
16
Length of wiring cables
If the phase of the input signals to each IRA is not the same phase, the reception levels may drop. To
synchronize the phases of the signals, use the same total cable lengths from the IRAs to the IRCU/
IRCUDAN.
· Length of cables from IRA to IRCU/IRCUDAN: L1 = L2 + N1 = L3 + M1 + N1
· Keep the differences in the L1, L2 + N1, and L3 + M1 + N1 cables to within ±3 m.
L1
L2
L2
L3
L3
L3
L3
M1
M1
N1
N1
IRA
IRCU/IRCUDAN
IRD
IRD