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DMX512 REFERENCE GUIDE
52 02.3004.0300.54
Data Cables
Smart Repeater and DMX200 units are equipped with 5-pin XLR connectors for DATA IN and DATA
THRU (out) applications. DATA IN requires a 5-pin, female XLR connector and DATA THRU
requires a 5-pin, male XLR connector. When purchasing or constructing data cables, it is important
that not only the correct cable type be used, but also quality cable to ensure a reliable DMX512 system.
Your cabling should meet the following USITT DMX512 specification requirements:
Suitable for use with EIA485 (RS485) operation at 250k baud.
Characteristic impedance 85-150 ohms, nominally 120 ohms.
Low capacitance.
Two twisted pairs.
Foil and braid shielded.
24 AWG min. gauge for runs up to 1000 feet (300m).
22 AWG min. gauge for runs up to 1640 feet (500m).
Note: Microphone type cables and other general purpose, two-core audio or signal cables are not
suitable for use with DMX512.
Refer to the USITT Recommended Practice for DMX512 guide for additional information regarding
DMX512 systems. How to obtain a copy is detailed in "Additional Documentation" on page 1.
The XLR 5-pin connectors should be wired as follows:
Pin/Wire Code to XLR Connectors
Data Thru
Cable Pinout
Male Conn
Pin 1
Foil &
Braided
Shield
Pin 2
1st
conductor
of 1st
twisted
pair
Data (-)
Pin 3
2nd
conductor
of 1st
twisted
pair
Data (+)
Pin 4
1st
conductor
of 2nd
twisted
pair
Data (-)
Pin 5
2nd
conductor
of 2nd
twisted
pair
Data (+)
Data In
Cable Pinout
Female Conn
1
2
3
4
5
1
2
3
4
5
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