Omnia Audio Omnia.Multicast Operating Manual

Omnia.Multicast

Audio Processor/Codec Provisioner

Installation and Operation Manual

Version 2.1a / April 2006

v3.04.04 Release Software and Higher

A Telos Company

Omnia ● 2101 Superior Avenue Cleveland, Ohio 44114 USA

TEL: [phone] ● FAX: [phone] ● Email:

Omnia Europe ● Johannistraβe 6 D-85354 Freising Germany

TEL: [phone] ● FAX [phone] ● Email: [e-mail] www.omniaaudio.com

[e-mail] www.omniaaudio.com

GREETINGS!

Welcome to our latest offering, Omnia.Multicast. The heritage of this processor is based upon the growth
of codec based transmission systems. The emergence of Multicast as part of the HD Radio
with the bevy of additional coded services has created a demand for a processor of this type.
Omnia.Multicast defines a new category of processor, one that provides dynamics control and provisions
the signal for use with a codec.

Just about every medium now employs some form of coded audio. Therefore it’s vitally important to
provision the codec properly to ensure that the best audio quality possible traverses through the system. In
many ways, this is not much different than conventional transmission processing, as those devices are
designed specifically for their specific mediums. The same applies here, except Omnia.Multicast explores a
new realm of signal conditioning as it utilizes Sensus Technology. This innovative new tech, developed by
Omnia engineers, takes audio processing to another level, as our crew found another way to raise the
bar…yet again!

Omnia.Multicast is a fully digital system for all forms of digital radio, internet webcasters, podcasters,
cellcasters and whatever other form of encoded audio “casters” are out there. It is optimized for the unique
demands of encoded audio. A simple design, no not really. Simple to use…YES!

Omnia.Multicast’s flexibility is built-into the design. Instead of keeping the processing algorithms on a set
of EPROMs or proprietary potted modules, the system’s DSP (Digital Signal Processing) resources are
entirely configured through software contained on a plug-in PC Card (PCMCIA-type). Even fundamental
rearrangements of the system architecture can be easily accomplished in the field by plugging in a new PC
card or, by using the free downloadable Windows-based remote control application, through local serial
RS-232 connection or remotely through the optional plug-in modem card or optional Ethernet network
interface.

Omnia.Multicast, continuing the promise of digital…delivered.

Here’s to another step in a new frontier,

R

system, along

Frank Foti

SAFETY INSTRUCTIONS

1. Read All Instructions. All safety and
operating instructions must be read before operating
the product.

2. Retain All Instructions. All safety and
operating instructions must be retained for future
reference.

3. Heed All Warnings. All warnings on the
product and those listed in the operating instructions
must be adhered to.

4. Follow All Instructions. All operating and
product usage instructions must be followed.

5. Heat. This product must be situated away
from any heat sources such as radiators, heat registers,
stoves, or other products (including power amplifiers)
that produce heat.

6. Ventilation. Slots and openings in the
product are provided for ventilation. They ensure
reliable operation of the product, keeping it from
overheating. These openings must not be blocked nor
covered during operation. This product should not be
placed into a rack unless proper ventilation is provided
through following the manufacturer’s recommended
installation procedures.

7. Water and Moisture. Do not use this
product near water—for example; near a bath tub,
wash bowl, kitchen sink or laundry tub; in a wet
basement; or near a swimming pool or the like.

8. Attachments. Do not use any attachments
not recommended by the product manufacturer as they
may cause hazards.

9. Power Sources. This product must be
operated from the type of power source indicated on
the marking label and in the installation instructions. If
you are not sure of the type of power supplied to your
facility, consult your local power company.

10. Grounding and Polarization. This product is
equipped with a polarized AC plug with integral safety
ground pin. Do not defeat the safety ground in any
manner.

11. Power Cord Protection. Power supply cords
must be routed so that they are not likely to be walked
on nor pinched by items placed upon or against them.
Pay particular attention to the cords at AC wall plugs
and convenience receptacles, and at the point where
the cord plugs into the product.

12. Lightning. For added protection for this
product during a lightning storm, or when it is left
unattended and unused for long periods of time,
unplug it from the AC wall outlet. This will prevent
damage to the product due to lightning and power line
surges.

13. Overloading. Do not overload AC wall
outlets, extension cords, or integral convenience
outlets as this can result in a fire or electric shock
hazard.

14. Object and Liquid Entry. Never push
objects of any kind into this product through openings
as they may touch dangerous voltage points or short­out parts that could result in a fire or electric shock.
Never spill liquid of any kind on the product.

15. Accessories. Do not place this product on
an unstable cart, stand, tripod, bracket, or table. The
product may fall, causing serious damage to a child or
adult, and serious damage to the product. Any
mounting of the product needs to follow
manufacturer’s installation instructions.

16. A Product and Cart Combination should be
moved with care. Quick stops, excessive force, and
uneven surfaces may cause the product and the cart
combination to overturn.

17. Servicing. Refer all servicing to qualified
servicing personnel.

18. Damage Requiring Service. Unplug this
product from the wall AC outlet and refer servicing to
qualified service personnel under the following
conditions:
a. When the AC cord or plug is damaged.
b. If liquid has been spilled or objects have
fallen into the product.
c. If the product has been exposed to rain or
water.
d. If the product does not operate normally
(following operating instructions).
e. If the product has been dropped or damaged
in any way.
f. When the product exhibits a distinct change
in performance. This indicates a need for
service.

19. Replacement Parts. When replacement parts
are required, be sure the service technician has used
replacement parts specified by the manufacturer or
that have the same characteristics as the original parts.
Unauthorized substitutions may result in fire, electric
shock, or other hazards.

20. Safety Check. Upon completion of any
repairs to this product, ask the service technician to
perform safety checks to determine that the product is
in proper operating condition.

21. Cleaning. Do not use liquid cleaners or
aerosol cleaners. Use only a damp cloth for cleaning.

HAZARD / WARNING LABELS

The Exclamation Point

symbol, within an
equilateral triangle, alerts
the user to the presence
of important operating
and maintenance
(servicing) instructions in
product literature and
instruction manuals. manuals.

The Lightning Flash With

Arrowhead symbol, within an

equilateral triangle, alerts the

user to the presence of

uninsulated dangerous voltage

within the product's enclosure

that may be of sufficient

magnitude to constitute a risk

of electric shock.

4

WARNING -- This equipment generates, uses, and can radiate radio frequency energy. If not installed

and used in accordance with the instructions in this manual it may cause interference to radio
communications. It has been tested and found to comply with the limits for a Class A computing device
(pursuant to subpart J of Part 15 FCC Rules), designed to provide reasonable protection against such
interference when operated in a commercial environment. Operation of this equipment in a residential
area is likely to cause interference, at which case, the user, at his own expense, will be required to take
whatever measures may be required to correct the interference.

See the following page for additional information.
CANADA WARNING – This digital apparatus does not exceed the Class A limits for radio noise

emissions set out in the Radio Interference Regulations of the Canadian Department of Communications.
Le present appareil numerique n'emet pas de bruits radioelectri ques depassant les limits applicables aux
brouillage radioelectrique edicte par le ministere des Communications de Can ada.

CE CONFORMANCE – This device complies with the requirements of the EEC Council Directives:
93/68/EEC (CE Marking); 73/23/EEC (Safety – low voltage directive); 89/336/EEC (electromagnetic
compatibility). Conformity is declared to those standards: EN50081-1, EN50082-1.

LITHIUM BATTERY CAUTION -- Danger of explosion if the internal battery is replaced
incorrectly. Replace only with same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer's instructions.

USE OF SHIELDED CABLING -- To conform to the CE requirements for High Frequency
radiation, shielded cables must be used for all audio and data connections. For analog and
digital connections, the cable shield MUST be connected to the XLR-type connector shell,
which is at chassis ground potential!

5

Manual Update Notification

Due to the dynamic nature of audio processing products, this manual and all future manuals, will
be considered as 'preliminary documentation'.

Audio Processing is an art form that we take very seriously. As part of our dedication to this
science, we will continue to update both the product and its documentation based on continued
research, field experience and valued customer input.

We strongly encourage our customers to visit our Omnia website for product enhancement
announcements, software updates, manual updates, and customer care bulletins.

The following URL listing has been included for your update convenience:

Manual Updates

http://www.omniaaudio.com/support/manuals.htm

Installation Tips

Tech Bulletins and Papers

Tech Support – Software Upgrades

http://www.omniaaudio.com/tech/tips.htm

http://www.omniaaudio.com/tech/

http://www.omniaaudio.com/support/updates.htm

Thank you for selecting the incredible Omnia.Multicast Audio Processor. Your continued
patronage and support are appreciated.

Sincerely,

Team Omnia

6

SPECIFICATIONS

Note: All measurements made with the supplied “No Process” preset, which is available in the Preset Submenu.

System

Signal to Noise: The measured noise floor will depend upon the settings of the Input and
Output Gain controls. The Omnia’s noise floor is primarily governed by
the dynamic range of the 24-bit Crystal Semiconductor CS5360 A/D Converter,
which has a specified Dynamic Range of 105 dB. The dynamic range of
the Omnia.Multicast digital signal processing chain is 144 dB. Typical SNR using
the “No Process” preset is greater than –80dB referenced to 100%
modulation.

Distortion: No greater than 0.01% THD 20 Hz -- 20 kHz bandwidth.

Analog I/O

Analog Audio Input: Configuration: Left/Right Discrete Stereo. Electronically balanced, floating and

symmetrical.
Input impedance: 10k ohms resistive, electronically balanced.
Maximum Input Level: +24 dBu.
Nominal Input Level: +4 dBu when the Input Level Control is set to 0.0 dB.

A/D Conversion: Crystal Semiconductor CS5360/5361, 24 bit 128x over-sampled delta sigma
converter with linear-phase anti-aliasing filter. Pre-ADC anti-alias filter,
with high-pass filter at <10 Hz.

Connectors: Two EMI-suppressed XLR female. Pin 1 chassis ground, and Pin 2 is “hot”.
Analog Audio Output: Configuration: Left/Right Discrete Stereo. Electronically balanced,

Source Impedance: 20 ohms, electronically balanced and floating.
Load Impedance: 600 ohms or greater, balanced or unbalanced.
Output Level (100% peak modulation): Adjustable from -2 dBu to +22
dBu peak, into 600 ohms or greater load, software-adjustable.

D/A Conversion: Crystal Semiconductor CS4390/4391 24 bit, 128x over-sampled.
Connectors: Two, EMI-suppressed XLR-male. Pin 1 chassis ground, Pin 2 “Hot”.

Digital I/O

Digital Audio Input: Configuration: Stereo per AES/EBU standard, CS8420 Digital Audio
Transceiver with 24 bit resolution, software selection of stereo, mono
from left, mono from right or mono from sum. Automatically accepts
and locks to input sample rates between 32kHz and 50kHz.

Connector: XLR-female, EMI-suppressed. Pin 1 chassis ground, pins 2 and 3
transformer isolated, balanced, and floating – AES3 standard 110 ohm
impedance.

7

Digital Audio Output: Stereo per AES3 standard.

Output sample rate automatically synchronizes to external reference input with

fallback to 48kHz.
Connector: XLR-male, EMI-suppressed. Pin 1 chassis ground, pins 2
and 3 transformer isolated, balanced, and floating. Standard AES3
specified 110 ohm source impedance.
Digital Output Level: -22.0 to 0.0 dBFS software adjustable.

Remote Control

Remote Control
Methods: Configuration: Modem, Direct Serial, or 10/100BaseTX Ethernet.

Modem: Optional PCMCIA modem with pop-out X-jack connector or any
Hayes command set compatible external modem.
Direct Serial: Standard RS-232, no hardware handshaking employed.
Baud rates of 9,600, 19,200, and 57,600 supported.
TCP/IP Ethernet: Optional interface emulates a telnet session on port 23.
Connectors: RS-232 port, EMI-suppressed DB-25 female connector.
Industry standard EMI suppressed RJ-45 connector for Ethernet.

Remote Interface: Configuration: Eight (8) inputs, RS-232 level-compatible.
Software sensing of both 'go-high' and 'go-low' transitions.
Inputs are protected to +/- 15 VDC.
Connector: EMI suppressed DE-9 male.
Control: User-programmable using built-in Trigger Script feature in
Omnia.Multicast Remote Control software. Virtually any parameter of
Omnia may be programmed to change through this interface feature.

General

Power Requirements: Voltage: 100-250 VAC, 50/60/440 Hz., < 55VA

Connector: EMI suppressed IEC male. Detachable 3-wire power cords supplied

for US and European use.
Internal Power Supply: Overvoltage and short circuit protected. Meets EN55022, EN55011

Level B Conducted Emissions. EN61000-4-2, -3, -4, -5, -6 level 3
immunity compliant. Full international safety approval. CE marked.

Environmental: Operating Temperature: 32 to 122 degrees F / 0 degrees to 50 degrees C

for all operating voltage ranges.
Humidity: 0-95% RH, non-condensing.

Dimensions: 19” wide x 3.5” high x 16.25” deep (48.3cm wide x 8.9 cm high x

41.3 cm deep) including connectors. Unit requires two EIA rack
spaces for proper mounting.

Shipping Weight: 26 lbs. / 11.8 kg

Telos/Omnia Research and Development is constantly working to improve the quality of our products.
Actual specifications are subject to change or improvement without notice.

8

Table of Contents

HAZARD / WARNING LABELS 4
Manual Update Notification 6
SPECIFICATIONS 7
Quick-Start Setup Guide 10
Chapter 1: Installation 13

Pre-Installation Tasks.............................13

Installation & Connections ....................15

Powering Up ..........................................18

Chapter 2: The User Interface 19

Using the Jog Wheel ..............................19

Main Menu Orientation..........................20

User Interface Tutorial...........................20

User Interface Concepts.........................22

Bargraph Display Metering Screens ......23

Menu Descriptions.................................24

Chapter 3: Processing Overview 29

Omnia.Multicast and Audio Processing 29

Chapter 4: Omnia.Multicast 31

Omnia.Multicast Connections................31

Processing Worksheet 34

Chapter 5: Editing Presets 34

Preset Editing Overview ........................34

The Processing Display..........................35

Parameter Editing...................................36

Saving, Renaming and Deleting Presets 39

Getting The Sound You Want................40

Chapter 6: Remote Control 44

Software Installation ..............................44

Setting Up and Configuring Omnia
Remote Control

Using the Remote Control .....................51

Using a Terminal Program and Direct
Connection

Trigger Interface and Script Editor........53

Chapter 7: Troubleshooting 60

Omnia Messages ....................................61

Diagnostic and Error Messages 64

Electrical and mechanical safety note! ..63

Narrowing down problems ....................64

Obtaining Service...................................65

WARRANTY 66

.............................................52

......................................45

9

.

.Multicast

x3

Sensus Technology: Audio Processing

Overview

Digital audio processing, thus far, has been a numeric replication of tried-n-true analog methods. Sure, progress

was achieved as DSP made it possible to accomplish better algorithms that were either too difficult or expensive

in analog. Still, digital audio processors have not yet migrated from the same conceptual dimension that

dynamics processing has known…until now!

Sensus technology takes dynamics processing into a new realm. Instead of two-dimensional static architecture

and functionality, Sensus adds a third domain where it modifies processing algorithms, architecture, and

functions based upon conditions that are understood by the system. Simply stated, Sensus has the ability to

sense what must be done to a signal, and then “rearrange the furniture” to accomplish its goal. There are

numerous derivatives to this innovative tech, and it can be scaled to many different applications. Following is a

discussion of how this method is applied to a processor used in a coded audio environment.

Codec Provisioning

The codec is now a way of life in the world of audio and broadcasting. Digital broadcasting (HDTV, HD-

R

, DAB, DRM), podcasting, webcasting, cellcasting, and downloadable music files all employ some form

Radio

of codec. This presents a huge challenge to an audio processor. Traditional dynamics processors are designed to

fulfill the requirements of a medium where the functions are static, such as precision peak control and

bandwidth limiting for broadcasting, or the normalization needed for recording and mastering. Each of these

functions is a known static entity. They are singular, one-dimensional functions where the target is known and

the audio processor is designed to accommodate this.

The audio codec, on the other hand, is a moving target. No two codecs are alike, or sound the same. They vary

in sonic quality based upon bitrate…AND…more importantly they vary within the same architecture based

upon audio content! Here is where conventional audio processors fall short when used in a coding environment

and the Sensus tech comes into play.

Until now, dynamics processing has been able to address some of the hurdles and artifacts generated by audio

coding. The codec has the ability to adapt and modify its algorithm internally, in order to provide maximum

throughput, and this alters the sonic artifacts created by the coding process. Unless an audio processor can do

the same, it will hit and miss regarding how well it provisions the audio to avoid artifacts. Sometimes coded

audio sounds acceptable, and sometimes it doesn’t. Conventional processors play games with HF limiters and

static low pass filtering to minimize coding anomalies. In order to condition audio in hopes of artifact

avoidance, the processing will over-compensate audio bandwidth and dynamics. The result is dull, lifeless

sounding audio that still contains audible gremlins.

10

Omnia.Multicast

The advent of HD RadioR has introduced the capability to broadcast multiple content streams within the 96kbps

digital channel. To facilitate multicast requires the use of lower bitrate audio coding. The broadcaster can

choose the bitrate for each content channel, as well as the number of desired channels, with a maximum limit of

seven. Therefore it is possible that extremely low bitrate audio channels will exist, and those will require

dynamics processing capable of consistent sound quality that yields low, or no sonic artifacts.

Omnia.Multicast is a processor designed for coded audio, especially low bitrate signals. An innovative codec

provisioning algorithm, using Sensus Technology, yields consistent audio quality that contains little, if any,

coding artifacts. Yet, audio quality does not suffer the dull or muffled quality due to extreme bandwidth

reduction that would normally be employed to mask codec “nasties.”

The Sensus algorithm detects troublesome content for a codec, modifies the processor’s architecture, and then

makes the appropriate changes. These could be dynamics control, bandwidth adjustment, a combination of both,

or the elimination of an unnecessary function. The result is consistent quality through the coded transmission

system, even at low bitrates; i.e. 18kbps – 21kbps. Voice by example, especially without any other

accompaniment, is very difficult to code at low bitrates without the quality and intelligibility suffering.

Omnia.Multicast generates clean, smooth, intelligible, and clear audio that is consistent sounding no matter

what the content is.

11

Omnia.Multicast Quick-Start Setup Guide

g

We know that you're probably in a hurry to get on the air with your new Omnia.Multicast. If you have technical
expertise and previous knowledge of audio processor fundamentals, using the following Eight-Point Quick-Start
procedure will get you up and running as quickly as possible. Please refer to the remainder of the Operating
Guide for additional information.

Refer to the following drawing for the location of the various connectors associated with the installation:

Omnia.Multicast Rear Panel View

1. Insert the supplied PCMCIA memory card into the top card slot on the rear panel with the large Omnia label

facing up and the version number sticker facing down. DO NOT FORCE!
until the black release button, to the right of the card, pops out about ½” [12.70 mm]. This indicates that the
card is properly inserted in the PCMCIA slot.

2. Install the Omnia.Multicast in the equipment rack using at least two rack screws. If only two screws are

used, they MUST be in the bottom holes of the rack ears!

3. Connect AC power to the unit, and turn on power using the rear-panel power switch.

4. Connect the audio inputs that are appropriate for your installation and provide normal program audio to the

Omnia.Multicast.

5. Navigate to the Input & Output menu by rotating the jog-wheel until Input & Output is highlighted and

then “click” (push in on the jog-wheel) to enter that menu. Navigate to Input Source, click, and select either
the Analog or AES/EBU input. Press the front panel push-button once to switch to the metering screen. If your
audio source is providing an audio feed you should see meter activity on the I/O and Process meters. Rotating
the jog-wheel switches between the I/O and Process bargraph screens. Turn it left for the I/O meters and right
for the Processing gain-reduction bargraphs.

6. Turn the Jog-Wheel to the left to display the I/O metering screen. Observe the input meters (L In and R In)

and adjust the controls in the Input Levels menu until the input meters are peaking up to about -15dB (or a little
higher) with normal program audio. Each press of the front panel push-button will switch between the selected
metering screen and the menu screen where the input level controls are.

7. Connect the audio outputs that are appropriate for your installation. For use in an HD Radio

“EXT SYNC” connector must be provided with an AES-11 (DARS/”AES black”) reference signal at a 44.1kHz
rate that is synchronous to the HD exciter 10MHz master clock. This may be obtained from the exciter directly,
or from an auxiliary GPS receiver.

NOTE: When a 44.1 kHz di

be present on the External Sync input jack or the output sample rate will be 48 kHz.

8. If you are using the Analog or Digital XLR audio outputs, navigate to the Input & Output Menu and adjust
the controls in the Output Levels menu to the correct peak level for the equipment that follows the
Omnia.Multicast.

You’re now ready to go!

ital output sample rate is needed, an external 44.1 kHz AES/EBU signal must

Gently press the card into the slot

R

system, the

12

Chapter 1: Installation

Even though we believe the Omnia.Multicast is the easiest processor to install in its class, please take a few

minutes to read through this chapter before proceeding with the installation.

Pre-Installation Tasks

This section offers common procedures for installing Omnia.Multicast.

Omnia.Multicast Components

By now, you’ve unpacked the shipping carton to at least gain access to this manual. Be sure to inspect the

Omnia.Multicast and shipping carton for any shipping damage, which must be reported to your carrier for any

claims.

The Omnia.Multicast shipping box includes the following components:

• Omnia.Multicast processor (containing the DSP hardware)

• Omnia.Multicast PCMCIA card (holding the DSP software)

• Omnia.Multicast Operating Manual

• Warranty Registration Card (fill it out and fax it or return it)

• IEC Power Cord

PC Card and Optional Modem Installation

Before installing your Omnia.Multicast, or even plugging in the power cord, make sure the Omnia.Multicast PC

Memory Card and optional Modem Card (if ordered) are installed into the correct card slots on the back panel

and are fully seated. Installation or removal of cards must be done with the power off unless directed otherwise.

The PC Memory Card is inserted into the top card slot with the larger Omnia label facing up, and the version
sticker facing down. The optional Modem Card is inserted into the bottom card slot below the Omnia PC Card.

Both the PC Card and the Modem Card are keyed to prevent improper insertion. DO NOT FORCE!

press the cards into the slots until the black release button, to the right of the card, pops out about 1/2" [12.70

mm]. This indicates the card is properly seated in the PCMCIA slot.

Gently

13

Important Note 1: The PC Card used in the Omnia.Multicast is not a generic PCMCIA cards that can be

bought in any local computer store. They are cards that are specified by Omnia specifically for this product. If

you need a backup card, please contact Omnia Customer Support to purchase an additional card. Inserting a

card of unknown origin risks damaging the Omnia or the cards, and doing so will void your warranty!

Important Note 2: If you wish to operate the Omnia.Multicast using a PCMCIA type modem, you must use the

optional modem card from Omnia. No other modem cards are approved for use at this time. We cannot assume

correct operation of any other modem card, nor can we provide support for it. Typically any external Hayes

compatible modem may be connected to the rear-panel serial port. See chapter 6 for more details on the Modem

and the Remote Control Software.

Note: The rear panel PCMCIA Memory Card must remain in the top slot unless you are prompted by the

system to remove it. Randomly removing the PC Card without system instruction may cause unpredictable

operation and PC Card data damage.

AC Environment

Since the Omnia.Multicast is microcomputer-based, it requires the same clean AC environment as any computer

system. Even though the unit has internal AC input transient suppression, we recommend that transient

suppressors/voltage regulation or an Uninterruptible Power Supply (UPS) be employed as well. This is

especially recommended when installing the processor at a transmitter site. (As is proper grounding) Heavy

transient demands on power lines, from normal switching to lightning strikes, have been known to wreak havoc

with data in computer systems. This is another reason we ask that you give your AC environment thorough

consideration before plugging in your unit. For more information on surge suppression and proper grounding

techniques, please see the tech-talk paper “The Ins and Outs of Surge Suppression” on the Telos website here:

http://www.telos-systems.com/techtalk/surge.htm

14

Installation & Connections

Throughout this section reference is made to “software parameters.” These are part of the User Interface, which

is covered in Chapter 2.

Omnia.Multicast Rack Mounting Requirements

Rack Mounting

The Omnia.Multicast requires 2RU (3.50" [89 mm]) of rack space. Rack mount the unit using four rack screws.

It is preferred to leave at least one rack unit of empty space above the Omnia.Multicast to enhance ventilation

and to prolong component life. Install a 1RU (1.75") vented or solid panel to fill this space. It is recommended

that another 1RU blank panel be installed below the unit for the same reason, if rack space is not at a premium.

Rear Panel Connections

Omnia.Multicast Back Panel Connections

AC Connection (IEC)

The Omnia.Multicast uses a universal power entry module with integral AC switch just above the IEC power

cord receptacle. It can operate on AC mains voltages from 100 to 240 VAC, 50/60 Hz since a self-adjusting

switching power supply is used. In the USA, plug the supplied AC power cord into the unit and then into an

isolated ground AC outlet. Outside of the USA you must obtain an appropriate local IEC power cord.

Audio Inputs (Female XLR)

Balanced XLR-type connectors are used to input both analog and AES-3 digital audio. Even though both analog

and digital cables can be connected, only one input can be set active. Input selection is done through the Input
Source software parameter in the Input & Output menu. The Analog input is the factory default selection.

The stereo analog inputs are designed for standard +4 dBu balanced signals. The digital AES-3 input accepts

any sampling rate between 32kHz and 50kHz. No user adjustment is necessary since a sample rate converter is
built into the unit. Individual channel gain and level setting for both analog and digital is done using the Input
& Output menu’s software parameter settings.

15

A Note About Relative Phase: If the relative phase of your installation including the Omnia.Multicast differs

from your existing system, it could cause your announcers to feel they sound “weird” in their headphones. If

this happens, then the relative phase of the processor is 180 degrees from what your talent are used to. To

remedy this, you can reverse the polarity to both of the two analog inputs (is pin 2 or pin 3 hot!?), but it’s a lot

easier to accomplish this function by changing the Input Phase software parameter setting located under Input

Levels in the Input & Output menu.

Discrete Audio Outputs—Analog & Digital (Male XLR)

Individual Left and Right analog outputs are available on two male XLR jacks, as is a single stereo AES-3

output. The digital output is produced directly from the output of the final processing section. The sample rate

automatically synchronizes to any reference rate between 32kHz and 48kHz that is provided on the “EXT

SYNC” input in AES-11 (DARS / “AES black”) format. The sample rate will fall back to an internally

generated 48kHz if external sync is lost. In an HD Radio

R

system, this will make the loss of sync with the

exciter immediately and noticeably audible. The analog output is derived from a D/A converter driven from the

digital output.

Note: Both the analog and digital AES-3 outputs are always active and can be used simultaneously.

Digital Audio EXT Sync Input (Female XLR)

This input accepts an AES-11 (DARS / “AES black”) sample rate reference signal (if an AES-11 signal is not

available, ordinary AES-3 digital audio works as well, however careful layout of digital audio timing signals is

always recommended). The digital audio output will automatically lock to any valid sample rate between

32kHz and 48kHz when it is provided via this connector. If no valid signal is available, the output sample rate

will fall back to an internally generated 48kHz.

RS-232 Connection (DB-25F)

This connector serves two important purposes: It can be used for a local, bi-directional computer connection

with Omnia.Multicast Remote Control, or it can be used for troubleshooting and error code resolution. In the

former case, Omnia.Multicast Remote Control software is utilized. In the latter, any terminal emulation program

can be used. In either case, you must use a standard, straight-through serial cable (not a null modem cable)

between the RS-232 connector and the serial port connector on the computer. Typically, a DB25 male to DB-9

or DB-25 female cable will be used, with the DB-25 male end of the cable attached to the Omnia.Multicast.

The Remote Control application is available as a free download from the

covered in detail in Chapter 6.

www.omniaaudio.com website and is

16

Interface Connection (DB-9M)

The 9-pin male Interface connector uses eight pins as “trigger” inputs with the ninth pin as the ground

reference. The trigger inputs can be used to dynamically alter the Omnia.Multicast’s operational attributes in

response to logic signal transitions. The Omnia.Multicast responds uniquely on each trigger input to both go-

high and go-low transitions. With eight inputs, and two possible triggers (logic go-high and go-low), sixteen

unique “trigger scripts” can be written (using the Omnia.Multicast Remote software) to control the

Omnia.Multicast in response to these trigger input logic transitions. The Trigger Script Interface Editor is

covered in detail in Chapter 6.

The Pinout of the Omnia.Multicast rear-panel DB-9 Interface connector is as follows:

PIN 1 activates Trigger Script 1 PIN 6 activates Trigger Script 2

PIN 2 activates Trigger Script 3 PIN 7 activates Trigger Script 4

PIN 3 activates Trigger Script 8 PIN 8 activates Trigger Script 7

PIN 4 activates Trigger Script 6 PIN 9 activates Trigger Script 5

PIN 5 is connected to ground

Ethernet Connection (Optional)

The Remote Control link for your Omnia.Multicast over 10BaseT and 100BaseT networks can be utilized if the

Ethernet Interface hardware option is installed. (Part # 2091-00013) Installation instructions are provided with

the hardware. The setup and operation of the Remote Control software application is covered in detail in

Chapter 6.

17

Powering Up

Press the “I” side of the rear panel power switch to turn on the unit. The processor is designed to be turned on
and left on. Press the “O” side of the switch to turn off the unit for servicing.

When the Omnia.Multicast is first turned on, there is a few seconds of delay as the system starts up. An

operating system start up screen is displayed. Under normal conditions it should appear as:

Load Algorithm...

After approximately ten seconds, audio will be present from the analog outputs. The AES/EBU output also

becomes usable at this time. However, full initialization of the software is not complete for several more

seconds. After a few seconds, the Main Menu display will appear:

OMNIA.Multicast

Audio Processing

Input/ Output

Display

Preset: 64kbAACSBR

At this point, the Omnia.Multicast is fully operational. The next chapter covers operation through the front-

panel user interface.

18

Chapter 2: The User Interface

A

Now that your Omnia.Multicast is rack-mounted, connected to a program audio source, and turned on, you’re

ready to learn how to operate it! This chapter covers the Graphical User Interface, your window into the

Omnia.Multicast processor.

The user interface consists of a front panel-mounted jog-wheel with push-switch, a push-button and an LCD

screen. The LCD screen displays menus, parameter settings and bargraphs (Level Meters and Processing

activity). The push-button toggles between the two display modes: the menus/parameters mode and the

bargraph mode. The menus are used during initial setup and for adjusting the processing parameters. In normal

day-to-day operation, one of the bargraphs is typically displayed to dynamically indicate the real-time signal

processing.

udio Processing

Input/Output
Display

Using the Jog Wheel

The main user control for the Omnia.Multicast is the large, easy to use jog wheel with its integral push-switch.

We believe that you will quickly become comfortable with how it works, and appreciate its simplicity.

Rotating the Jog-Wheel moves a highlighting bar up or down through menus and parameter choices. Pressing

the jog-wheel (called “clicking”) selects the highlighted menu item or parameter choice. When editing the

parameter values, rotating the jog-wheel adjusts the parameter’s value up (by rotating CW) or down (CCW).

Once the desired value is reached, clicking the jog-wheel saves the value and returns the display to the previous

menu or sub-menu.

The behavior of the Omnia.Multicast's menu system is consistent across pages and is easy to learn. The

following procedure is used for all parameter selection and editing:

1. Use the jog-wheel to highlight a menu item or sub-menu item.

2. Click the jog-wheel to open up that item.

3. Once a parameter is displayed, highlight and click the name to open up the parameter value edit box.

4. Use the jog-wheel to adjust the value of the parameter.

5. Click to accept the value and return to the last sub-menu.

19

When the front panel is in bargraph mode, the jog-wheel is used to select between various pages of bargraphs

that can be displayed. Push the push-button located to the left of the jog-wheel to change to bargraph mode.

Rotating the jog wheel counter-clockwise moves left one page and rotating clockwise moves right. The pages

do not wrap around from beginning to end or vice-versa. Rotating the wheel CCW will always eventually bring

up the I/O meter page and remain there.

Main Menu Orientation

When the processor is first turned on, several start-up screens are displayed. After ten to fifteen seconds the

Omnia.Multicast Main Menu is displayed with a sliding menu bar along the right side of the screen to indicate

your position within the menu hierarchy. A multipurpose help line is located at the bottom of the display.

Note: After a time-out, the help line will cycle through: the current preset name, and the day and date. The time

is displayed at the right side.

The menu system has been designed to be intuitive and simple to use, with a minimum of sub-menu layers.

Most operating parameters are found less than three sub-menus deep. This allows multiple processing changes

to be made “on-the-fly” with relative ease. The complete system is managed through the four menu choices on
the Main Menu. They are: Audio Processing, Input & Output, Display and Utility

The Audio Processing menu item is shown highlighted in the Main Menu Items illustration. The highlighting is

controlled by the jog-wheel. Rotate the jog-wheel CW to step the highlighting down through the menu items.

When the desired menu item is reached, press the jog-wheel once (“click”) to select that item. If the item has
sub-menus (like Audio Processing), then the sub-menu choices will be displayed. If the menu item is a

parameter selection, then the parameter choices or a bargraph value indicator is displayed. Rotating the jog-

wheel steps through the choices and raises (when rotated CW) or lowers (when rotated CCW) the parameter

value. Click the jog-wheel to select the parameter.

When a sub-menu is displayed, the top menu item will always be the return arrow. Highlight the return arrow

and then “click” to move back to the next higher menu.

OMNIA.Multicast

Audio Processing

Input/ Output

Display

Preset: 64kbAACSBR

User Interface Tutorial

The following two exercises are a useful introduction to the user interface. They also show you how to select an

input source and set input levels, which are among the first things that need to be done to set-up the processor.

Start from the top of the Main Menu (as displayed when the unit is first turned on).

The first exercise demonstrates how to make a parameter selection:

1. Rotate the jog-wheel to highlight Input & Output.

2. Select this menu item by “clicking” the jog-wheel (push once on the jog-wheel). The Input & Output

sub-menu is presented:

Input & Output

Input Levels
Output Levels

Go to additional options

20