Rockwell Automation 1788 NetLinx Media Checker Users Manual - Manual (Page 43)

Specifications 43
1788-UM002A-US-P – April 2000
Table 20. DH+/RIO Cable Test Specifications
Cable Length Distance to Short
Cable 1
Range Accuracy Resolution
2
Accuracy
3
Resolution
2
DH+/RIO 1770-CD
DH+/RIO 9022
DH+/RIO 9463
1 m to 350 m
(2 ft to 999 ft)
7 % + 2 m (6 ft) See Note 2
7 % + 3 m
(7 % + 10 ft)
0.5 m (1 ft)
1. For these cable types, the length to an open is displayed, but the “OPEN” error message is not displayed.
2. 0.5 m (1 ft) for cables <100 m long (328 ft); 1 m (5 ft) for cables >100 m long; 1 ft (0.5 m) for cables to 999 ft long (305 m); 10 ft (3 m)
for cables >999 ft long.
3. For the data pair only.
Table 21. Ethernet Cable Test Specifications
Test Range Accuracy Resolution
2
Cable length 7 % + 0.5 m (1 ft)
Distance to short 7 % + 3 m (7 % + 10 ft)
Distance to open 7 % + 3 m (7 % + 10 ft)
0.5 m (1 ft)
Split pairs
1
1 m to 350 m (2 ft to 999 ft)
NA NA
1. Testing for split pairs requires 2 or more pairs with similar capacitance. Split pair section of the cable must be at least 2 meters (6 ft)
long and greater than 10 % of the total cable length.
2. 0.5 m (1 ft) for cables <100 m long (328 ft); 1 m (5 ft) for cables >100 m long; 1 ft (0.5 m) for cables to 999 ft long (305 m); 10 ft (3 m) for
cables >999 ft long.