Power supply wiring
NOTES: • Only one power supply is required. A single power supply connected to
either unit in the pair powers both units.
• A power supply is included with each transmitter.
Figure 11 shows how to wire the connector. Use the supplied
Smooth 
Ridges
A | A |
|
| SECTION |
|
| Power Supply | Tie Wrap |
| Output Cord |
|
| 3 | 5 |
Captive Screw
Connector
Figure 11. Power Connector Wiring
CAUTIONS: • This product is intended to be supplied by a Listed Power Unit marked “Class 2” or “LPS,” rated 12 VDC, 1.0 A minimum. Always use a power supply supplied by or specified by Extron. Use of an unauthorized power supply voids all regulatory compliance certification and may cause damage to the supply and the end product.
•Unless otherwise stated, the AC/DC adapters are not suitable for use in air handling spaces or in wall cavities.
•The installation must always be in accordance with the applicable provisions of National Electrical Code ANSI/NFPA 70, article 75 and the Canadian Electrical Code part 1, section 16. The power supply shall not be permanently fixed to a building structure or similar structure.
•Power supply voltage polarity is critical. Incorrect voltage polarity can damage the power supply and the unit. The ridges on the side of the cord (see figure 11) identify the power cord negative lead.
To verify the polarity before connection, plug in the power supply with no load and check the output with a voltmeter.
WARNING: The two power cord wires must be kept separate while the power supply is 
plugged in. Remove power before wiring.
CAUTION: The length of the exposed (stripped) copper wires is important. The ideal length is 3/16 inch (5 mm). See the NOTE on page 6 for details.
NOTE: Do not tin the power supply leads before installing them in the connector. 
Tinned wires are not as secure in the connector and could be pulled out.
DTP HDMI 301 • Installation and Operation 10
