What is a forward path attenuator

The enginner fiitted it because the levels comming in to your modem were not within spec. Superhub 6db Attenuator Anyone Had It Fitted ? Forward Path Attenuator If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Anybody know what exactly a forward path attenuator does? Forward path attenuator - weakens (attenuates) the high frequencies used for downstream only, without affecting the upstream frequencies.

Return path attenuator - weakens (attenuates) only the low frequencies used for upstream. On the superhub inlet is a 15dB forward path attenuator. On the TiVo box is a 10dB forward path attenuator. I have no idea what these are or what they do, so. My downstream voltage and SNR are always good.

That was with forward path attenuator 6db attached. Lost connection last night and would only reconnect when I removed the forward path attenuator 6db. The link back to the provider is called the return or upstream path (normally QPSK modulated).

Then if any more would have been needed it should be applied at the input to the STB, by either using a Forward Path attenuator or Forward Path Equaliser by what ever value is needed. Sounds more like you had to much signal to the input of your STB. The attenuator works by dropping the incoming signal from the cable fee if the signal coming in is too high you can lose channels so this stops that. It has no effect whatsoever with the talkback, and yes you should use a modded box with talkback cut.

An attenuator by definition ADDs resistance to the line. A broken or loose connector, short center conductor, or cracked. The wideband attenuator is different from the forward path attenuator. The Wideband attenuator increases the power on your upstream it must of been low and there wasn’t a spear tap at cab or something.

CATV attenuators are circuits that reduce the power level of a signal by a certain amount (gain) with little or no reflection. They reduce the output signal with respect to the input and measure. Save forward path attenuator to get e-mail alerts and updates on your eBay Feed. Unfollow forward path attenuator to stop getting updates on your eBay feed. A 10db forward path attenuator supplies about 4db of return path attenuation as well, so no goo take it off.

If your uhf aerial picture is wavey try putting it on the UHF feed. Hope this helps - take it off ! The thingymajig is one of two thing, either a forward path attenuator or just a normal attenuator. Both of them reduce the the downstream power but the normal attenuator also raises the upstream power.

PPC's forward path attenuators provide a fixed level of attenuation within the downstream frequencies without affecting upstream frequencies.

These are typically used in place of fixed value attenuators. Typical applications include attenuation of over amplified signals generated by drop amplifiers at the first input. The ATP is a precision attenuator used to apply a specific dB value across the entire forward band. FPA Series PPC’s forward path attenuators provide a fixed level of attenuation within the downstream frequencies without affecting upstream frequencies.

A Wideband CATV Attenuator ApplicAtion note Introduction In cable TV line amplifiers and set-top applications, a variable attenuator is used in front of an LNA as an AGC. Figure shows a block diagram of a typical transceiver used in a set-top box.