Teledyne LeCroy QPHY-10GBase-KR - Manual (Page 19)

QPHY-10GBase-KR Operator’s Manual
QPHY-10GBase-KR Test Descriptions
These are the standard 10GBase-KR compliance tests.
Jitter: Tj, Rj, Dj, DCD & BitRate
This test measures all timing parameters that can be measured on a PRBS or scrambled data
signal. The measurements are directly produced by SDAII or SDAIII.
Voltage Measurements Single Ended – on 0101
This test measures MaxDiffPPOutVoltage, MaxCommonMode and MinCommonMode, and
DutyCycle. MaxCommonMode is 1.9V. The MinDiffCommonMode limit is -0.04 V, even though
the spec is 0, so that readings within scope tolerance for DC accuracy will pass.
Voltage Measurements Differential – on 0101
This test measures MaxDiffPPOutVoltage and Duty Cycle. It is not possible to measure
common mode voltage through a differential probe; the probe does its best to suppress
common mode.
Transition Time Test
This test measures Rise 20%-80% and Fall 80%-20%. Results must be between 24 and 47ps.
TX Output Waveform Tests
See IEEE Std 802.3 sections:
• 72.7.1.10 Transmitter output waveform
• 72.7.1.11 Transmitter output waveform requirements (Table 72-8 and requirements that
follow it, particularly)
• TX EQ part 1: C(0) min, C(1) and C(-1) disabled
• TX EQ part 2: C(0) max, C(1) and C(-1) disabled
• TX EQ part 3: C(0) and C(1) min, C(-1) disabled
• TX EQ part 4: C(0) and C(-1) min, C(1) disabled
In each of these sections several “level matching” requirements are checked, and the invariant
requirements on “delta V2” and “delta V5” are checked.
923664 Rev A 15