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NOTICE
• When connecting DUs/IUs, never exceed the number of connectable DUs/IUs and the connectable length. It may damage the
CU or the EXTs.
• Depending on the CU settings, you can also connect the DUs/IUs to the CU LINK terminals by configuring them as DU CHAIN
C/D terminals. However, if the number of the DUs connected to the DU CHAIN A/B terminals has not reached the maximum,
be sure to connect them to the DU CHAIN A/B terminals.
• The above tables and precautions for DUs are also for INTs. However, a maximum number of 6 INTs can be connected to one
system.
• The combinations shown above are representative examples. For other combinations, please inquire with our sales representative.
• The position in which to connect the EXTs should have the same number of DUs (A, B, and C in the following diagram) between
EXT-EXT as there are between CU-EXT connected to the CU 1 port.
For example, do the connections as follows for an L1 = 10 m, L2 = 1.5 m, and L3 = 10 m, with 50 units connected to a 1 port
daisy connection.
ATUC-50DU
ATLK-EXT165
L1
L2
L2
L1
L3
L2
L2
L3
L3
L2
L2
A=17
B=17
C=16
ATUC-50CU
