ACX4000 Site Guidelines and Requirements
General Site Guidelines
Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet, and wiring closet.
To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:
Keep the area around the chassis free from dust and conductive material, such as metal flakes.
Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that exhaust from other equipment does not blow into the intake vents of the device.
Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.
Install the device in a secure area, so that only authorized personnel can access the device.
Site Electrical Wiring Guidelines
Table 1 describes the factors you must consider while planning the electrical wiring at your site.
You must provide a properly grounded and shielded environment and use electrical surge-suppression devices.
Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.
Site Wiring Factor |
Guidelines |
---|---|
Signaling limitations |
If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:
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Radio frequency interference |
To reduce or eliminate RFI from your site wiring, do the following:
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Electromagnetic compatibility |
If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice. Some of the problems caused by strong sources of electromagnetic interference (EMI) are:
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Clearance Requirements for Airflow and Hardware Maintenance on ACX4000 Routers
When planning the installation site, allow sufficient clearance around the rack (see Figure 1):
For service personnel to remove and install hardware components, allow at least 2.16 in. (5.5 cm) in front of the router.
The rack or cabinet must have an adequate supply of cooling air.
Ensure that the cabinet allows the chassis hot exhaust air to exit from the cabinet without recirculating into the router.
When deploying the router in harsh environments where the router may operate between 131° F (55° C) and 149° F (65° C), allow a 1–rack unit (U) gap above and below the router.
Minimum 1 meter/second airflow in any direction

See Also
Chassis Physical Specifications for ACX4000 Routers
The ACX4000 router is a rigid sheet-metal structure that houses the hardware components. Table 2 summarizes the physical specifications of the ACX4000 router.
Description |
Value |
---|---|
Height |
4.375 in. (11.11 cm) |
Width |
|
Depth |
9.5 in. (24.13 cm) |
Weight |
16.98 lb (7.69 kg) |
ACX4000 Router Environmental Specifications
The router must be installed in a rack or cabinet housed in a dry, clean, well-ventilated, and temperature-controlled environment.
Ensure that these environmental guidelines are followed:
The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the efficiency of the router cooling system.
Maintain ambient airflow for normal router operation. If the airflow is blocked or restricted, or if the intake air is too warm, the router might overheat, leading to the router temperature monitor shutting down the router to protect the hardware components.
Depending on the ambient temperature, it may take up to 5 minutes for the router to heat up to the operating temperature.
Table 3 provides the required environmental conditions for normal router operation.
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 |
|
Commercial grade SFP/SFP+ temperature |
|
Seismic |
Designed to meet Telcordia Technologies Zone 4 earthquake requirements |
Configuration |
|
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.
Cabinet Requirements for ACX4000 Routers
You can mount the router in a cabinet that contains a 19-in. (48.3 cm) rack.
Cabinet requirements consist of:
Cabinet size
Clearance requirements
Cabinet airflow requirements
Table 4 provides the cabinet requirements and specifications for the router.
Cabinet Requirement |
Guidelines |
---|---|
Cabinet size |
|
Cabinet clearance |
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Cabinet airflow requirements |
When you mount the router in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.
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See Also
Rack Requirements for ACX4000 Routers
You can mount the router on two-post racks or four-post racks.
Rack requirements consist of:
Rack type
Mounting bracket hole spacing
Rack size and strength
Rack connection to the building structure
Table 5 provides the rack requirements and specifications for the router.
Rack Requirement |
Guidelines |
---|---|
Rack type |
Use a two-post rack or a four-post rack. You can mount the router on any two-post or four-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75 in., or 4.45 cm) increments and that meets the size and strength requirements to support the weight. A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association (http://www.eia.org). The rack must meet the strength requirements to support the weight of the chassis. |
Mounting bracket hole spacing |
The holes in the mounting brackets are spaced at 1 U (1.75 in., or 4.45 cm) so that the router can be mounted in any rack that provides holes spaced at that distance. |
Rack size and strength |
|
Rack connection to building structure |
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One pair of mounting brackets for mounting the router on two posts of a rack is supplied with each router. For mounting the router on four posts of a rack or cabinet, you can order a four-post rack-mount kit separately.