Lynx Studio Technology LynxTWO User manual

Installation and Users Guide
Lynx Studio Technology, Inc.
1048 Irvine Avenue # 468
Newport Beach, CA 92660-4602
www.lynxstudio.com
[email protected]

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Contents
Introduction ............................................................................................................. 4
Before you begin ................................................................................................ 4
Manual Conventions ........................................................................................... 5
Warranty Registration ......................................................................................... 5
Windows 95/98/ME® Installation .......................................................................... 6
Running Setup .................................................................................................... 6
Installing the LynxTWO ..................................................................................... 6
Restarting Your Computer .................................................................................. 6
Windows NT® Installation ..................................................................................... 7
Installing the LynxTWO ..................................................................................... 7
Running Setup .................................................................................................... 7
External Connections .............................................................................................. 8
Analog Audio...................................................................................................... 8
Digital Audio ...................................................................................................... 9
LTC Connections ................................................................................................ 9
Sync Input and Clock Output Connectors .......................................................... 9
Header Connectors ............................................................................................. 9
Using Your LynxTWO ........................................................................................... 10
The LynxTWO Mixer ....................................................................................... 10
Quick Audio Test .............................................................................................. 12
Mixer Reference ..................................................................................................... 13
Mixer Menu ...................................................................................................... 13
Adapter Window ............................................................................................... 13
Record Window ................................................................................................ 16
Play Window .................................................................................................... 16
Outputs Window ............................................................................................... 17
Working with Third Party Applications .............................................................. 18
Compatibility .................................................................................................... 18
LynxTWO Devices ........................................................................................... 18
Controlling Audio Bit Depth ............................................................................ 18
Simultaneous Device and Multitrack Operation ............................................... 19
Configuring Multiple LynxTWO’s ...................................................................... 20
Adapter ID’s in a Multiple Card System .......................................................... 20
Selection of Master and Slave Clocks .............................................................. 20
Cable Connections ............................................................................................ 21
Mixer Settings .................................................................................................. 21
Troubleshooting ..................................................................................................... 22
Support ................................................................................................................... 25
Appendix ................................................................................................................. 26
Specifications ................................................................................................... 26
XLR Connector Wiring and Adapters .............................................................. 28
Connector Pinouts ............................................................................................ 31

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Introduction
Thank you for purchasing the LynxTWO™! We are proud to provide you with a
reliable, professional quality product for your digital audio requirements. This
Installation and Users Guide provides basic information to help you get started.
Before You Begin
Before you begin the installation of your LynxTWO card, we recommend that you
read through the Installation and Users Guide to acquire an overview of the installation
procedure and use of the LynxTWO. You should have a working knowledge of Windows
and general PC concepts. Additionally, refer to your computer’s documentation for
any special instructions regarding the installation of expansion cards and peripheral
equipment.
Contents
Verify that you received the following in the LynxTWO shipping carton:
• LynxTWO PCI Card in cushioned antistatic bag
• LynxTWO Audio Cable (six-foot cable with 8 XLR connectors)
• LynxTWO Sync Cable (two-foot cable with 4 BNC connectors and six-foot
cable with 2 XLR connectors)
• LynxTWO Installation and Users Guide
• Setup Disk for Windows
• Warranty Registration Card
Optional Equipment
The following equipment may be required depending on the configuration of your
system and the type of devices the LynxTWO is connected to:
• Lynx Internal Clock Cable (available from Lynx)
• Lynx Universal Clock Cable (available from Lynx)
• XLR to TRS or XLR to RCA adapter cables (available from Lynx)
System Requirements
Verify that your computer meets or exceeds the following configuration:
• Intel Pentium-class processor or 100% compatible
• Apple Macintosh
• 1 empty PCI Slot
• Video display with 1024x768 resolution
• 32 MB RAM
• Windows 98/ME
• Windows NT/2000
• Macintosh OS 9
Introduction

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Introduction
Manual Conventions
This manual uses the following typographic conventions:
•Underlined text denotes characters that are to be typed using the keyboard.
• ALL UPPER CASE text denotes the names of specific connectors.
• First Character Upper Case text denotes LynxTWO Mixer control names or
menu options.
•Italic text denotes emphasis or a warning.
• Phrases, such as Start > Programs > Lynx Studio Technology, use the greater
than (“>”) sign to separate multiple menu options or icon names that are
selected with a keyboard or mouse action.
Warranty Registration
We are committed to providing you with the best service possible. To help us serve
you better, please be sure to register your LynxTWO using one of the following methods:
1. Fill out and mail the Warranty Registration Card included with your LynxTWO.
2. Use the Online Registration Wizard. To start the wizard, click on Start > Programs
> Lynx Studio Technology > Online Registration Wizard. If you do not have an
internet connection on the computer you installed your LynxTWO in, simply copy
the REGISTER.EXE program from the C:\Program Files\Lynx Studio Technology
folder to a computer with an internet connection and run REGISTER.EXE from
there.
3. Register on the web at:
http://www.lynxstudio.com/support.html
Once you are registered you will automatically receive notifications of new products
and upgrades.
Locating the Serial Number of Your LynxTWO
To register your LynxTWO, you must supply its serial number. The serial number is
located on a label attached to the back of the card and on the shipping carton. You can
also determine the serial number of your card by selecting About Mixer in the Mixer
menu of the LynxTWO Mixer. When registering with the Online Registration Wizard,
the serial number will be automatically entered.

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Windows 95/98/ME® Installation
The procedure for installing the LynxTWO in Windows 95/98/ME requires that the
LynxTWO Setup Program be run before you install your LynxTWO inside your
computer. This program will install the required driver files needed for the Windows
Plug-and-Play configuration manager to recognize the LynxTWO as a new device and
will install the LynxTWO Mixer application.
Running Setup
1. With your computer running Windows 95/98/ME, insert the 3½” floppy supplied
with your LynxTWO into your computer’s floppy disk drive.
2. Select “Start” from your system menu, then “Run…”.
3. Type A:\SETUP.EXE into the Run window and select the OK button.
4. The “LynxTWO Windows 95 Driver Installation Wizard” will appear.
5. After reading the instructions on the screen, press “Continue”.
6. The Driver Installation Wizard will copy all of the files needed to the appropriate
directories.
7. When the “Installation Complete” message appears, read the instructions on the
screen, then press “Shutdown”.
Installing the LynxTWO
1. Turn OFF the power to your computer system and disconnect the power cords.
2. Touch a metal plate on your computer system to ground yourself and discharge
any static electricity.
3. Remove the cover from your computer system case. You should refer to your
computer system documentation for any special instructions on installing expansion
cards and peripheral equipment.
4. Find an empty PCI slot in your computer.
5. Unscrew and remove the slot cover from your selected PCI slot.
6. Remove your LynxTWO from its static bag and gently insert it into the selected
PCI slot. Press it down firmly so that the contacts are securely seated in the slot.
7. Secure the LynxTWO card with the screw removed from the slot cover.
8. Replace the computer system case and plug in your computer.
9. Connect the L2Audio and L2Sync cables to the LynxTWO. See the External
Connections section for more information.
Restarting Your Computer
1. Turn on your computer and start Windows.
2. After the Windows logo splash screen is complete, the Plug-and-Play configuration
manager will display a “Found New Hardware” message.
3. Windows will ask where the driver is located. You should enter:
C:\Windows\System
Then click on “OK”.
4. Depending on your hardware setup, Windows may need to restart before
proceeding.
5. Please read the “Release Notes” in the startup menu “Lynx Studio Technology”
group.
Installation

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Windows NT® Installation
The procedure for installing the LynxTWO in Windows NT requires that you install
your LynxTWO inside your computer before the LynxTWO Setup Program is run.
This program will install all the required driver files and the LynxTWO Mixer application
as well as configure your system to recognize the LynxTWO.
Installing the LynxTWO
1. Turn OFF the power to your computer system and disconnect the power cords.
2. Touch a metal plate on your computer system to ground yourself and discharge
any static electricity.
3. Remove the cover from your computer system case. You should refer to your
computer system documentation for any special instructions on installing expansion
cards and peripheral equipment.
4. Find an empty PCI slot in your computer.
5. Unscrew and remove the slot cover from your selected PCI slot.
6. Remove your LynxTWO from its static bag and gently insert it into the selected
PCI slot. Press it down firmly so that the contacts are securely seated in the slot.
7. Secure the LynxTWO card with the screw removed from the slot cover.
8. Replace the computer system case and plug in your computer.
9. Connect the L2Audio and L2Sync cables to the LynxTWO. See the External
Connections section for more information.
Running Setup
1. With Windows NT running, insert the 3½” floppy supplied with your LynxTWO
into your computer’s floppy disk drive.
2. Select “Start” from your system menu, then “Run…”.
3. Type A:\SETUP.EXE into the Run window and select the OK button.
4. The “LynxTWO Windows NT Driver Installation Wizard” will appear.
5. After reading the instructions on the screen, press “Continue”.
6. The Driver Installation Wizard will copy all of the files needed to the appropriate
directories.
7. When the “Installation Complete” message appears, read the instructions on the
screen, then press “Close”.
8. Please read the “Release Notes” in the startup menu “Lynx Studio Technology”
group.
Installation

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External Connections
The LynxTWO includes two break-out cables that provide connections for external
equipment. The L2Audio cable provides XLR connectors for analog audio signals.
The L2Sync cable provides XLR connectors for digital audio signals and female BNC
connectors for clock input and output.
Two bracket mounted D-connectors provide connection ports for the break-out cables:
the L2Audio Port is a 25-pin female D-connector and the L2Sync port is a high-density
15-pin female D-connector.
Referring to figure above, locate the L2Audio Port and the L2Sync Port on the mounting
bracket of the LynxTWO. Insert the L2Audio cable into the L2Audio Port and tighten
the thumb screws on the cable shell. Insert the L2Sync cable into the L2Sync Port and
tighten the thumb screws on the cable shell.
Use of both cables is not a requirement. If you will be using only the analog audio
capabilities of the LynxTWO, for example, there is no reason to connect the L2Sync
cable.
Analog Audio
The XLR connectors on the Audio Cable, labeled IN 1, IN 2, IN 3, IN 4, OUT 1, OUT
2, OUT 3 and OUT 4, are used to connect balanced and unbalanced analog equipment
to the analog inputs and outputs of the LynxTWO. Make connections to professional
consoles and other balanced equipment directly with these connectors. Connect to
balanced equipment with ¼” TRS jacks using XLR-to-TRS adapters such as the Lynx
CBL-XF2TM18 (female XLR) and the Lynx CBL-XM2TM18 (male XLR). Connect
to unbalanced consumer devices with RCA jacks using XLR-to-RCA adapters such as
the Lynx CBL-XF2RM18 (female XLR) and the Lynx CBL-XM2RM18 (male XLR).
Adapters with line transformers are not required. Refer to the “XLR Connector Wiring
and Adapters” section for information regarding XLR adapter construction.
The nominal analog signal levels are compatible with either professional or consumer
equipment. Use the Trim controls on the LynxTWO Mixer application to select +4dBu
for balanced professional devices or –10dBV for balanced or unbalanced consumer
devices.
External Connections
Heade
r
LStream 2
Port
Heade
r
CLOCK IN
Port
Heade
r
CLOCK OUT
Port
L2Audio Por
t
L2Sync Port
TWO

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Please note that with 16 dB of headroom, the LynxTWO’s analog outputs are capable
of delivering +20 dBu signal levels. It is important to verify that the equipment you
are driving is capable of handling these signal levels in order to prevent clipping or
possible damage.
Digital Audio
The XLR connectors on the L2Sync Cable, labeled DIGITAL IN and DIGITAL OUT
are used for AES/EBU and S/P DIF digital audio connections. Connect AES/EBU
devices directly and select AES/EBU Digital Format in the LynxTWO mixer application.
Connect to S/P DIF devices using XLR-to-RCA adapters such as the Lynx CBL-
XF2RM18 (female XLR) and the Lynx CBL-XM2RM18 (male XLR). Select S/P DIF
Digital Format in the LynxTWO mixer application. Refer to the “XLR Connector Wiring
and Adapters” section for information regarding XLR adapter construction.
LTC Connections
Two BNC connectors on the L2Sync Cable, labeled LTC IN and LTC OUT are used to
connect to the LynxTWO’s LTC reader and generator.
Sync Input and Clock Output Connectors
Two BNC connectors on the L2Sync Cable, labeled SYNC IN and CLOCK OUT are
used to synchronize the LynxTWO with external equipment. The connectors support
TTL or Composite Video level signals and should be connected with 75-ohm coaxial
cable. Connect the SYNC IN connector to the clock output or video output of an external
device and select External as the Sample Clock Source in the LynxTWO mixer. Adjust
the clock Reference to match the incoming clock type.
CLOCK OUT is a word clock that tracks the sample rate of the LynxTWO. Connect
this output to the word clock input of an external device.
Header Connectors
The Header connectors labeled CLOCK IN and CLOCK OUT are used to synchronize
the LynxTWO with equipment located inside your computer. For systems containing
multiple LynxTWO’s, these connectors are utilized to synchronize the sample clocks
of each card. The connectors support TTL level signals and should be connected using
the Lynx Internal Clock Cable, Lynx Universal Clock Cable or similar 75-ohm coaxial
cable.
Connect the CLOCK IN connector to the clock output of an internal device and select
Header as the clock source in the LynxTWO mixer. Adjust the clock Reference to
match the incoming clock type.
The signal on the CLOCK OUT header is a word clock that tracks the sample rate of
the LynxTWO. Connect this output to the word clock input of an internal device or
another LynxTWO.
External Connections

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Using Your LynxTWO
With the LynxTWO and its drivers properly installed in your computer, you can begin
to use its capabilities with any third party audio application running under Windows or
ASIO compliant applications under Macintosh OS. In order for these applications to
access the LynxTWO you must select one of the LynxTWO audio devices in an
application’s configuration menu for audio or wave. Refer to the “Working with Third
Party Applications” section for more information regarding device selection.
Prior to audio recording or playback, you should also use the LynxTWO Mixer
application to adjust the Trim and Digital Format to match the equipment connected to
your LynxTWO. Failure to do so may result in improper operation or damage to
external equipment.
The LynxTWO Mixer
The LynxTWO Mixer, which is installed during setup, provides software control of the
features of the LynxTWO and a visual indication of audio signal level during recording
and playback.
It can be used dynamically to change operational settings of the LynxTWO, but in
most cases once the settings are configured for a particular studio installation they
require no adjustment.
Starting the Mixer
After installation, the LynxTWO Mixer icon , will appear on the Windows task
bar in the lower right corner of your screen. By double clicking on this icon with your
left mouse button, the LynxTWO Mixer will launch. Alternatively, a single click with
your right mouse button on this icon will open a menu that provides access to basic
mixer controls and an “Open Mixer” selection that will also start the mixer.
If the icon does not appear on the Windows task bar, the LynxTWO mixer can be
started be selecting Start > Programs > Lynx Studio Technology > Mixer.
General Operation
If you are simply recording and playing digital audio without synchronizing to an external
clock source, you can begin using the LynxTWO by simply setting the analog Trim
level and/or the Digital Format if required. Input monitoring can be enabled by selecting
the desired Monitor Source and then clicking the Monitor buttons on the Analog and/
or Digital Out panels.
Typically, it is convenient to keep the Mixer running on your Windows desktop to
monitor signal levels or to allow instant access to Mixer controls requiring dynamic
changes. The Mixer can be forced to appear on top of other applications by selecting
the “Always On Top” option in the Settings pull-down menu.
For further information about the LynxTWO Mixer controls refer to the “LynxTWO
Mixer Reference” section for a complete description.
Using Your LynxTWO

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Mixer Configuration Recall
The state of the Mixer settings are saved each time Windows is shut down. The stored
settings are automatically recalled the next time Windows is restarted.
Clock Source Requirements
A valid clock source signal must be connected to the appropriate LynxTWO clock
connector when the Sample Clock Source is set to either Digital, External, or Header.
If a signal is not present, the sample clock generator will run very slowly or erratically.
Symptoms of this problem include audio files that sound either fast, slow or garbled.
When a valid clock source is present, the frequency and type of clock signal must
match the Sample Clock Reference setting selected in the Mixer. The frequency of
word clock sources, chosen by setting the Sample Clock Source/Reference to either
Digital/Auto, External/Word, or Header/Word, must match the sample rate specified
when recording new files or the sample rate associated with a previously recorded file
during playback. For example, if a 44.1 kHz word clock is connected to the external
clock input, the Sample Clock Source/Reference must be set to External/Word and the
sample rate must be set to 44.1 kHz when a new file is being recorded in an application.
Failure to do so will result in files being recorded at the wrong sample rate.
Volume Faders and Signal Quality
The faders in the LynxTWO Mixer perform digital attenuation on audio signals in the
digital domain. The attenuation is applied to the digitized signals just prior to the D/A
converters.
As with any digital signal processing function, the digital attenuation calculations used
by the LynxTWO can introduce arithmetic errors that can add small amounts of noise
to signals. To insure the highest signal quality it is highly recommended that the
faders be left in their maximum position during critical recording and playback. In
this position, no attenuation calculations are performed.
Mono Recording and Playback Operation
When recording a file in mono, the LynxTWO will provide an audio signal from the
left channel only. The audio signal from right channel is not used. When playing back
a file in mono, the LynxTWO will send the signal to both the left and right outputs. To
force playback on a single output, turn up the volume for the desired output, and turn
down the volume for the output to be muted.
Using Your LynxTWO

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Using Your LynxTWO
Windows Quick Audio Test
The installation of your LynxTWO can be tested using the LynxTWO Mixer and the
Sound Recorder application that ships with Windows 95/98/ME and Windows NT/
2000. Any other audio application capable of audio recording and playback can be
used in a similar manner.
1. Connect a stereo analog signal source to the IN 1 and IN 2 connectors on the
Audio cable.
2. Connect the OUT 1 and OUT 2 connectors to an amplifier or mixer capable of
delivering an audio signal for listening via headphones or speakers.
3. Open the LynxTWO Mixer by double clicking on the mixer icon.
4. In the LynxTWO Mixer, set the Trim to either +4 dBu or -10 dBV to match the
signal level of the connected equipment.
5. In the LynxTWO Mixer Record Panel, route the Record 1 Left & Right signal
from the Analog In 1 & 2 to the Analog Out 1 & 2. This is done by pressing the “1”
button for Record 1 Left and pressing the “2” button for Record 1 Right. Unmute
the Monitor Mute buttons for both the left and right channels. You should hear the
signal from the audio source which is connected to the analog inputs. If this is not
the case, check your connections.
6. Disable input monitoring by again clicking on the Mute buttons on the Record 1
device. After doing so, the buttons should look like they are in the “out” or non-
depressed position.
7. Start Sound Recorder by clicking Start > Programs > Accessories > Multimedia >
Sound Recorder. Position Sound Recorder on your screen so it be easily viewed
along with the LynxTWO Mixer.
8. In Sound Recorder, select the LynxTWO’s audio devices by opening the Edit
menu and selecting Audio Properties. Select LynxTWO Play 1 as the Preferred
device for playback and LynxTWO Record 1 as the Preferred device for recording.
9. Record a short sample by clicking the red record button followed by the stop
button in Sound Recorder. During recording, you should observe a graphic display
of the waveform being recorded in the center display in Sound Recorder. You
should also see activity on the Record 1 peak meters of the LynxTWO Mixer.
10. Playback the test sample by clicking the play button in Sound Recorder. During
playback, you should observe a graphic display of the waveform being played in
Sound Recorder. You should also hear the recorded audio and see activity on the
Analog Out peak meters of the LynxTWO Mixer.
If the test did not operate as described or you received any errors, please refer to the
“Troubleshooting” section of this manual.

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Mixer Reference
The LynxTWO Mixer provides complete software control of the audio features of the
LynxTWO and an indication of signal level during recording and playback. This section
describes the function of each menu and control of the mixer.
Mixer Menu
With one LynxTWO installed in your computer the first selection in the Mixer Menu
will be “LynxTWO Mixer” proceeded by a check mark. With more than one LynxTWO
installed in your computer, the Mixer Menu will list each LynxTWO with a numeric
suffix, and allow you to select which card is being controlled by the Mixer application.
A check mark will appear next to the currently selected LynxTWO. Refer to the section
on “Configuring Multiple LynxTWO’s” for a more information regarding the use of
multiple cards.
Adapter Window
Sample Clock – This section of the LynxTWO mixer provides control of the sample
clock source and reference. Since the sample clock is the master timing source, all
LynxTWO audio devices on a single card must have identical sample rates. Sample
clock settings cannot be changed if any LynxTWO audio device is playing or
recording.
Source – Allows selection of the sample clock source from one of the following:
Internal – Clock derived from the on-board crystal oscillator.
Digital – Clock signal from the DIGITAL IN connector on the L2Sync cable.
The Digital Format control must be correctly selected when selecting
this clock source.
External – Clock signal from the SYNC IN connector on the L2Sync cable.
Header – Clock signal from the board-mounted CLOCK IN header.
Video – NTSC or PAL composite video signal from the SYNC IN connector
on the L2Sync cable.
LStream 1 – Clock signal from the LStream port on the L2Sync connector.
LStream 2 – Clock signal from the LStream port on the board mounted header.
Reference – Provides selection of the clock source reference type from one of the
following:
Auto – Automatic selection. Valid for Internal and Digital clock sources.
13.5MHz – 13.5MHz video dot clock. Valid for External and Header clock
sources.
27MHz – 27MHz video dot clock. Valid for External and Header clock
sources.
Word – Word clock. Valid for External and Header clock sources.
Word256 – 256 times word clock. Valid for External and Header clock sources.
Mixer Reference

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Rate – Displays the current sample clock rate of the LynxTWO. When the Sample
Clock Source/Reference are set to Digital/Auto, External/Word, External/
Word256, Header/Word, or Header/Word256 the displayed sample rate must
match the rate of the incoming clock being used for synchronization. This
will ensure the correct sample rate is stored in the file’s WAV header, and that
audio will playback at the correct sample rate.
Digital Format – Allows selection of either AES/EBU or S/P DIF formats for Digital
In and Digital Out.
Digital Mode – Selects the mode for the Sample Rate Converter on the Digital Input.
SRC On – Default. The sample rate converter is on.
SRC Off: Clock Synchronous – Turns off the sample rate converter and indicates
that the digital input and digital output clocks are synchronous. This mode is
useful when the digital output is feeding the digital input either directly or
through an external device with no sample rate converter.
SRC Off – The sample rate converter is off. When in this mode the Sample Clock
Source must be set to Digital. Use this mode when recording non-audio formats
such as Dolby Digital, DTS or others formats that require bit-perfect transfers.
SRC On: Digital Out – The sample rate converter is turned on, but it is used by
the Digital Output instead of the Digital Input. The Digital Input sample rate
will determine the actual rate of the Digital Output. This mode is useful when
sending audio to external equipment at a different rate than it was recorded.
Transmit Only – Disables the Digital Input and the sample rate converter.
Digital Input Status – Displays real-time status of the digital input, updated 4 times a
second.
Digital In Rate – Displays the measured rate of the incoming digital signal.
SRC Ratio – Indicates the sample rate conversion ratio in SRC On mode.
Digital In Mode – Displays real-time status of the digital input. Professional status
is generally associated with an AES/EBU signal, and consumer status is
generally associated with an S/P DIF signal.
Analog Trim – Sets the nominal analog input and output levels for the LynxTWO to
either +4dBu or -10dBV. Four controls are provided, each for a pair of inputs and
outputs.
Frequency Counters – Displays the real-time clock frequency for the following sources:
L/R Clock – Left/Right Clock, which is the currently selected sample rate.
Digital Input – This is the same clock as the Digital In Rate above.
External – Clock signal from the SYNC IN connector on the L2Sync cable.
Header – Clock signal from the CLOCK IN header connector.
Video – Composite video signal from the SYNC IN connector on the L2Sync
cable. 15.734kHz for NTSC or 15.625kHz for PAL.
LStream 1 – Clock signal from the LStream port on the L2Sync connector.
LStream 2 – Clock signal from the LStream port on the board mounted header.
PCI Bus – The speed of the PCI Bus of the host computer.
Mixer Reference

Page 15
LTC Input – This section of the LynxTWO Mixer provides control of the Longitudinal
Timecode Receiver.
Enable – When checked, the LTC Receiver is enabled.
Lock – When lit, indicates the LTC Receiver is locked to an incoming signal.
Direction – Indicates the direction of the timecode from the LTC Receiver.
Drop Frame – Indicates if drop frame is specified for the incoming signal.
Frame Rate – Indicates the actual frame rate of the LTC Receiver.
Position – Indicates the last frame position decoded from the LTC Receiver.
LTC Output – This section of the LynxTWO Mixer provides control of the Longitudinal
Timecode generator.
Enable – When checked, the LTC generator is enabled.
Frame Rate – Provides selection of the frame rate of the LTC generator. Allowed
rates are 24, 25, 29.97 and 30 fps.
Drop Frame – Used to indicate drop frame for 29.97 and 30 fps frame rates.
Position – Used to enter the starting position for the LTC generator and display
the current timecode position when the generator is enabled.
Recalibrate Converters – Used to calibrate DC offset of the A/D and D/A converters.
When the LynxTWO driver first loads, the converters are calibrated for optimum
fidelity. Over time temperature changes inside your computer may cause the DC
offset to drift slightly. Because of this, Lynx recommends recalibration 15 to 30
minutes after your computer has been turned on and whenever significant changes
in room temperature occur.
Dither Type – Provides selection of the type of dither used on all record channels.
The selection may be one of the following:
None - Dither is disabled. Volume processing utilizes rounding prior to truncation.
Triangular - Enables the addition of triangular probability density dither. This
type of dither is free of data-dependent noise modulation effects, but decreases
signal-to-noise ratio by 4.8 dB. Triangular is the preferred dither type in most
cases.
Shaped Triangular - Enables the addition of shaped triangular probability density
dither. This type of dither is essentially a high-pass filtered triangular dither
that places most of the dither energy at higher frequencies making it less
audible to the human ear. Shaped triangular dither also decreases signal-to-
noise ratio by 4.8 dB.
Rectangular - Enables the addition of rectangular probability density dither. This
type of dither decreases the signal-to-noise ratio by 3 dB (less than triangular),
but is less desirable because of its noise modulation effects.
Mixer Reference

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Mixer Reference
Record Window
Record Source Selection – Provides selection for the source of each associated record
channel. Each channel may take its source from any one of the 24 available inputs.
Peak Meters – Displays the instantaneous level of the audio being sent to the LynxTWO.
Mute – Provides a mute function for each associated input.
Dither – Enables / Disables dither for each associated input. The Dither type is specified
in the Adapter window.
Monitor Section
Output Selection – Provides buttons for routing input channels to output channels
for monitoring. Each button represents a physical output on the LynxTWO.
Volume Faders – Controls digital attenuation of the audio being monitored. No
volume adjustment for the signal being recorded is available.
Mute – Provides a mute function for each associated monitor channel.
Phase – Inverts the phase for each associated monitor channel.
Device Format – Displays the bit-depth and number channels in use on this device.
This is set by the audio application using each record device and is provided for
reference purposes only.
Activity Indicators – The names at the bottom of the Record and Play windows reflect
the name of its associated wave device. When a device is inactive its name is
shown as blue text. When a device is active (currently open for play or record) its
name appears in red text.
Play Window
Output Selection – Provides buttons for routing play device channels to output channels.
Each button represents a physical output on the LynxTWO.
Volume Faders – Controls digital attenuation of the audio being played.
Mute – Provides a mute function for each associated play device channel.
Phase – Inverts the phase for each associated play device channel.
Device Format – Displays the bit-depth and number channels in use on this device.
This is set by the audio application using each play device and is provided for
reference purposes only.
Activity Indicators – The names at the bottom of the Record and Play windows reflect
the name of its associated wave device. When a device is inactive its name is
shown as blue text.

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Mixer Reference
Outputs Window
Overload Indicator – Provides instantaneous overload indication of the audio being
played or monitored. Once an overload condition has occurred the overload
indicator remains until reset manually by the user by clicking on the control.
Peak Meters – Displays the instantaneous level of the audio being played or monitored.
Volume Faders – Controls digital attenuation of the audio being played or monitored.
This control acts on the digital signals before D/A conversion. With the volume
fader at its maximum position, the vertical line within the fader turns black, no
volume calculation is performed and the audio stream is unaltered. This is the
recommended position for critical recording and mixdown sessions in which
the highest signal quality is required. Volume control processing is done prior to
peak meter readings causing the peak meters to reflect any volume control changes.
Since volume changes act on the digitally converted signals, they have no effect
on the analog full-scale input and output levels. This must be done with the Trim
control. When the volume fader is not at its maximum or minimum position, the
vertical line within the fader turns red to indicate that the volume control is active.
Mute – Provides a mute function for each associated output.
Phase – Inverts the phase for each associated output. This is a master control and
overrides the phase controls for any record monitor or play channel assigned to
this output.
Dither – When pressed, enables the addition of triangular probability density dither
for each associated output.

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Working with Third Party Applications
Working with Third Party Applications
Compatibility
The drivers included with your LynxTWO provide compatibility with all standard third
party audio editing applications that communicate with Windows Wave audio,
DirectSound and ASIO devices. A list of applications that have been tested for
compatibility is provided on the Lynx web site at http://www.lynxstudio.com/swlist.html.
LynxTWO Devices
Third party applications communicate with the LynxTWO through its installed driver.
The driver presents the LynxTWO’s audio capabilities to applications as standard
multimedia, DirectSound or ASIO devices.
Selection of these devices is the control mechanism used to route audio between an
application and the inputs and outputs of the LynxTWO. In other words, in order to
record from the LynxTWO’s digital input, for example, you must select the LynxTWO
Digital In as the record device in an application.
Most, if not all, third party applications provide device selection in configuration,
options, or preference setting windows or menus. For two channel or stereo audio
applications, a separate selection option is typically provided for the input or recording
device and the output or playback device. Multitrack applications provide multiple
input and output device selection menus or windows. Refer to the documentation
included with your application to determine how to select audio devices.
With the LynxTWO properly installed in your computer, the digital audio devices will
be available to applications, and their names will appear in their device selection menus
as follows:
LynxTWO Record 1 LynxTWO Play 1
LynxTWO Record 2 LynxTWO Play 2
LynxTWO Record 3 LynxTWO Play 3
LynxTWO Record 4 LynxTWO Play 4
LynxTWO Record 5 LynxTWO Play 5
LynxTWO Record 6 LynxTWO Play 6
LynxTWO Record 7 LynxTWO Play 7
LynxTWO Record 8 LynxTWO Play 8
When more than one LynxTWO is installed in your system, the device names will
contain a numeric adapter ID assigned by the operating system. For example, the analog
output device on adapter 2 would be listed as “LynxTWO 2 Record 1”. Refer to the
“Configuring Multiple LynxTWO’s” section for more information regarding this topic.
Controlling Audio Bit Depth
Creating a audio file with a particular bit depth (or resolution) is controlled through an
application’s recording settings. These settings are typically adjusted in an audio device
configuration menu or in a recording setup window just prior to recording. When
recording is initiated the LynxTWO will generate audio samples of the desired resolution.

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Working with Third Party Applications
Bit depth control during playback of an audio file is also an application issue. When a
file is played, the recorded bit depth is read from the file’s header by the application.
The application uses this information to set the resolution of the LynxTWO.
The LynxTWO supports file types with 8, 16, 24, or 32 bit word widths. Note that 32-
bit files contain 24-bit data with zero data in the least significant bit positions.
The LynxTWO Mixer application displays the currently selected bit depth for each
device just above the device name in the Record window and the Play window.
Simultaneous Device and Multitrack Operation
The sixteen audio devices of the LynxTWO operate completely independent in terms
of whether they are in recording or playback modes and their associated audio files.
This implies that the devices can operate simultaneously and support the so-called
“full-duplex” mode where, for instance, the LynxTWO Record 1 device is recording
while the LynxTWO Play 1 device is playing.
Although the devices act independently, when multiple devices are being used to record
or play multiple audio files simultaneously, the LynxTWO driver has the capability to
synchronously start all devices with sample accuracy. This is especially important for
maintaining synchronization during playback of multiple devices and overdubbing.
By using all of the record and play devices, sixteen track recording and playback is
possible. Again, control of this multi-channel operation is simply a matter of device
selection in any compatible multitrack audio application.

Page 20
Configuring Multiple LynxTWO’s
Configuring Multiple LynxTWO’s
More than one LynxTWO card can be installed in a computer for additional audio
channels. If required, all LynxTWO’s in a computer can be configured to maintain
sample accurate synchronization during digital audio recording and playback.
Cards are synchronized in a master-slave arrangement. One card is selected as the
master which provides the word clock source for the other slave cards in the system.
From the master, the word clock signal is daisy-chained from one slave to the next.
Word clock signals can be connected internally using the Internal Clock Cable, which
is available from Lynx. The CLOCK OUT header of one card is connected to the
CLOCK IN header of the next card. A separate cable is required for each slave card in
the system.
Alternatively, the SYNC IN and CLOCK OUT connectors on the L2Sync cable can be
connected externally with a standard 75 ohm BNC cable.
Adapter ID’s in a Multiple Card System
When multiple LynxTWO cards are installed in a computer they are automatically
assigned unique adapter ID numbers. These adapter ID’s provide a means to identify
and communicate with each LynxTWO when using the LynxTWO Mixer application
and to select audio devices in third party applications.
In the LynxTWO Mixer, the adapter that a user wishes to control is selected from the
Mixer pull-down menu. In a system with four LynxTWO’s the adapters will be listed
as follows:
LynxTWO 1 Mixer
LynxTWO 2 Mixer
LynxTWO 3 Mixer
LynxTWO 4 Mixer
In each case, the adapter ID is the numeric character in each selection.
Most third party applications provide a setup or configuration menu for selecting a
desired wave audio device for recording and playback. With multiple LynxTWO’s in a
system, each device name will contain the adapter ID. For example, the first play
device on adapter 2 would be listed as “LynxTWO 2 Play 1”.
Selection of Master and Slave Clocks
In order to select master and slave LynxTWO’s in a system, each adapter ID must be
first physically associated with a LynxTWO installed in a computer slot. Since ID
assignment is automatic, determining this association is somewhat trial and error. The
procedure is as follows:
1. Connect at least one analog output channel of each LynxTWO to an amplifier,
mixing console or other equipment that will provide audio monitoring.
2. Choose an audio application that allows selection of wave audio devices for audio
playback.
3. Select “LynxTWO 1 Play 1” as the playback device.