AC Power Considerations, Connecting the Logic I/O

Strip the wire back about 1/4" inch, insert the wire as far as it will go into the appropriate hole in the supplied Phoenix-type connector, and tighten down the screw with a small slot-head screwdriver. It is recommended that you use 20 or 22 gauge wire with the Phoenix-type connectors. The OUTPUT connectors are wired as follows:

Pin 1 = Ground (Shield) Pin 2 = Hot (+)

Pin 3 = Cold (–)

Connecting the LOGIC I/O

This is a 25-pin D-Sub connector. There are 10 logic inputs and 10 logic outputs. They are all active-low circuits. Use 22 gauge wire for these connections.

LOGIC OUT

25 13

	GROUND
	N/C
	LOGIC OUT 10
	LOGIC OUT 9
	LOGIC OUT 8
	LOGIC OUT 7
	LOGIC OUT 6
	LOGIC OUT 5
	LOGIC OUT 4
	LOGIC OUT 3
10mA Maximum	LOGIC OUT 2
10mA Maximum

LOGIC OUT 1	14	+5VDC
		1

LOGIC OUTPUT Connection

Note: Pins 12, 13, and 24 are not used at this time. They are reserved for future updates. Do not connect anything to these pins.

GROUND N/C LOGIC OUT 10

LOGIC OUT 9 LOGIC OUT 8 LOGIC OUT 7 LOGIC OUT 6 LOGIC OUT 5 LOGIC OUT 4 LOGIC OUT 3 LOGIC OUT 2 LOGIC OUT 1

LOGIC I/O

25	13	N/C
		N/C
		N/C
		N/C
		LOGIC IN 10
		LOGIC IN 10
		LOGIC IN 9
		LOGIC IN 9
		LOGIC IN 8
		LOGIC IN 8
		LOGIC IN 7
		LOGIC IN 7
		LOGIC IN 6
		LOGIC IN 6
		LOGIC IN 5
		LOGIC IN 5
		LOGIC IN 4
		LOGIC IN 4
		LOGIC IN 3
		LOGIC IN 3
		LOGIC IN 2
		LOGIC IN 2
		LOGIC IN 1
		LOGIC IN 1

14+5VDC

Connecting the REMOTE BUS

This is a 3-pin Phoenix-type connector specifically for connecting the optional remote control peripherals. Use a high-quality three-conductor shielded cable to make this connection, such as Belden 8451, 9451, or equivalent. The lower the nominal capacitance of the wire, the more distance you can have between the remote control and the DX8 before suffering transmission losses.

LOGIC I/O Pinout Connection

The logic inputs are active-low with internal pull- up resistors connected to +5 VDC. Use a normally open switch connected between the logic input and ground (pin 25). When the switch is closed, the logic input is active. Depending on the function assigned to the logic input, a toggle switch or a momentary switch may be used.

LOGIC INPUT

GROUND	25	13	N/C
GROUND	25		N/C
			N/C
			N/C
			LOGIC IN 10
			LOGIC IN 10
			LOGIC IN 9
			LOGIC IN 9
			LOGIC IN 8
			LOGIC IN 8
			LOGIC IN 7
			LOGIC IN 7
			LOGIC IN 6
			LOGIC IN 6
			LOGIC IN 5
			LOGIC IN 5
			LOGIC IN 4
			LOGIC IN 4
			LOGIC IN 3
			LOGIC IN 3
			LOGIC IN 2
			LOGIC IN 2

	14		LOGIC IN 1
	14	1
		1

LOGIC INPUT Connection

The logic outputs are active-low, open-collector outputs with internal pull-up resistors. Connect the indicator or activation circuit between the logic output and +5 VDC (pin 1). When the output is active, the output is 0 VDC. The logic outputs can supply up to 10 mA of current each.

Strip the wire back about 1/4" inch, insert the wire as far as it will go into the appropriate hole in the supplied Phoenix-type connector, and tighten down the screw with a small slot-head screwdriver. It is recommended that you use 18, 20, 22, or 24 gauge wire for the remote control connections, depending on the distance between the DX8 and the remotes.

The REMOTE BUS connector is wired as follows: Pin 1 = Ground (Shield)

Pin 2 = Data + (with +24 VDC power) Pin 3 = Data – (with +24 VDC power)

Note: See the instructions with the remote control for more information.

AC POWER CONSIDERATIONS

The DX8 can accept an AC voltage ranging from 90 V to 240 V without having to reconfigure the primary wiring, due to the sophisticated design of the switching power supply. Each DX8 draws an average of 1 amp of AC line current at 120 VAC.

Warning: Always use a 3-conductor AC power cord with a safety ground connection. Never remove the ground pin or attempt to bypass it. This is very dangerous.

DX8 – 13