TROUBLESHOOTING
1.LED Power indicator is not illuminated: Make sure the 15V AC power supply (included) is plugged into a “live” 120 V outlet. Also, check to make sure that the 15V AC power supply’s plug is seated cor- rectly in the power jack of the
2.LED power indicator is illuminated but there is no picture or sound: Verify proper connection of input and output cables. Test the source component for proper operation.
3.Audio signal exhibits an audible low fre- quency hum: Hum is most commonly caused by what is termed a "ground loop". Ground loops cause a constant and audible
60Hz hum on the audio signal. This prob- lem occurs when the ground potential of a particular connected component in the system differs from that of any other con-
SPECIFICATIONS
nected component. It is most commonly caused by incoming Cable TV feeds or con- nected components powered by separate AC power circuits. Correcting the ground potential difference at its source is always the best (but not always the easiest) way to correct a ground loop. Using signal isola- tion transformers offers an easier (but per- haps more costly solution) to this problem.
4.Picture has horizontal bar that moves up or down vertically: This is the effect a ground loop has on a video signal. See Troubleshooting #3 for details on ground loops.
5.Picture and/or sound quality is distorted or dim compared to the original source sig- nal: This is most likely due to signal loss on the audio or video cables connecting the components, especially if they are longer than 15 ft. Verify proper connection and operation of cables and, if necessary, bench test the
I N S T A L L A T I O N & O P E R A T I O N G U I D E
AVDA-3
Audio/Video Distribution Amplifier
INTRODUCTION
The Niles
AUDIO
Input impedance . . . . . . . . . . . . . . . . . . . . . . . .100K Output Impedance . . . . . . . . . . . . . . . . . .100 ohms Frequency Response . . . . . . .flat from DC to >20KHz Signal to Noise Ratio . . . . . . .>80 dB reference 1 volt Crosstalk . . . . . . . . . . . . . . . . . . . . .070 dB at 1 KHz Total Harmonic Distortion . .0.003% 20Hz to 20 KHz Maximum Signal Input . . . . . . . . . . . . . .6 Volts RMS Output Gain . . . . . . . . . . . . . . . . . . . . . . . . . .UNITY
VIDEO
Video Bandwidth . . . . . . . . . . . . . . . . . .DC to 7MHz Maximum Input Signal . . . . . . . .2 volts peak to peak Input Impedance . . . . . . . . . . . . . . . . . . . . .75 ohms Output Impedance . . . . . . . . . . . . . . . . . . .75 ohms Output Gain . . . . . . . . . . . . . . . . . . . . . . . . . .UNITY
Power Requirements . . . . . . . . . . . . .15 VAC 500 mA ESD Protection . . . . . . . . .meets IEC
source component to multiple zone amplifiers and/or RF modulators.
FEATURES AND BENEFITS
■ IC operational amplifiers for clear, stable video images and smooth, accurate sound. |
■ Gold plated RCA connectors for reliable performance. |
■ Audio/video cascade outputs feature with automatic video impedance matching for |
simple system expansion and optimal picture quality. |
■ Space saving, inline power adapter for cleaner installations. |
■ Ideal for residential and commercial installations. |
■ 100% factory tested. |
■ Limited two year parts and labor warranty. |
Niles Audio Corporation
www.nilesaudio.com
12331 S.W. 130 Street Miami, Florida, 33186 Tel: (305)
©1999 Niles Audio Corporation. All rights reserved. Niles, the Niles logo and Blending High Fidelity and Architecture are reg- istered trademarks of Niles Audio Corporation. Because we strive to improve our products, Niles reserves the right to change product specifications without notice. The technical and other information contained herein is not intended to set forth all tech- nical and other specifications of Niles products. Additional information can be obtained
■ Proudly made in the U.S.A. |
B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E ®
