the default windows interface to the mixer driver can also be used and is the recommended way to set audio ports and gains on the osprey-540. there are two simple methods for getting to the mixer source and volume control dialog box.
1. the easiest method for accessing this interface is to right click the speaker symbol on your taskbar (typically on the bottom right-hand side of your screen). then select the open volume controls option.
2. if you do not see the speaker symbol, click the start button on the start menu, select programs-]accessories-]entertainment (or multimedia) and select volume control. for windows xp, select start -] all programs -] accessories -] entertainment -] volume control.
either of these two methods brings forth the audio mixer interface for the audio playback device. to get to the osprey-540 audio capture (recording) device, select properties under the options menu. this pops up a dialog to select the mixer device. do not select the recording option within the adjust volume for section; this option is selected automatically when you select the osprey-540 for the mixer device. click on the dropdown list for mixer device to see the list of audio input and output devices, including the osprey-540.
if more than one osprey-540 card is in the system, each osprey-540 card is enumerated individually. once an osprey-540 device has been chosen, select ok in the properties dialog box.
the osprey-540 master control panel displays.
the osprey-540 device is not a mixer in that it does not allow for mixing the various audio sources. therefore, when one audio input is selected, any other input previously selected becomes unselected. the select checkbox at the bottom of each source sets which source is actually being used. dv audio signals are embedded in dv video signals. if you select dv audio, the video signal selection for pal/ntsc must match the state of the dv source.
the osprey-540 device is not a mixer in that it does not allow for mixing the various audio sources. therefore, when one audio input is selected, any previously selected input is unselected.
when you are capturing audio, the vertical field in the record control volume section will light up with green, yellow, and red bars (like sound meters on home audio equipment).
the osprey-540 card has a hardware gain on the analog audio inputs. to control the hardware gain for the card, use the volume slider in the mixer applet. the osprey-540 card has a software gain control on the digital audio inputs. for instructions on changing the software gain (for digital sources only), refer to gain selection.
the osprey-540 provides external monitoring of the audio input. the audio output is a stereo unbalanced rca connector. there is no gain or attenuation control for the audio-out monitoring feature. you cannot change the balance or volume controls on the osprey-540 playback device in the mixer applet.
the quick-access volume control (left click on the speaker symbol) on the task bar controls playback volume and recording volume. to change record levels, go to options, then properties, and select recording.