43
DS1083-135
POWER-ON AND POWER VOLTAGE TEST
Power the system and run the following tests with the system in standby conditions after carefully setting
the line terminations and con
fi
guring all devices before
fi
tting the monitors on the brackets:
Ref. 1083/20A and column power supplier unit Ref. 1083/23
Check that direct voltage from 44V to 48V is present at each LINE1 and LINE2 terminal pair.
Calling stations
Check for direct voltage in the range from 38V and 48V at the LINE terminals.
Video distributors Ref. 1083/55
Check for direct voltage in the range from 38V and 48V at the LINE (IN/OUT) and LINE1-4 terminals.
Apartment stations
Check for direct voltage in the range from 38V and 48V at the LINE terminals.
Column distributor Ref. 1083/53 and column interfaces Ref. 1083/50
Check for direct voltage in the range from 38V and 48V at the POWER, LINE IN and LINE OUT
terminals.
Door unit interfaces
Check for direct voltage in the range from 38V and 48V at the POWER IN and POWER LINE
terminals.
CHECK THE SYSTEM
HOW TO SPLIT THE SYSTEM INTO SECTIONS
It may be useful to split the system into sections to isolate suspected problems when troubleshooting or
seeking incorrectly wired areas.
As previously mentioned, the interconnection of devices forms an adapted transmission network. It is not
therefore possible to disconnect parts of the system without considering the disruption that this will cause.
Observe the following rules:
1. Turn the interface termination of the distributor or column interface to the ON position if a branch of a
line connected to the column distributor or column interface is disconnected.
TC
TC
Z= OFF
Column
distributor
2Voice column
power supply
unit
2Voice column
power supply
unit
Column
distributor
Column
distributor
Column
distributor
Z= ON
Z= ON
Z= ON
Disconnect the starting side and not the arrival side.
2. Fit a termination (Z in the ON position) on the last device connected to the riser column if a section
connected in in-out mode is disconnected.
Termination
OFF
Termination
OFF
Termination
ON
1
1
2
2
Video door phone 2 will be isolated. In this way, video door phone 1 will become the last of the
line and its line termination must be on. Also in the case, disconnect the starting side and not the
arrival side.