> For the complete documentation index, see [llms.txt](https://docs.gxc.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gxc.io/hw/5g/5g-fronthaul-multiplexer/fhm-hardware-installation-guide/pre-installation.md). # Pre Installation This section describes the recommended location and environment required for best performance of the Onyx FHM and the materials and tools needed to install the Onyx FHM. ## Installation Location The Onyx FHM is designed to be installed in either a 19-inch standard rack or chassis that conforms to EIA-310 dimensions, or to be mounted flush to a wall. When front mounted in a 19-inch Rack or Chassis, the rack or chassis must have a front-to-back clearance (depth) of no less than 10.9 inches (277mm). The Onyx FHM is air cooled by its integrated fans and relies on intake air that has a temperature of -40°C to 65°C. Ideally, the rack/chassis shall reside in an indoor climate-controlled environment. Additionally, if a 19” server chassis is utilized, adequate airflow through the chassis and clearance of at least 6 inches (153mm) from the front doors of the chassis must be ensured. Do not install the Onyx FHM where the relative humidity of the surrounding air can exceed 95% or where it will be exposed to falling or dripping water or other liquid contaminates. To best ensure long-term performance of the Onyx FHM, install the device in a location with minimal dust in the environment, or where dust mitigation (air filtering) is present. ## Common Installation Tools | | | | | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Adjustable Torque Driver | #2 Phillips Driver Bit | Percussion Drill or |

4mm Concrete Drill Bit
2mm / 4mm HSS Drill Bit
3/8-Inch HSS Drill Bit

| | | | | | | Level bar | 10mm Wrench | #2 Phillips-Head Screwdriver | Hydraulic Crimping Tool | | | | | | | Wire Stripper capable of 6 AWG and 14 AWG wire | | | | ## Other Required Items (Installer to Provide) {% stepper %} {% step %} A length of 6-AWG Green/Yellow to terminate to the Onyx FHM Grounding Lug. Terminated end shall have 0.5 +/- 0.02 inch (12.7 +/- 0.5 mm) of insulation removed.

Stripped 6-AWG Wire Details

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