Juniper Networks G10 CMTS manual DC Power, G10 Cmts Environmental Specifications

Environment

•DC Power

•
•	The G10 CMTS requires a DC power source that operates within a voltage range of –36 to
•	–75 VDC. Unlike the AC configuration, the DC power transition modules do not operate
•	independently. Each DC power transition module supports the power supplies in both
•	domains of the chassis. If one DC power transition module fails, all the current for the system
•	must be supplied from a single power source. Therefore, within the United States, a 50 A
•	circuit breaker (36 A maximum, plus margin) must be used with each of the two independent
•	DC power sources connected to the CMTS. Outside the United States, each DC power source
•	must have circuit breaker protection to account for a maximum current of 36 A, plus
•	additional margin required by local regulations.
•
•	Use the factory-supplied DC power cord ring lugs, and wire according to your local code for
•	the DC power cord connection to the G10 CMTS.
•
•

•Environment

•
•	The installation site must meet the specifications provided in Table 25 to maintain the proper
•
	environmental conditions for the G10 CMTS.
•
•

•Table 25: G10 CMTS Environmental Specifications

•
	Parameter	Condition	Requirement
•
•	Temperature	Ambient operating	0° to +40°C (0° to +104°F)
•		Ambient non-operating	–35° to +60°C (–31° to +140°F)
•
	Humidity	Ambient operating and non-operating	10% to 90% (non-condensing)
•
	Altitude	Operating and non-operating	0 to 3048 m (10,000 ft)
•
•	Vibration	Operating	5 Hz to 200 Hz, at 1.0g (1.0 oct/min)
•
		Non-operating	5 Hz to 200 Hz, at 1.0g (1.0 oct/min)
•			200 Hz to 500 Hz, at 2.0g (1.0 oct/min)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

72 JUNOSg 3.0 G10 CMTS Hardware Guide