Power supply requirement, Control station wiring, Dmx input and output wiring – Johnson Systems CS-DMX Series Programmable Stations User Manual
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Power Supply Requirement
The control station requires a regulated DC power supply from 10.6VDC to 18VDC. A 12VDC
power supply is recommended. The power supply common (V-) connects to the “COM”
connection on J1 and the power supply positive (V+) connects to the “V+” connection on J1.
Control Station Wiring
CS-DMX Series control stations can be wired for various applications. The control station wiring
can be configured for the functionality required.
A 6-position breakaway connector (J1) is used to connect the power supply (COM, V+), three
switches (ON, DIM, RST), as well as the master pot (MP) analog output (not used with CS-DMX
Series control stations).
The recommended wire for these connections is stranded, #18 AWG copper wire, however
smaller gauge wire may be suitable for some applications where distances are less than
150' (50m). The breakaway connector will accept wire sizes from #28 to #12 AWG.
Breakaway connectors are provided for all wiring terminations. For proper termination, the strip
length should be 0.28" (7mm). A 1/8" (3.2mm) flat head screwdriver should be used to tighten the
connections and torque to 3.5Lb-In (0.4Nm).
DMX Input and Output Wiring
All CS-DMX Series have a 3-position breakaway connector used to receive DMX in (DMX IN) and
a 3-position breakaway connector used to transmit DMX out (DMX OUT). The DMX received on
the DMX in (if applicable) connector is merged with the DMX generated by the control station and
retransmitted through the DMX out connector. Merged DMX data is highest takes precedence
(HTP) for equivalent DMX control channels. There is only a 1-packet (28msec) delay in the
retransmitted DMX from the original DMX received!
For proper termination, the strip length should be 0.28" (7mm). A 1/8" (3.2mm) flat head
screwdriver should be used to tighten the connections and torque to 3.5Lb-In (0.4Nm). Be sure to
isolate and protect all shield wires and comply with standard RS-485 termination practices.
• DMX IN (SHIELD/COMMON, DATA-, DATA+) is terminated on the J1 connector.
• DMX OUT (SHIELD/COMMON, DATA-, DATA+) is terminated on the J2 connector.
• Complies with USITT DMX512-A (ANSI E1.11 - 2008), standard protocol for digital data
control.
• Recommended cable is Beldon 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://www.usitt.org/DMX512FAQ.aspx
NOTE: For long DMX lines exceeding 1,000 feet (305 meters) the “DMX TERM” jumper (JP1)
should be in the terminated (upper) position.
NOTE: Be sure the last DMX receiving device (end-of-line) is terminated with a 100Ω to 120Ω
resistor.