NEC NC1600C user manual Appendix, Input Connector, Using GPIO Control

6. Appendix

Input Connector

GP I/O Connector

Ext_GPIN_P

Pin No.: 1 2 3 4 5 6 7 8

Voltage applied across the pins of Ext_GPIN_P and

Ext_GPIN_N should be in the range from 3.3 Vdc to 10 Vdc.

Recommended Operating Current:	5mA
Absolute Maximum Rating:	23mA
Ext_GPIN_N
Pin No.: 20 21	22 23	24 25 26 27

Inside Projector

Resist = 390 Ω

Photo-coupler

Forward direction voltage: 1.1V (@5mA)

• Using GPIO Control

Momentary “ON” pulse enables you to control projector. To enable “ON” pulse, hold it for at least 500 ms. Hold “OFF” for at least 500 ms before “ON”. (See page 53)

Here is function list to control projector by using GPIO port.

	Pin No.		Photo-coupler ON/OFF					Function
	1-20				ON			Lamp on
	2-21				ON			Lamp off
	3-22		4-23			3-22		-
	4-23		ON			OFF		Image doused
	3-22		5-24			3-22		-
	5-24		ON			OFF		Image un-doused
	3-22	6-25		5-24		4-23	3-22	-
	4-23	OFF		OFF		OFF	ON	Selects title registered to MACRO 1
	5-24	OFF		OFF		ON	ON	Selects title registered to MACRO 2
	6-25	OFF		ON		OFF	ON	Selects title registered to MACRO 3
		OFF		ON		ON	ON	Selects title registered to MACRO 4
		ON		OFF		OFF	ON	Selects title registered to MACRO 5
		ON		OFF		ON	ON	Selects title registered to MACRO 6
		ON		ON		OFF	ON	Selects title registered to MACRO 7
		ON		ON		ON	ON	Selects title registered to MACRO 8
Example for dousing image:						4-23 is pulsed with keeping 3-22 off.

Example for selecting Macro 2: 3-22 and 4-23 are pulsed simultaneously with keeping 6-25 and 5-24 off.

NOTE

•The operation command coming from GPI/O port will be canceled when the projector is processing other tasks, such as lamp cooling and switching title.

•Set all other pins than those in use to “OFF”.

•The operation command is executed upon continuous input of the “ON” pulse for approximately 200 ms.

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