Adastra LA-600 Скачать руководство пользователя страница 1 | Manualshive

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LA-600

LOOP AMPLIFIER

Item ref: 952.867UK

User Manual

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Содержание LA-600

Страница 1: ...LA 600 LOOP AMPLIFIER Item ref 952 867UK User Manual ...

Страница 2: ...placement 14 Terminals marked with the symbol are HAZARDOUS LIVE and should only be connected by qualified personnel 15 Ensure that the apparatus is connected to a mains socket with a protective EARTH connection 16 Ensure correct operation of the mains switch Warning To prevent the risk of fire or electric shock do not expose any components to rain or moisture If liquids are spilled on the casing ...

Страница 3: ...be installed in accordance with BS7594 Front panel 1 Channel 1 input level control 6 Loop current master level control 2 Channel 2 input level control 7 Siren indicator 3 Channel 3 input level control 8 Loop current level indicator 4 Bass EQ adjustment 9 Power switch and indicator 5 Treble EQ adjustment Rear panel 10 Mains voltage selector 15 Unbalanced RCA inputs 11 Combined IEC mains inlet and f...

Страница 4: ...ives 2 wiring options as shown below Connecting a mono 6 3mm plug will function as a slave output A TRS plug with signal connected to the ring will be needed for a slave input from another loop amplifier Alarm contacts 13 are provided which will emit a siren on the induction loop when the connection is made These can be connected to an emergency switch or alarm panel contacts to activate the siren...

Страница 5: ...n 0 2Ω and 2Ω The following equation can be used to calculate the total cable resistance which will show if the gauge is correct R Cable length m x 0 01786Ω mm m specific resistance of Copper Cable CSA mm So for a cable 80m long with a Cross Sectional Area CSA of 1 5mm R 80 1 5 x 0 01786 0 9525Ω So this gauge of wire 1 5mm would be OK for the 80m run because it is between 0 2Ω and 2Ω As a quick re...

Страница 6: ...antom switch to OFF For line inputs select LINE on the DIP switches For channel 1 there is an option for PRIORITY over the other two channels which will mute the output of channels 2 and 3 when there is an input to channel 1 If the loop amplifier is to be used in conjunction with a PA system with loudspeakers connect the line or aux output from the PA system to a Line input on the loop amplifier v...

Страница 7: ...are at maximum level the Peak Current indicator does not show overloading It is recommended to use an induction loop receiver 952 855UK to check the audio from the induction loop Adjust the Loop Current control to set the main audio level from the induction loop The Metal Loss Correction control 18 enhances higher audio frequencies which may be absorbed by metal architectural features and applianc...

Страница 8: ... in height of the loop cable running over door frames etc Loop field interfering with other audio equipment Ensure that the loop cable is twisted between the loop and the loop amplifier If necessary form a cancellation loop to avoid affecting other equipment Siren activated Ensure that the alarm contacts are not accidentally shorted out Peak indicators mainly showing overload red Loop current or i...

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