User manual RANE FPM 42

[. . . ] This gives you a chance to make mistakes and correct them without damage to your fragile speakers, ears and nerves. This wire should always be two-conductor plus shield, even for unbalanced operation. As with all Rane products, pin 2 is used for "hot" or "+" signal polarity, pin 3 is "return" or "­" and pin 1 is signal ground. (It will not hurt anything either. ) If the input is coming from another piece of equipment in the signal path, connect the shield only at the receiving end to help prevent ground induced hum. [. . . ] If balanced operation is your choice, use both jacks as indicated by the graphics printed to the right (or top) of the jacks. These are optional unbalanced outputs programmed by changing jumpers inside the unit. Refer to the graphics found to the left (or bottom) of the jacks, and to the silkscreened word "AUX" found on the printed circuit board. Lift the jumper header up and reposition one pin over and slide back down (covering the word "AUX"). FLEX BUS IN CONNECTOR This input accepts bus information from other FLEX mixer modules, such as an FM1 14, FMM 42 or another FPM 42. The combined results appear at the FLEX BUS OUT jack, as well as the terminal strip outputs. FLEX BUS OUT CONNECTOR This seven-pin DIN connector provides output to other mixer modules, such as another FPM 42, an FMI 14 or an FMM 42. Signals present here include the AUX of both this FPM 42 as well as any AUX sends generated by other FLEX mixer modules connected to the FLEX BUS IN above. The Master A and B signals are also available, which are the sum of this module and any other modules connected to the bus input. Used to select Aux source to be PRE- or POST- input LEVEL A/B controls. POWER INPUT CONNECTOR USE ONLY A MODEL RS 1, FRS 8, OR OTHER REMOTE AC POWER SUPPLY APPROVED BY RANE. The FPM 42 is supplied with a remote power supply suitable for connection to this input jack. On this unit, the Ground Lift switch is located along the bottom edge (vertical mounting), or along the right-hand side (horizontal mounting, from the front). Since the switch's location prevents easy use once installed, it is suggested you decide which position is required, and set it before installation. On this unit, the Phantom Power switch is located along the top edge (vertical mounting), or along the left-hand side (horizontal mounting, from the front). Since the switch's location prevents easy use once installed, it is suggested you decide if phantom power is required, and set it before installation. The ON position lights the LED when the switch is positioned to the rear of the unit. TOP-REAR COVER REMOVAL PROCEDURE: To gain access to the PRE/POST switches and/or output jumpers, remove the top/rear cover as follows: 1. [. . . ] For further system connection possibilities, please refer to the Flex Users Guide. As noted elsewhere in this manual, NEVER USE A POWER SUPPLY WITH YOUR FPM 42 OTHER THAN THE ONE SUPPLIED FROM THE FACTORY OR AN EXACT REPLACEMENT OBTAINED FROM RANE CORPORATION. This unit's power supply input is designed for an AC supply, delivering 18-24 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 unit and void the warranty (which at two years parts and labor is worth safeguarding, don't you think?). IMPORTANT NOTE CHASSIS GROUNDING Rane Flex Series modules are supplied with either a rear, or a bottom/side mounted ground-lift switch. [. . . ]