Measurement Cycle Time; Sweep Time; Pulse Width; Duty Cycle Limit - HP 8510 User Manual

Measurement Cycle Time

Controls that can e ect the measurement cycle time are:

Sweep Time.

When the analyzer is otherwise ready for the next measurement cycle, it ignores
triggering for an interval equal to (Sweep Time (ms)/Number of Points).

Pulse Width.

The pulse always remains On for the user-speci ed time.

Duty Cycle Limit.

When the analyzer is otherwise ready for the next measurement cycle, if the
duty cycle percent maximum limit would be exceeded, the process ignores triggering until the
duty cycle limit is satis ed.
Pulse Profile Domain Stop Time.
determines the measurement cycle time when it is greater than the PRP set by the duty cycle
limit.

Frequency Domain Trigger Delay.

duty cycle limit, trigger delay will control the minimum frequency domain measurement cycle
time.
Additional considerations are:
Pulse Output is set to the active level during measurement of any calibration standard.
Pulse Output is set to the inactive level during the sweep retrace.
Pulse Output is set to the active level for less than 30 microseconds immediately prior to
the beginning of the sweep for the automatic periodic IF calibration sequence.
Pulse Output remains at the inactive level under all conditions when External Triggering is
selected.
The automatic periodic IF calibration sequence is transparent to the operator except for the
less than 30 microsecond pulse output immediately prior to the beginning of a sweep. To the
operator, the IF calibration sequence will appear to occur at random times, more frequently
just after the HP 8510 is turned on, then less often as the system temperature stabilizes.
Measurement Cycle Times
1 ms Next Average
4 to 8 ms Next Parameter
30 to 40 ms Next Frequency Point
(Frequency Domain)
3-4 ms Next Time Point
(Pulse Pro le Domain)
The time value of the current pulse pro le data point
If the frequency domain trigger delay is greater than the
General Timing Information 8-3