ERX-7xx Models Specifications ! 113
Chapter 11: System Specifications
ERX-7xx Models Specifications
Table 18: ERX-7xx models specifications
Category Specification
Weight
Chassis only
Chassis fully configured
22 lb9.9 kg
46 lb20.7 kg
Dimensions
10.5 (H) x 19 (W) x 16 (D) inches; 26.67 x 48.26 x 40.64 cm
Environmental Requirements
Ambient operating temperature
Ambient operating humidity
Ambient storage temperature
Ambient storage humidity
NEBS GR-63-CORE compliant
! Long term: 41
°
to 104
°
F (5
°
to 40
°
C)
Short term: 23
°
to 122
°
F (–5
°
to 50
°
C)
! Long term: 5% to 85% (noncondensing)
Short term: 5% to 95% (noncondensing)
–40
°
to 158
°
F (–40
°
to +70
°
C), 95% relative humidity
5% to 95% (noncondensing)
Heat Dissipation
1400 W, 4780 BTU/hour maximum
DC Input
Voltage
Current
Power
Redundancy (input power)
–40 to –72 VDC
30 A @ –48 VDC
1400 W maximum
2 independent line feeds
Space Requirements
! 3 feet (90 cm) behind router or rack
! Do not block air vents on sides of the router.
! Do not place equipment that exhausts hot air to left on the right of the
router.
! Be aware that router exhausts hot air from its left side.
Airflow
! Airflow direction is in through the right side and out through the left side.
See Figure 18 in Chapter 3, Installation Guidelines and Requirements.
NEBS Certification
! SR-3580 (FD-15): Network Equipment Building System (NEBS) Criteria
Levels, Issue 1, November 1995
! GR-63 (LSSGR, FD-15): Network Equipment Building System (NEBS)
Requirements: Physical Protection, Issue 1, October 1995
! GR-1089 (LSSGR, FD-15): Electromagnetic Compatibility and Electrical
Safety - Generic Criteria for Network Telecommunications Equipment,
Issue 2, Revision 1, February 1999
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