Rise Time And Overshoot Performance Verification - Keysight Technologies U2020 X Series Service Manual

Rise Time and Overshoot Performance Verification

Rise time verification is required to verify the system rise time of the analog
measurement path, from the bulkhead to the inputs of the analog-to-digital
converter (ADC). A pulse generator is used to modulate an RF signal generator
with fast rise time, and this is captured by the ADC. An equivalent time sampling
method is used to calculate the rise time of the captured trace.
This performance verification requires the following equipment:
– PSG analog signal generator (E8257D)
– Pulse pattern generator (81130A)
System specifications:
– Rise/fall time:
– Overshoot: <0.5% [With the video bandwidth turned off.]
Measured rise time percentage error versus signal-under-test rise time
Figure 2-1
Keysight U2020 X-Series Service Guide
13 nsecs ± % error (Refer to
≤
bandwidth turned off, the measured signal frequency is
Measured rise time percentage error versus signal-under-test
rise time
Performance Verification and Adjustments
Figure 2-1) [With the video
500 MHz.]
≥
2
25