Racal Instruments 2251A Operator's Manual page 96

Measurement Cycle = Processing Time + Trigger time + Meas. Time
Measurement Cycle = 50 mS + (500 mS + 500 mS) + 2.004250 mS
Measurement Cycle = 1.052004250 S
An examination of the measurement calculations indicate that trigger times are a significant
component of the measurement cycle time. Up to 2 second of time is contributed by auto-
trigger. This can be eliminated by using the manual trigger mode which does not add to the
measurement cycle time.
The next major component is the gate time for frequency/period and ratio measurements.
Up to 10 S can be added to the measurement cycle time if 10 digits of resolution is required.
Thus, when considering measurement cycle time, the user needs to consider the trade-off
between high resolution and prolonged measurement times.
5-13
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com