User manual AUSTRALIAN MONITOR DCM120

[. . . ] Adjust this control for the desired output level depending on the level of the input signal (from a mixer or other signal source). The factory default setting for this control is such that a 1 volt input will give a 100 volt output. Amplifier Status Display The amplifier status display highlights the operating condition of the DCM120. The status display indicates: High Temperature: This red LED glows if the fan has failed and the amplifier has been shut down by its temperature control circuitry. If this LED is glowing and the fans have not failed, it means that the amplifier is operating in an ambient environment that is too hot for fan cooling to make any difference to the temperature of the amplifier. [. . . ] This feature can be used as either a backup facility (if mains power fails) or for applications where AC power is not available. The left side red post is the + (positive) terminal while the right side black post is the - (negative) terminal. This socket also provides trickle charge to a DC battery supply (if connected) when the DCM120 is operated from AC mains power. The level of trickle charge is 300 mA, maximum. XLR Audio Input and Parallel Output The input to the DCM120 is transformer balanced @ 10K ohms. When signal is connected to one XLR, the other XLR becomes a line level output allowing the input signal to be distributed (split) to other amplifiers. In some projects, the same input may be looped through to multiple amplifiers using this method. Up to 6 amplifiers can be looped together without any noticeable loss in level. A distribution amplifier should be used when more than 6 amplifiers need to be looped. Pin 3: Cold, -, Negative DC Fuse Receptacle Located on the rear panel is the DC fuse receptacle. Access the DC fuse by turning the cap counter-clockwise with a screwdriver. Please ensure that the AC power switch is in the `off' position and that the mains power cord is disconnected before attempting to check or replace this fuse Cooling Fan (Air Intake) The cooling fan is temperature sensitive and will only switch on when the temperature of the DCM120 had reached a predetermined range. The fan will stay on and only switch off again once the temperature of the DCM120 has fallen below a pre-determined level. If the DCM120 is operating continually at conservative levels and proper load conditions, it is possible that the cooling fan will not switch on at any time during normal operation. When operating, the fan works with air flow from the front to the rear of the DCM120. Fuse Sizes Mains, 240VAC: 4 Amperes Slow Blow. Important Safety Information 1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid. Make sure power outlets conform to the power requirements listed on the back of the unit. The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles, and the point where they exit from the appliance. Always operate the unit with the AC ground wire connected to the electrical system ground. Precautions should be taken so that the means of grounding of a piece of equipment is not defeated. Mains voltage must be correct and the same as that printed on the rear of the unit. [. . . ] Service Information Equipment should be serviced by qualified service personnel when: A. The equipment does not appear to operate normally, or exhibits a marked change in performance E. The equipment has been dropped, or the enclosure damaged. Engineered by Audio Telex Communications Pty Ltd, Sydney, Australia A. B. N. 78 001 345 482 Inc in NSW www. audiotelex. com. au Export Sales & Corporate Head Office Private Bag 149, Silverwater NSW 1811 149 Beaconsfield Street, Silverwater NSW 2128 Australia Ph: 61-2- 9647 1411 Fax: 61-2-9748 2537 E-mail: ho@audiotelex. com. au Sydney (NSW & ACT Sales) Private Bag 149, Silverwater NSW 1811 149 Beaconsfield Street, Silverwater NSW 2128 Ph: (02) 9647 1411 Fax: (02) 9648 3698 E-mail: nsw@audiotelex. com. au Adelaide (SA & NT Sales) P. O. [. . . ]