PRG Controlling VARI-LITE Equipment Using DMX 512 - Manual (Page 62)

DMX512 R EFERENCE G UIDE
5 4 02.3004.0300.54
Male Termination Connector
A male XLR termination connector is required at the last luminaire (or "far
end of the line") to prevent signal reflections. Signal reflections may cancel
out the signal at certain line lengths, resulting in errors. The terminator is also
necessary for software downloads and running tests on multiple luminaires.
To construct your own connector, you will need the following components:
•
5-pin, male XLR connector.
• Two 1/4W 5% 120 ohm resistors.
Loopback Connector
When transferring software versions from luminaire to luminaire, a loopback
connector is required at the first luminaire in the data link.
To construct your own connector, you will need the following components:
•
5-pin, female XLR connector.
• Two small segments of 22AWG wire.
Solder resistors across
pins 2 & 3, and 4 & 5
1
2
3
4
5
Solder wires across
pins 2 & 4, and 3 & 5
1
2
3
4
5