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952.864UK, 952.867UK User Manual 

 

SAFETY SYMBOL AND MESSAGE CONVENTIONS 

 

 

CAUTION 

RISK OF ELECTRIC SHOCK 

DO NOT OPEN 

AVIS 

RISQUE DE CHOC ELECTRIQUE NE PAS 

OUVRIR 

 

 

 

 

 

 

This symbol indicates that dangerous voltage constituting a risk of electric shock is 

present within this unit

 

 

 

 

This symbol indicates that there are important operating and maintenance instructions 

in the literature accompanying this unit.

 

 

 

SAFETY NOTICE 

 
1.

 

Prior to use, read through this manual 

2.

 

Keep the manual in good condition 

3.

 

Pay attention to safety warnings 

4.

 

Observe all operating requirements 

5.

 

Do not use the device near water or wet areas 

6.

 

For cleaning, only use a lint-free, dry cloth 

7.

 

Install according to the specifications 

8.

 

Place away from heat sources or heating appliances 

9.

 

Use mains lead provided and avoid damage to cable or connectors 

10.

 

Unplug power from mains during stormy weather or if unused for long periods 

11.

 

In case of malfunction, water ingress or other damage, consult qualified service personnel 

12.

 

Do not place in damp areas or near liquids or moisture. Do not spill liquids on the housing 

13.

 

Please pay attention to warning symbols during transit and 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, stop using immediately, allow unit to dry out and have checked by qualified personnel before 

further use. Avoid impact, extreme pressure or heavy vibration to the case 
No user serviceable parts inside – Do not open the case – refer all servicing to qualified service personnel. 

 

Safety 

 

 

Check for correct mains voltage and condition of IEC lead before connecting to a power outlet 

 

Use insulated loop wire, ensuring the correct gauge for the loop distance required  

 

Do not allow any foreign objects to enter the case or through the ventilation grilles  

 

Placement 

 

 

Use the mounting ears supplied when installing into a 19” rack 

 

For rack-mounting, ensure adequate support for the weight of the amplifier 

 

Ensure adequate air-flow and do not cover cooling vents at the front and rear of the amplifier 

 

Ensure adequate access to controls and connections 

 

Cleaning 

 

 

Use a soft cloth with a neutral detergent to clean the casing as required 

 

Use a vacuum cleaner to clear ventilation grilles of any dust or debris build-ups  

 

Do not use strong solvents for cleaning the unit 

 

 

 

Содержание Adastra LA Series

Страница 1: ...LA SERIES LOOP AMPLIFIERS Item ref 952 864UK 952 867UK User Manual Caution Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty ...

Страница 2: ...AZARDOUS 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 stop using immediately allow unit to dry out and ha...

Страница 3: ...should 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 inle...

Страница 4: ...his socket gives 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 activa...

Страница 5: ...quation 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 reference refer to the table be...

Страница 6: ...e Phantom 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 amplifi...

Страница 7: ...s 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 applia...

Страница 8: ...ures within the architecture close to the loop Avoid changes 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 P...

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