Network Analyzer Measurement Cycle - HP 8510 User Manual

Figure 8-1. Network Analyzer Measurement Cycle
Each measurement cycle is initiated by the falling edge of the TTL signal at the rear panel
external Trigger Input, or the internal 8510 logic, depending upon whether external or internal
triggering is selected. At the appropriate time after the trigger, the measurement is made.
If averaging is turned On but not completed, the process waits for the next trigger to make
the next measurement for that data point. If averaging is complete but another parameter is
required (2-Port correction is On), the next parameter is selected and the process waits for the
next trigger. When all data for that point is acquired, then the process moves to the next
point, changing the frequency if in the frequency domain, or the time if in the pulse pro le
domain, then waits for the next trigger.
These times are representative typical measurement cycle times using preset values for the
analyzer controls.
8-2 General Timing Information