Dmx input/output connections – Johnson Systems DMX 6-PORT MERGER User Manual
Page 10
WWW.JOHNSONSYSTEMS.COM
10
DMX IN 1
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
J1
DMX IN 2
DMX IN 3
DMX IN 4
DMX IN 5
DMX IN 6
DMX OUT
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
SHIELD
/
CO
MMO
N
DA
TA
-
DA
TA
+
J2
J3
J4
J5
J6
J7
Models: DMX-6PM-XLR, DMX-6PM-TB, DMX-6PM-RJ45,
DMX-6PM-XLR-RM, DMX-6PM-TB-RM, DMX-6PM-RJ45-RM
DC Power Supply Input: 12VDC, 0.5A (MIN)
A “wall wart” type AC-DC power supply is provided. Plug the power supply into a standard
120VAC Edison (NEMA 5-15 or 5-20) receptacle and plug the center positive 12VDC 2.1mm
output plug into the jack located at the rear of the enclosure.
DMX Input/Output Connections
All DMX 6-PORT MERGER models are equipped with six (6) DMX input ports and one (1) DMX
output port. All DMX inputs are terminated and must be the last (end-of-line) DMX receiving
device in the daisy-chain topology. The DMX output is terminated as per the USITT DMX512-A
protocol.
• Complies with USITT DMX512-A (ANSI E1.11 - 2008), standard protocol for digital data
control.
• Recommended cable is Belden 9829, 9842, CAT 5 or equivalent
(low-capacitance, twisted pair).
• Wiring must follow a daisy-chain topology.
• Maximum of 32 receiving devices on a single DMX line.
• Maximum cable length is 1,500 feet (455 meters).
• For more information, Google DMX, or visit: http://old.usitt.org/DMX512FAQ.aspx
Models: DMX-6PIM, DMX-6PIM-FM
DMX is connected via 3-pin breakaway type connectors, located on the DMX-6PM controller
board. Two (2) 1.109" knockouts (suitable for 0.75" conduit) are located on the bottom of
the enclosure, and are the recommended locations for the DMX wire (conduit) entry. Unplug
the breakaway connector to terminate the three (3) wires. Use a 1/8" flathead screwdriver to
torque the connector terminals to the specification provided below. Once the wire termination is
complete, plug the breakaway connector back in and ensure it is fully seated. Verify all wiring
terminations and secure the lid before powering up.
Breakaway Type Connector Wire Termination
• Strip insulation length to 0.3
"
(7.5mm).
• Torque connector terminals to 3.6 IN-LBS (0.4 NM).
• Be sure to isolate and protect all shield wires.
NOTE: For connection use copper wire only, rated for 167°F (75°C) minimum.
3-Pin Breakaway Type Connector Connection Details (Pinout)
• Pin 1 = DMX Shield / Common
• Pin 2 = DMX Data-
• Pin 3 = DMX Data+