Omnia Audio Omnia-6EX, Omnia-6EXi Operating Manual

Omnia-6EX / EXi

HD + FM

Broadcast Audio Processor

Installation and Operation Manual

Version 1.4 / June 2005

Applicable to Omnia-6 FM / HDFM /

EX and Exi Models

With v7.1.0 Release Software and Higher

A Telos Company

Omnia ● 2101 Superior Avenue Cleveland, Ohio 44114 USA

TEL: [phone] ● FAX: [phone] ● Email: [e-mail]

Omnia Europe ● Johannistrabe 6 D-85354 Freising Germany

TEL: [phone] ● FAX [phone] ● Email: [e-mail]

www.omniaaudio.com

www.omniaaudio.com

August, 2003

Greetings!

It is with great pleasure to offer you our latest audio processor, Omnia-6EX! First and foremost, I must share my
gratitude as well. This new addition continues the evolution of Omnia processing. The worldwide acceptance of our
product line has been quite humbling to say the least. As I write this, our audio processors are now deployed by so
many leading broadcasters throughout the world that when looking at the list, I am overwhelmed by the recognition
that my (originally small) project to improve the sound of radio has gathered. So, it’s to you I say Thank You!

1986 seems like just a short time ago! It was that year, in the engineering shop at Z-100, (WHTZ-FM) New York City
that our first product was born, the Vigilante FM Limiter. Now, 16 years later, along with an incredibly talented team of
fellow broadcasters and engineers, we offer you a feature rich, and sonically powerful tool - the Omnia-6EX! This
processor is not just Frank anymore. It’s a complex effort from a tremendous team that has had only one goal in mind ­to raise the bar, yet again, and present you with our best effort possible.

I don't have enough space here to thank each and every one of the Telos/Omnia worldwide team members who have
contributed to this product in so many important ways. All I can say is that we would not be where we are today
without the heroic and brilliant efforts from all of you working together. It is our goal to set the standard by which all
others will be judged. The rules have changed, and Omnia processing is the reason why! What was once a truly small
company consisting of only my cat Vito and me has expanded to the point of having the best talent in every area of
product design, engineering, and marketing. (Not to mention, we now have the vital assistance of three cats - Omnia,
Zephyr, and Mocha.)

If I may say so, our pool of engineers for DSP development and software design is probably the finest in the radio
industry. My partner in crime, Steve Church, brought DSP into the broadcasting field in the mid-1980’s and we’ve
been strengthening our abilities ever since. Sharing Telos’ ingenuity for DSP design has been tremendously beneficial
to our work on Omnia. If you thought the original Omnia made noise on the dial, all I can say is look out! It’s like one
of the top-of-the hour station ID’s that Scott Shannon used to jam on Z-100 “Lock It In And Rip The Knob Off!” That's
the kind of listener-grabbing power and capability Omnia-6EX delivers!

As HD-Radio evolves, it is worth mentioning that our organization Telos and Omnia were deeply involved behind the
scenes with the IBOC developers. Our extensive background in dynamics processing and audio codecs allowed us to be
of assistance to iBiquity in development of their system. We were just one of those involved helping them understand
the need for a better codec for the AM system, which they have now implemented. As a small reminder, it was the
efforts of our Steve Church who introduced the USA to MP3, and MP3 has now evolved into aac. Modestly speaking,
no other processing developer has the synergy of being on the leading edge of both coding and dynamics.

Before signing off, I would be remiss not to mention one individual though, Jeff Keith, the leader of Team Omnia. Jeff
is quite well known in his own right as an audio processing guru! His years of radio station experience and vast
processing knowledge have dominated many a radio market, and now his efforts are an added benefit to Omnia-6EX.
His creativity, passion and commitment to our success have helped all the various talented (and sometimes chaotic)
crew unite in a common goal. To build a processor so great, it would surpass even my high expectations. Jeff, you and
your team have succeeded! Thus, I dedicate Omnia-6EX to you!

Not only do you have in your possession the best sounding audio processor available, you also have the full support of
our organization. If you have something to say, we’re here to listen. We’ve been fortunate through the past, that people
like you have taken the time to offer us valuable feedback and review of our endeavors. You can now see the result of
that, as you are now rewarded with the next step forward!

Without further adieu, it’s time for us to jam! So, as my buddy Scott Shannon would often say to me, “Frank-o, Let’s

Crank It Up Man!”

Here’s to Dial Dominance,

Frank Foti

Omnia-6ex Use and Operation Manual – V:1.00

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S A F E T Y I N S T R U C T I O N S

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
operations 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 installation procedures.

7. Water and Moisture. Do not use this product near

water – for example; near a bathtub, washbowl, 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 connects to 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 supply 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.

Object and Liquid Entry. Never push objects of any

14.

kind into this product through openings as they may
touch dangerous voltage points or short out parts that

could result in a fire or electric shock. Never spill liquid
of any kind into 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
recommendations.

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 of the product to

qualified service personnel.

18. Damage Requiring Service. Unplug this product from

the AC wall outlet and refer servicing to qualified
service personnel under the following conditions:

• When the AC plug is damaged.

• If liquid has been spilled or objects have fallen into the

equipment.

• If the product has been exposed to rain or moisture.

• If the product does not operate normally (following

operating instructions).

• If the product has been dropped or damaged in any

way.

• 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 safe operating
condition.

21. Cleaning. Do not use liquid cleaners or aerosol

cleaners. Use only a damp cloth for cleaning.

Omnia-6ex Use and Operation Manual – V:1.00

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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.

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.

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 radioelectriques depassant les limits applicables aux
brouillage radioelectrique edicte par le ministere des Communications de Canada.

The Lightning Flash With

Arrowhead symbol, within an

equilateral triangle, alerts the user

to the presence of un-insulated

dangerous voltage within the

product's enclosure that may be of

sufficient magnitude to constitute

the risk of electric shock.

Omnia-6ex Use and Operation Manual – V: 1.20

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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!

Omnia-6ex Use and Operation Manual – V: 1.20

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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 pr oduct 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/manuals.htm

Installation Tips
Tech Bulletins and Papers

Tech Support – Software Upgrades
Warranty

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

http://www.omniaaudio.com/techinfo/default.htm

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

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

Thank you for selecting the incredible Omnia-6EX Audio Processor. Your continued patronage and support are
appreciated.

Sincerely,

Team Omnia

Omnia-6ex Use and Operation Manual – V: 1.20

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Omnia 6 Performance Specifications

As of October 2003 – Version 7.0.0 Software

Note: All measurements made with the supplied “FACT TEST2” preset, which is available in the Preset
Menu.

System

Signal to Noise: The measured noise floor will depend upon the settings of the Input and
Output Gain controls. The Omnia 6'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 6 digital signal processing chain is 144 dB. Typical SNR using
the “FactTest2” preset is greater than –80dB referenced to 100%
modulation.

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

Conventional FM Specifications (FM Analog)

Frequency Response: Complies with the standard 50 or 75 microsecond pre-emphasis curve

within ± 0.50 dB, 30 Hz to 15 kHz. The analog left/right outputs and
AES/EBU Digital outputs can be configured for flat or pre-emphasized
output.

Signal-to-Noise Ratio: > -80 dB de-emphasized, 20 Hz –- 15 kHz bandwidth, referenced to
100% modulation).

System Distortion: Less than 0.01% THD, 20 Hz – 7.5 kHz. Second harmonic distortion
above 7.5 kHz is not audible in the FM system

Stereo Separation: Greater than 65 dB, 20 Hz –- 15 kHz; 70 dB typical.

Crosstalk: > -70 dB, 20 Hz -- 15 kHz.

Composite Outputs: Configuration: Two electrically independent outputs. Software based

level adjustment.
Source Impedance: 10 ohms or 75 ohms, jumper-selectable. Single-ended
and floating over chassis ground.
Load Impedance: 50 ohms or greater load is suggested.
Output Level Ranges:
Low Range: 0.66 to 5.02 V P-P, High Range: 1.45 to 11.02 V P-P,
software selectable.
Pilot Level: Adjustable from 6.0% to 12.0% in 0.1% steps.
Pilot Stability: 19 kHz, ± 0.5 Hz.
D/A Conversion: Burr Brown PCM1704, 24-bit sign-magnitude D/A
converter.
Signal-to-Noise Ratio: -85 dB typical, 75 µS de-emphasized, 15 kHz
bandwidth, referenced to 100% modulation).
Distortion: < 0.02% THD 20 Hz – 15 kHz bandwidth, 75 µS de-
emphasized, referenced to 100% modulation.

Omnia-6ex Use and Operation Manual – V: 1.20

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Stereo Separation: > 65 dB, 30 Hz – 15 kHz.
Linear Crosstalk: > -80 dB, main to sub or sub to main channel
(referenced to 100% modulation).
Non-linear Crosstalk: > -80 dB, main to sub or sub to main channel
(referenced to 100% modulation).
38 kHz Suppression: > 70 dB (referenced to 100% modulation).
76 kHz Suppression: > 80 dB (referenced to 100% modulation).
Pilot Protection: > -65 dB relative to 9% pilot injection, ± 1 kHz.
57 kHz (RDS/RBDS) Protection: better than -50 dB.

Connectors: Two EMI suppressed female BNC, floating over chassis
ground.
Maximum Load Capacitance: 5nF (at 10 ohms source impedance).
Maximum cable length: 100 feet/30 meters RG-58A/U.

HD Radio Specifications (DAB)

Frequency Response: Within ± 0.50 dB, 30 Hz to 20 kHz.

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

Signal-to-Noise Ratio: > -100 dB, 20 Hz –- 20 kHz bandwidth, referenced to 0dBfs

Stereo Separation: Greater than 95 dB, 20 Hz –- 20 kHz; 85 dB typical.

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: A 13dBu input signal nets a –12dBFS input meter
reading when the Input Gain Control is set to 0.0 dB. A 1dBu input signal
nets a -12dBFS input meter reading when the Input Gain Control is set to
+12 dB.

(Note: When the Input Gain and Master Drive controls are set to 0.0 dB,

a +13dBu input signal results in an input level of –12dBFS, and a
Wideband AGC gain reduction of –15dB.

A/D Conversion: Crystal Semiconductor CS5360, 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 -6 dBu to +24
dBu peak, into 600 ohms or greater load, software-adjustable.

D/A Conversion: Crystal Semiconductor CS4390 24 bit, 128x over-sampled.

Connectors: Two, EMI-suppressed XLR-male. Pin 1 chassis ground, Pin 2 “Hot”.

Omnia-6ex Use and Operation Manual – V: 1.20

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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 8 and 108 kHz.

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

Digital Audio Output
#1: Stereo per AES3 standard. Output can be configured in software for flat

or pre-emphasized response at 50 or 75 microseconds.
Digital Sample Rates: Output sample rates software selectable for
32kHz, 44.1kHz, 48kHz, and 96 kHz.
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.

Digital Audio Output
#2: Stereo per AES3 standard. Output can be configured in software for flat

or pre-emphasized response at 50 or 75 microseconds.
Digital Sample Rates: Output sample rates hardware jumper selectable for
32kHz, 44.1kHz, 48kHz, or 96 kHz, or its rate slaved to AES #1.
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.

Digital Sync Input: External Sync: Output sample rate can be synchronized to the signal
present on the AES/EBU input, or to an AES3 signal applied to the Ext.
Sync input connector. (does not accept Word Clock inputs)
External Sync Range: Accepts sample rates from 32kHz to 96 kHz.
Used for synchronization of the Digital Output signal to an external
reference. Automatically accepts sample rates between 32 and 96 kHz.
Connector: XLR-female, EMI-suppressed. Pin 1 chassis ground, Pin 2-3
transformer isolated, balanced, and floating. Standard AES3 specified
balanced 110 ohm input impedance.

Note: If AES Output #2 is slaved to AES Output #1 (hardware jumper) and
External Sync is selected for AES #1, then AES Output #2 becomes slaved to
the sample rate of the Sync input for AES Output #1.

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: 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.

Omnia-6ex Use and Operation Manual – V: 1.20

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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 6 Remote Control software. Virtually any parameter of
the Omnia 6 may be programmed to change through this interface
feature.

Power Requirements: Voltage: 100-250 VAC, 50/60/440 Hz., < 75VA

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 5.25” high x 16” deep (48.26cm wide x 13.335 cm high x

40.64 cm deep) including connectors. Unit requires three EIA rack
spaces for proper mounting.

Shipping Weight: 35 lbs. / 15.876 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.

Omnia-6ex Use and Operation Manual – V: 1.20

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Warranty

This Warranty covers “the Products,” which are defined as the various audio equipment, parts, software
and accessories manufactured, sold and/or distributed by TLS Corp., d/b/a Omnia (hereinafter
“Omnia”).

With the exception of software-only items, the Products are warranted to be free from defects in material
and workmanship for a period of two years from the date of receipt by the end-user.
Software-only items are warranted to be free from defects in material and workmanship for a period of 90
days from the date of receipt by the end-user.

This warranty is void if the Products are subject to Acts of God, including (without limitation) lightning;
improper installation or misuse, including (without limitation) the failure to use telephone and power
line surge protection devices; accident; neglect or damage.

EXCEPT FOR THE ABOVE-STATED WARRANTY, OMNIA MAKES NO WARRANTIES, EXPRESS OR
IMPLIED (INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE).

In no event will Omnia, its employees, agents or authorized dealers be liable for incidental or
consequential damages, or for loss, damage, or expense directly or indirectly arising from the
use of any of the Products or the inability to use any of the Products either separately or in combination
with other equipment or materials, or from any other cause.

In order to invoke this Warranty, notice of a warranty claim must be received by Omnia within the
above-stated warranty period and warranty coverage must be authorized by Omnia.
If Omnia authorizes the performance of warranty service, the defective Product must be delivered,
shipping prepaid, to: Omnia, 2101 Superior Avenue, Cleveland, Ohio 44114.

Omnia, at its option will either repair or replace the Products and such action shall be the full extent of
Omnia’s obligation under this Warranty. After the Products are repaired or
replaced Omnia will return them to the party that sent the Products, and Omnia will pay for the cost of
shipping.

Omnia’s authorized dealers are not authorized to assume for Omnia any additional obligations or
liabilities in connection with the dealers’ sale of the Products.

Omnia products are to be used with registered protective interface devices which satisfy regulatory
requirements in their country of use.

Omnia-6ex Use and Operation Manual – V: 1.20

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TABLE OF CONTENTS

Greetings 2
Safety Instructions 3
Hazard / Warning Labels 4
Notices 6
Specifications 7
Warranty 11
Quick Start Setup Guide 15

1 - INSTALLATION

Omnia-6EX Pre-installation Tasks 16

PC Card and Modem Installation 16
AC Environment Considerations 17
Installation and Connections 18

Rack Mounting 18
AC Connection 18
Audio Inputs 19
Audio Outputs 19
Composite Outputs 19
19 KHz Sync Output 20
SCA Input 20
Ethernet Connection 20
RS-232 Connection 20
Interface Connection 21
Powering Up 22

2 - THE OMNIA-6 USER
INTERFACE

User Interface Introduction 23
Using the Jog Wheel 24

Level Meters and Processing Bargraphs 25

Audio I/O Level Display 25
Processing Display 25

Main Menu Display 26

Home Icon 26
“X” Close Window Icon 27
Remote Control via Network Indicator 28
Headphone Level Control 28

User Interface Tutorial 29
Menu Overview 31

Menu Items 31
Preset 31
Process 31
Input & Output Menus 32
Encode 32

Menu Overview, continued

Schedule 33
System 33

Menu Selections 34

Preset 34

Preset List 34
Choose (preset) 34
Modify (preset) 35
Save Current (preset) 35
Save Current As 35

Compare 35
Protect 35
Passcode 36

Process 37

Input 37

Input Gain Master / Right Trim 37

Master Drive 38

Input Source 38

Input Mode 38

Input Failsafe 38

High Pass Filter 39

Phase Rotator 39

Output 40

Peak Output Level 40

Set Levels 40

AES-1 Output Sample Rate 40

Outputs 40

FM Outputs Submenu 41

Diversity Delay 41

Pre-Emphasis 41

De-Emphasis 41

MPX Power Limiting 42

Encode 43

Composite Output 1 & 2 43

SCA Level 43

Pilot Injection 43

Pilot Phase 43

Separation 44

Schedule 44

Schedule List 44

New 44

Modify and Remove 44

Load From Card 44

Save To Card 45

Current State 45

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Menu Selections, continued
System 45

Port Baud 45
Security Lev(el) 45
Backlight 46

Set Time 46
Set Date 46
About 46
Change Password 46
Lock Unit 47
Reset Passwords to Defaults 47
Load Defaults 47
Load From Card 47
Save To Card 47

Reboot System 47
Security Config 47
NTP 48

Network 49

Mac Address 49

IP Address 49

Gateway 49

Subnet Mask 49

Save Changes 49

Reboot Display 49

Test Broadcast 49

3 - THE OMNIA-6EX: AUDIO
PROCESSING OVERVIEW

Process Block Diagram 50

Wideband AGC 51
Phase Linear Crossovers 51
Five Band AGC 51
Enhancer Section 51
Deep Bass EQ 52
Phat Bass EQ 52
Warmth EQ 52
Stereo Expander 52
Multiband Dynamic Peak Limiter 52
Distortion Canceled Clipper 52
Look Ahead Limiter 53
Stereo Generator / Encoder 53
Composite Clipper 53
Pilot Protection Filter 53

4 - PROCESSOR INTERFACING

Processor Location 54

Analog STL Use 54
Digital STL Use 55
Monitoring Location 55

Processor Location, continued
Source Material Quality 55
Studio Microphone Processing 55
Processor Latency / Time Delay 56
Operating Levels 56

Omnia-6EX Connections 57

Output Connection Options (FM Mode) 57

Omnia-6EX Connections, continued

Interfacing with a Digital STL/ Exciter
(FM Mode) 57
Pre-emphasis – where to insert?
(FM Mode) 58
Output Connection Options (HD Mode) 59
AES-2 Output Sample Rate Settings 60

5 - FINE TUNING YOUR SOUND

About Loudness and Listener Fatigue 61

Clarifying your Processing Objectives 61

Adjustment Procedure 62

Meter Displays 63

AGC Metering 63
Limiter Metering 63

Interpreting the Meters 64

About Factory Presets 65

Loading a Preset 66
Parameter Editing 67

Adjusting the Wideband AGC 68
Adjusting AGC Crossovers 69
Adjusting Multiband AGC's 70
Adjusting the AGC Mixer 71
Adjusting The Enhancers 72
Adjusting the Limiters Crossover 73
Adjusting the Multiband Limiters 74
Adjusting the Final Mixer (Lim Mix) 75
Adjusting the Clippers
(FM Mode) 76
Adjusting the Look Ahead Limiter
(HD Mode) 77

Saving, Naming, Deleting and Protecting
Presets 79

Saving Presets 79
Renaming and Deleting Presets 80
Protecting Presets 80
Passcode 81

Getting the Sound You Want 82

A Word About Loudness 82
Quality versus Loudness 82

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Getting the Sound You Want, continued
Increasing Loudness 83
Adding More “Detail” to the sound 84
Making Sound Equalization Changes 84

Thunder Bass 85

6 - REMOTE CONTROL SOFTWARE

Software Installation 86
Setup and Configuration 87
Finding the software version number 87

Edit Connection dialog box 88

Using the optional modem card 89

Using your own modem 89

Using a Direct Serial Connection 90

Connecting via Modem 90
Custom modem initialization strings 91
Using an Ethernet based connection 93

Establishing a Remote Session 94

Terminal Programs/Direct Connection 95

Trigger Script Editor 96

Dry Contact Closures 96

Applying Control Voltages 96

Use of Trigger Scripts 97

Paras and Sysparas 97

Using the Script Editor 97

Script Command Definitions 98

Dayparts 98

Presets 98

Non-system Parameters (paras) 99

System Parameters (sysparas) 100

Setting New syspara Values 100

Using the Script Editor, continued

Creating a Trigger Script 101

Example: Switch to Mono 101
Example: Switch to Stereo 102

Interface Connector 103
“One Way” Scripts 103

Scripting via Daypart Schedul er 104

7 - TROUBLESHOOTING

Rear panel serial port setup 105

Normal boot up message 106
Audio Failure Alarm 107
Audio Restoration Alarm 107

Diagnostic & Error Messages 108

Safety Note! 110
Narrowing down problems 110

Obtaining Service 112

Appendix A

CE Declaration of Conformity 113

Appendix B

Audio Processing FAQ (Includes
Factory Preset Descriptions) 115

Appendix C

Omnia-6EX Parameter Worksheet 121

Appendix D

Software Upgrade Procedures 122

Appendix E

GNU General Public License 123

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Omnia-6EX Quick-Start Setup Guide

We know that you’re probably in a hurry to get on the air with your new Omni a 6. If yo u have technical expertise
and previous knowledge of audio processor setup, using the following Ten -Point Quick-Start list will get you up and
running as quickly as possible. Please refer to the remainde r of t he Ope rating Guide for additional information.

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

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! Gently
the slot 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-6 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.

5. Navigate to the Input Menu and select the Analo g or AES/EBU input. If your audio source is providing an
audio feed you should see meter activity on the Input, Output, and Processing meters .

6. While in the Input menu and observing the Input meters, adjust the left and right input level controls until
the input meters are peaking between –12 and –6 dBFS.

7. Connect the audio outputs that are appr opriate for your installation.

8. Navigate to the FM Options submenu of the Output Menu and set the Pre-Emphasis and De-Emphasis as
appropriate for your location and your system.

9. If you are using the Analog or Digital XLR audio outputs, navigate to the Output Menu and adjust the peak
output levels for the equipment that follows the Omn ia.

10. If you are using the Composite MPX Outputs, navigate to the Encode Menu and adjust the Composite
Outputs to match the device following the Omnia-6.

You’re now ready to go on the air!

Note that the Omnia-6 is shipped with the “RocknRoll” preset as the default. While leaning toward the competitive
side, it provides a rich and balanced sound - a good starting point for nearly every format. Remember that our preset
names do not necessarily mean that the preset is useful for only the formats to which the name refers. Feel free to
experiment! Short descriptions of the Factory Presets can be found in Appendix B starting on Page 118.

press the card into

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Chapter-1: Detailed Pre-Installation

Even though we believe the Omnia-6EX is the easiest processor to install in its class, please take a few minutes to
read through this chapter before proceeding with the installation. This section offers common procedures for
installing your new Omnia-6EX processor. Note that there are additional installation and operation tips presented in
Chapter 4 that may pertain to your specific installation.

About This Manual

This manual is written to cover both the Omnia-6FM and the Omnia-6EX running software release version 6.2.0 or
higher. If the optional HDFM features on your unit are not activated, simply disregard the sections that specifically
cover HDFM channel features (such as the Look Ahead Limiter). These will be noted in parentheses after the
section heading: (HD Mode Only). Similarly, sections that specifically cover conventional FM channel features will
also be noted in parentheses after the section heading: (FM Mode Only )

If you would like to purchase and activate the HDFM features in your Omnia-6FM unit, please contact your dealer
or Telos / Omnia Customer support for instructions and the proper enabling code for your unit.

Omnia-6EX Components

By now, you’ve unpacked the shipping carton to gain access to this manual. Now is the time to inspect the Omnia­6EXunit and its shipping carton for any signs of shipping damage, which must be reported to you r carrier for any
claims. The Omnia-6EX shipping box includes the following components:

Omnia-6EX processor (containing the DSP hardware)
Omnia-6EX PCMCIA Type Memory card (holding the DSP software)
Omnia-6EX Operating Manual (this document)
Warranty Registration Card (Please complete the form and return/FAX it to Telos/Omnia)
Two IEC Power Cords, one for use in the US, and one for use in Europe

PC Card & Optional Modem Installation

Before installing your Omnia-6EX, or even plugging in the power cord, make sure the Omnia-6EX PC Memory
Card and Optional Modem Card (if purchased) are installed into the correct card slots on the back panel and are
fully seated. Installation or removal must be done with the power off unless directed otherwise.

The PC Memory Card is inserted into the top card slot with the Omnia label facing up and the version number
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. Gently
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.

press the cards into the slots

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The Omnia-6EX also contains a third PC Memory Card slot that is used to load software for the Front Panel. The
slot is located under the top cover on the right-hand side of the Front Panel circuit board and is normally un­occupied. Please do not insert or remove any PCMCIA cards from this slot without the direct assistance of Telos /
Omnia customer support. Make sure the AC power is off and disconnected from the unit before removing the top
cover and removing or replacing a card.

Important Note 1: The PC Cards used in the Omnia-6EX are not generic PCMCIA cards that can be bought in any
local computer store. They are cards that are specially qualified by Omnia speci fi cal ly fo r this pr od uct . I f yo u need a
backup card, please contact Omnia Customer Support to purchase an additional card. Inserting a card of unknown
origin risks damaging the Omnia, the cards, or both, and doing so will void your warranty!

Important Note 2: If you wish to operate the Omnia-6EX using a PCMCIA type modem, you must use the
available modem card from Omnia. Other modem cards are NOT qualified for use at this time. We cannot provide
technical support for any other modem card. External modems are a different case. 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

The Omnia-6EX subsystem is microcomputer-based. Therefore, it requires the same clean AC environment as any
modern computer system does. Even though the Omnia-6 is equipped with quite robu st internal AC input transient
suppression, we recommend that external transient suppressers/voltage regulation or an Uninterruptible Power
Supply (UPS) be employed. This recommendation becomes even more important when installing the processor at a
transmitter site, where there can be heavy transients on the power lines. These unwelcome events can be caused by
anything from load switching to lightning strikes on a nearby tower. Therefore, we ask that you give your AC power
environment and installation practices thorough consideration before plugging in your Omnia6-HDFM unit.

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Installation & Connections

Throughout this section reference is made to “software parameters.” These are part of the Grap hical User Interface,
which is covered in detail in Chapter 2.

Rack Mounting

The Omnia-6EX requires 3RU (5.25” [37 mm]) of rack s pace. Rack mount the unit using four rack screws. If only
two screws are going to be used, they should be in the bottom holes in the Omnia front panel. No other two-screw
mounting arrangement will prevent distortion of the front panel casting! Adequate ventilation should be provided,
and it is always good engineering practice to allow one blank rack space immediately a b ove and below the Omnia,
especially if equipment generating significant heat is located below the unit. Install a 1RU (1.75”) vented or solid
panel to fill these spaces.

The processor should be installed into a thoroughly grounded 19” equipment rack. Refer to Chapter 4, “Processor
Interfacing”, for additional considerations on where to physically locate your processor.

AC Connection (IEC)

The Omnia-6EX utilizes a heavily filtered, universal AC power-entry module. Its integral power switch is located
just above the IEC power cord receptacle. The Omnia6-fm's voltage–sensing, switching power supply allows it to
operate on AC mains voltages from 100 to 240 VAC, 50/60 Hz. In the USA, plug the provided IEC type AC power
cord into the unit and then into a grounded AC outlet. Outside of the USA, you must use the appropriate power cord
that complies with local electrical regulations.

Press the “I” side of the rear-panel power switch to turn on the unit. The Omnia-6EX is designed to be continuously
powered, however, pressing the “O” side of the switch turns off the unit for servicing.

When power is first applied, it takes approximately ten seconds to load the DSP code from the rear-panel PCMCIA

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memory card. During system power-up, the front panel LCD screens display several status screens while the
operating software and DSP code is loaded. Once the main Omnia-6EX Main Menu is shown on the right screen,
and the Meter Screen is shown on the left display, the unit is ready for use.

Rear Panel Connections

Audio Inputs—Analog & Digital (Female XLR)

Balanced XLR-type connectors are used as input connectors for both the analog and AES/EBU digital audio. Both
analog and digital input sources may be connected simultaneously, however, only the input source that has been set
in the Input menu is active. Analog/Digital Input source selection is done through the Input Source software
parameter setting in the Input Menu.

The stereo analog inputs are designed for standard +4dBu balanced signals. Pin 2 is Hot. The digital AES/EBU
inputs (IN and EXT. SYNC) accept any sampling rate between 32kHz and 96kHz. No user adjustment is necessary
on the AES input since a high-quality sample rate converter is built into the unit. Individual channel gain and level
setting for both analog and digital is done using the In put Gain software parameter settings in the Input Menu.

A Note About Relative Phase: If the relative phase of your installation (including the Omnia-6EX) differs from
that of your existing system, your announcers may feel that they sound “weird” in their headphones. If this occurs,
then the relative phase of the processor is 180 degrees from what your air talent is used to. To remedy this, you can
either reverse the polarity of both of the analog inputs or change the Invert Both software parameter setting in the
Omnia-6EX Input Menu.

Audio Outputs—Analog & Digital (Male XLR)

Individual Left and Right analog outputs are available on two male XLR jacks. There is also an AES/EBU digital
output. (Two on EX and Exi units) They are user configured for the conventional FM channel and/or the HD
Radio/DAB signal paths. The digital outputs provide selectable sampling rates. The analog output is derived from a
D/A converter driven from whichever output path is desired, either FM or HD/DAB.

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

Composite Outputs (BNC) (FM Mode Only)

These two low impedance outputs (Composite 1 and Composite 2) are each capable of driving up to 100 feet of RG­58A/U coax cable. The output levels are individually adjustable so the unit can operate as a “composite DA” to
drive a variety of equipment. The output levels and other stereo generator settings are set through software
parameters in the Encode menu. An internal jumper sets the output impedance to either 10 ohms (the factory setting)
or 75 ohms. The default setting is appropriate for the vast majority of exciter connections. However, in the event a
higher source impedance is required a jumper can be moved (one for each composite output) on the motherboard to

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change the source impedance to 75 ohms. For reference, J10 is for Composite #1, and J13 is for Composite #2.

19 kHz Sync Output (BNC) (FM Mode Only)

This TTL-level 19 kHz square wave output can be used as the reference signal for any SCA generator that operates
at 57 kHz or other multiple of the 19 kHz pilot frequency. This Sync output is phase and frequency locked to the
stereo pilot. When this signal is used to synchronize an external SCA or RDS generator, this locking assures that no
difference frequencies exist which may cause intermodulation components between the pilot and the SCA signal.

SCA Input (BNC) (FM Mode Only)

Any SCA signal above 53 kHz can be added to the composite outputs of the Omnia-6EX by connecting the SCA
signal to the SCA INPUT connector. The SCA signal is mixed in the analog domain directly into both composite
outputs. A high-pass filter on the SCA input provides SCA to main-channel crosstalk protection. The SCA deviation
level is controlled through the SCA Level software parameter in the Encode Menu.

Ethernet Connection

The Remote Control link for your Omnia6-HDFM can take several forms. Dial-up modem, RS-232 serial, and
TCP/IP over 10BaseT and 100BaseT networks can be utilized. Usi n g a ny of these options requires the Omnia-6
Remote Control application that can be downloaded from http://www.omniaaudio.com, the Omnia website. The
setup and operation of the Remote Control software application is covered in detail in Chapter 6.

RS-232 Connection (DB-25F)

This connector serves two important purposes: It can be used for a local, bi-directional computer connection with
Omnia-6 Remote Control, or it can be used for troubleshooting and error code resolution. In the former case,
Omnia6-HDFM 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-6EX.

The setup and operation of the Omnia Remote Control application is covered in detail in Chapter 6.

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Interface Connection (DB-9M)

This connector is the interface to the Omnia's internal trigger script function. Eight of the pins are “trigger” inputs
and the remaining pin is the ground reference. The trigger inputs can be used to dynamically alter the Omnia-6fm’s
operation in response to logic signal transitions at the interface connection. There is a unique response to each
trigger input, that is, both “go-high” and “go-low” transitions are sensed. With eight inputs, and two sensed states
for each one, sixteen unique 'trigger events' may be sensed to control the Omnia-6EXin response to these input logic
transitions. Virtually ANY parameter of the Omnia can be controlled using the Trigger Scripts.

The Trigger Script Interface Editor is a standard component of the Omnia-6 Remote Control application and is
covered in detail in Chapter 6.

Pin 1 Rear Panel Interface Connector for Remote Trigger Script Activation

The Pinout of the Omnia-6 rear-panel DB-9 Interface connector is as follows:
PIN 1 activates Trigger Script 1

PIN 2 activates Trigger Script 3
PIN 3 activates Trigger Script 8
PIN 4 activates Trigger Script 6
PIN 5 is connected to ground
PIN 6 activates Trigger Script 2
PIN 7 activates Trigger Script 4
PIN 8 activates Trigger Script 7
PIN 9 activates Trigger Script 5

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Powering Up

When the Omnia-6EX is first turned on, there is a few seconds of delay as the system starts up. You should notice a
rectangular flashing cursor on the right screen followed by revolving Omnia logos on both screens, and then the
main metering and menu screens should appear.

After approximately ten seconds from power-up, audio will be present fro m the analog, composite and headphone
outputs. The AES/EBU outputs also become usable at this time. However, full initialization of the ports is not
complete for several more seconds and there could be a brief, sub-second interruption while the AES/EBU IC’s
configurations are being verified by the operating system. After 25 to 30 seconds, the Meter and Main Menu
displays will appear on the left and right LCD screens respectively. At this point, the Omnia-6 is fully operational.

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Chapter-2: The Omnia 6 User Interface

Now that your Omnia-6EX 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-6EX
processor.

A front panel jog-wheel with integral push switch and twin Active-Matrix Color LCDs make up the Omnia-6EX
Graphical User Interface. The right-hand screen is the “Menu Display”, and it shows the menus, submenus and user­adjustable parameter settings. Also at the top of this screen is the world-renowned Dorrough
implemented in Omnia DSP code. The left-hand screen serves as the “Meter Display”. It shows bargraph indications
for the AGC and Limiter stages, as well as VU and 'digital sample accurate' peak indications of the Input and Output
Levels.

©

Loudness Meter, as

Current Preset Time of Day Help Text Box
“Home” Icon
The functions of the Menu Display can be selectively password protected from unauthorized processing or preset

changes. The Meter Display dynamically indicates real-time signal processing activity, as well as the Input/Output
levels. The backlights for the two displays are automatically turned off after a user set period of jog wheel inactivity,
and the factory default timeout is 15 minutes. User options of 1, 5, 15 and 60 minutes turn-off times can be
customized under the System menu.

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Using the Jog Wheel

The main user control for the Omnia-6EX is the large, easy to use jog wheel with its integral push-switch. Using the
control is both intuitive, and efficient, making it easy to navigate the menu structure of the Omnia-6EX. Processing
changes and system adjustments can be quickly made with ease without having to remember multiple controls, their
positions, and what they do in each menu. The behavior of the Omnia-6EX's menu system is consistent across pages
and is easy to learn. We believe that you will quickly become comfortable with how it works, and appreciate its
simplicity.

See the diagram below to learn how each movement of the jog wheel affects the various menu opt io ns.

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Level Meters & Processing Bargraphs

The horizontal meters show
digital, sample-accurate, peak
representations of the left and
right input and output levels,
while the vertical bargraphs show
processing activity of the various
algorithms. The currently selected
Preset Name is displayed is the
bottom left corner of the Meter
Display, the currently entered IP
address in the center and the
current time is displayed in the
lower right corner.

Left hand LCD screen showing I/O and process bargraphs

Audio I/O Level Display

The horizontal meters show the signal levels below full scale digital, (0 dBFS) which is the absolute maximum level
in the digital domain. Both input and output levels are displayed in real time. The “bouncing balls” indicate sample­accurate peak signal levels. In normal operation, the “bouncing balls” in the Input meters should regularly indicate
between –12 and –6 dBFS. Since the meters are indicating the true peak level, this will give you about 20 dB of
"VU" system headroom given typical (not hyper-comp ressed) program material. The Output meters indicate the
peak levels at the analog and digital XLR outputs but not the composite MPX outputs.

Processing Display

The thirteen vertical bargraphs in the lower half of the Meter Display show the processing activity in real time
within the Omnia-6EX. The first vertical meter (labeled W) represents the processing activity in the Wideband AGC
section. The five vertical “AGC” meters show the processing activity of each of the AGCs in the multi-band AGC
section. The six vertical “Limit” meters show the processing activity in each of the limiter sections of the multi-band
limiter. Each of the meters is capable of indicating up to 25 dB of gain reduction.

The rightmost vertical bar graph (labeled EFX) indicates the processing level of the built-in Stereo Enhancement
effect, when that function has been activated.

Note: The wideband AGC and Multi-band AGCs will recover to a resting gain setting which coin cides with the RTP
(Return To Platform) levels set for each band. Refer to Chapter 5, “Fine Tuning Your Sound”, for more information
on interpreting and using the processing bargraph displays.

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Main Menu Display

The Omnia-6EX Main Menu is displayed on the
right hand LCD screen, and offers seven menu
selections: Preset, Schedule, Process, Encode,
Input, Output and System. Below the Main Menu
in the lower left corner of the display is a
multipurpose “Help Text” box.

The Omnia-6EX menu system has been designed
to be intuitive and simple to use, with a minimum
of layered submenus. Most operating parame te rs
are found on one of the seven main menus. This
allows multiple processing changes to be made
quickly and with ease.

When the Main Menu is displayed (as shown above), rotating the jog-wheel sequentially highlights each menu item.
This is called Highlight Mode. With a menu item highlighted, pressing on the jog-wheel (called “clicking”) brings
up that item’s submenu window. Similar action results when submenus are selected under these seven main menus.

“Home” Icon Preset Menu

The Preset menu item is shown highlighted in
the Main Menu Screen illustration above. In this
case, clicking the jog-wheel would open the
Preset Menu window (shown at left). To exit a
menu and move back to the main menu,
highlight the “H” Home icon in the lower left
corner, and click the jog-wheel.

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In all menus with adjustable parameters, rotating the jog-wheel sequentially highlights each control or selection
choice, along with the Home icon and the Headphone level button. In the Process menu, the parameter adjustment
windows have an “X” Close Window icon in the upper r ight corner (as shown in the AGC Mixer window below).
Highlighting this icon and clicking closes the window, returning the user to the Process menu, one level above.

“X”
Close Window Icon

AGC Mixer Submenu
To change the selection in a multiple-choice parameter, highlight the desired choice with the jog-wheel and click. A

filled box serves to indicate that a parameter choice is selected.
To adjust a “rotary” knob control, like those shown in the AGC Mixer Parameter Window, highlight the control and

click. The jog-wheel now functions as a rotary control. Rotating it clockwise adjusts the control up; counter­clockwise adjusts the control down. The adjusted value is shown below the control. The original value is retained in
a different color until the jog-wheel is clicked to make the new value permanen t.

To cancel a control change, return the jog-wheel to the control’s original value. To apply a new level or value and
return to Highlight Mode, just click the jog-wheel.

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Remote Control Session via Network Indicator

An exclamation mark inside a yellow
triangle will show up in the lower left
corner of the Main Menu screen when a
Network remote session is in progress.
A remotely connected network session
has priority over local control of the
front panel, so during a Network remote
session the Main Menu will be grayed
out. You may disconnect a Network
remote session and regain front panel
control by clicking the Disconnect
remote button.

Omnia 6 Main Menu

The triangle with exclamation mark signifies that a TCP/IP Remote Control session is active.

Note: No front panel indication is shown when a serial or modem based remote control session is in progress!

Headphone Level Control

A standard ¼” stereo headphone jack located at the lower left corner of the front panel allows the processed signal to
be monitored, and a Headphone volume level control is available in each submenu. When the headphone volume
control slider is highlighted, clicking changes the jog-wheel into a headphone volume control. Once the headphone
volume is adjusted to your liking, clicking the jog-wheel exits the volume adjustment mode, returning the jog-wheel
back to Highlight Mode.

Note: The headphone amplifiers are fed from the same high quality, 24-bit D to A converter as the analog XLR
outputs. Therefore, the overall Headphone volume will also be affected by the setting of the Peak Output Level
controls in the Output Menu.

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User Interface Tutorial – Input Source Selection and Peak
Input Level Setting

The following two exercises are a useful introduction to the user interface. Start from the Main Menu (as displayed
when the unit is first turned on ).

The first exercise changes a parameter selection (the Input Source selection):

1. Rotate the jog-wheel to highlight Input.

2. Click the jog-wheel (push on the wheel once) to bring up the Input window (shown below).

Input Source Select

Home Icon “H” Input Menu
Headphone Level Control

3. Rotate the jog-wheel until one of the Input Source choices: Analog or AES/EBU is highlighted. The filled box

next to the selection name identifies the current selection. The factory default selection for Input Source is
Analog. To change the selection to AES/EBU, highlight AES/EBU and click. The AES/EBU box will now be
filled and the digital input is now active. If you are using the analog inputs, highlight Analog and click to
reselect the Analog inputs.

4. Rotate the jog-wheel until the Home icon “H” is highlighted in the lower left corner of the window. Click to

return to the Main Menu.

5. Note that as you adjust the Input Source selection in this menu, the wording above the Input level bargraph on
the Meter Screen changes to follow the selected source name.

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The next exercise adjusts a parameter that uses a value. (Input Gain)
This also serves as a tutorial on setting the proper input levels for optimum performance:
For complete information on the controls in the Input Menu, see Pgs. 37-38.

1. Highlight Input and click to open the Input window.

Input Menu Showing Input Gain Controls

2. Rotate the jog-wheel to highlight Input Gain Master (Not

Master Drive), and then click the jog-wheel to

select the control.

3. Rotate the jog-wheel CW to increase the input gain. Rotate the jog-wheel CCW to decrease the input gain.
This control adjusts both channels together so if your input source is unbalanced, watch the Left channel
Input bargraph meter primarily when adjusting. The gain in dB is shown below the “control.” Note that the
original setting is always shown in a different color when the control is adjusted. To cancel level changes,
move the control back to the original setting and click .

Using normal program audio, a correct gain setting results in peak indications (the “bouncing balls”)

regularly bouncing up to between -12 and –6 dBFS. Since the meters are indicating the true peak level, this
will give you about 20 dB of "VU" system headroom given typical (not hyper-compressed) program material.

4. Once the desired gain is reached, click the jog-wheel to accept and use that value. This returns the jog-wheel
to Highlight Mode.

5. Highlight and click Input Gain Right Trim and adjust it if the input source is unbalanced. It adjusts the gain
of the right channel over a limited range of plus or minus 3 dB.

6. Rotate the jog-wheel until the “H”ome icon is highlighted. Click to return to the main menu.

All of the Omnia-6EX’s software parameters are set in a similar fashion using the jog-wheel in Highlight Mode to
scroll through menu items and parameters. Clicking a highlighted item selects it; when that item is a control, the jog­wheel adjusts the value or level. Clicking accepts the value or level and returns the jog -wheel to Highlight Mode.
Note: Changing any parameter value changes the Omnia-6EX’s audio output characteristics in real time so that all
adjustments can be auditioned as they occur.

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