Technical data

www.asti-usa.com ASTi DACS: Operation & Maintenance Manual (Version 4, Rev. B.1)

RIU Version 4.1

EQUIPMENT REQUIRED:

• None

REMOVAL:

• Unplug all connectors to the RIU. Unplug the power from the RIU.

• The RIU is now removed.

INSTALLATION:

If a unit with factory default conﬁguration is being used (i.e. the user has not changed any of the

input gain jumpers) then perform the following procedure.

• Set the rotary address switch on the RIU face plate to the same number as the RIU you are

replacing.

• Reconnect all external cabling.

• Reconnect power.

• If the user has changed any of the input gain jumpers, then perform the following procedure:

• Make sure that you are properly grounded for ESD protection.

• Unscrew the screws in the faceplate on the side with the TDM link connectors (opposite of

the side with the DB9 audio connectors) and remove the faceplate.

• Slide the cover of the case off.

• Locate the gain jumper blocks near the DB-9 connectors. Match the gain jumper settings

between the old and replacement RIU.

• Slide the cover back onto the case.

• Replace the end of the case and put the screws back in.

• Reconnect all external cabling

• Plug in the power cord.

If, for any reason, you decide to remove the board from its enclosure, remove the ground plug

screw ﬁrst.