User manual RANE BB 44X-OPTION 88

[. . . ] OPERATORS MANUAL BB 44X / OPTION 88 Application Information Driving Impedances Some people wrongly feel you cannot use a transformer to convert between -10 dBV and +4 dBu because of low impedances. [. . . ] Wiring The BB 44X follows AES/ANSI/IEC standards of pin 2 positive and pin 3 negative. Note the shields (commons) of the RCA jacks are tied for the Inputs and the Outputs but not to each other. A positive signal applied to pin 2 of the 3-pin connectors causes a positive signal to appear on the tip of the associated RCA jacks, and vice-versa. Signal Direction Signal can be converted through the channels either direction. That means there is the possibility of having 4 channels -10 dBV unbalanced to +4 dBu balanced, or vice versa (in the standard unit). Chassis Grounding A tapped hole and a #6-32 screw is provided for chassis grounding purposes. If the grounding integrity of the rack screws is in doubt, run a wire from this screw to a known earth ground. Expansion Assembly The OPT 88 (Option 88) expands the BB 44X into an eight channel model. [. . . ] W. , Mukilteo WA 98275-5098 TEL 425-355-6000 FAX 425-347-7757 WEB www. rane. com All features & specifications subject to change without notice 12275 [. . . ]