User`s guide

Using the HotWire Diagnostics Utility
3-10
5100-A2-GB22-00
December 1996
Running Loopback Tests
Loopback tests can help you isolate areas of trouble if you are having problems
with RTU operation or transmission. During a loopback test:
H Your card’s Test LED is solid yellow.
H Any data received from the network during loopback testing is lost.
H Test operation is uni-directional, meaning that data is looped back to the PC
end of the connection only.
" Procedure
To perform a loopback test:
1. Select Loopback from the Diagnostics
menu.
2. Click on one of the following:
— Local to perform local
Databus to RTU path testing
— Remote to perform local
Databus to Central Office
HotWire card path testing
— Internal Ethernet to perform
local Databus to LAN path
testing
— External Ethernet to perform
local Databus to LAN path
testing
3. If desired, click on Options to
specify the test parameters
identified in the Loopback Options
screen. If not, go to Step 4.
The Loopback Options screen enables
you to specify:
— Packet Count to indicate the
number of packets to be tested.
The default is 10.
— Packet Size to indicate the size of packets to be tested. The default is
64 bytes.