Tektronix 372, User Manual

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Measurement System
372 User Manual
3Ć27
In addition to the start, stop and increment parameters of the master source,
the offset parameter for linear sweep and the ratio parameter for log sweep
can be given to the slave source in sync mode.
The delay time and hold time can be given to eliminate effects caused by
delay characteristics in the rise time and fall time of stepped output from the
DUT (see Figure 3Ć7).
Time Domain Measurement Mode
The 372 also performs time domain measurements that measure voltage or
current changes vs. time. A constant voltage and current can be applied to
the DUT, or they can be changed after a specified length of time. You must
give the following parameters in time domain measurement mode:
Stop Value
Hold Time
Time
Sampling Interval
Start Value
Figure 3Ć8:ăVoltage or Current Changes vs. Time
H Start - The voltage or current at which measurement starts.
H Stop - The voltage or current set in the hold time after measurement
starts.
H Hold Time - The time length that the START value is maintained after
measurement begins. The voltage or current value is changed from the
START value to the STOP value at the time when the HOLD TIME arĆ
rives.
H Sampling Interval - Measurement sampling interval.
Averaging
The averaging feature can be used to minimize random fluctuations in the
measurement results. The four averaging modes are available:
H OFF - Measurement is performed once, with no averaging.
H 4 - Each point is measured four times with the average taken as the
final value.
H 32 - Each point is measured 32 times with the average taken as the
final value.