User`s manual

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stability, and automatic crash detection is enabled to allow recovery in the event
that the filter does crash.
The highpass filter (HPF) and automatic gain control (AGC) can be enabled or
disabled using push buttons on the front panel. The factory default HPF has a
cutoff of 200 Hz (meaning all frequencies below 200 Hz will be removed). The
factory default AGC can add up to 10 dB of gain to the audio.
1.3 Customization with the Software Utility
The software utility allows you to configure the individual filters in the system.
You can change settings such as filter sizes, adapt rates, and delays for the
adaptive filters. You can change the HPF cutoff frequency and the maximum
gain that can be applied by the AGC. Although only one of these custom
configurations can be programmed into the hardware at a given time, you can
save multiple configurations to files on your PC for later recall and reuse.
1.4 Programming Custom Settings for Standalone Use
Although the front panel controls don't allow the fine-grained adjustments to filter
behavior that the software provides, you can still use your custom settings when
operating the MicroDAC 5 in tactical situations. With the unit connected to a PC
running the configuration software, you can program your custom configuration
into the unit. The custom settings are stored in nonvolatile memory so that the
MicroDAC 5 will continue to use your custom settings even after it is
disconnected from the PC and power cycled. After programming, you can still
change the settings provided on the front panel of the unit, but the custom
settings (those not configurable from the front panel) will be preserved and used
where applicable. See section 5.10 for more information.