NEC NP-17CU01 - Page 76

76
6. Appendix
Input Connector
GP I/O Connector Inside Projector
Resist = 390 Ω
Photo-coupler
Forward direction voltage: 1.1V (@5mA)
Ext_GPIN_P
Pin No.: 1 2 3 4 5 6 7 8
Ext_GPIN_N
Pin No.: 20 21 23 23 24 25 26 27
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
•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 77)
Here is function list to control projector by using GPIO port.
Pin No. Photo-coupler ON/OFF Function
1-20 ON/OFF 3D L/R timing signal input ON/OFF
2-21 ON/OFF 3D L/R display timing signal input ON/OFF
3-22 - System reserved (used internally)
4-23 - System reserved (used internally)
5-24
6-25
7-26
8-27
8-27 7-26 6-25 5-24 The following functions apply depending on the combination of input terminals.
OFF OFF OFF ON Power ON
OFF OFF ON OFF Power OFF
OFF OFF ON ON Light source ON
OFF ON OFF OFF Light source OFF
OFF ON OFF ON Image douser ON
OFF ON ON OFF Image douser OFF
OFF ON ON ON System reserved (used internally)
ON OFF OFF OFF Selects the title registered to the preset button 1
ON OFF OFF ON Selects the title registered to the preset button 2
ON OFF ON OFF Selects the title registered to the preset button 3
ON OFF ON ON Selects the title registered to the preset button 4
ON ON OFF OFF Selects the title registered to the preset button 5
ON ON OFF ON Selects the title registered to the preset button 6
ON ON ON OFF Selects the title registered to the preset button 7
ON ON ON ON Selects the title registered to the preset button 8
Example for dousing image: Input ON to 5-24 and 7-26 while 6-25 and 8-27 are OFF.
Example for selecting the preset button 2: Input ON to 5-24 and 8-27 while 6-25 and 7-26 are OFF.
NOTE
• The operation command coming from GPI/O port will be canceled when the projector is processing other
tasks, such as light source 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.