Belden Grass Valley EC9535, Справочное руководство, Страница: 10 / 44

2
Introduction
Frame Front
Cooling
The EC9535 GSC Node Bus Converter has one fan providing forced air cooling. The fan is
accessed from the front of the frame. The fan draws cooling air from the front of the frame,
through the door, and exhausts it through a grill in the rear door. The EC9535 must have the
door correctly installed and closed for proper airflow through the chassis.
Power Supply
Power for the EC9535 is supplied through the Grass Valley PS0007 power supply module. The
PS0007 power supply module accepts a wide range of AC input voltages and pr48 VDC
outputs. The power supply automatically senses the AC input voltage range (90–130 and 180–
250 VAC) and adjusts to maintain a relatively constant DC output; no voltage selection is
required.
Frame Front
The front of the EC9535 GSC Node Bus Converter features a single door. When facing the front of
the frame the right-hand side features an open grill through which a fan draws cooling air. A
handle is provided on the left-hand side. The door is hinged on the right-hand side and swings
open from left to right. By opening the door, you can access the control cards.
Figure 1-1 shows the front of the EC9535 with the door closed. Figure 1-1 shows the EC9535
with the door removed. The card guides that house the control cards are visible.
Fig. 1-1: Front of EC9535 with Door Closed
Fig. 1-2: Front of EC9535 with Door Removed
Control Cards
The EC9535 has two control cards (EM0374), one primary and one secondary. The secondary
card is optional and used as a redundant, or stand-by, controller. Each control card is equipped
with a special mezzanine (SM0220) that facilitates communication between the control cards
and the SMS7000 system controller. Each card receives commands from a router control system,
If airflow is impeded, overheating may occur.
EC9535
GSC Node Bus Converter