Altinex VA6831FC manual FAQ Frequently Asked Questions, Troubleshooting Guide

INTERFACES

FAQ (FREQUENTLY ASKED QUESTIONS) 9

No:	Question	Answer
1.	When and	If you have multiple
	why do I	computers connected to a
	need to use	single display through the
	the	VA6831FC, this control will
	Horizontal	be useful to adjust the
	Position	horizontal position of the
	Adjustment	image for each input. This
	knob?	control knob is only active
		when CH1 Horizontal Delay
		& CH2 Horizontal Delay dip-
		switches are in the OFF
		position for each input.
2.	When and	The VA6831FC does not
	why would I	separate the SYNC signal
	use the	from GREEN. It will
	SYNC ON	combine Sync with Green
	GREEN dip-	Video, when the SYNC ON
	switch,	GREEN switch is in the ON
	although the	position. So, if the desired
	unit does not	output is in RGsB format,
	separate	then put this dip-switch in
	SYNC from	the ON position.
	GREEN?
3.	What is	This function may be
	Horizontal	necessary when interfacing
	Delay and	with a projector/monitor with
	why is this	sensitive sync input, or
	function	particularly with LCD
	needed?	projectors. When the
		Horizontal Delay is in the
		ON position, the output will
		have the same type of Sync
		as the source.
4.	Why do we	If you use the VA6831FC
	have	for a distance of less than
	balanced	500 ft with an output cable,
	input and	there is no need to have
	unbalanced	balanced input and
	output?	balanced output. If
		balanced audio input is fed
		into the VA6831FC
		Interface, the unbalanced
		audio output will provide a
		good signal quality.

TROUBLESHOOTING GUIDE 10

1.The power LED should be ON, when the correct voltage is applied to the Interface.

2.Make sure that the cables have the correct pin- outs and the connection and quality of the cables are good.

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

4.When adjusting the Horizontal position of the image, check to see if the CH1 Horizontal Delay or the CH2 Horizontal Delay switch is in the OFF position.

5.Verify that the position of the INPUT SELECTION SWITCH is in the proper position.

6.Please check the status of the LED next to the Input Selection switch on the front panel and make sure that it is ON for the active input.

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