6-40 Maintenance
6.9.3.2.6 High-speed waveform adjustment
Adjustment standard
WS45x
DC 50Ω, 10mV/div Overshoot / ringing 7% or less
DC 50Ω, 500mV/div Overshoot / ringing 12% or less (PSPL4050)
9% or less (PSPL2600)
WS43x
DC 50Ω, 10mV/div Overshoot / ringing 5% or less
DC 50Ω, 500mV/div Overshoot / ringing 9% or less (PSPL4050)
7% or less (PSPL2600)
WS42x
DC 50Ω, 10mV/div Overshoot / ringing 3% or less
DC 50Ω, 500mV/div Overshoot / ringing 7% or less (PSPL4050)
6% or less (PSPL2600)
Setting Reference waveform PSPL TD-1107B + 16dB ATT (DC 50Ω, 10mV/div)
Reference waveform PSPL 4050 (4500) + 6dB ATT (DC 50Ω, 500mV/div)
Adjustment method
(1) At 10mV/div and an amplitude of approximately 4.0div, adjust the
waveform. Set the frequency response to the range of 4.7 to 4.9 /
6.0div.
(2) At 500mV/div and an amplitude of approximately 6.0div, adjust the
waveform so that overshoot is within the standard range.
(3) Adjust the frequency response (500MHz) to be in the range of 3.7 to
3.9 / 5.0div.
Adjustment locations
CH1 CH2 CH3 CH4
10mV/div 2R28
3R28
4R28
5R28
500mV/div 2C38 3C38 4C38 5C38
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