Lynx Studio Technology lynx User manual

Mastering Analog to Digital / Digital to Analog Converter

User Manual

Including March 2015 Version 7

Firmware and Feature Update

Lynx Studio Technology, Inc.

www.lynxstudio.com

support@lynxstudio.com

Updated: November 20, 2015

Purchase Date: _____________________________________________________

Dealer Name: _____________________________________________________

Dealer Telephone: _____________________________________________________

Hilo Serial Number: _____________________________________________________

LSlot Serial Number: _____________________________________________________

Lynx Hilo User Manual

User Manual

Table of Contents

1 Introduction ................................................................................................................................ 1

1.1 Overview ......................................................................................................................... 1

1.2 Features ........................................................................................................................... 1

1.3 In the Box ........................................................................................................................ 1

1.4 Power and Safety Information ......................................................................................... 1

1.5 Rack-Mounting ................................................................................................................ 1

1.6 Operation Requirements .................................................................................................. 2

1.6.1 Audio Equipment Requirements ................................................................................................. 2

1.6.2 Computer requirements ............................................................................................................... 2

1.7 Using this manual ............................................................................................................ 3

1.8 Registration ..................................................................................................................... 3

2 Getting Started ........................................................................................................................... 4

2.1 Unpacking ....................................................................................................................... 4

2.2 Set up ............................................................................................................................... 4

2.3 Cable Connections ........................................................................................................... 5

2.4 Initial Setup ..................................................................................................................... 6

2.5 Computer Set Up ............................................................................................................. 6

2.5.1 Driver Installation for Windows XP, Vista or Windows 7/8/10 .................................................. 6

2.5.2 Hilo Driver Devices – Windows Operating Systems .................................................................. 7

2.5.1 Installation for Macintosh OS X .................................................................................................. 9

2.5.2 Installation for iPad ................................................................................................................... 10

3 Using Hilo .................................................................................................................................. 10

3.1 On Power Up ................................................................................................................. 10

3.1.1 Headphone and Monitor Out Volume Control .......................................................................... 10

3.2 Changing the Meter Page .............................................................................................. 11

3.2.1 Choosing the Meter Source ....................................................................................................... 12

3.3 Getting to the Menu Pages ............................................................................................ 13

3.3.1 Menu Screen conventions: ........................................................................................................ 13

3.4 Home Menu ................................................................................................................... 14

3.4.1 Sample Rate ............................................................................................................................... 14

3.4.2 Sync Source ............................................................................................................................... 14

3.4.3 SynchroLock ............................................................................................................................. 15

3.4.4 Optical Out Mode ...................................................................................................................... 15

3.4.5 Line In Trim .............................................................................................................................. 16

3.4.6 Line Out Trim ............................................................................................................................ 16

3.4.7 Digital In Source ....................................................................................................................... 16

3.4.8 Output Mix Routing Page .......................................................................................................... 17

3.5 Tools Page ..................................................................................................................... 25

3.5.1 Restore Default Routing ............................................................................................................ 25

3.5.2 Save Scene Button ..................................................................................................................... 25

3.5.3 Recall Scene .............................................................................................................................. 26

3.5.4 Sample Rate Converter .............................................................................................................. 26

3.5.5 LT-USB Mode ........................................................................................................................... 27

3.5.6 DSD Mode ................................................................................................................................. 27

3.5.7 Test Tone Function .................................................................................................................... 28

3.5.8 Power Up State .......................................................................................................................... 28

3.6 Information Page ........................................................................................................... 29

3.6.1 Digital In Channel Status........................................................................................................... 29

3.6.2 Digital Out Channel Status Button ............................................................................................ 30

3.6.3 Frequency Counters ................................................................................................................... 30

3.6.4 About Hilo ................................................................................................................................. 31

3.7 Display Controls ............................................................................................................ 31

3.7.1 Backlight ................................................................................................................................... 31

3.7.2 Return to Meters ....................................................................................................................... 32

3.7.3 Show/Hide Settings ................................................................................................................... 32

3.7.4 Analog VU Reference ............................................................................................................... 32

3.7.5 Calibrate Touchscreen ............................................................................................................... 32

3.7.6 Knob Settings ............................................................................................................................ 33

3.7.7 Language ................................................................................................................................... 33

3.7.8 Standard Menu .......................................................................................................................... 33

4 Firmware Updates .................................................................................................................... 34

5 Hilo Remote Control Application ............................................................................................ 36

5.1 Hilo Remote for Windows ............................................................................................. 36

5.2 Hilo Remote for OS X ................................................................................................... 36

5.3 Hilo Remote for iPad ..................................................................................................... 36

5.4 Using Hilo Remote ........................................................................................................ 36

5.4.1 Navigation Bar .......................................................................................................................... 36

5.4.2 Monitor Page ............................................................................................................................. 39

5.4.3 Adapter Section ......................................................................................................................... 44

5.5 Using Hilo Remote from a WiFi or WLAN connected computer. ................................ 46

5.5.1 Requirements ............................................................................................................................ 46

5.5.2 Initial Setup ............................................................................................................................... 46

5.5.3 Frequently Asked Questions ..................................................................................................... 47

6 Support ...................................................................................................................................... 49

6.1 Lynx Website Support Resources .................................................................................. 49

6.2 Telephone Support ......................................................................................................... 49

6.3 Registering your Hilo .................................................................................................... 49

6.4 Return Policy ................................................................................................................. 49

7 Appendices ................................................................................................................................ 50

7.1 Methods of Connection ................................................................................................. 50

7.1.1 USB 2.0 ..................................................................................................................................... 50

7.1.2 Thunderbolt ............................................................................................................................... 50

7.1.3 ProTools Digilink ...................................................................................................................... 50

7.1.4 Standalone ................................................................................................................................. 50

7.2 Battery Information ....................................................................................................... 50

7.3 Setting Trim Pots ........................................................................................................... 51

7.4 XLR Connector Wiring and Adapters ........................................................................... 51

7.4.1 Balanced Connections ............................................................................................................... 51

7.4.2 Unbalanced Connections with Twisted Pair Cable ................................................................... 52

7.4.3 Unbalanced Connections with Single Conductor Cable ........................................................... 52

7.5 Setting the Monitor Out Level Mode ............................................................................. 53

8 Troubleshooting & User Tips .................................................................................................. 54

9 Specifications ............................................................................................................................. 55

10 Certifications ..................................................................................................................... 56

10.1 FCC DECLARATION OF CONFORMITY ................................................................. 56

10.2 CE EMC DECLARATION OF CONFORMITY .......................................................... 57

10.3 CE SAFETY DECLARATION OF CONFORMITY ................................................... 57

11 Warranty Information ..................................................................................................... 58

1 Introduction

Thank you for choosing Lynx Hilo for your audio needs. The device you have received has been precision engineered to provide the very best audio quality possible, coupled with an innovative, intuitive user interface, and a unique and powerful feature set. Hilo is one of the first pro audio devices on the market that utilizes a full-color LCD touchscreen for control, metering and configuration. Far from an unnecessary bit of “eye candy”, the touch display allows quick routing and setup, as well as a variety of accurate metering and measurement tools. New features will be available in the form of downloadable firmware updates, keeping Hilo responsive to your needs for many years to come.

1.1 Overview

Hilo represents the zenith of Analog conversion, improving on Lynx’s famous Aurora converters with state-of-the-art components and design techniques. The innovative design of the analog stage and converter topology allow ultra-low noise and distortion specifications, producing an unprecedented level of clarity and depth-of-image. Much more than a “me too” stereo converter, Hilo actually features three unique sets of analog outputs, each with their own Digital-to-Analog converters, and independent routing. Main Outs, Monitor Outs and Headphone Outs all can feature a unique combination of sources with independent level controls.

1.2 Features

Hilo also has an extremely generous set of Digital I/O options. Apart from AD/DA conversion tasks, Hilo is one of the most powerful digital format converters/routers on the market. Digital formats include stereo AES/EBU, Stereo S/PDIF Coaxial, Stereo Optical S/PDIF which is switchable to 8-channel ADAT lightpipe, and 16 channels of USB2 communication to a host computer. Any digital input can be routed to any analog or digital output, and all digital outputs can have unique combinations of source inputs.

The unique 480 x 272 pixel LCD touch screen display makes Hilo stand out from other pro audio converters. Never before has establishing parameters and routing channels been so quick and intuitive in a high-end converter. Not only are clear and accurate meters provided, but the user can select from several meter styles. The Hilo display and features can be updated via simple computer firmware update tools, easily accessible from the Lynx website. Hilo’s feature set and display options will evolve in response to user feedback and the imagination of Lynx engineers.

Hilo is also a game changer in terms of flexibility. It is well suited for recording studio use, the home recordist, mastering, audio analysis, home theater/audiophiles, as well as field recording. With AC or battery-powered DC operation, Hilo can be used “for here” or “to go”. With its lightweight, portable design, no longer does the discriminating user have to choose between top rung sound quality and convenience.

1.3 In the Box

Before proceeding with the Hilo setup, let’s make sure that you received everything that was included with the purchase. In the Hilo box, you should find:

• Hilo AD/DA converter

• AC Power Cord

• Hilo User’s Manual

• One 6’ long Type-A to Type-B shielded USB 2.0 cable

1.4 Power and Safety Information

To prevent fire or shock hazard, do not expose this equipment to rain or moisture. Do not block any of the ventilation openings. Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Protect the power cord from being walked on or pinched, particularly at the plugs, convenience receptacles, and the point where they connect to the Hilo. Unplug this device during lightning storms or when unused for long periods of time.

Hilo utilizes a state-of-the-art universal power supply. The power supply will auto-detect the voltage from 100V to 240V and conform appropriately. No manual voltage adjustment is necessary.

1.5 Rack-Mounting

Hilo can be mounted in standard studio equipment racks using an optional two-space rack shelf available from Lynx.

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1.6 Operation Requirements

To operate Hilo successfully with your existing equipment, first let’s verify that you have compatible elements for best results.

1.6.1 Audio Equipment Requirements

Hilo features a wide variety of audio I/O formats. Compatibility with these formats are, of course, only important for I/O ports that you intend to use.

• Headphones: The Hilo headphone jack (PHONES) is suitable for driving stereo headphones through a ¼” TRS connection.

Any standard set of headphones should work with Hilo.

• Line Inputs and Outputs: Hilo can operate with balanced or unbalanced, line-level analog audio equipment (power amps,

powered speakers, headphone amps, microphone pre-amps, mixing boards, etc.) operating at trim levels of +18 dBu; +20 dBu; +22 dBu; +24 dBu; +0 dBV; +2 dBV; +4 dBV and +6 dBV . The LINE INs and LINE OUTs use XLR connections.

• Monitor Outputs: The Hilo MONITOR outputs can operate with balanced or unbalanced, line-level analog audio

equipment and use ¼” TRS jacks.

• AES/EBU Inputs and Outputs: The Hilo AES IN and OUT ports should work with any AES/EBU compatible device at

standard sample rates between 44.1 kHz and 192 kHz. The AES ports utilize XLR connections.

• SPDIF Inputs and Outputs: Hilo supports coaxial (electrical) SPDIF connections on RCA jacks, or SPDIF Optical signals

on TOSLINK connections.

• ADAT Lightpipe: Hilo’s TOSLINK Optical connector (S/PDIF/ADAT OPT.) can be software switched between 2-channel

SPDIF operation and 8-channel ADAT Lightpipe operation. When ADAT is selected, each input and output port supports up to eight channels at sample rates of 44.1 kHz and 48 kHz, four channels at sample rates of 88.2 kHz and 96 kHz, or two channels at sample rates of 176.4 kHz and 192 kHz.

1.6.2 Computer requirements

Hilo is configured to operate with Mac or PC computer systems via a USB connection. If one wishes to use this connection, check the system requirements below to insure compatibility.

It also is important to note that most professional audio applications place significant demands on your computer’s resources, and it is therefore recommended that you meet or exceed the recommended system requirements for your Digital Audio Workstation or audio playback software, which will likely be greater than those listed for Hilo. Please refer to your audio software’s documentation for more information.

1.6.2.1 Windows

• Intel Core 2 @ 1.6 GHz, or AMD equivalent

• PC or laptop manufactured after January 2006

• 1GB RAM

• One functional USB 2.0 port

• Windows XP with SP3 (32-bit only), Windows Vista with SP2, Windows 7, Windows 8 or Windows 10

NOTE: Hilo’s USB operation is not compatible with Windows 95, 98, ME or Windows 2000.

1.6.2.2 Macintosh OS X

• Any Intel Processor based MacPro or MacBook computer running OS X 10.6.4 or higher

• 1GB RAM

• One functional USB 2.0 port

NOTE: Hilo’s USB operation is not compatible with OS 9 or OS X 10.6.3 or below.

1.6.2.3 iPad

• iOS 7 or higher (this excludes the original iPad)

• Apple iPad 2 or newer

• iPad camera kit for USB connection

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1.7 Using this manual

To insure smooth sailing with your new product, we recommend reading through the entire manual before using Hilo. Thereafter, use the manual as a reference as needed when questions arise.

The following typographic conventions are used in this manual:

• ALL UPPER CASE TEXT refers to a specific parameter selection control (i.e. SYNC SOURCE) or a cable connection.

• Text in quotation marks indicates a parameter selection value or menu option (i.e. “EXT”).

• Phrases, such as: Start > Programs > Lynx Studio Technology use the greater than symbol (“>”) to indicate multiple menu

options or mouse selections within a software control context.

1.8 Registration

Lynx is committed to providing you with the best service possible. To help us serve you better, please be sure to register your Hilo.

Once you are registered you will automatically receive notifications of new products and upgrades.

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2 Getting Started

Hilo was designed to be a product that is so easy to use that this section of the manual would scarcely be necessary. However, it is quicker to learn how the device works in one go, then to spend precious minutes figuring things out by randomly pressing buttons. We recommend reading this section thoroughly, before putting Hilo to serious use, if you can manage it.

2.1 Unpacking

Before setting up Hilo for use, remove it from the box and verify that the box contents described in section 1.3 are all present.

If so, connect the Hilo AC power cord to a grounded AC Outlet, or power distribution unit. Switch on the power switch on the back of Hilo (note: the | position on the power button is “On”)

Next press the front panel standby switch and verify that Hilo powers up.

If it does not, verify that the selected AC power source is operational. If it is and the unit still will not power up, please contact Lynx technical support.

If Hilo DOES power up, move on to Set up…

2.2 Set up

Hilo was designed to be adaptable to a variety of operational environments: on a desktop for Audiophile enthusiasts, in an equipment rack for recording studios, over a mixing console for a mastering engineer, etc. If Hilo is to be used on a desktop or other flat surface, it is best to leave the pre-installed rubber feet in place. These are designed to prevent scratching of Hilo or the surface that it is set upon.

In a recording studio context, where space is at a premium, one may choose to rack mount Hilo. A rack kit for the Hilo is available from Lynx dealers, or from www.lynxstudio.com.

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2.3 Cable Connections

Hilo features a treasury of I/O types, suitable to accommodate whatever audio devices you wish to integrate.

q USB 2.0 port

Use the included USB cable or equivalent to connect Hilo to a USB 2.0 equipped computer. Cable Concerns: If using a third party cable, make sure that it is USB 2.0 compliant. 5 meters (16 feet) maximum.

w LINE IN

Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal source. This input is not suitable for use with microphones, unless a microphone pre-amp is used to get mic-level signals up to line-level. Cable Concerns: If your signal source is unbalanced, consult Appendix to determine if your cables are wired correctly for use with Hilo. For unbalanced cables, 4.5 meters (15 feet) is the maximum recommended length.

e LINE OUT

Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal destination. Cable Concerns If your signal source is unbalanced, consult Appendix to determine if your cables are wired correctly for use with Hilo. For unbalanced cables, 4.5 meters (15 feet) is the maximum recommended length.

r MONITOR OUT

Use standard ¼” cables. TRS if balanced, standard ¼” TS if unbalanced. Cable Concerns: For unbalanced cables 4.5 meters (15 feet) is the maximum recommended length.

t AES IN/OUT

Use AES XLR cables (110 Ω). Insure that the connected device supports AES3 or AES/EBU. Cable lengths of up to 100 meters (328 feet) are acceptable.

y S/PDIF/ ADAT Optical

Use standard TOSLINK optical cables, of lengths up to 9 meters (30 feet).

u SPDIF Coaxial In Out

Use 75 Ω S/PDIF cable with RCA connections. Recommended maximum length is 6 meters (20 feet)

i Wordclock In/Out

Use standard 75 Ω wordclock cable with BNC connectors. Recommended maximum length is 9 meters (30 feet).

o Battery In

DC 4-pin XLR battery pack connector. Supports 9-18 volts DC. See Appendix 5.1 for more information.

a IEC Power connector

Use the included AC power cord

In Addition to the rear panel jack pack, there is one remaining cable connection on the Hilo front panel. The PHONES jack is a standard ¼” TRS connector, and is capable of driving the full range of stereo headphones available.

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2.4 Initial Setup

It is important to set up Hilo in the proper order to avoid any speaker damage calamities. Follow these steps for the best results:

• Connect the AC power cord to Hilo and to a quality, surge-protected AC power source. Check the Power and Safety section

of this manual for additional information.

• Connect cables from Hilo to whatever audio devices Hilo will be connected to. These could include powered speakers,

mixing consoles, power amps, microphone pre-amps, effects processors, etc.

• Make sure volumes are turned down on connected equipment to avoid excessive level being sent to the equipment during

setup.

• If the context of use is as a standalone AD/DA converter that will not be connected to a computer, skip ahead to section 3,

and in particular section 3.4.8: Output Mix Routing Page, for appropriate routing assistance.

• If using Hilo with a Mac or PC computer, follow the installation procedure below.

2.5 Computer Set Up

All driver files and utilities mentioned in the subsequent installation steps are available on our website at:

http://www.lynxstudio.com > Support > Downloads

If a previous driver version is present, it will automatically be removed as part of the driver installation process.

Note: No driver installation is required for OS X or iOS, only for Windows.

2.5.1 Driver Installation for Windows XP, Vista or Windows 7/8/10

1. Power on Hilo with the USB cable disconnected. The Hilo driver should be installed prior to connecting the cable.

2. Download the most recent driver from the http://www.lynxstudio.com website and save the file to a convenient location.

3. Double-click the downloaded HiloSetup.exe file.

4. Click “Run” on the following screen to launch the

installer.

6. Click “Install” to accept the default directory for

program files.

8. After some time, the Installation Wizard will

appear. Choose “Next” to proceed.

5. Accept the “End User License Agreement” to

proceed.

7. After some time the following prompt will appear to

allow changes to your computer. Click “Yes” in order to proceed.

9. After a pause, you will be prompted to connect the

USB device. Connect the USB cable from the Hilo to a vacant USB 2.0 port on your computer. Then click “Next”.

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10. In a few moments, you will be prompted to accept

the installation directory. Click “Install” to proceed.

12. When the installation completes, click “Next”.

You may receive a warning that the driver has not been digitally signed by Microsoft. It is safe to disregard this warning and select “Continue Anyway.”

On some systems the Windows hardware wizard will launch post driver installation. In this case, run the wizard using the “Automatic Installation” option, accepting the defaults, until it completes. Skipping this step may cause the driver to function incorrectly.

11. The driver files will be written to your hard disk.

13. Click Finish when prompted.

2.5.2 Hilo Driver Devices – Windows Operating Systems

Hilo was designed to provide maximum compatibility with the most popular audio and multimedia applications that use the Windows WDM (which includes both DirectSound and MME) and ASIO driver standards. It is crucial that the applications are set up correctly for optimal operation.

WDM was developed by Microsoft and is used most typically by media playback applications, such as Windows Media Player, iTunes, Quicktime Player, as well as the default format for media players like J River Media Center, FooBar, Media Monkey, etc.

ASIO was developed by Steinberg, and was designed to address the low-latency and high channel count needs of Pro Audio and Music Production. ASIO is an option for Audio Production applications such as Pro Tools, Cubase/Nuendo, Sonar, Samplitude/Sequoia, Audition, etc. These applications may also support MME or DirectSound, but when the option exists, we recommend using ASIO for the best performance.

2.5.2.1 WDM/Multimedia Applications

Hilo can be used as a playback device for most popular multimedia, home theater and consumer audio applications. Some such applications allow selection of specific playback devices. In these cases, one or two Hilo 8-channel play devices will be available to choose from, depending on whether Hilo is in 8 or 16 channel mode (see section 3.55- LT-USB Mode). These devices are labeled as “Lynx Hilo Speakers” and “USB Play 9-16”. These are 8-channel devices capable of playing back multi-channel streams, like surround sound, but can also be easily used for stereo playback. When “Lynx Hilo Speakers” is selected as the play device, stereo audio will stream to Play 1+ and with “USB Play 9-16” stereo audio will stream to Play Device 9+10. It is generally advisable to choose “Lynx Hilo Speakers” with any WDM program, as this will insure that audio streams to every analog and digital output on Hilo. If you wish to route a stream to a particular output, you can choose “USB Play 9-16” and route that to the desired physical output from the Output Mix Routing Page, as described in section 3.4.8 Output Mix Routing Page.

When output device selection is not an option, it can be assumed that the application uses the Windows default audio device. In this case, “Lynx Hilo Speakers” or “USB Play 9-16”should be established as the system playback default from:

With Windows XP navigate to: Start > Control Panel > Sounds and Audio Devices > Audio > Sound Playback: Default Device = “Speakers Lynx Hilo” or “USB Play 9-16”.

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With Windows Vista/Windows 7 Windows 8 and Windows 10 navigate to: Right-click Start > Control Panel > Hardware and Sound > Sound > Playback. Right-Click “Speakers Lynx Hilo” or “USB Play 9-16” and choose “Set as default device”.

2.5.2.2 ASIO Application

When using an application that supports the ASIO driver standard, one must specify the Hilo ASIO driver as the appropriate audio device. Once that is established, multiple stereo input and output devices will be available for use within the application. Please note: the LT-USB Mode from the Hilo “Tools” page will determine whether 8-channels or 16-channels of I/O are presented.

When using an ASIO compatible program, the appropriate ASIO device must be selected from a settings or options menu in the application. The correct choice would be “ASIO Lynx Hilo USB”.

Many ASIO applications provide access to an ASIO Control Panel for the device being used. For Hilo, this button will launch the Hilo Control Panel, as detailed below.

2.5.2.3 Hilo Control Panel

The Hilo Control Panel provides access to operational parameters for the Hilo, including setting buffer sizes to control latency. Latency in an audio interface can be defined as the time required to process a sample from an application to the interface’s audio output. A number of factors determine the achievable latency performance of a Hilo system: processor speed, operating system, sample rate, number of utilized record or play channels, system efficiency, etc.

Latency can be manipulated by changing the size of the buffers used to transfer data to and from the LT-USB card installed into Hilo.

The Hilo USB Control Panel provides access to buffer settings, both a Streaming Mode for WDM and ASIO, and also an ASIO Buffer Size control. This control panel can be launched from either the ASIO control settings within most audio applications or from “Start> All Programs> Lynx Studio Technology > “Hilo USB Control Panel”.

There are three tabs in the Hilo Control Panel

The STATUS page simply reveals the “USB Audio Device” (Lynx Hilo in this case), and the current “Sample Rate”. The sample rate cannot be changed here, it is information display only.

In the BUFFER SETTINGS page, the USB Streaming and ASIO buffer parameters control the size of the audio packets that are used to transfer audio to the LT-USB hardware. Smaller buffer sizes will give you lower latency.

However, if a buffer size is too small for the system or context, audio anomalies such as clicks and pops may occur. It is recommended to become familiar with altering the LT-USB buffer size to best suit the context of use.

When using ASIO based applications, both the Streaming and ASIO buffer sizes contribute to the overall latency of the system and interact in a cumulative fashion. It is not possible to set the stream buffer to a value smaller than that required for

When using WDM based applications, only the Streaming buffer size parameter contributes to the overall latency of the system. The ASIO buffer size is ignored. Most WDM applications also add a large amount of additional latency to ensure clean playback. For this reason, ASIO is the preferred driver model for pro-audio and low-latency situations.

To modify the latency, the “Streaming” buffer size must first be set. Choose the desired size and click “Apply”. We recommend setting this value to “Low Latency” in order to have the greatest flexibility in ASIO buffer size selection. If clean audio is not possible in this state, increase the stream buffer size to “Standard”. Once the Streaming size is set, you will have various options for the “ASIO” buffer size. Choose the appropriate size and click “Apply”. The default state for this value is “Auto”. Auto chooses a safe buffer size based on the stream buffer size selected and the sample rate being used. Once you have determined the smallest supported

the ASIO buffer size.

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Stream Buffer size, you typically will not have to change this again. The ASIO buffer size, however, may need to be increased or lowered from time to time depending on the context of use.

Once you determine the lowest achievable buffer size, you will typically have to double the size each time you double the sample rate, but the effective latency will remain constant. For example, if a system is capable of operating at a buffer size of 128 samples at 48 kHz, then for a 96 kHz project, the buffer size will likely need to be increased to 256 samples.

The third tab in the Hilo Control Panel opens the INFO page. This page simply reveals the connected product (again Hilo), the Revision of the LT-USB (its firmware version), serial number and driver build.

2.5.1 Installation for Macintosh OS X

Hilo will operate as a Core Audio device under OS X automatically without any driver installation required. Core Audio is the dominant audio driver model for OS X, and is used for media playback applications as well as Pro Audio applications.

Simply connect the USB cable from Hilo to your Mac OS X computer and Hilo will be immediately available for use. Please note that Hilo does require OS X version 10.6.4 or above.

2.5.1.1 OSX Audio Applications

Hilo can be used as a playback device for most popular multimedia, home theater and pro audio applications. Some such applications allow selection of specific playback devices. In these cases, a Lynx Hilo output device can be selected from the appropriate device selection menu.

In cases where the playback software does not provide access to output selections, the default output devices for the operating system will be used. In OS X, the audio out default device can be established from Applications > Utilities > Audio MIDI Setup.

When the Lynx Hilo is selected as the output sound device, channels 1&2 are active by default. In this state, audio will be sent to ALL Hilo outputs simultaneously. If you wish to mute a stream to a particular output, you can do that from the Output Mix Routing Page, as describe in section 3.4.2 Output Mix Routing Page.

2.5.1.2 Controlling Latency by Changing the Buffer Size

Latency in an audio interface can be defined as the time required to process a sample from an application to the interface’s audio output. A number of factors determine the achievable latency performance of a Hilo/LT-USB system: Processor speed; Operating system; Sample rate; Number of utilized record or play channels; System efficiency; etc.

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Latency can be manipulated by changing the size of the buffers used to transfer data to and from Hilo. Core Audio buffer size controls are offered within most pro audio recording applications. With Hilo, buffer sizes typically range between 32 and 2048 samples.

Smaller buffer sizes will give you lower latency. However, if a buffer size is too small for the system or context, audio anomalies such as clicks and pops may occur. It is recommended to become familiar with altering the Hilo buffer size to best suit the context of use.

2.5.2 Installation for iPad

Hilo can connect to an Apple iPad with the camera kit. Hilo will operate as an audio device under iOS automatically without any driver installation required.

Simply connect the USB cable from Hilo to your iPad, and Hilo will be immediately available for use. There is no capability in iPad applications to select audio devices. Any audio that plays from the iPad will automatically be routed to the Hilo through the camera connection kit/USB cable.

3 Using Hilo

Hilo’s Touch Screen gives it a key advantage over other converters. As all of the functions are controlled by the software that runs the touch screen, Hilo is not locked into just one way to work. We can add features. We can change the graphics. We can offer completely different user interfaces for different types of users. So the Hilo user interface in five years may be radically different than today’s Hilo. In short, it will evolve. You can help us with this. As you have ideas, suggestions, complaints, comments, send them to

hilo@lynxstudio.com. This email will go to the engineering, marketing and support staff who built this interface.

Hilo was designed for ease of use, without navigational clutter on the front panel.

The heart of the Hilo system is the 480 x 272 pixel front panel touch screen. This is where settings, routing, volume control and meters are displayed and managed. The Hilo screen is responsive to pressure. It may take a little getting used to the amount of pressure and accuracy required for the on-screen buttons to respond. Also, like any such device, Hilo employs navigational conventions that, although designed to be intuitive and require little or no explanation, may require a small learning curve initially.

3.1 On Power Up

Upon turning on Hilo, the first screen that you will see will be the METER page that was last selected when the unit was turned off. The dual Horizontal Meter set is shown below.

3.1.1 Headphone and Monitor Out Volume Control

If you turned Hilo off using the STANDBY switch on the front panel, all of your previous settings will be recalled. Your Headphone and Monitor Out levels will be the same as when you last used them.

Caution: Be sure to check the volume level of the Headphone and Monitor before playing audio. You can do this by simply turning the Rotary Control. A level indicator will appear at the bottom of the screen.

The Hilo PHONES Output has “jack sense”, so that the headphone volume controls are only available when headphones are plugged in. If headphones are not plugged in, then the Rotary Encoder will only control the Monitor Out level. If headphones are plugged in,

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then pushing in the Rotary Control knob will allow you to toggle between Headphone and Monitor Out Volume Controls by default. This can be changed from the KNOB SETTINGS button, see section 3.76; Knob Settings.

3.2 Changing the Meter Page

At this time there are four metering options:

Analog VU Horizontal Bar Style

All I/O

The “All I/O” Meter Screen now shows the active USB channels. Hilo can be toggled between USB 8-channel mode (the default) or 16-channel mode. 8-channel mode is appropriate for most users, supports sample rates up to 192 kHz and also DSD operation. 16channel mode is most beneficial for users requiring more USB channels particularly when using Hilo’s ADAT I/O. In 16-channel mode, the highest supported sample rate is 96 kHz. 8-channel and 16-channel mode can be toggled from the Tools menu.

USB 8-Channel Mode (Hilo Default)

For use with USB at sample rates up to 192 kHz and for DSD playback.

USB 16-Channel Mode

For 16 USB input and output channels at sample rates up to 96 kHz. Ideal for using the ADAT optical I/O on Hilo.

Note: If you are in 16-channel mode and turn DSD playback on, Hilo will automatically prompt you to switch to 8-channel mode

RTA

The Hilo RTA Meter is new for firmware revision 7. This is a professional 30-band Realtime Analyzer.

to access the high sample rates required for DSD playback.

RTA view presents the user with a high resolution Analysis Tool. This is an expanded version of the RTA that is

available for the Hilo touchscreen display.

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The stereo 30 band Real-time Spectrum Analyzer (RTA) is a very useful diagnostic and reference tool. The Hilo RTA computes the RMS energy in 30 frequency bands for left and right channels of a selected stereo input or output every sample period. This is a brilliant tool for mixing, mastering and even system troubleshooting. The RTA display can be customized with several parameter controls. Tapping the icon, brings up the RTA parameter settings window. Options are:

Peak Hold Reset: The Peak Hold controls can be set to Auto, or Manual. In Manual

Mode the user can press “Reset” to capture the peak levels at any point in time.

Color Scheme: Allows the display to be toggled between the mono-chromatic

“standard” display, and the multi-chromatic “Rainbow” display.

Scale: Allows boosting or cutting the program material in 3dB increments to get the

best meter reading. Amount of cut or boost is displayed in the text to the right of the buttons. There are also +3 and -3 buttons on the right side of the display for the same purpose.

To change the meter type, tap the meters on the screen, and the Meter Type menu will appear:

Touch on the type of meter you would like to see. The new meter will instantly appear. If no selection is made, clicking anywhere on the Touch Screen outside of the menu will cause the menu to close.

3.2.1 Choosing the Meter Source

You can select any Input or Output Source to be shown on the Analog VU, Horizontal and RTA Meters.

3.2.1.1 For the Analog VU Meters:

Touch the Monitor Source Selection button that is centered at the bottom of the screen. Before touching the button, it will show the current selection. A Pop-up will appear with two sets of input sources on the left and six sets of output sources on the right.

Tap on the input or output source you need. The meter will reset and the Pop-up will close. The Monitor Source Selection button now shows your new selection. The Pop-up will remain on the screen until you either make a selection, or tap outside of the menu in order to close it.

3.2.1.2 For the Horizontal Meters:

This is the same process, but you can select different sources for each meter pair.

Touch the Monitor Source Selection button that is centered at the top of the screen for the upper meter set or the Monitor Source Selection button that is centered at the bottom of the screen for the lower meter set. Before the buttons are pushed, they will show the current meter selection. A Pop-up will appear with two sets of input sources on the left and six sets of output sources on the right. These are the same options as for the Analog VU meters. Tap on the input or output source you need. The meter will reset and the Pop-up will close.

Use the same procedure for the other meter set. The Pop-up will remain on the screen until you either make a selection, or tap outside of the menu in order to close it.

3.2.1.3 For the RTA Meters

3.2.1.4 For the All I/O Meters

With the All I/O meter page, no selection is needed as all input and output sources are shown. The All I/O page is useful for different reasons. When setting up your routing (explained later) this page gives you a global view of what input channels are active and which

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outputs are receiving audio from at least one source. Please note that the ADAT I/O will not be visible in the All I/O page. The ADAT input meters may be seen in the Test Tone page.

3.3 Getting to the Menu Pages

The in the lower right corner of any Meters page will send you initially to the Home page. Thereafter this will send you to the last Menu page that you accessed.

The bottom of the menu pages has five round buttons which allow you to navigate between menu pages.

The Meter button on the far left returns you to the active meter page. The four buttons on the right select menu pages, each with up to 8 functions.

These five buttons, when pressed, bring up the following pages:

Meters

Immediately changes the screen to the last selected meter set.

Display

Information

Tools

Home

Allows settings that customize the information and format of the LCD Screen.

Displays useful status about Hilo and its operation.

Scene/routing memory and other, well, tools.

Basic settings and routing.

3.3.1 Menu Screen conventions:

When you engage a button, it “lights up”, just as if you are pushing a button on a console. The last button touched or changed will always light up when that Menu page is selected.

Most buttons have a dual purpose. First they display the control’s current setting. Second by touching them, you can select a different setting.

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3.4 Home Menu

3.4.1 Sample Rate

Hilo will display the sample rate that it is currently operating at. If clocked externally, this may be the sample rate being generated by the clock source. If clocked Internally, the sample rate may reflect the rate of audio being played or the rate requested from an audio software application.

If Hilo has the Sync Source set to Internal, then one can manually choose a sample rate by pressing the Sample Rate button and tapping on the desired rate, unless Hilo has a valid USB connection to a computer. In this case, the sample rate needs to be set from the active audio application or as a global setting in the OS.

Note: 176.4 kHz and 192 kHz are available only via USB when the LT-USB is set to 8 channel mode (on the Tools menu page).

3.4.2 Sync Source

This button will show the currently selected Sync Source.

When you push the Sync Source button, you may select any of six possible clock sync options. If a clock source is valid, a sample rate will appear next to that selection. For instance, if a clock source is connected to the Hilo word clock input, next to “Word Clock” there would appear the sample rate that the clock source is generating.

When the LT-USB is NOT connected to the computer, the Sync Source

may be changed to one of the following four choices:

• Internal: Clock driven by the Hilo’s crystal oscillator.

• Word Clock: Clock derived from the WORD CLOCK input.

• Wordclock/2 and Wordclock/4: These are currently not implemented

in the Hilo firmware.

• Digital: Clock derived from the active digital input.

• ADAT In: Clock derived from the ADAT input. Once an ADAT

signal is detected on the Optical Input, Hilo automatically switches the Optical input from S/PDIF to ADAT. In this mode, the additional ADAT inputs appear as available channels on the output mix routing page; meter source selection and the test tone page.

The box next to each clock source will display the clock rate when that port has a valid clock source attached. If that clock source is selected, that rate will become the current clock rate for Hilo. If Hilo detects that a specific Sync Source is not valid, that Sync Source button will be disabled and “Not Present” will be displayed next to it.

Please note: when Hilo is connected to a computer via USB, Sync Source can only be changed by disconnecting the USB cable. In this state the SYNC SOURCE button is crossed out, indicating a disabled parameter.

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3.4.3 SynchroLock

Lynx’s SynchroLock™ technology is a very effective form of jitter reduction for digital signals. Jitter is a type of clock error that may potentially result in distortion in an audio signal. SynchroLock reduces jitter by a factor of 3000:1 by using the Hilo’s high resolution crystal oscillator to generate a clock signal that is phase locked to the external clock.

Locked

Working

Range

Either Hilo is operating off of its Internal clock, or SynchroLock has achieved full lock to the specified external clock source. In this state, playback and recording of audio is possible.

Hilo is operating off of its Analog Phase Lock Loop to lock to the incoming clock signal, while the SynchroLock circuitry is performing analysis on the incoming clock signal. This may continue for 1-2 minutes. In this state, recording of audio is discouraged. Playback is acceptable, but it should be noted that there will be an audible glitch the moment that full lock is achieved. “Working” will occur every time a new Sync Source or Sample Rate is selected unless SynchroLock has been disabled or the Sync Source is set to Internal.

This indicates that the selected external clock signal is operating outside of SynchroLock’s usable range. If this state is persistent, it is advisable to stop using the clock source responsible.

Compare this to attenuation of 100:1 or less for professional quality analog phase-lock loops (PLL) that are used by most Pro Audio devices. As long as the clock frequencies are within +/- 100ppm of Hilo’s supported sample rates, SynchroLock will operate on the clock signal, and insure a low-jitter clock drives the Hilo and is also sent to devices downstream (i.e. clock slaves to the Hilo).

The SynchroLock operation is a two-stage process, starting with a fast-locking analog PLL to insure that there is clock sync immediately when a Sync Source or Sample Rate are selected, and concluding with the digitally controlled crystal-based secondary stage. It is normal for SynchroLock to take 1-2 minutes to achieve full lock.

There are four possible states for the SynchroLock button.

The SynchroLock circuitry has been disabled by the user. In this state, the Hilo will only

Disabled

clock via the Analog PLL when external Sync Sources are chosen. Pressing the SynchroLock button will toggle between Enabled and Disabled. Generally, disabling SynchroLock is not recommended for the best performance.

When Hilo is connected to a computer via USB, SAMPLE RATE and SYNC SOURCE are to be controlled from software, either globally in the OS or from within an audio application, and the SYNCHROLOCK state also should not be altered. Therefore, these three controls will appear “crossed out” whenever the connection to a computer is active. To change these settings manually, one would need to disconnect the USB cable or power down the computer.

3.4.4 Optical Out Mode

Hilo’s Optical inputs and outputs can be used for either stereo SPDIF or 8 channels of ADAT (at 48 kHz). Hilo also supports the S/MUX protocol for ADAT Lightpipe operation at higher sample rates. The ADAT Ports support 4-channels at sample rates of 88.2/96 kHz, and 2-channels at sample rates of 176.4/192 kHz.

This button shows the currently selected status of the Optical Output and allows the selection of either S/PDIF or ADAT. Pushing the button brings up the Pop up window to change the Optical Out mode.

Output on Right.

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3.4.5 Line In Trim

Line In Trim can be set to any of eight preset trim settings. The Line In Trim button shows the currently selected trim level, the same for the Left and Right inputs.

There are four Pro Level settings: +18 dBu; +20 dBu; +22 dBu; and +24 dBu. There are four additional levels most often used on Consumer Audio products: +0 dBV; +2 dBV; +4 dBV and +6 dBV.

When the button is pushed, a Selection Window pops up. Pushing the desired Level button resets the inputs and immediately indicates this on the Line In Button. You will typically hear a relay click from inside Hilo when a selection is made.

Note: These are 0dBFS (full-scale) level settings, as opposed to nominal levels.

Trim pots are available to fine tune these inputs. See Appendix 5.2 for more information.

3.4.6 Line Out Trim

Line Out Trim can be set to any of eight preset trim settings, the same as for Line In.

This works exactly the same as the Line In Trim. Push the button and make your selection.

Note: Each Line In and Line Out Trim can be adjusted ±0.5 dB of the established trim settings using the trim pots that are located on

the bottom of the circuit board. See Section 7.3: Setting Trim Pots for more information.

3.4.7 Digital In Source

Hilo offers a choice of AES or S/PDIF as the digital input source. With S/PDIF you have the option of Coax or Optical Inputs.

Before being pushed, this button shows the current selection. Upon pushing the button, you can select: AES; S/PDIF Coax; or S/PDIF Optical. If selecting SPDIF Optical, the Optical Out mode must be set to SPDIF. See Section 3.4.4.

Note: You do not need to make this choice for outputs, as

all three digital outputs are independently available and assignable.

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