Altinex VA6822 manual Frequently Asked Questions, Troubleshooting Guide, Interfaces, Answer

INTERFACES

FREQUENTLY ASKED QUESTIONS			9
No:	Question	Answer
1	When and	The horizontal position control
	why do I	dial enables or disables the
	need to	control of the horizontal
	use the	position of the image. First
	horizontal	adjust the horizontal position
	position	using the monitor or projector
	dial?	control, and then use the
		horizontal position control of
		the VA6822, if needed.
2	What dip-	The first option is to take the
	switch do I	output from RED, GREEN,
	set to	BLUE & CSYNC connectors
	receive	regardless of the dip-switch
	composite	settings. The second option is
	SYNC	to turn OFF the H&V Output
	output?	dip-switch and take the output
		from RED, GREEN, BLUE,
		and HSYNC connectors.
3	When and	The VA6822 does not
	why would	separate the sync signal from
	I use the	green, but if the desired output
	Sync on	is in RGsB format when the
	Green dip-	input signal is RGBS or
	switch,	RGBHV, then turn the sync on
	although	green dip switch to the ON
	the unit	position. The VA6822
	does not	combines Sync on Green if
	separate	this switch is in the ON
	Sync from	position.
	Green?
4	When do I	If the desired output is in
	use the	RGBHV format, then turn ON
	H&V Out	the H&V Out dip-switch. If the
	dip-switch?	H&V Out dip-switch is OFF,
		then composite sync may be
		present on the HSYNC
		connector.

TROUBLESHOOTING GUIDE 10

1.The power LED should turn RED when the correct voltage is applied to the Interface. It should turn GREEN when both power and a valid input signal is applied. If the power LED is absent when the unit is turned ON, return the VA6822 to the factory for repair.

2.Make sure the cables have the correct pin-out and the connection and quality of the cables is good.

3.Make sure that the source and display are scan-rate compatible. The projector should support an appropriate signal format (RGsB, RGBS or RGBHV). Connect the projector directly to a computer with a shorter cable to verify the compatibility of display and source.

4.If the desired output is in RGBS format, then the H&V Output dip-switch is in the OFF position and the Composite SYNC signal is taken from the HSYNC or CSYNC connector. If the display needs an RGBHV signal, then the H&V Output dip-switch should be in the ON position and the sync signal is taken from the HSYNC and VSYNC connectors.

5.If the desired output is RGsB, then the SYNC ON GREEN dip-switch should be ON.

6.If the image bends on top of the screen and RGBHV output is used, then turn on the H&V Output dip-switch.

7.Please make sure that the amplitude level of the input signal is as follows:

a)RED, GREEN, and BLUE channels are less than 1.2Volts

b)HSYNC & VSYNC are less than 5.0 volts

8.Please use only an ALTINEX supplied power cord suitable to the country of usage for proper operation of the VA6822.

9.If problems show up on the display after continuous usage at higher voltage, higher temperature, higher humidity, or at other extreme environmental conditions, please correct those extreme conditions.

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