Visara SCON-25L Reference Manual - Manual (Page 23)

707028-007 2-13
Chapter 2. Installation
Connecting to the Middle of a Channel
Refer to Figure 2-7.
1. Ensure that the host processor/channel is in a stop state before disconnecting
any channel cables or terminator blocks.
2. Label each end of one of the new channel cables Bus; label each end of the
other new channel cable Tag.
3. Connect the light colored ends of the new Bus and Tag cables to the Bus In
and Tag In receptacles on the BTC-C.
4. Disconnect the existing Bus and Tag cables from the Bus Out and Tag Out
receptacles of the existing unit upstream of the final location of the unit. Ensure
that the cable ends are identified as Bus and Tag as they are removed so they will
be reconnected in the correct receptacles.
5. Connect the dark colored ends of the new Bus and Tag cables to the Bus Out and
Tag Out receptacles of the existing unit upstream of the final location of the unit.
6. Connect the existing Bus and Tag cables to the Bus Out and Tag Out receptacles of
the BTC-C.
Unit
Figure 2-7. Middle/Replacement Connection to Channel
Replacing a Unit on a Channel
Refer to Figure 2-7.
1. Ensure that the host processor/channel is in a stop state before disconnecting any
channel cables or terminator blocks.
2. Disconnect the existing Bus and Tag cables from the Bus Out and Tag Out
receptacles of the existing unit. Ensure that the cable ends are identified as Bus and
Tag as they are removed so they will be reconnected in the correct receptacles.
These cables have dark colored ends.