User manual RANE DA 216A

[. . . ] When using the Inputs for line-level, pressing in both the INPUT PAD and the INPUT GAIN switches provides a nominal gain of 0 dB. An additional 16 dB of gain is available when both the MASTER LEVEL and OUTPUT LEVEL controls are turned all the way up (clockwise). Never connect anything except an approved Rane power supply to the Input that looks like a telephone jack on the rear of the DA 216a. Use only the supply sent with your DA 216a. WEAR PARTS: This product contains no wear parts. Manual- DA 216a FRONT PANEL 3 MASTER LEVELS A B 1 2 3 4 5 6 7 OUTPUT LEVELS 8 9 10 11 12 13 14 15 16 DA 216a A POWER OL OL A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B A A+B B DISTRIBUTION AMPLIFIER 1 2 4 1 POWER Indicator: When this yellow LED is illuminated power is available to the DA 216a. [. . . ] With a line-level Input, it sets the gain to 20 dB (out) or 0 dB (in). 5 PHANTOM POWER switch: When activated (in), 15 VDC Phantom Power appears at each mic-level Input and the PHANTOM POWER LED illuminates. If an Input is selected for line-level, the Phantom Voltage is disabled for that channel, even when the PHANTOM LED is lit. 6 POWER Input connector: Use only a model RS 1 or other remote AC power supply approved by Rane. Never use a power supply with your DA 216a other than the one supplied from the factory or an exact replacement obtained or approved from Rane Corporation. This unit's power supply input is designed for an AC supply, delivering 18 volts from a center-tapped transformer capable of supplying at least the current demanded by this product. Using any other type of supply may damage the product and void the warranty, which at two years (three if you send in the warranty card) parts and labor is worth safeguarding, don't you think?7 Chassis ground screws: #6-32 screws are used for chassis grounding purposes. See the Chassis Grounding note below. IMPORTANT NOTE CHASSIS GROUNDING The DA 216a is supplied with an external power supply (the RS 1). On the rear chassis a #6-32 screw is provided to allow for attachment of the grounding wire. This chassis ground point must be connected to earth ground either through another product, which utilizes a three-prong grounded AC power cord, or by attaching the wire to a known earth ground (such as the screw on a grounded AC outlet). Manual- DA 216a CONNECTION When connecting the DA 216a to other components in your system, leave the power supply for last. This gives you a chance to make mistakes and correct them without announcing what you did to the whole world and without damaging "downstream" equipment. Remember this when setting INPUT PAD, INPUT GAIN and PHANTOM POWER switches. Suddenly changing the gain by 40 dB can have a profound impact on the ears of the listening audience. This cable should always be two conductors plus shield, even for unbalanced operation. If you must use shielded single conductor, keep the cable as short as possible to avoid hum or radio pick up. For unbalanced, the "hot" Input goes to the "+", and the common wire goes to the "­" while the shield connects to one of the chassis grounds. Since the common wire and shield are to be tied together at one end in an unbalanced system, this connects the "­" Input to chassis ground. In a balanced system (highly preferred), the "+" Input connects to the "+" Output of the previous equipment. The "­" Input then connects to the "­" Output and the shield goes to the chassis ground. These Input connections may be reversed if it is necessary to reverse the polarity of the Input signal. Be aware, if a microphone is used which requires Phantom Power, the shield must be connected to chassis ground to complete the Phantom Power circuit. [. . . ] Adjust the MASTER LEVEL clockwise until the OL LED just blinks on the loudest expected program material. If the MASTER LEVEL is turned all the way up and the OL LED is not lighting, set the INPUT GAIN to 60 dB and adjust the MASTER LEVEL again. If the OL LED is not lit, adjusting the OUTPUT LEVEL cannot cause clipping within the DA 216a. The user may still want to turn down the OUTPUT LEVEL to avoid overloading downstream equipment. [. . . ]