Terrestrial slope adjustment on multiswitch

[blib]

Hi all, Is there a correct method for adjusting the terrestrial slope on a multiswitch and what does it do? Is it to balance the outputs?

 

[rolfw]

Slope on the terrestrial signal is used to assure that the higher frequencies which attenuate more over long cable runs, arrive at the consumer outlet at roughly the same signal strength as lower ones. The idea is that you set higher frequencies at a higher launch strength and check with a meter on the furthest points to set the correct figure.

Having said that, with digital signals, it doesn't seem to be quite so critical nowadays, as long as the consumer is receiving somewhere between 45db and 60db on all multiplexes their reception should be solid, this is of course assuming that the signal is of acceptable quality in the first place. In fact with current transmissions, signal strengths below 40db can still offer troublefree reception, but best to keep above 42db as a minimum and in the 50s for good measure.

 

[blib]

Slope on the terrestrial signal is used to assure that the higher frequencies which attenuate more over long cable runs, arrive at the consumer outlet at roughly the same signal strength as lower ones. The idea is that you set higher frequencies at a higher launch strength and check with a meter on the furthest points to set the correct figure.

Having said that, with digital signals, it doesn't seem to be quite so critical nowadays, as long as the consumer is receiving somewhere between 45db and 60db on all multiplexes their reception should be solid, this is of course assuming that the signal is of acceptable quality in the first place. In fact with current transmissions, signal strengths below 40db can still offer troublefree reception, but best to keep above 42db as a minimum and in the 50s for good measure.

Thanks for the reply.Does it matter what outputs are connected to what cable runs? Should the shortest cable be connected to output number 1 for example? I am going to use a Triax multiswitch

 

[rolfw]

As far as I know the Triax ports are not padded, so all output the same strength of signal.

 

[blib]

As far as I know the Triax ports are not padded, so all output the same strength of signal.

Thanks

 

[rolfw]

To clarify my last post, on the smaller triax multiswitches all outputs are similar, but on the 24 and 36 output switches, you have adjustable outputs to compensate for large differences in run lengths.