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Description

This section provides instructions and the recommended order for installing (fully seating)

the circuit packs in the 1665 DMX shelf. The procedures in this section assume that the

SYSCTL is installed and software has been successfully downloaded as described in the

section,

Locations of circuit packs (Function Unit slots) are shown in

DMX High-Capacity shelf" (p.

Circuit packs are keyed to prevent being inserted into the wrong shelf position. Installing

circuit packs requires some force.

When a circuit pack is installed, its FAULT LED will light for several seconds to possibly

several minutes then extinguish.

A properly grounded ESD wrist strap MUST be worn when handling circuit packs.

Important!

will require a pointed object.

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365-372-304R7.1

Issue 1, November 2007

Software installation (p.

CAUTION

Laser safety

When connecting fiber loops between the IN and OUT ports on optical circuit

packs, always connect to the IN port first and then the OUT port. This will

prevent any optical radiation from being present at the fiber end.

CAUTION

Equipment damage

When installing the circuit packs, be careful to insert them straight to avoid

damaging the backplane pins.