User`s guide

5-6
Transmission Specifications
Table 5.2 Doubly-Terminated Bus Topology Specifications
Maximum bus length Maximum stub length Units
Belden 85102 2200 3 meters
Belden 8471 2200 3
Level 4/22AWG 1150 3
JY (St) Y 2x2x0.8 750 3
Table 5.3 Free Topology Specifications
Maximum
node-to-node
distance
Maximum total
wire length
with 10, 5 or
2.5MHz input
clocks
Maximum total
wire length
with 1.25MHz
input clock
Units
Belden 85102 500 500 400 meters
Belden 8471 400 500 400
Level 4/22AWG 400 500 400
JY (St) Y 2x2x0.8 320 500 400
The free topology transmission specification includes two components which must both
be met for proper system operation. The distance from each transceiver to each of the
other transceivers on the network and to the LPI-10 module must not exceed the
maximum node-to-node distance. If multiple paths exist, e.g., a loop topology, then the
longest path should be used for the calculations. The maximum total wire length is the
total amount of wire connected per network segment.