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Lynx Studio Technology FAQ

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FAQ Navigation:

Getting Started/Installation

	How do I install the E22/E44 card?
	What do I need to connect multiple cards to a system?
	What is the proper sequence of installing the card, firmware, and driver?
	How do I update my firmware?
	How to install driver on Big Sur

General FAQ

	What is the process to update the drivers and firmware?
	Is there a way to change the input level of audio coming into the E22/E44?
	How do I use the Lynx Mixer for input monitoring?
	Can I use the E22/E44 in a Thunderbolt expansion chassis?
	PCI Express cards Apple Big Sur and Apple Silicon M1 support

Troubleshooting

	I want to record signals from a digital input but its not working
	I cannot change the clock source in the Lynx Mixer - it keeps reverting back to the previous setting
	I get clicks and pops when I increase my sample rate to 96k. Is there a compatibility problem?
	The firmware updater for the E22/E44 failed. How do I get the card to be seen by my computer?
	Driver signing error in Windows 10
	How to resolve dropouts when playing or recording
	Inputs cannot be recorded in macOS 10.14: Mojave
	In macOS 10.13 or above, drivers were installed but the device does not appear to OS. Lynx Mixer will not launch.
	Windows 10 Installation - error message during install: DIFXAPI_Error - PnP Install Failed

Lynx E22/E44

How do I install the E22/E44 card?

STEP 1: Hardware Installation

Turn OFF the power to your computer system and disconnect the power cords.
Touch a metal plate on your computer system to ground yourself and discharge any static electricity.
Remove the cover from your computer chassis and select an empty PCIe slot in your computer.
You should refer to your computer system documentation for any special instructions on installing expansion cards and peripheral equipment.
Unscrew and remove the slot cover from your selected PCIe slot. Note: The E22/E44 can be installed into any type or size of PCIe slot, from x1 to x32.
Insert the Lynx card into the selected PCIe slot and press it down so that the contacts are securely seated.
Secure the bracket of the Lynx card to the computer chassis using a chassis screw or retaining bracket.
Replace the computer chassis cover and reconnect the power cord.
Connect the Audio cables to the Lynx card. See the E22/E44 User's Guide for more information.

STEP 2: Installation Files

All Necessary driver files can be found in the Support>Downloads section of the Lynx Studio website

Lynx E22/E44

What do I need to connect multiple cards to a system?

Up to six Lynx PCIe and Thunderbolt devices can be installed in a single computer and utilized by a single application. If multiple devices are added initially the driver will find and connect to them all. Even if devices are added later, they will automatically be mounted by an installed driver.

It is crucial to establish a Master/Slave clock relationship so that all cards are operating off of the same sample clock. Either an external clock source should be used that provides sample clock to all of the cards via their word-clock or digital in connections, or our CBL-ICC Internal Clock Cable should be used to synchronize the card's sample clocks. If an external clock source is used, the clock source for each card should be set to the appropriate source (either "Digital" or "External") from the Lynx Mixer Adapter page - there will be one tab in the Lynx Mixer for each card.

If our CBL-ICC cable is used to synchronize the cards internally, one card acts as the master to supply a clock signal to the other slave cards in the system. Generally, the card that is identified in the operating system as card #1 should be selected as the master. This allows software applications to still send sample rate change messages down to all the cards. Starting with the master card, connect the cable from its "Clock Out" header connector to the "Clock In" connector on the next card. Continue the clock "daisy chain" by connecting the "Clock Out" to "Clock In" for the remainder of the cards. From the Lynx Mixer, set the sample clock source on the Adapter page for the master card to the appropriate clock source ("Internal", "Digital", etc.). For the slaves, set the sample clock source to "Header".

Within operating system, each Lynx card will be identified by a unique adapter ID number (i.e. E22 1, E44 2, etc.) so you can choose record and play channels appropriately. Please refer to the "Configuring Multiple Lynx Cards" section of your user manual for more information

In a Windows system, all of the I/O will appear automatically as an ASIO device with the number of channels that is a sum of the cards installed. In OSX, an aggregate device must be created to use the I/O from multiple cards within a single application. Here are the steps:

Go to Audio Midi setup from Applications > Utilities
Click the "+" in the bottom left to create a new aggregate device.
Click the checkbox for card #1, and then the one for card #2 in the right pane
Uncheck drift for device # 2 (it should be off for both)
Rename the aggregate device if you wish
Select the aggregate device from with your DAW

Lynx E22/E44

What is the proper sequence of installing the card, firmware, and driver?

Install card
Install driver
Check Lynx Mixer > About for firmware version on card. Update firmware if it is not already current.

Lynx E22/E44

How do I update my firmware?

First make sure that the drivers are installed and functional. Launch the Lynx Mixer to insure that it opens without problems. To update your Lynx card's firmware, make sure that all audio applications and the Lynx Mixer are closed. Then launch the firmware updater file downloaded from the Lynx support page and follow the prompts. You will need to shut off the computer after successfully flashing the firmware.

Lynx E22/E44

How to install driver on Big Sur

It is imperative that you start by updating macOS 11 Big Sur to the latest version. Early versions of Big Sur would not load kernel extensions properly, so trying to install the driver on a system without the latest updates from Apple would be pointless.

Check and make sure you have the latest version of Big Sur.

Click on the Apple icon, then select System Preferences

Select Software Update

Allow the system to update to the latest version

After the operating system is completely up-to-date, please follow these step by step instructions to check the installation of the driver on macOS 11 Big Sur.

Download driver from Lynx web site.

Open the ZIP file.

Open Installer Package: Lynx_macOS.pkg.

Click Continue

To accept the license agreement, click Continue

Next click Install

The driver will install automatically.

If the Macintosh has an M1 processor, you may be prompted to enable system extensions in the Recovery environment. If this not an M1 processor, or if system extensions have already been enabled, skip down to "System Extension Updated".

If so, click on Shutdown. and restart the Macintosh in the recovery environment by holding down the power key an continuing to hold down the power key until the recovery environment starts.

Click on Security Policy...

Select "Reduced Security" and make sure "Allow remote management of kernel extension and automatic software updates" is checked. Next click on OK and restart the Macintosh.

You will see the "System Extension Updated" message, click on "Open Security Preferences"

The Security & Privacy page will display and shows that "System software from developer" needs to be allowed.

Click on the "Lock" icon to unlock the panel.

Next click on the "Allow" button to allow the driver to load.� The system should prompt you to restart.

Click the "Restart" button to restart the Macintosh and the driver installation is now complete.

Lynx E22/E44

What is the process to update the drivers and firmware?

Windows:

Close all audio apps and the Lynx Mixer
Click Start > All Programs > Lynx Studio Technology > Uninstall Lynx Driver
Reboot when prompted
Download and install the current driver build
Download and install the current firmware updater
Shut down computer when prompted.

macOS:

Close all audio apps and the Lynx Mixer
Download the current driver build
The driver elements will be extracted to a folder called Lynx_OSX_XXX. Whitin that folder is a file called "Uninstall Lynx Driver". Run this program and reboot when prompted
Return to the Lynx_OSX_XXX folder and click Lynx_OSX.pkg to run the driver installer
Reboot when prompted
Download and install the current firmware updater
Shut down computer when prompted.

Lynx E22/E44

Is there a way to change the input level of audio coming into the E22/E44?

In the interest of the highest quality, bit-perfect Analog to Digital conversion, it is not possible to adjust input levels with the E22/E44. Instead, output levels should be set from your signal source to achieve optimal recording levels.

Lynx E22/E44

How do I use the Lynx Mixer for input monitoring?

That is best answered with this video

Lynx E22/E44

Can I use the E22/E44 in a Thunderbolt expansion chassis?

Yes. The E22/E44 will work in a certified Thunderbolt to PCI Express expansion chassis. We have tested the Sonnet, Magma and Akitio chassis and found them to be excellent solutions. The mLogic mLink chassis will not work because the card will not physically fit into the chassis.

Lynx E22/E44

PCI Express cards Apple Big Sur and Apple Silicon M1 support

The AES16e, E22 and E44 are currently supported on Big Sur with both the Intel and Apple Silicon M1 chip.

Lynx E22/E44

I want to record signals from a digital input but its not working

A few things to consider:

Make sure that the Digital input format is set to the type that corresponds with your signal source. Choices are AES or SPDIF Coax. The default is AES, if your source is SPDIF, you need to change the following things on the card. Use jumpers JP701 and JP702 to set the mode, and switch SW200 to set the format. In the case of the E44 you can switch both Digital I/Os to SPDIF or have one be SPDIF and the other AES. Remember that both the jumpers and switches must be altered to go from the default of AES to SPDIF. The format is set using SW200: Switch 1 controls Digital In/Out 1, while Switch 2 controls Digital In/Out 2 (E44 only). The OFF position selects AES format (default) and the ON position selects SPDIF format.
The default routing on the E22 delivers signals from the digital input to Record 3+4. On the E44 the default is that the digital inputs deliver signals to Record 5+6 for the first pair, and 7+8 for the second pair. In your DAW, make sure that the input selected corresponds to the desired signal source.
Make sure that the signal source is operating at the same sample rate as the card. Either the E22/E44 should be the clock master and the Digital signal source slaves to it, or vice versa, or both slave to a master clock. The E22/E44 clock source is set within the Lynx Mixer, the choices are:
- Internal - card is master
- External - slave to wordclock
- Header - slave to another Lynx card in system connected via the ICC clock cable
- Digital in - slave to device connected to the digital input(s)

Lynx E22/E44

I cannot change the clock source in the Lynx Mixer - it keeps reverting back to the previous setting

Clock settings can only be changed when no audio applications or processes are accessing the Lynx card drivers. Close any open audio applications or halt any audio processes that cause the card to be recording or playing before changing clock settings in the Lynx Mixer program.

Alternatively, it is possible to enable clock changes when the driver is active by selecting from the Lynx Mixer: Settings > Advanced > Allow Clock Change if Active.

Lynx E22/E44

I get clicks and pops when I increase my sample rate to 96k. Is there a compatibility problem?

It is important to consider that as sample rate increases, your computer has less time to process the same amount of data. For instance, at a sample rate of 48kHz, a buffer size of 128 samples will produce a latency of 2.66ms. At 96kHz, the same buffer size would produce a latency value of 1.55ms. At the higher rate, your computer may not be fast enough or have the resources available to play the audio without errors. Consequently, it is likely that you would need to increase the buffer size to allow your computer to work more efficiently. Note that if you are doubling the sample rate, for example, you can double the size of the buffer and maintain the same latency at the higher sample rate.

Lynx E22/E44

The firmware updater for the E22/E44 failed. How do I get the card to be seen by my computer?

If you recently updated the firmware on your card and the firmware updated failed, you may need to revert to the factory firmware to have the card seen by your computer system. To do this:

Turn off and unplug the computer and remove the E22/E44 card.
On the component side of the board there are 4 white switches, towards the back and on the same side as the PCIe contacts.
By default, switches 1,2 and 3 are OFF. Switch 4 is ON.
Turn switch #3 ON, and switch #4 OFF.
If the OS now recognizes the card, run the latest firmware updater for the card.
When complete, shut down computer.
Remove the AC cord, remove the card, and put the switches back to their originial position: 3 = OFF, 4 = ON.
Reinstall the card and boot into the OS. The card should now operate with the current firmware.

Lynx E22/E44

Driver signing error in Windows 10

When installing Lynx drivers build 23e and above, you may get an error message that the drivers will not show as being signed. The drivers are signed by Lynx, but they are not counter-signed by Microsoft (which is a very long and difficult process). As such, Windows 10 Build 1607 and higher will not load the driver unless you disable driver signature enforcement. Here are the steps to do so:

First off, since you will be disabling a security feature of Windows, after completing these steps take care to only install drivers that you trust to avoid potential corruption of your OS.
We will be using a "test signing mode" in Windows to get past the driver signing enforcement. Start by right-clicking the Start button, and selecting "Command Prompt (Admin)".
Paste the following command into the Command Prompt window and press Enter:
```
bcdedit /set testsigning on
```
Restart your computer to enter test mode. After re-boot you will see a "Test Mode" watermark in the bottom-right corner of the screen. In this state you can successfully install the Lynx Drivers.
To leave test mode (which will disable the ability to use the Lynx driver), open a Command Prompt (Admin) window again and run the following command:
```
bcdedit /set testsigning off 
```

Lynx E22/E44

How to resolve dropouts when playing or recording

When you get dropouts when playing or recording, this is an indication that the computer is not responding fast enough to interrupts from the audio device, or that the computer is taking too long in processing the audio before the audio must be transferred to the audio device to be played. The most common reasons for dropouts are:

Buffer size is too small for the sample rate and number of channels selected.

To resolve this, increase the buffer size.

Power management is causing the processor to go to sleep, which takes quite a bit of time to wake up, causing the interrupt to be responded to too slowly.

To resolve this, in the BIOS of the computer:

Turn off Intel SpeedStep (sometimes labeled EIST).
Turn off C-States: C1E; C3 and C6.
Turn off Intel Trusted Execution Technology.

In Control Panel, set your Windows Power Options to High Performance.

Lynx E22/E44

Inputs cannot be recorded in macOS 10.14: Mojave

If you are not able to record input signals in your DAW, it is because of something that happened at first launch of the DAW.

You may have seen a messages such as: "X App would like to access the microphone". Your options are "OK" or "Don't Allow". If you click "OK", you will have normal behavior in the DAW. If you choose "Don't Allow" then you will not receive input signals into the DAW.

In that case, you can restore normal operation by navigating to System Preferences > Security and Privacy > Privacy. From the list on the left, select "Microphone", then put a check next to the DAW or DAWS that you wish to record with.

Lynx E22/E44

In macOS 10.13 or above, drivers were installed but the device does not appear to OS. Lynx Mixer will not launch.

Starting with macOS 10.13 (High Sierra), Apple has added a new security feature that prevents third-party kernel extensions from loading without specific user authorization. For more information about this from Apple, please see TN2459.

To install the driver completely, first open the Lynx_OSX.pkg that was downloaded from the www.lynxstudio.com web site. After the driver installs, you may receive a message that a Kernel Extension has been blocked. Either way, go into the Security & Privacy of the Systems Preferences pane, and click "Allow" for the Lynx Studio Technology extension. Once you restart your system the driver should load properly.

Lynx E22/E44

Windows 10 Installation - error message during install: DIFXAPI_Error - PnP Install Failed

Follow these steps to resolve:

Remove the driver from Start > All Programs > Lynx Studio Technology > Uninstall Lynx Driver (or C > Program Files > Lynx Studio Technology V2Uninstall or V3Uninstall)
Reboot when prompted
Run the driver installer, but do not continue once the DIFXAPI_ ERROR message comes up
Go to device manager
Right Click the Lynx Device under Sound, Video and Game Controllers and choose "Update Driver"
Point the installer to C:Program FilesLynx Studio TechnologyV2Driver or V3Driver for the driver files

Continue installation