User manual AUSTRALIAN MONITOR DCM250

[. . . ] If both an AC and DC voltage supply are connected and you rock the AC power switch to the `off' position, the DCM250 will automatically continue to operate normally from the DC supply (and the `mains failure' LED will also glow under these conditions). Level Control The output level control is located in the centre of the front panel, just to the left of the mains rocker switch (recessed screwdriver adjustable pot). Turning the control clockwise will increase the output of the DCM250 towards it's maximum output level while turning the control counter-clockwise will decrease the output level. 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 DCM250. The status display indicates: High Temperature: This red LED glows if one of the fans has failed and the amplifier has been shut down by its temperature control circuitry. [. . . ] 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. The XLR's are wired as follows: Pin 1: Shield. Pin 3: Cold, -, Negative Twin DC Fuse Receptacles Located on the rear panel are two DC fuse receptacles. Access each DC fuse by turning the cap counter-clockwise with a screwdriver. The value of the fuse is 10 Amps slow blow. 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 fans are temperature sensitive and will only switch on when the temperature of the DCM250 had reached a pre-determined range. The fan will stay on and only switch off again once the temperature of the DCM250 has fallen below a pre-determined level. If the DCM250 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 DCM250. Fuse Sizes Mains, 240 VAC : 6 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. Read all documentation before operating your equipment. Retain all documentation for future reference. Follow all instructions printed on unit chassis for proper operation. 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. Do not use the unit if the electrical power cord is frayed or broken. 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. [. . . ] The equipment has been exposed to rain D. 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. [. . . ]