Pearl DLC-C003 Operator's Manual page 120

You can extend the tablet cable either with a 25-pin D straight through
cable, or an RJ45 extension cable if the tablet is fitted with an RJ45
connector.
An DORTRON's Riggers Remote cable can be used if modified so that
pin 25 is connected straight through.
An RJ45 extension cable must be connected straight through with an
RJ45 plug on one end and an RJ45 trailing socket on the other end.
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