ITech IT7900P Series User Manual page 121

Notice:
⚫ The connection cables from the cabinet terminals to the mid-node are
as short as possible and bundled up after the connection is completed.
The cable length from the two cabinets must be the same.
⚫ Connect TX, RX fiber cable of two cabinets for communication,
connected in the same way as a 3U model instrument.
⚫ Each cabinet has a red role selection button that allows the user to
switch the red button to select the present instrument as a master or as
a slave.
When paralleling as a master role, several cabinets in parallel need
◼
to be powered on or powered down separately.
◼ When parallel as a slave role, the present slave cabinet up and
Copyright ©ITECH Electronic Co., Ltd.
System-Related Functions
119