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•  Increase  the  separation  between  the  equipment  and 
receiver.  

•  Connect  the  equipment  into  an  outlet  on  a  circuit 
different from where the receiver is connected.  

21. 

OUTDOOR 

ANTENNA 

INSTALLATION/SAFE 

ANTENNA AND CABLE CONNECTION

:  

•  If  an  outside  antenna  or  cable  system  is  connected  to 
the  equipment,  be  sure  the  antenna  or  cable  system  is 
grounded  in  order  to  provide  protection  against  built-up 
static  charges  and  voltage  surges.  Article  810  of  the 
National Electrical Code, ANSI/NFPA 70 (in Canada, Part 
1  of  the  Canadian  Electrical  Code)  provides  information 
regarding  proper  grounding  of  the  mast  and  supporting 
structure,  grounding  of  the  lead-in  wire  to  an  antenna 
discharge  unit,  size  of  grounding  conductors,  location  of 
antenna  discharge  unit,  connection  to  grounding 
electrodes and requirements for the grounding electrode.  

•  Outside  antenna  system  should  be  located  well  away 
from  power  lines,  electric  light  or  power  circuits  and 
where  it  will  never  come  into  contact  with  these  power 
sources  if  it  should  happen  to  fall.  When  installing  an 
outside  antenna,  extreme  care  should  be  taken  to  avoid 
touching  power  lines,  circuits  or  other  power  sources  as 
this  could  be  fatal.  Because  of  the  hazards  involved, 
antenna installation should be left to a professional.  

 

 

 

 

 

 

 

 

 

 

Summary of Contents for U280SC

Page 1: ...Amplifier U280 SC 25th anniversary...

Page 2: ...ndry tub or in a damp environment like a basement or outside in the rain 5 WALL OR CEILING MOUNTING Mount the unit to a wall or ceiling only in the manner recommended by the manufacturer 6 OBJECT AND...

Page 3: ...lightning and power line surge damage 13 POWER LINES Do not locate an outside antenna system in the vicinity of overhead power lines or other electric light or power circuits When installing an outsid...

Page 4: ...TEM INSTALLER This reminder is provided to call the CATV system installer s attention to article 820 40 of the NEC ANSI NFPA 70 which provides guidelines for proper grounding and in particular specifi...

Page 5: ...ode provides information regarding proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna dis...

Page 6: ...the aerospace industry assuring long trouble free operation The New U280 SC 25th Anniversary Stereo Tube Amplifier includes a new and improved differential output as well further reducing the THD and...

Page 7: ...SETUP IMPORTANT The amplifier should be unplugged from the wall outlet First choose the proper output impedance accordingly to your speaker both channels should be the same 1 2 ohms from 1 to 2 ohms l...

Page 8: ...change the tubes just unplug the A C power line cord pull out the old ones and insert the new tubes the active bias will balance them We recommend matched pair output tubes but this is not indispensa...

Page 9: ...an use a soft lightly humid cloth WARNING Never take the tubes out while the amplifier is plugged It is important to substitute the tubes with the correct numbers Troubleshooting Doesn t turn on Look...

Page 10: ...fields near the signal ones Because you have a servo controlled bias and the BEFS always use the best interconnections cables AC power line and loudspeakers cables that you can get We recommend havin...

Page 11: ...ed with the product c Repair or attempted repair by anyone not authorized by Margules Audio to repair the product d Any shipment of the product claims must be presented to the carrier e Any cause othe...

Page 12: ...ntability and fitness for particular purchase are limited in duration to the length of this warranty Exclusion of Damages Margules Audio s liability for any defective product is limited to repair or r...

Page 13: ...525 514 7448 Toll free 1 888 538 8605 FAX 525 533 4654 Email info margules com mx MARGULES USA 820 Elm Drive div PetalumaCA 94952 Phone number 707 5811830 Collect USA Canada 1 888 538 8605 Fax number...

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