Measurement Step 5: Set The Starting Point; Measurement Step 6: Start The Measurement - HP 3563A Operating Manual

Measurement Step
After viewing the captured data with the TIME BUFFER display, you may decide that some of the
data should be excluded from the measurement. Time capture measurements can be started at any
point in the captured data block (from the first point in the block to the first point in the last record,
inclusive). The starting point is specified by the current capture pointer position. If the pointer is
not active, the measurement starts at the beginning of the first record.
If you are measuring at a different span than the capture, the digital filter's settling time
requirements can introduce distortion in the first 1/10 record of the measurement. This affects only
measurements that are measured at a different span than the capture. If this presents a problem, set
the starting point of the measurement past the first 1110 of the output record. For example, you
could press CAPTUR POINTR, then enter a value equal to 0.1 times the worn factor, then use the
Record softkey.
Measurement Step
When the HP 3563A is in the time capture mode, pressing START causes the analyzer to measure
from data stored in the time capture memory. All the measurement input data come from the
capture buffer, not from the input channels. Figure 6-1 at the beginning of this chapter summarizes
this action. Because individual records are not triggered, phase displays for time capture
measurements are not accurate.
5:
Set the Starting Point
6:
Start the Measurement
Using The Time Capture Mode
Measuring and Analyzing Captured Data
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