Cable-Tronix CTA-30 Руководство по установке - Страница 5

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The CTA-30/1000's Tilt Adjust control should be used to set the appropriate slope per system

specifications.

Note that the Tilt Adjust allows the adjustment of the gain-to-frequency

characteristic of the amplifier.

When making adjustments always apply the following principles:

Input signal levels should ALWAYS exceed the noise figure of the amplifier by 3 to 6

dB.

The primary purpose of tilt (equalization) in a cable TV plant is to compensate for the

slope generated in coaxial cable between the high and low TV frequencies. When

various TV channels, with respect to frequency, are transmitted through coaxial

cable they are subjected to increasing attenuation (loss). Simply put, as the

frequencies of the TV carriers are increased, attenuation loss (dB) increases. A

variable tilt control is installed in this amplifier to compensate for this slope in cable

resulting in a flat frequency response at the output

8. TROUBLESHOOTING

a. Ensure you are using quality multiple shielded cables with quality radial or

compression F-connectors.

b. Ensure the F-connector's center conductor is making solid contact with the CTA-

30/1000's Input and Output ports, and the appropriate RF source and RF distribution

network connectors.

c. When taking measurements it is always best to use an RF spectrum analyzer or

quality signal level meter.

CTA-30/1000's Output port. However, for testing while the amplifier is in service use

the Input Test and Output Test ports for setup and field maintenance. Note that each

Test port is padded down –20 dB and the 20 dB must be added back in when

determining level settings and output.

d. Further

www.northamericancable.com

Cabletronix sales engineers at 1-610-429-1511.

This is a notice to inform you that content passing through this device may contain strong

language or depictions of violence, sex, or substance abuse. This unit contains no parental

Initially, level measurements should be taken from the

troubleshooting

assistance

and

control features. Parental discretion is advised

can

www.cabletronix.com

in addition to support from

found

on-line