Extron electronics DTP DVI 330 Guide de l'utilisateur télécharger pdf (Page 17)

DTP HDMI 330 Tx/Rx Transmitter and Receiver • Reference Information 11

UL Rack-Mounting Guidelines

The following Underwriters Laboratories (UL) requirements pertain to the installation of the

unit into a rack.

• Elevated operating ambient temperature — 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, consider installing the equipment in an environment

compatible with the maximum ambient temperature (TMA = +122 °F, +50 °C) specified

by Extron.

• 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 (grounding) — 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 (such as use of power strips).

Disconnecting the Ground

If you cannot resolve a ground potential difference between the transmitter and receiver

installation sites (as suggested by a missing or unstable picture), remove the ground

connection between the units as follows:

NOTE: Once you have removed the ground jumpers, the DTP HDMI 330 cannot

extend analog audio and one unit cannot remotely power the other. No analog audio

is output and each unit requires a local power supply.

1. Disconnect any cables and remove the transmitter and receiver from any rack or other

installation option.

2. Remove and retain the screws securing the covers to the transmitter and receiver. Slide

the covers forward slightly and lift them off both units (see figure 9).

• Transmitter — Six screws, two on each side and two on top

• Receiver — Eight screws, three on each side and two on top

Cover Screws

(8 Plcs)

Cover Screws

(6 Plcs)

Transmitter Receiver

Rear Panel Rear Panel

Figure 9. Opening the Transmitter and Receiver

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Extron electronics DTP DVI 330 Guide de l'utilisateur Page 17