Technical data

Source AC Common Mode Noise Single-Ended Tests 16
Agilent U7232A DisplayPort Electrical Performance Compliance Test Application 141
Table 18 Test Configuration Options
Configuration Option Description
Clock Recovery Settings
Clock Recovery Order Set either a second order PLL or a first order PLL method to recover the
clock.
Clock Recovery Loop
Bandwidth (D10.2) - 1.62
Gbps
Sets the 3 dB bandwidth of the loop filter used by the PLL when D10.2
pattern is used. Please specify in correct format; xMHz, xkHz or xHz.
Clock Recovery Loop
Bandwidth (PRBS 7) -
1.62 Gbps
Sets the 3 dB bandwidth of the loop filter used by the PLL when PRBS
7 pattern is used. Please specify in correct format; xMHz, xkHz or xHz.
Clock Recovery Loop
Bandwidth (D10.2) - 2.7
Gbps
Sets the 3 dB bandwidth of the loop filter used by the PLL when D10.2
pattern is used. Please specify in correct format; xMHz, xkHz or xHz.
Clock Recovery Loop
Bandwidth (PRBS 7) - 2.7
Gbps
Sets the 3 dB bandwidth of the loop filter used by the PLL when PRBS
7 pattern is used. Please specify in correct format; xMHz, xkHz or xHz.
Clock Recovery Damping
Factor
Sets the damping factor which is the value that used in designing the
second order PLL to recover the clock. The damping factor and the 3
dB bandwidth of the PLL are related to the natural frequency using the
following equation.
where:
Configurable Parameter Settings
Bandwidth Reduction Specifies the bandwidth frequency for the oscilloscope. This
configuration is only available when the Enhanced Bandwidth or Noise
Reduction option is installed on the oscilloscope.
Vswing Edge Sets the number of Edges used when performing the Vswing
measurement. The Vswing value is used to ensure that the waveform
is displayed as large as possible in the waveform viewing area.
Increasing this value increases the test run time but improves the
repeatability of the measurement.
VTop & VBase Edge Sets the number of edges required when making the VTop and VBase
measurements.
Expert Mode Turn on the expert mode for looser pre-requisite checker.
ω
n
2πF
t
2ζ
2
1– 2ζ
2
1–()
2
1++
-------------------------------------------------------------------=
ω
n
the natural frequency of the PLL=
ζ the dampling factor of the PLL=
F
t
the 3 dB bandwidth of the PLL=