Alpine HDS-990 HDS-990 Owners Manual - Page 24

 SPDIF/Opt switch page 1 Turn the encoder to the left to select [] operation. Setting items: SPDIF/Opt switch Setting content: OFF/ON (Initial setting) Sampling Rate Settings Select [Sampling Rate] from the general page. Refer to step 1 of "General Settings" (page 18).  System sample rate settings page After the factory settings are restored, all the setting items will be restored to the factory default settings except for the debugged "Dealer Settings" mode. About Select [About] from the general page. Refer to step 1 of "General Settings" (page 18).  About page 1 Turn the encoder to the left to select [] operation. Setting items: System sample rate setting selection Setting content: 192kHz(Initial setting)/44. 1kHz  After switching the system sample rate, the system will restart. Clear all Settings Select [Clear all Settings] from the general page. Refer to step 1 of "General Settings" (page 18).  Clear all settings page Here you can confirm the version of the machine and other information. After selecting "About", you can view the following information. Software version/device version/machine name DIAG Mode Select [DIAG mode] from the general page. Refer to step 1 of "General Settings" (page 18). DIAG mode Firmware update Dealer setting Serial number  DIAG mode page 21 EN