---
title: "Setting Omnia.9 AM Pre-Emphasis and Low-Pass Filtering"
slug: "setting-omnia9-am-pre-emphasis-and-low-pass-filtering"
updated: 2024-12-17T14:20:10Z
published: 2024-12-17T14:20:10Z
canonical: "docs.telosalliance.com/setting-omnia9-am-pre-emphasis-and-low-pass-filtering"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telosalliance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Setting Omnia.9 AM Pre-Emphasis and Low-Pass Filtering

## Scope

This TelosHelp doc explains where to find and how to set the Omnia.9 AM pre-emphasis and low-pass filter options.

## Description

Find out how to set the Omnia.9's pre-emphasis and filtering options for AM.

## Question/Issue

Q: Where do I find the options for setting the NRSC pre-emphasis and 10kHz low-pass filter in my Omnia.9 running the AM processing core? Also, what other options are available?

## Answer

A: Navigate to System / I/O Options / AM Options.

The options available for pre-emphasis are "NRSC" and "None:

![](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/ba7927db-f73a-44da-9820-8019ecca58e1-o-9-am-preemph.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A53%3A04Z&se=2026-11-12T12%3A53%3A04Z&sr=c&sp=r&sig=32XWtyM29PM%2BsxG0tJomZEtusOq5SR9zPWoGd1qriAo%3D)

There are many options for the low-pass filter ranging from 10kHz (NRSC standard) all the way down to 3 kHz:

![](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/1c3acc0b-b60f-428c-a143-f0c4fa37d0a9-o-9-am-lpf.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A53%3A04Z&se=2026-11-12T12%3A53%3A04Z&sr=c&sp=r&sig=32XWtyM29PM%2BsxG0tJomZEtusOq5SR9zPWoGd1qriAo%3D)

This is the only Omnia AM processor with a LPF that goes down to 3.0kHz.

## Let us know how we can help

If you have further questions on this topic or have ideas about improving this document, please [contact us](https://www.telosalliance.com/support-request).