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ON Semiconductor
In the default configuration, only a basic audio path is configured. The front microphone input is enabled but the
preamplifier gain is set to 0 dB. All advanced features are disabled. At this point, no audio signal is observed at the
device output.
To generate an audio signal, follow these steps:
1. Select the
SG
tab in the Control Panel window.
2. Ensure that the
SG Bandwidth
parameter is set to 250 Hz + 11750 Hz per sideband.
3. Ensure the
Pre-Channel Level
is set to -40 dB.
4. Enable the sound generator by selecting
Static
from the drop-down menu for the
Enable Mode
parameter. The
Control Panel screen needs to look like Figure 13, below:
Figure 13. Enabling the Sound Generator
5. Click the
Programmer
button and select
Write to RAM
.
6. A white noise signal is now observable at the output of the device.
7. To disable the sound generator, select
Disabled
from the drop-down menu for the
Enable Mode
parameter and
write that to RAM. The noise signal is now off.
If you can hear an audio signal from your device, then your system has been configured correctly. You can now use
a similar procedure to modify other device parameters. For full details on the various features, refer to the
Ezairo 7111 V2 Firmware Bundle User’s Guide
.
5. F
URTHER
R
EADING
For additional technical details and more information regarding firmware bundle algorithm parameters, refer to the
following resources:
