Black Box DESKTOP TELCO Specifications download pdf (Page 6)

Configuring and Installing Modules

Black Box recommends turning the chassis power off before proceeding.

To install a High Density Media Converter II module, slide the module into the

chassis until the module is firmly seated in the backplane.

Secure the module to the chassis by tightening the captive thumb screw on the High

Density Media Converter II module.

Attach the network cables between the High Density Media Converter II module

and other devices that will be interconnected.

Connect the DC power source.

DC Power Supply Wiring Instructions

The following image shows the wiring configuration for a 48 VDC power supply in a negative

ground system application. For positive ground system applications remove the chassis

ground shorting jumper and connect it between the positive terminal and the chassis ground

terminal. Alternatively, the chassis grounding jumper can be eliminated and the chassis

ground connected at the power source.

NOTE

Incorrect wiring will result in chassis malfunction. 2-Slot Desktop Chassis (DC) is

compliant with Isolated Grounding Plane practices. The POSITIVE and NEGATIVE

terminals are isolated from chassis ground and must have a ground reference at the

power-sourcing equipment.

This equipment is designed to permit the connection of the grounded conductor of the DC

supply circuit to the earthed conductor at the equipment. If this connection is made, all of the

following conditions must be met:

This equipment shall be connected directly to the DC supply system earthed

electrode conductor or to a bonding jumper from a grounded terminal bar or bus to

which the DC supply system grounding electrode conductor is connected.

This equipment shall be located in the same immediate area (such as, adjacent

cabinets) as any other equipment that has a connection between the earthed

conductor of the same DC supply circuit and the earthing conductor, and also the

point of earthing of the DC system. The DC system shall not be earthed elsewhere.

The DC supply source shall be located within the same premises as this equipment.

Switching or disconnecting devices shall not be in the earthed circuit conductor

between the DC source and the point of connection of the earthing electrode

conductor.

Rackmount Precautions

Elevated Operating Ambient - If installed in a closed or multi-unit rack assembly,

the operating ambient temperature of the rack environment may be greater than

room ambient. Therefore, consideration should be given to installing the

equipment in an environment compatible with the maximum ambient temperature

(Tma) specified by the manufacturer.

Reduced Air Flow - Installation of the equipment in a rack should be such that the

amount of air flow required for safe operation of the equipment is not

compromised.

Mechanical Loading - Mounting of the equipment in the rack should be such that a

hazardous condition is not achieved due to uneven mechanical loading.

Circuit Overloading - Consideration should be given to the connection of the

equipment to the supply circuit and the effect that overloading of the circuits

might have on overcurrent protection and supply wiring. Appropriate

consideration of equipment nameplate ratings should be used when addressing this

concern.

Reliable Earthing - Reliable earthing of rack-mounted equipment should be

maintained. Particular attention should be given to supply connections other than

direct connections to the branch circuit (e.g. use of power strips).

1 2 3 4 5 6

Comments to this Manuals

No comments

Black Box DESKTOP TELCO Specifications Page 6

Comments to this Manuals