Mackie SP2400 Instruction Manual - All - Page 13

The REMOTE connector is wired as follows: Pin 1 = Ground (Shield) Pin 2 = Data + (with +24V DC power) Pin 3 = Data - (with +24V DC power) Note: See the instructions with the remote control for more information. Connecting the RS485 Serial Port This is a 3-pin Phoenix-type connector that follows standard RS485 protocol. Select either a data-grade shielded twisted pair cable or a standard 3-conductor microphone cable for this connection. The RS485 port is wired as follows: Pin 1 = A (non-inverting I/O) Pin 2 = G (Ground) Pin 3 = B (inverting I/O) The SPLinker Sound Palette Control PC application uses the RS485 serial port to connect between a computer and the SP2400. Connect the PC RS485 port to the first SP2400, and then interconnect up to 16 SP2400s in the system using their RS485 connections. Note: It may be necessary to install an RS485 interface card in the PC, or to use an RS232 to RS485 converter. Since the two RS485 ports are internally connected in the SP2400, one can be used as an input from the previous SP2400, and the other as an output to the next SP2400. Up to 16 SP2400s can be connected together with 32 independent zones (each zone assigned a unique AMP ADDRESS), or up to 32 SP2400s in stereo operation (each SP2400 assigned the same AMP ADDRESS on both sides, with one side assigned Master and the other side Slave). Internal Settings Note: There are several settings that can be changed inside the SP2400. These settings should be made prior to installing the SP2400. CAUTION: These servicing instructions are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel. Make sure the power is off and the power cord disconnected before removing the top cover to gain access to the inside of the SP2400. Bus Assign There are two 8-position DIP switches on the Input Board that allow you to assign a Program Input source to the balanced expansion bus. Each Program Input Source has four corresponding switches: Left (+), Left (-), Right (+), and Right (-). Typically, you would move all four switches either down (off) or up (assign to expansion bus). CAUTION: Never assign more than one program source to the same channel on the Expansion Bus. Assigning sources from more than one SP2400 onto the same bus may damage the unit. SP2400 INPUT BOARD ON S1 12345678 ON S2 12345678 To Next SP2400 RS485 RS485 S3 S4 J8 J9 J10 J11 J12 REAR PANEL RS485 Laptop with SPLinker PC Application RS485 RS485 Signal Switch No. Signal Switch No. Input 1 Left (+) S1-1 Input 3 Left (+) S2-1 Input 1 Left (-) S1-2 Input 3 Left (-) S2-2 Input 1 Right (+) S1-3 Input 3 Right (+) S2-3 RS485 Input 1 Right (-) S1-4 Input 3 Right (-) S2-4 Input 2 Left (+) S1-5 Input 4 Left (+) S2-5 Input 2 Left (-) S1-6 Input 4 Left (-) S2-6 Input 2 Right (+) S1-7 Input 4 Right (+) S2-7 Input 2 Right (-) S1-8 Input 4 Right (-) S2-8 Bus Assign Switch Chart SP2400 - 13