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MX5, MX10, MX40, and MX80 Site Guidelines and Requirements

 

MX5, MX10, MX40, and MX80 Routers Physical Specifications

Table 1 summarizes the physical specifications for the router.

Table 1: MX5, MX10, MX40, and MX80 Physical Specifications

Description

Weight

Width

Depth

Height

Fixed chassis

Chassis with fan tray and power supplies: 28 lb (12.7 kg)

17.5 in. (44.5 cm)

23.46 in. (59.6 cm) (including cable management bracket and MIC release lever)

3.5 in. (8.9 cm)

Modular chassis

Chassis with fan tray, power supplies, and MICs: 30 lb (13.6 kg)

17.5 in. (44.5 cm)

23.46 in. (59.6 cm) (including cable management bracket and MIC release lever)

3.5 in. (8.9 cm)

Air filter

0.1 lb (0.05 kg)

0.25 in. (0.64 cm)

18.43 in. 46.81 cm)

3.35 in. (8.5 cm)

MIC

Maximum up to 1.2 lb (0.54 kg)

6.25 in. (15.9 cm)

6.8 in (17.3 cm)

1.2 in. (3.05 cm)

Dual-wide MIC

1.9 lb (0.9 kg)

12.5 in. (31.75 cm)

6.8 in (17.3 cm)

1.2 in. (3.05 cm)

Fan tray

2.3 lb (1.04 kg)

2.75 in. (6.96 cm)

20.5 in. 52.07 cm)

3.35 in. (8.5 cm)

DC power supply

2.6 lb (1.18 kg)

2.8 in. (7.1 cm)

13.2 in. (33.5 cm)

1.6 in. (4.1 cm)

AC power supply

2.6 lb (1.18 kg)

2.8 in. (7.1 cm)

13.2 in. (33.5 cm)

1.6 in. (4.1 cm)

MX5, MX10, MX40, and MX80 Router Environmental Specifications

Table 2 specifies the environmental specifications required for normal router operation. In addition, the site should be as dust-free as possible.

Table 2: Router Environmental Specifications

Description

Value

Altitude

No performance degradation to 10,000 ft (3048 m)

Relative humidity

Normal operation ensured in relative humidity range of 5% to 90%, noncondensing

Temperature

Normal operation ensured in temperature range of 32°F (0°C) to 104°F (40°C)

Nonoperating storage temperature in shipping container: –40°F (–40°C) to 158°F (70°C)

Seismic

Designed to meet Telcordia Technologies Zone 4 earthquake requirements

Maximum thermal output

1705 BTU/hour (500 W)

Note

Install the router only in restricted areas, such as dedicated equipment rooms and equipment closets, in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA 70.

MX5, MX10, MX40, and MX80 Router Grounding Specifications

Grounding Points Specifications

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the router must be adequately grounded before power is connected. To ground AC-powered and DC-powered routers, you must connect a grounding cable to earth ground and then attach it to the chassis grounding points using the two screws provided (see Figure 1).

Two threaded holes are provided on the upper rear of the chassis for connecting the router to earth ground. The grounding points fit SAE 10-32 screws (American). The grounding points are spaced at 0.625-in. (15.86-mm) centers.

Note

Additional grounding is provided to an AC-powered router when you plug its power supplies into grounded AC power receptacles.

Figure 1: Grounding Points on MX5, MX10, MX40, and MX80 Routers
Grounding Points on
MX5, MX10, MX40, and MX80 Routers

Grounding Cable Lug Specifications

The accessory box shipped with the router includes one cable lug that attaches to the grounding cable (see Figure 2) and two SAE 10–32 screws used to secure the grounding cable to the grounding points.

Figure 2: Grounding Cable Lug
Grounding Cable Lug
Caution

Before router installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router.

Grounding Cable Specifications

You must provide one grounding cable that meets the following specifications: 6-AWG (13.3 mm2), minimum 60° C wire, or as required by the local code.

MX5, MX10, MX40, and MX80 Rack Requirements

The router can be installed in a rack. Many types of racks are acceptable, including four-post (telco) racks and open-frame racks. An example of an open-frame rack appears in Figure 3. Table 3 summarizes rack requirements and specifications for the MX5, MX10, MX40, and MX80 router.

Table 3: MX5, MX10, MX40, and MX80 Rack Requirements and Specifications

Rack Requirement

Guidelines

Rack type and mounting bracket hole spacing

Use a four-post rack or a two-post rack. You can mount the router on any four-post or two-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75-in./4.44-cm) increments and that meets the size and strength requirements specified in this table.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Components Industry Association (http://www.ecianow.org/).

Rack size and strength

  • Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Components Industry Association (http://www.ecianow.org/).

  • Ensure that the rack is one of the following standard lengths:

    • 23.62 in. (600 mm)

    • 30.0 in. (762 mm)

    • 31.5 in. (800 mm)

  • The rack rails must be spaced widely enough to accommodate the router chassis's external dimensions: 3.5 in. (8.9 cm) high, 23.46 in. (59.6 cm) deep, and 17.5 in. (44.5 cm) wide. The outer edges of the mounting brackets extend the width to 19.2 in. (48.7 cm). The spacing of rails and adjacent racks must also allow for the clearances around the router and rack that are specified in MX5, MX10, MX40, and MX80 Routers Clearance Requirements for Airflow and Hardware Maintenance.

  • The router ships with the mounting brackets installed in the front-mount position. You can also move the brackets to the center-mount position. For instructions about moving the mounting hardware, see Moving the Mounting Brackets for Center-Mounting MX5, MX10, MX40, and MX80 Routers.

  • The chassis height of 3.5 in. (8.9 cm) is approximately 2 U.

  • The rack must be strong enough to support the weight of the fully configured router, up to 30 lb (13.6 kg).

  • Ensure that the spacing of rails and adjacent racks allows for the proper clearance around the router and rack as specified in MX5, MX10, MX40, and MX80 Routers Clearance Requirements for Airflow and Hardware Maintenance.

Rack connection to the building structure

  • Secure the rack to the building structure.

  • If earthquakes are a possibility in your geographic area, secure the rack to the floor.

  • Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.

Figure 3: Typical Open-Frame Rack
Typical Open-Frame Rack

MX5, MX10, MX40, and MX80 Routers Clearance Requirements for Airflow and Hardware Maintenance

When planning the installation site, allow sufficient clearance around the rack (see Figure 4):

  • For the cooling system to function properly, the airflow around the chassis must be unrestricted. Allow at least 6 in. (15.2 cm) of clearance between side-cooled routers. Allow 2.8 in. (7 cm) between the side of the chassis and any non-heat-producing surface such as a wall.

  • For service personnel to remove and install hardware components, there must be adequate space at the front and back of the router. At least 24 in. (61 cm) are required both in front of and behind the router. NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) in front of the rack and 24 in. (61 cm) behind the router.

Figure 4: MX5, MX10, MX40, and MX80 Chassis Dimensions and Clearance Requirements
MX5, MX10, MX40, and MX80 Chassis
Dimensions and Clearance Requirements

MX5, MX10, MX40, and MX80 Routers Cabinet Requirements and Specifications

Table 4 summarizes cabinet requirements and specifications for MX5, MX10, MX40, and MX80 routers.

Table 4: Cabinet Requirements and Specifications for an MX5, MX10, MX40, and MX80 Router

Cabinet Requirement

Guidelines for the MX80 Router

Cabinet size and clearance

  • The minimum-sized cabinet that can accommodate the router is 19-in. (482-mm) wide and 23.62-in. (600-mm) deep. A cabinet larger than the minimum requirement provides better airflow and reduces the chance of overheating. If you provide adequate cooling air and airflow clearance, you can stack several routers in a cabinet that has sufficient usable vertical space. Each router requires 2 U.

    A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronic Components Industry Association (ECIA) (http://www.ecianow.org).

  • With adequate cooling air and airflow clearance, you can stack multiple MX5, MX10, MX40, and MX80 routers in a cabinet with a four-post rack. In all cases, the rack must meet the strength requirements to support the weight.

  • The minimum total clearance inside the cabinet is 30.7 in. (780 mm) between the inside of the front door and the inside of the rear door.

Cabinet airflow requirements

When you install the router in a cabinet, you must ensure that ventilation through the cabinet is sufficient to prevent overheating. Consider the following requirements to when planning for chassis cooling:

  • Airflow must always be from front to back with respect to the rack. If the device has side to rear airflow, then provisions must be made to ensure that fresh air from the front of the rack is supplied to the inlets, and exhaust exits the rear of the rack. The device must not interfere with the cooling of other systems in the rack. Fillers must be used as appropriate in the rack to ensure there is no recirculation of heated exhaust air back to the front of the rack. Care must also be taken around cables to ensure no leakage of air in situations where recirculation may result.

  • Ensure that the cabinet allows the chassis hot exhaust air to exit from the cabinet without recirculating into the router. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust. For an illustration of chassis airflow, see Figure 5.

  • Ensure that the cool air supply you provide through the cabinet can adequately dissipate the thermal output of the router.

  • Route and dress all cables to minimize the blockage of airflow to and from the chassis.

  • Ensure that the spacing of rails and adjacent racks allows for the proper clearance around the router and rack as specified in MX5, MX10, MX40, and MX80 Routers Clearance Requirements for Airflow and Hardware Maintenance.

  • Install the router as close as possible to the front of the cabinet so that the chassis just clears the inside of the front door. This maximizes the clearance in the rear of the cabinet for critical airflow.

Figure 5: Airflow Through Chassis
Airflow Through Chassis