User manual RANE DA 216

[. . . ] Never connect anything except an approved Rane power supply to the thing that looks like a telephone jack on the rear of the DA 216. This is an AC input and requires special attention if you do not have a power supply exactly like the one that was originally packed with your unit. See the full explanation of the power supply requirements elsewhere in this manual. DA 216 CONNECTION When connecting the DA 216 to other components in your system for the first time, leave the power supply for last. This gives you a chance to make mistakes and correct them without damage to your fragile speakers, ears and nerves. [. . . ] Attach either Microphone or Line level sources here. Connect balanced sources to the respective "+" and "­" terminals, and tie the shield using the nearest chassis grounding terminal above the screw terminals. Connect unbalanced sources with two conductor shielded cable connected to "+" and "­", with the shield connected to chassis ground. Refer to the Sound System Interconnection section later in this manual. Balanced OUTPUTS are provided for each channel. Connect two conductor shielded cable to "+" and "­" terminals. Tie the shield to ground, or leave open--your choice. For unbalanced use, do not tie "­" to GND. To obtain a 1-in-32-out single-ended distribution amp, use the "+" and GND for the "primary" output and connect the "­" and GND for the "secondary" output. (Note: The "secondary" outputs will be inverted. If driving a balanced input circuit, swap the "+" for "­" terminals to invert the signal for correct polarity. ) 3. In the 0 dB (out) position, the respective input stage is set for microphone input levels. In the -40 dB (in) position, line level signals are accepted and Phantom Power for this input is disabled if activated. The gain switches change the gain by 20 dB and are used along with the MASTER LEVELS to trim input gain for optimum dynamic range. See OPERATING INSTRUCTIONS on page Manual-4. When activated (in), 15 VDC Phantom Power appears at each 0 dB PAD selected INPUT, and the PHANTOM POWER LED illuminates. Use only a model RS 1, RAP 10, or other remote AC power supply approved by Rane. The DA 216 is supplied with a remote power supply suitable for connection to this input jack. Consult the factory for replacement or substitution. 6-32 screws are used for chassis grounding purposes. Attach the shields of the audio cables to these points. See the CHASSIS GROUNDING note below. IMPORTANT NOTE CHASSIS GROUNDING The DA 216 is supplied with an external power supply (the RS 1). [. . . ] Set the OUTPUT LEVELS halfway, straight up, noon. Check that the OL light (and ensuing distortion) occasionally blinks with the highest expected level of signal. If it does not come on during the loudest mic signal peaks, change the rear panel GAIN switch to 60 dB. If it is "on" more than intermittently, turn the MASTER LEVEL control counterclockwise so the peaks barely flash the OL LED. [. . . ]