ELENOS HF1000 PDF

The ETG Digital transmitters series low and medium power , ultra-compact FM transmitter with direct to channel digital exciter from Elenos, is a lightweight system housed in two or four rack units. The transmitters in this product line are available in 7 different power levels. Combining efficiency, low-power consumption and reliability with high fidelity and extreme sound purity through the use of digital technology. The Elenos digital series of FM transmitters maximizes the concept of energy efficiency, compactness and reliability, factors that have guided Elenos in equipment design over the past decade.

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The manufacturer reserves the right to change at any time this handbook without the condition to advise that the version has been updated. Via G. The unit is designed to operate as a final stage powering a radiating system, or as an intermediate stage in a chain of amplifiers, thus loaded by the input stage of a following amplifier. In both cases an exciter modulator is necessary. Do not open the unit for internal inspection of any sort unless the line supply cable is disconnected from the supply and all other connections to other equipment are also disconnected.

Any operations which need to be carried out with panels open should be left exclusively to qualified personnel and those aware of all the risks associated with operating high voltage equipment generating significant RF power levels.

If, on a visual inspection, any components reveal themselves to be damaged, fractured or incomplete, proceed with extreme caution to avoid contact with the hands or any other part of the body. The principal components of the unit operating at radio frequency contain the highly dangerous substance, Beryllium Oxide. Only qualified, competent personnel are capable of handling the equipment and its electronic components without risk.

Owners equipment are obliged to conform with these recommendations. The installation of any electronic apparatus exposes personnel to risk; ELENOS explicitly requests that no work is carried out unless at least two people are present. This is in view of the fact that over and above the electrical connections that are necessary, the sheer physical weight of the unit will not allow a single person to install the unit with complete safety.

Do not commence any operation before reading all safety and operational instructions. ELENOS advises the following safeguards: hang a poster in the equipment room with clear instructions for first aid in the event of personal injury; provide local first aid equipment and facilities and display telephone numbers and means of contacting local public or private emergency services which can easily be referred to by all personnel.

The output combiner circuit has resistors which compensate for the unbalances between the modules and the output filter. The equipment features a sophisticated array of supervisory circuits which monitor the operation of the RF circuits so as to maximize lifetime and minimize down-time and operator intervention. The RF modules' power supply circuit includes two independent power supply subsystems which employ phase-angle switching rectification.

The line transformers are of toroidal construction with an electrostatic shield to separate the primary and secondary windings. The rectifying filter is inductive and capacitive. Control of the stabilized voltage is by a microcontroller which controls the output voltage as a function of the RF power being developed.

The microcontroller on the power supply cards also monitor the safety of the RF power modules; if the parameters go outside their limits, the microcontroller will reduce the voltage supplied to the modules and thus the total RF power. Each power supply supplies and monitors 4 of the 8 modules, such that the failure of one power supply will lead to the shut-down of only half the transmitter. The power supplies are protected against accidental short circuits and, importantly, features a rapid power shut-down system reaction time about s which can save the delicate MOSFET devices from damage which they would otherwise incur even after short periods of overload.

Measurement of direct and reflected power is common to both power supplies and is read from the output filter. Temperature is measured on a copper bar which links the two heatsinks. For a more meaningful temperature measurement, each heat-sink accommodates two modules powered by power supply A and two by power supply B. The output combiner is constructed in such a way that with one power supply active and balanced, a quarter of nominal output power can still be developed.

The master card card E The program of the microcontroller may be partially customised at the customer's request to adapt it to local operating requirements. This card is in continual digital communication with the power supply card and the front panel card card E It collates information received from the power supply and the operator and can supply current or past data to the operator via codes displayed on the front panel.

It also routes commands to the power supply received from the front panel or from the remote connector situated on the interface card card E Actual values of power F.

PWR, R. Protection of output reflected power: W max. Protection of Mosfet current: 39A max. Protection of input power: W max. Thermal protection: 85 C max.

This switch is situated on the lower left of the panel; in position 1 the equipment is operative, in position 0 operation is suspended, i. The front panel also features a meter which can display alternatively: power output F.

PWR , reflected power R. Other indicators with the same name display the normal or abnormal, current or past operating status of the apparatus. The LOCK indicator lights when a temporary or permanent shut-down of the unit has occurred as a result of either operator intervention or a fault.

The selector selects the parameter to be shown on the meter and also influences the alphanumeric display. When the unit has been functioning normally, the alphanumeric display shows a 0 except in the case of F. Otherwise the number of faults pertaining to the parameter selected is displayed. If, in the past, an anomaly occurred, the corresponding indicator remains permanently lit.

These indicators can light intermittently during Automatic Power Control intervention. If an operational parameter being monitored, has exceeded the alarm threshold, the RF modules' power supply will reduce the supply voltage and therefore the power dissapated, in an attempt to avoid a complete shut-down with the consequential loss of service, on the basis that: better less power output than no power output.

When the selector is in the F. Not all faults generating error codes are permanent, the temporary removal of electrical power from the apparatus leaves two possibilities: remove the cause of the shut-down or repair the equipment. Clearly, faults due to failure of the microcontrollers cannot be ruled out and these will preclude any diagnostic assistance.

Shut-downs LOCK indicator lit are of two types: permanent, without any attempt to reset, and temporary shut-down with successive attempts at automatic rest. The period between resets have been programmed according to the type of fault. The equipment will attempt resets for 24 hours without operator intervention, unless the fault is considered non-resetable.

The RESET button can be used by the operator when the equipment has shutdown due to a fault which is no longer believed to be a cause of malfunction. This will clear the memory of previous faults but has no effect if the fault has been identified as fatal. Three indicator lights for other. The R. MONITOR socket provides a sample of the power output of the unit, attenuated by dB, for connection to a spectrum analyser and can be used to check correct operation of the apparatus and any anomaly present in the radio spectrum.

This connector allows remote devices to control various operational parameters of the unit and to activate various operations even via automatic controllers such as timers, interlocks and other similar electronic or electromechanical devices. Can be used in conjunction with pin 14 to reset after an enforced shut-down. Can be used in conjunction with pin 14 to enforce a shutdown. Pin 3, pin 4, pin 5, pin 15, pin 16, pin 17, GND. If low 0V , the unit is operative, if high 12 Volts , the unit has shut-down.

Pin 9 5 Volts. Internal 5V supply indicator. Pin 10 R. Reflected power signal normalised at 2 Volts f. Signal representing current drawn by the RF stages, normalised at 2 Volts f. Signal representing RF exciter input voltage, normalised at 2 Volts f. Pin 13 V. Voltage normalised for the front panel meter 2 Volts. When connected to GND via an external switch, the unit is forced in stand by mode. Pin 19 S. Signal representing heat-sink temperature, normalised at 2 Volts f.

Signal representing RF module power supply voltage, normalised at 2 Volts f. Pin 23 F. Signal representing the units RF power output, normalised at 2 Volts f. Pin 24 V. Internal V voltage indicator. In particular, the power supply should feature a cut-out facility in the event of over-current; safety breakers for protecting personnel and earth connections for all equipment. The installation site should have outlets for the discharge of hot air produced by the equipment and a supply of fresh air.

The HF is not a transmitter but an amplifier which requires at least a modulator, if not additional power stages. This poses the problem of integrating a system with other technical specifications which must comply with the transmission regulations of the country of installation. It is therefore necessary to consult this technical manual and especially the chapter regarding problems of transmitter systems which are assembled from diverse.

Two configurations of the HF are envisaged: 1 as the final amplifier driving the radiating system, 2 as an intermediate amplifier driving the input stages of another amplifier. Before installation, all packing pieces used during transit should be removed from the equipment.

Then a visual inspection should be made of the equipment to ensure that no damage has been incurred during transport. All the technical manuals supplied with each unit which make up the system being installed should be read to ensure that the conditions of guarantee are complied with and, most importantly, that any danger to personnel is avoided. Check that the line voltage stated on the test documents corresponds with that of the local supply, if not, connect an appropriate means of conversion.

Situate the HF and its modulator in their final position. In turn the HF receives its line supply from a successive amplifier, if present, or direct from the electricity supply see the technical manuals of other stages connected to the HF for more information.

The radio frequency connections start at the modulator, the output of which should be connected to the R. The modulator features a regulator to adjust the RF power output, this should be set so that, at switch-on, output power is at a minimum see the modulator technical manual for more information regarding adjustment and connection to other equipment.

On the rear of the unit, a supplementary earth connection can be made via the exposed captive screw. This allows a low-resistance path to earth for atmospheric electrostatic. When all the equipment is connected and all panels are closed, the units can be switched on in the following sequence: first the final stage the whole transmitter system, then the intermediate stages and finally the modulator.

If the system is configured with the HF as the final stage, the modulator should be adjusted to regulate the output power of the HF amplifier to comply with the terms of the homologation licence for the site in question.

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Embed Size px x x x x The manufacturer reserves the right to change at any time this handbook without thecondition to advise that the version has been updated. E Power Supply Board 38E The equipment features a sophisticated array of supervisory circuits which monitor. The power supplies are protected against accidental short circuits and, importantly,.

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The manufacturer reserves the right to change at any time this handbook without the condition to advise that the version has been updated. Via G. The unit is designed to operate as a final stage powering a radiating system, or as an intermediate stage in a chain of amplifiers, thus loaded by the input stage of a following amplifier. In both cases an exciter modulator is necessary.

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