How do I adjust the input gain using the Windows mixer?
The Windows operating system provides a mixer utility for setting the input gain and output volume for each of the sound cards installed on the machine. To activate this mixer simply double click on the speaker icon located at the rightmost part of the taskbar near the clock. It can also be activated by clicking Start | Programs | Accessories | Multimedia | Volume Control, or clicking on the Options | Device menu in SpectraPLUS and clicking the Mixer button. By default the mixer is titled “Volume Control” and shows a set of sliders for setting the output volume. Use the “Wave” slider to control the output level from the signal generator or wave file playback from the program. The left most slider controls the overall volume for all of the sources after they are mixed. A check box is also provided to allow you to mute selected sources. If you do not hear a signal, make sure that the volume levels are set properly and that it is not muted. Many users are confused by the line/mic sliders
