Comtech EF Data DD240XR Rev Е - Manual (Page 13)

DD240XR High-Speed Digital Demodulator Installation
MN-DD240XR – Rev. E 2-1
Installation
2
2.0 Installation Requirements
The DD240XR can be installed within any standard 19-inch equipment cabinet or rack, and
requires one rack unit (RU) mounting space (1.75 inches) vertically and 17 inches of depth.
Including cabling, a minimum of 20-inches of rack depth is required. The rear panel of the DD240
is designed to have power enter from the left and IF cabling enter from the right when viewed from
the rear of the unit. Data and control cabling can enter from either side although they are closer to
the center. The unit can be placed on a table or suitable surface if required.
There are no user-serviceable parts or configuration settings located inside
the DD240XR
chassis. There is a potential shock hazard internally at the
power supply module. DO NOT open the DD240XR chassis under any
circumstances.
Before initially applying power to the unit, it is a good idea to disconnect
the transmit output from the operating ground station equipment. This is
especially true if the current DD240XR configuration settings are unknown,
where incorrect setting could disrupt existing communications traffic.
Earth connection is essential before connecting power to the DD240XR due
to high leakage current.
The DD240XR contains a Lithium Battery. DANGER OF EXPLOSION exists
if the battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used
batteries in accordance with manufacturer's instructions.