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Programming Basics
Programming Tips
To Optimize the Measurement Range
The most effective way to improve measurement speed is to reduce the number of
range changes. The limited auto ranging mode is more effective than the auto
ranging mode. The fixed range mode is the most effective.
Check the typical value of the measurement data, select the optimum range, and
perform measurement using the fixed range mode.
To Optimize the Integration Time
For best reliability and repeatability of the measurement data, the integration time or
the number of averaging samples of the A/D converter must be increased. This
increases the measurement time.
A long integration time and numerous samples are required for low current/ voltage
measurements. However, the values can be decreased for medium or high
current/voltage measurements. Enter the following commands:
AV
Sets the number of averaging samples of the A/D converter. This
command is compatible with the AV command of the Agilent 4142B.
AAD
Selects the A/D converter type (high-resolution, high-speed, or
high-speed for pulsed-measurement).
AIT
Sets the integration time or the number of averaging samples. The AIT
command covers the function of the AV command. The last command
setting is available for the measurement.
For more information regarding these commands, see Chapter 4, “Command
Reference.”
To Disable the ADC Zero Function
This information is effective only when the high resolution A/D converter is used
for the measurement. If measurement speed is given top priority or is more
important than reliability, disable the ADC zero function by sending the AZ 0
command. This roughly halves integration time.
NOTE
The ADC zero function is the function to cancel offset of the high resolution ADC.
This function is especially effective for low voltage measurements.
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Agilent B1500A/B1505A Programming Guide, Edition 11