Cisco Model D9479 Gigabit QAM Modulator Installation Guide
Chapter 2 Installing the Dual SFP GQAM
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78-745431-01 Rev E
Install the Modulator Into a Rack
The front bezel of the GQAM mounts to the front of the equipment rack. The GQAM
fits into an EIA RS-310 rack mount.
Important: You must read the preceding section,
Important: You must read the preceding section,
Stacking Guidelines (on page 18),
before installing the modulators into the rack.
Installation Requirements
Installation Requirements
This section lists the power, rack, and environmental conditions necessary for
This section lists the power, rack, and environmental conditions necessary for
installation.
Power Requirements Table
Item
Specification
Supply Voltage
90 to 130 VAC @ 47 to 63 Hz (AC unit)
180 to 264 VAC @ 47 to 63 Hz (AC unit)
-42 to -57 VDC (DC unit)
Fuses
4.0 A SLO BLO 250 V (AC unit)
6.3 A SLO BLO 250 V (DC unit)
Line Frequency
47 to 63 Hz (AC unit only)
Power Required
155 VA (typical)
Power Dissipated
151 Watts (typical)
In Rush Current
35 amps maximum, Vin = 130 VAC (AC unit)
75 amps maximum, Vin = 264 VAC (AC unit)
15 amps maximum, Vin = -57 VDC (DC unit)
Rack Requirements Table
Item
Specification
Rack Mount Type EIA RS-310
Height
Height
1.75 in./44.45 mm
Width
19 in./482.6 mm
Depth
22.5 in./571.5 mm
Weight
13.5 lb./5.4 kg