The APV instrument (Anpassverstaerker) was developed at the University Hospital in Freiburg. The interface to the APV is a parallel port. To be able to program the APV with a Windows PC, an additional hardware is needed which buffers the signals coming from the PC and starts the programming of the APV afterwards with a fix timing. This ensures that a fix timing is provided for the programming. With Windows as operating system, LabView can not directly access the parallel port. Therefore, an additional device driver must be installed. It is available in the full version in the directory Imago\utilities\AccessHW or in the Install version in the directory programs\Imago\Record\Utilities\AccessHW. Run the setup.exe. The buttons Laod/Save are used to load or save a complete setting. The complete setting is directly sent to the APV after any change. You can continuously change parameters and directly see the results. For Imago it is important that every channel which should be recorded has a valid channel name. If you input new channel names, you will be asked if the new names should be stored in a list. The intention of this list is to easily insert channel names the next time and to unify the used channel names. Press on one of the two popup menus on the left side and it appears a proposal of channel names. Select one of these names and it will overwrite the active channel name. The upper popup menu shows names from the Madaus EEG/EMG amplifier. The lower popup menu shows proposals for the APV channel names. Use the field Calibration: 1V = to input a coefficient to calculate a physical unit out of the voltage recorded at the A/D converter. Input e.g. 1V = 30 degree for a gonio. When converting from BIN to Channel format, the signal is multiplied with 30 and the channel unit will be set to degree. If nothing is input, IMAGO calculates with calibration coefficient 1.0 and the unit Volt. Madaus and APV are normally connected together. A channel from Madaus will be routet through the APV to compensate an offset and to fine-tune the amplification. The settings of both instruments will be saved in the BIN file if you provide the information that the APV is connected with the Madaus. Use therefore the same channel names in Madaus and APV.