User manual PIONEER VSA-D802S

[. . . ] For details, see How to Interpret the Graphs (page 13). Skewed reverb frequency characteristics in your listening room can prevent you from enjoying an accurate sound field. The graphs displayed by this application are a powerful tool because they allow you to check these reverb frequency characteristics at a glance. You can also check the effectiveness of steps that you take to improve the acoustics of your listening room, for example installing sound absorbent material. [. . . ] The application starts. 2 Select "Receive" under "File" on the menu bar. 3 Select the number of the COM port to which the RS-232 cable is connected and click "OK. " If you do not know which COM port number to select, try selecting each port in turn, beginning with "COM1. " COM port selection box Data transmission starts. (It should finish in about 10 seconds. ) When reception finishes, graphs of the received data appear. Note Refer the operating instructions of your PC for more information about COM port settings. Continue Troubleshooting If an error occurs when you select "Receive" and no data is sent. 7 Application Operations (Continued) Graph displays (names and functions of parts) When data is received, the first display to appear shows graphs for all channels (ALL display). This section explains the parts shown in ALL display and individual display. ALL display 1 2 3 4 Individual display (Example: Front L channel) 8 5 9 10 11 6 7 Continue 8 Application Operations (Continued) 1 Menu bar and menu icons You can choose the following commands from the application menus. File Open Save Save measurement data in a file (see page 11). Save As Receive Print Preview Exit Display Graph Switch between 2D (two-dimensional graphs) and 3D (three-dimensional graphs). Displays a preview screen to show how the printed page will appear. Opens a file that has been saved on the PC (see page 12). Window Cascade Tile Arrange Cascades files. * Tiles files. * Arranges minimized icons. * * Available when two or more files are open. Help Version Info Displays the version of the application. 2 Date and time Display the date and time when the measurement data was transferred to the PC. 3 Channel and frequency switch buttons Ch: Selects channel display mode (frequencies are displayed along graph depth axes). Freq: Selects frequency display mode (channels are displayed along graph depth axes). 4 All/individual display switch menu Allows you to select All display or individual display (Front L, etc. , ). 5 Level [dB] The level axis. 6 Time [msec] The time axis. Continue 9 Application Operations (Continued) 7 Channel memo (available only when individual channels are shown) Allows you to record a short memo about each channel. 8 Graph adjustment bar Z: M: E: R: Increases or reduces the display unit of the Level [dB] scale. This produces a total calibration for both direct sounds and reverberations, resulting in an ideal sound field. (See page 55 in the amplifier's Operating Instructions. ) Figure 4 Select the standard Acoustic Cal EQ. Front left low frequencies Level (dB) Front right low frequencies Front left high frequencies Front right high frequencies 0 80 160 Time (in msec) Notes · If you are not sure which time period to specify in Advanced EQ Setup, start by trying 20 to 40 msec. If the graphs show an unusual reverb curve for a specific frequency, the cause may be some accidental variation. Instead of selecting 20 to 40 msec, try another time period. · Another good method is to try various time periods in Advanced EQ Setup and select the one which sounds the best. · Time period settings cannot be made on the PC. They can only be made on the on-screen display of the amplifier, using the amplifier's Advanced EQ Setup function. Continue 15 How to Interpret the Graphs (Continued) Checking steps to improve your room's reverb characteristics The reverb characteristics of your listening room graphs are evident from the graphs. For your reference, the following four examples explain how different types of rooms appear in the graphs. Case 1: Graph rises to right across all frequencies This is probably a room with a good deal of reverberation. If possible, we recommend that you try installing some sound absorbent material to create a deader acoustic space according to your preference. Case 2: Specific channel shows unusual reverb characteristics There is probably some object near the speaker which affects sound reproduction. If possible, we recommend that you try to reduce the influence of that object. Continue 16 How to Interpret the Graphs (Continued) Case 3: Specific frequency shows unusual reverb characteristics There is probably something in the room that affects the reproduction of that frequency. [. . . ] 1) If there are any other applications active, exit the other applications and try starting the installer (PioneerAdvancedMCACC_e_ver_*_*. exe) again. 2) If that does not work, try restarting your PC, and starting the installer (PioneerAdvancedMCACC_e_ver_*_*. exe) with no other applications active. Continue 22 Troubleshooting (Continued) Cannot send measurement data to PC Cause 1: Random transmission errors sometimes occur. Even if an error occurred on your first attempt, try sending the data again. Sometimes the transmission succeeds when you try again. Cause 2: Messages like the following may appear if a transmission error occurs. Try the following, in the order indicated. 2) In the setup screen of the amplifier, check that "Operate a PC" is displayed. [. . . ]