User manual

VGA/Stereo Audio Selection Switcher 4X1
PTN Electronics Limited 3 www.PTN-electronics.com
Press the buttons “Up”, “Down” to control the output volume up/down. (not including the
bass/treble setting)
Press the button “1” for 3 seconds, WVG4A will enter the auto-switching mode. The LED
light of “Auto-SW” will be on. Please check the index”Auto-switching Function” for the
auto-switching principle.
And, pressing the button “1” for another 3 seconds, to quit the auto-switching and return
to the manual-switching mode. The LED light of “Auto-SW” will be off.
Under the “auto-switching” mode, the other front panel buttons can’t be used. But, the
RS232 port is still available for controlling.
5. System Connection
5.1. Interface Connection
① Power indicator. It will keep on red when power on.
② Auto-SW, Auto-switching mode indicator. When press and hold on the button input
1 for 3 seconds, WVG4A then begins auto-switching mode, and the indicator turns
on. If press the button input 1 for 3 seconds again, WVG4A will begins
manual-switching mode, and then the indicator will turn off.
③ Video source selection buttons. You can select the video/audio source by these four
buttons.
④ Volume buttons. “UP” is for volume up, and “DOWN” is for volume down. Bass and
treble are not supported.
⑤ VGA input ports, 4 in total, including video input and stereo audio input.
⑥ VGA output port, including video input and stereo audio input.
⑦ RS232 serial control port, used for RS232 command controlling.
⑧ Power interface, used to access into a DC12V power supply.
Note: Under the “auto-switching” mode, the other front panel buttons can’t be used. But,
LED
indicator of
“Auto-SW”