earth connection is essential before connecting power to the DD240XR due to High Leakage
Current.