ADLINK USB-3488A - Manual (Page 25)

Installation 17
2.5.4 Cabling
The following connection configuration can ensure that the GPIB
throughput achieves optimal performance. These configurations
include the number of instruments and cable distances:
 Cable lengths should be no longer than 4 meters (2 meter
lengths maximum is suggested).
 The total GPIB BUS distance should be less than 20 meter.
 The total number of devices must less than 15 (including
computer itself), and at least two-thrids (2/3) of the devices
are powered on.
Devices can be connected in a linear configuration, star configura-
tion, or combination the two. The following figures show both lin-
ear and star connections.
Note: For a star connection, the total current load will be less if
there are less than three cable connections on an individual
instrument.
Figure 2-4: LPCI-3488A Linear Connection Configuration