Sharp NP-PH3501QL Installation Manual - NEC - Page 131
Using GPIO Control, Photo-coupler ON/OFF, Function
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7. Appendix GP I/O Connector Inside Projector Ext_GPIN_P Pin No.: 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: 5 mA Absolute Maximum Rating: 23 mA Ext_GPIN_N Pin No.: 24 25 26 27 Resist = 360 Ω Photo-coupler Forward direction voltage: 1.1 V (@5 mA) Using GPIO Control Momentary "ON" pulse enables you to control projector. To enable "ON" pulse, hold it for at least 300 ms. Hold "OFF" for at least 300 ms before "ON". Here is function list to control projector by using GPIO port. Photo-coupler ON/OFF 8-27 7-26 6-25 5-24 OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON Function The following functions apply depending on the combination of input terminals. Power ON Power OFF Shutter CLOSE Shutter OPEN Select HDMI1 Select DisplayPort1 Select SDI1 Select SDI2 Select SDI3 Select SDI4 Select HDBaseT Select SLOT Select HDMI2 Select DisplayPort2 reserved Example for setting the shutter to CLOSE: Input ON to 6-25 and 5-24 while 8-27 and 7-26 are OFF. NOTE: • The operation command coming from GPI/O port will be canceled when the projector is processing other tasks. • Set all other pins than those in use to "OFF". • The operation command is executed upon continuous input of the "ON" pulse for approximately 300 ms. 105
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