User Manual

10 Troubleshooting

The E22/E44 does not show up in the Operating System as a usable device:

1. Verify that the card has been installed correctly and is securely seated in the slot. You

may also want to try installing the card into a different slot.

2. Verify that you are using a compatible Operating System. See Section 2.2: Operational

requirements

3. With a proper installation, the LED on the back edge of the board can give diagnostic

information. There are four possible states for this LED:

LED Bright: Card is functioning and driver is successfully installed

LED DIM: Firmware is not functioning. Reprogramming firmware or setting card to

PROM 1 are suggested troubleshooting steps. See Section 8.4: Updating Firmware

LED Flashing: This indicates that the driver has not been properly loaded. Try

reinstalling driver, installing a different driver version (downloaded from the Lynx

website), or investigating if there is a conflict with another piece of hardware in the

system. Also, consider moving the card to a different PCIe slot if one is available.

LED Out: This means the card is NOT appearing to the OS. Try installing in a

different PCIe slot. Also try setting the Jumper for Prom 1 (See Section 8.4: Updating

Firmware). If all attempts are unsuccessful, try installing into a different computer

and see if the card appears after loading the driver.

The card shows up in the Operating System as a usable device, but will not pass audio:

1. Make sure that the E22/E44 has been assigned as the active device in the application

being tested. Many audio applications allow a specific audio device to be selected from a

configuration menu. Other applications will use whatever the operating system default

device is. In this case verify that the E22/E44 has been configured as the default playback

device for the system.

2. Check the Lynx Mixer Outputs Panel and see if there is meter activity for the appropriate

outputs being used. If there is, check the cable connections from the card’s outputs to the

monitoring equipment.

3. Click “Restore Defaults” in the Lynx Mixer from the MIXER menu.

Continuous clicking, popping or crackling noises in your audio:

1. Check clock master settings. In any digital audio configuration, there can be one, and

only one master clock. All other digital audio devices must be configured as slaves to the

designated master clock. Since the Lynx’s SynchroLock™ technology provides an

extremely stable and jitter-resistant clock, we recommend setting the card as the master

clock in your digital audio system. With multiple cards in a system, either all should

slave to external sources, or one card should be on Internal, the rest should be clock

slaves (Header). See Section 8.1: Configuring multiple cards

2. Check buffer settings in your audio application software. Smaller buffer sizes are

preferred because they reduce latency (the time it takes for an audio signal to travel

through your audio software). In some cases, however, setting too small a buffer size can

overtax your computer’s processor, particularly when running multiple tracks and/or a

number of DSP plug-ins. This can result in clicks and pops and other distortion in your