Sennheiser ADN C1 Instructions for Use - Page 67

Configuring the conference system via the central unit If the temperature is too high, proceed as follows: ̈ Make sure that the air vents of the ADN CU1 central unit and the ADN PS power supplies are not covered or blocked (see page 23 and page 25). ̈ If necessary, clean the air vents (see page 148). If the ADN CU1 central unit and the ADN PS power supplies are mounted into a rack: ̈ Provide additional ventilation by providing for a duct or vent space of 1 U below and above the central unit and the power supplies and/or by installing additional fans into the rack. When the temperature is again within the permissible temperature range, this is automatically detected by the system ("☺" icon appears behind "System" on the display). The temperature check is carried out cyclically. If, in spite of these measures, the temperature is still detected to be too high, one of the fans might be faulty: ̈ Have the fans checked and, if necessary, replaced by qualified maintenance personnel. Displaying system bus errors - "Bus Statistics" Main Menu System Menu Diagnostics Select and call up the "Diagnostics" submenu Diagnostics System Load Temperature Bus Statistics No Select and call up the "Bus Statistics" menu item Bus Statistics Error Indication : ☺ Break Counter : 1 No View the information; exit the menu item Possible causes for system bus errors are: • changes in the number of conference units • faulty cables • faults in cable shields • faulty conference units • strong electromagnetic fields If there are system bus errors, the " " icon appears behind "Error Indication". The display panel lights up red and the warning triangle N is displayed on the standard display (see page 59). There are temporary or permanent transmission errors: Temporary transmission errors can be caused by e.g. poorly shielded mobiles phones that are placed too close to the system cables or conference units. If the transmission error no longer exists, the "☺" icon appears on the display. The display panel lights up orange and the warning triangle N goes off. Permanent transmission errors must be eliminated immediately in order to ensure trouble-free operation of your conference system. Follow the steps for error elimination described under the "System Load" menu item (see page 64). If necessary, reduce the length of the system cables between the ADN CU1 central unit and the ADN PS power supplies (shorter cables increase the operational reliability, the maximum length allowed is 80 m). In addition, check if other electronic devices in the proximity of the conference system might cause the errors. You can manually reset the " " icon behind "Error Indication" to the default icon ("☺") (see page 67). The error counter ("Break Counter") incrementally counts all errors and changes in the conference system (e.g. added conference units or connected and switched on ADN PS power supplies). Based on the changes of the counter's counts, you can conclude on the error source (e.g. if the counter rapidly increments when you wiggle the cable, this indicates a faulty cable). You can manually reset the error counter ("Break Counter") (see page 67). 66 | ADN Digital Conference System