IBM 5170 - Page 133

2 The Binary Synchronous Communications
(BSC)
adapter is shown below. The primary
and alternate modes are determined by the
position
of the jumper clip on connector P3.
• Installing the jumper clip
on pins 2 and 4
selects the primary mode.
• Installing the jumper clip
on pins 1 and 3
selects the alternate mode.
• Install the jumper clip according
to your
needs.
Connectors P·1 and
P·2 must have
jumpers as shown
for correct
Jumper Position Jumper Position operation of
for Primary Mode for Alternate Mode the adapter.
+ + +
P3 P3
P1 P2
Binary Synchronous Communications Adapter 3-111