Pub. 42004-376E
400-001 and 400-002NS RigCom Stations
Page 6 of 18
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-376E.docx
08/19
System Line Balance
Each system requires termination of the audio pair wires with a 1-kilohm, 1-watt resistor assembly
included with each unit. The line balance resistor assembly is made for easy installation into a customer-
supplied junction box.
N
OTE
:
Only one line-balance resistor assembly is needed per system.
Install the resistor assembly in a (customer supplied) junction box that is close to the center of the system
when cable runs approximately 4000 feet (1219 m) or longer are used (see Figure 5 and Figure 6).
N
OTE
:
The junction box must be suitable for the applicable hazardous location where it is located.
Figure 5. System cable wiring less than 4000 feet in length
Figure 6. Master/Slave System cable wiring greater than 4000 feet in length
