3-4 Model D9854 Advanced Program Receiver Installation and Operation Guide 4021470 Rev D
Installing the D9854 Receiver
Rack Mounted
The D9854 receiver is a 1U unit with connector access at the rear panel. The receiver
is intended for mounting in a standard 19" rack with minimum 1U spacing between
units to allow adequate ventilation/air flow.
The D9854 receiver is vented from front to back. Multiple units can be stacked in a
rack, provided that adequate cooling is available.
Cooling
The D9854 receiver is cooled by the use of internal fans. The air intake is from the
front and the air outlet is on the rear.
Note: Adequate cooling must be provided equalling 107 W (maximum) at 25°C per
unit to avoid overheating.
Grounding
You must ensure that the unit is properly connected to ground in order to meet
safety and EMC requirements. Before any other connection is made, the unit must
be connected to a protected ground terminal as described below:
• Via the three wire power cord of the AC power supply. This connection is
mandatory.
• In addition, via the protective ground terminal on the rear panel of the unit. This
connection provides additional protection of the equipment.
To Mount the D9854 Receiver
To mount the D9854 receiver in a rack, do the following:
1. Mount L-brackets in the rack to support each D9854 receiver to be installed.
2. Place the receiver in its position in the rack.
3. Mount the receiver securely to the rack by securing the mounting flanges to the
rack using the four screws provided.
4. Make sure the air outlet holes on the back of the receiver are not obstructed to
allow air flow from the front to the back of the chassis.
CAUTION:
The inlet air temperature must not exceed 50°C/122°F at any time.
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