Altinex Frequently Asked Questions, Troubleshooting Guide, DA1226AT?, Distribution Amplifiers

DISTRIBUTION AMPLIFIERS

FREQUENTLY ASKED QUESTIONS 9

can pass through

refreshed. Offering a minimum video bandwidth of

No: Question

1	How many
	feet of cable
	can I use
	with the
	DA1226AT?

Answer

The outputs of the DA1226AT allow signals to be driven through 10 feet or more of cable depending on cable quality and the source signal resolution.

DA1226AT?

350 MHz and typical bandwidth close 450 MHz, the DA1226AT allows very high resolution video signals (up to 1600x1200) to pass without affecting image quality.

2	Does the
	DA1226AT
	offer
	buffered
	outputs?
3	What is
	meant by
	buffered
	output?

4Which type of format signal may I pass through the DA1226AT?

5Can I use CAT-5 cables instead of coaxial cables?

6What is the maximum resolution of input video signal that

The DA1226AT offers all six as individually buffered outputs.

Buffered output means that the output signal is isolated from the input signal. The loaded output does not affect the input, or any other output on the device. A buffered output may vary in terms of the gain or peaking adjustments made to the video signal.

The DA1226AT can pass RGBHV, RGBS, RGsB, Component Video, S-Vide, and Composite Video by using appropriate channels. Video sources may be passed through red, green, and blue channels as well as the horizontal and vertical sync channels.

You can’t use cat 5 cable instead of coaxial cable, because you will loose quality of the receiving signal. Since there is no isolation of the signal in each wire, the signals will interfere with each other, so CAT-5 is not recommended at all.

Resolution format describes the number of pixels and lines in a given video image, as well as the rate at which each frame is redrawn or

TROUBLESHOOTING GUIDE 10

∙Please make sure that the input amplitude of the analog signal is less than 1.5V.

∙Please make sure that sync levels at the TTL level are between 1.4 Vp-p and 5 Vp-p.

∙Please make sure that the highest quality of cables is used. We recommend Altinex made cables for best results.

∙If a problem arises after continuous usage at a higher voltage, higher temperature, higher humidity, or at other extreme environmental conditions, please correct the problem. NOTE: The sync pulse voltage must be at least 1.4 V for proper operation of the distribution amplifier. If lover voltage is used, contact Altinex for additional information.

∙If there is no image on the display, make sure that the source has a compatible refresh rate and resolution with the display by a direct connector of the source and display.

∙If the image quality is poor, then check the input of the cable so that the source is capable of driving signals to the DA1226AT through the length of the cable.

∙If you are using a HD-15 to 5-BNC cable to connect a computer directly to the DA1226AT and do not see the picture or display use an interface to make the video signal compatible to display.

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