Installation guide

Extend Header Selection
Jumper W11 (D11/41) controls the extend header bit, which when
set, allows the LINK module to extend the number of bit-synchronous
characters in the header.
Jumper OUT = Normal header (default)
Jumper IN = Extended header
Extend ACK Timeout Selection
The extend ACKtimeout bit forces the LINK module to increase the timeout
period for an ACK return. The jumper representing this bit is W12 (D12/
42).
Jumper OUT = Short timeout (default)
Jumper IN = Long timeout
Disable Arbitration Selection
The disable arbitration bit when set, defeats the normal arbitration
sequence and allows the LINK module to transmit after waiting only one
basic Quiet Slot DELTA Time. The jumper that controls this bit is W10
(D10/40).
Jumper OUT = Allow normal CI arbitration (default)
Jumper IN = Disable normal CI arbitration
Connecting to a CI VAXcluster 4–15