Andrew Wireless Innovations Group BCP-TFAM26 用户手册

MN024-04  

 

 
•  Check that power supply voltage selector is in the correct position (115 or 230 VAC). In 

passive distribution version this selector is not present. 

•  Have all the switches in OFF position 

•  Check the connection polarity is not wrong 

• 

P

ower on the TRS/TRSN unit through the back general switch 

•  Power on each remote unit through the front panel switches 

•  Check if the remote units shows the proper green supply led ON 

 

 
If the remote unit doesn't appear to be properly supplied  
•  Check the fuses on the rear panel 

•  Check the voltage at the front panel screw connectors: nominal value without load is -59VDC, 

nominal value with full load is -48VDC. If Those values are exceeded by 10% check the if the 
mains are within the allowed limits. In passive distribution version, the output voltage depends 
on the supply source. 

•  Check the voltage at the remote side it should be in the range -36 to -72 VDC that is the 

maximum allowed range admitted by the remote units. 

 
If the protection switch jump always in OFF position 
•  Check if any short on the line 

•  Check if the remote unit shows the nominal current power consumption. 

•  Check if any long period overshooting related to the mains supply. 
 
If the fuses blow up after a power-on with all the front switches ON, there should be a too high 
initial peak current transient: check the proper fuse  (delayed type) or substitute with an higher 
current fuse (i.e. 6A or 10 A). If the problem still persists check the proper ground /mains 
connection.