Omnia Omnia-6EX / EXi User 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: [email protected] www.omniaaudio.com
Omnia Europe ●Johannistrabe 6 D-85354 Freising Germany
TEL: [phone] ●FAX [phone] ●Email: [email protected] www.omniaaudio.com

Omnia-6ex Use and Operation Manual – V:1.00
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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.
14. Object and Liquid Entry. Never push objects of any
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.

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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.
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.
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.

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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!

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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 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/manuals.htm
Installation Tips http://www.omniaaudio.com/support/oinstall.htm
Tech Bulletins and Papers http://www.omniaaudio.com/techinfo/default.htm
Tech Support – Software Upgrades http://www.omniaaudio.com/support/default.htm
Warranty 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

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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.

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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”.

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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.

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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.

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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.

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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
HomeIcon 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
PortBaud 45
Security Lev(el) 45
Backlight 46
SetTime 46
SetDate 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
PhatBassEQ 52
WarmthEQ 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 Scheduler 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 Omnia 6. If you 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 remainder of the Operating 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 press the card into
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 Analog 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 appropriate 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 Omnia.
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.

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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 Omnia-
6EXunit and its shipping carton for any signs of shipping damage, which must be reported to your 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 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.

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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 un-
occupied. 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 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, 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 robust 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 Graphical User Interface,
which is covered in detail in Chapter 2.
Rack Mounting
The Omnia-6EX requires 3RU (5.25” [37 mm]) of rack space. 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 above 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 Input 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 Exiunits) 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 RG-
58A/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. Using any 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.