Hp-Ib Bus Restrictions - Bering 3000 Series User Manual

C-2
HP-IB BUS RESTRICTIONS
ADDITIONAL RESTRICTIONS UNDER MULTI-PORTED CONFIGURATION
With long haul Options 521 or 531, the following modification of
the bus restrictions would apply.
1. The maximum length of cable between Port 2 (or Port 3), and the
computer can be extended up to 20 meters. But, the total length
of cables in one HP-IB Bus still limits to 20 meters. In
addition, Port 1 of the disk subsystem should not be more than 2
meters from the computer.
2. At Port 2 or Port 3, the maximum number of devices that can be
connected together in one HP-IB Bus is 8.
3. With Option 531, Port 2 and Port 3 cannot
be
connected together
to the same HP-IB Busj otherwise the bus pre-loading may cause
signal degradation. With no pre-loading at Port 1, connection
of this port with Port 2 or Port 3 is allowed.