User`s guide

Agilent 4155C/4156C User’s Guide Vol.2, Edition 6 3-13
Sampling Measurements
Measurement Functions
Linear Sampling Measurement
Linear sampling mode keeps a constant sampling interval that is the interval of
measurement trigger. And if the measurement units are ready to measure, the units
start measurement, and the result data is stored in memory. This is repeated until one
of the sampling completion conditions is satisfied.
However, if both the following two conditions occur, linear sampling mode changes
the sampling interval to two times the previous sampling interval, and continues
sampling measurement.
• number of sampling points reaches specified NO.OF SAMPLES
• sampling completion condition is not satisfied
Example Operation
This example assumes the following sampling setup:
• INITIAL INTERVAL value is longer than the measurement time
• NO.OF SAMPLES value is set to 10
• TOTAL SAMP.TIME is long (for example, 50 × INITIAL INTERVAL). Do
not set to AUTO which enables the number of sampling points sampling
completion condition.
1. Executes one point measurement, and stores data in memory. Repeats this 10
times every sampling interval (INITIAL INTERVAL setting value) because of
the sampling interval enough longer than the measurement time.
2. If the sampling completion condition is not satisfied after 10 points
measurement, linear sampling mode changes the sampling interval to two times
the INITIAL INTERVAL, and continues sampling measurement.
To store new measurement data, linear sampling mode discards a data every
couple of nearest data as shown above. Data is updated every measurement.