Yamaha IMX644 Owner's Manual - Page 14

Connections ■ [REMOTE] Connector (RS-232C) Connect to this connector when controlling the IMX644 from the IMX644 Manager application or an external AMX/Crestron controller. Use an RS-232C cross cable for connection. Connector Pin Assignments 12345 6789 Pin No. 1 2 3 4 5 6 7 8 9 Signal name Unused RxD TxD DTR GND DSR RTS CTS Unused An external AMX or similar controller can be used to send commands to the IMX644 to recall memories and adjust the level of individual channels. Refer to page 20 for information on the available remote control commands. ■ [GPI] Connector (25-pin D-sub) External GPI (General Purpose Interface) control devices can be connected to this connector to allow input and output of remote control signals. The IMX644 GPI port has eight inputs and eight outputs, plus a dedicated "POWER MONITOR" output that indicates the unit's ON/OFF status. The input pins are normally left open. Shorting an input pin to ground (GND) recalls the corresponding memory number. The output pins are open-collector outputs that deliver a maximum output of +35 volts, with a maximum current capability of 30 mA per port. For the POWER MONITOR outputs, pins 24 and 25 are "closed" (shorted) when the power is ON. The POWER MONITOR COLD pin (pin 25) is internally connected to the GND pins. The IMX644 Manager application can be used for parameter assignment. Connector Pin Assignments 13 12 11 10 9 8 7 6 5 4 3 2 1 25 24 23 22 21 20 19 18 17 16 15 14 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Signal name GND GND INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 INPUT 8 GND GND GND OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 OUTPUT 8 GND GND POWER MONITOR HOT POWER MONITOR COLD 14 IMX644 Owner's Manual