Extron electronic sMDA 3A RCA user manual

Summary of the content on the page No. 1

MDA 3 Series • User Guide
This guide describes the installation and operation of the Extron MDA 3 Series Mini Distribution Amplifiers (MDA).
FCC Class A Notice
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the
FCC rules. The Class A limits provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency

Summary of the content on the page No. 2

LR LR Connections, Controls, and Indicator Figure 1 show all of the combinations of connectors that you may encounter with your MDA. 1 2 MDA 3SVA, Rear Panel INPUT OUTPUTS MDA 3SVA 1 2 3 POWER 12V INPUT OUTPUTS BAL .5A MAX LR LR 1 LR 2 LR 3 1 2 3 UNBAL 8 5 6 7 3 4 3 4 MDA 3AV, MDA 3V Dual, Rear Panel Rear Panel MDA 3AV MDA 3V O I DUAL A U N T 1 2 3 1 2 3 POWER POWER 12V INPUT OUTPUTS 12V BAL .34A MAX .5A MAX LR LR 1 LR 2 LR 3 B 2 3 1 1 2 3 INPUT OUTPUTS UNBAL 8 5 6

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LR LR NOTES: • The length of exposed wires is critical. The ideal length is 3/16 inch (5 mm). • If the stripped section of wire is longer than 3/16 inch, the exposed wires may touch, causing a short circuit. • If the stripped section of wire is shorter than 3/16 inch, wires can be easily pulled out even if tightly fastened by the captive screws. • 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.

Summary of the content on the page No. 4

Power (All Models) ATTENTION: Power supply voltage polarity is extremely important. Applying power with incorrect voltage polarity could damage the power supply and the MDA. Identify the power cord negative lead by the ridges on the side of the cord. h Power connector — Plug the external 12 VDC power supply into this two-pole captive screw connector. The power supply is included with the unit. Figure 5 shows how to wire the connector. Smooth Ridges SECTION A–A Power Supply Tie Wrap Output