metaphase-tech.com
Metaphase
Technologies
DDC-3
pg. 3
Wiring Connections
Please refer to the diagram below for LED output and trigger input connections.
The DDC-3 is powered by a user-supplied regulated power supply having the following ratings:
• 12 to 24VDC
• 30 mA
DDC-3 Wire Recommendations
• Minimum recommended wire size - 24AWG
• The device being driven by the DDC-3’s 0-10V output should be located close to the DDC-3, ide
ally 10 ft (3 meters) or less. However, the maximum distance is strongly determined by the electri-
cal noise in the operating environment. In general, the 0-10V output wire pair should be twisted
and/or shielded so they do not create an enclosed area in which to pick up magnetic fields from
external sources. The output wire pair should not be located near wires carrying high voltage
(120V or greater) or fast-rising edges (solendoids) which could induce noise into the DDC-3 out-
put. Typical signal noise suppression techniques such as putting flyback “snubber” diodes across
inductive loads (solenoid coil) should be utilized.
Ethernet
Input
12-24 VDC
USB
Chan 1 Chan 2 Chan 3
- +
- +
- +
DDC-3
