Chapter 3 Ethernet Testing
Transmitting patterns
86
HST-3000 Ethernet Testing User’s Guide
To transmit patterns
1 If you haven’t already done so, launch the Terminate
application for the circuit you are testing (see “Launching
an application” on page 28), and then select the
Layer 2 Patterns test (see “Selecting a layer 2 test” on
page 46).
2 Initialize the link (see “Initializing the link for Ethernet
testing” on page 47).
3 Press the Configure navigation key.
A configuration menu appears.
4 Use the left and right arrow keys to go to the Patterns
menu.
5 Select one of the following patterns:
6 If you need to specify other settings for the test, use the
left and right arrow keys to go to the appropriate menu;
otherwise, press the Home button to return to the Main
screen.
7 To insert the pattern, press the Action soft key, and then
select Start Pattern.
The pattern is transmitted.
Pattern Emulates
CRPAT A worst case scenario for deterministic
jitter by transmitting frames with a broad
spectral content.
CJPAT Stress the timing margins in the
received eye by exposing the data sam-
pling circuits to large systematic phase
jumps.
CSPAT Emulate a worst case scenario for
power supply noise within network
transceivers.
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