Chapter 7 Test Results
Pulse shape results
SmartClass E1 Tester User’s Guide 87
Error results, key results that are out-of-specification, or key informational
results are displayed. This allows quick access to the results without having to
search each category
Table 20 describes the results that appear in the Pulse Shape Summary cate-
gory.
Table 20 Pulse Shape Summary results
Result Definition
LOS Seconds Total number of test seconds in which loss of sig-
nal was detected.
Code Errors Number of detected violations of the selected
encoding method.
LOF Seconds Seconds in which loss of framing occurred.
FAS Word Errors Number of errored FAS words received since ini-
tial frame sync.
Pattern Sync Loss Seconds Total number of test seconds in which loss of pat-
tern sync was detected.
Pattern Slip Seconds Total number of test seconds in which pattern
slips were detected.
TSE Number of Test Sequence Errors (bit errors).
Level Signal level measured in volts base-peak (Vb-p).
Measured Pulse Width This indicates the pulse width at the 50% point of
the waveform.
Rise Time This indicates the rise time of the leading edge
between the 10% and 90% points of the wave-
form.
Fall Time This indicates the fall time of the trailing edge
between the 90% and 10% points of the wave-
form.
Overshoot This is the amount of the leading edge that rises
above the 100% point of the waveform.
Undershoot This is the amount of the trailing edge that falls
below the zero point of the waveform.
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