User manual

Connecting the Interface Card 4-7
1784-6.5.27 - September 1997
Table 4.D Selecting the External Resistor
The maximum number of:
If your remote I/O link:
use this
resistor
rating:
physical
devices
connected
on the link:
racks that
you can scan
on the link:
operates at 230.4 K bits
82Ω 32 16
operates at 57.6 or 115.2K bit/s, and no devices
listed below are linked:
Scanners:
1771-SN; 1772-SD, -SD2;
1775-SR, -S4A, -S4B;
6008-SQH1, -SQH2
Adapters
1771-AS; 1771-ASB (series A
only); 1771-DCM
Miscellaneous 1771-AF
connects to any device listed below:
150Ω 16 16
Scanners
1771-SN; 1772-SD, -SD2;
1775-SR, -S4A, -S4B;
6008-SQH1, -SQH2
Adapters
1771-AS; 1771-ASB (series A
only); 1771-DCM
Miscellaneous 1771-AF
operates at 57.6 or 115.2K bit/s, and you do not
require over 16 physical devices