8-12 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
If You Have A Problem
When You Make A Measurement
If You Get Unexpected Data when Performing Sampling
Measurement
If initial interval is set to a short time and if FILTER ON is set, you may get
unwanted data. FILTER ON causes a slower rise time, so short initial interval will
sample during this rise time.
To solve this problem:
• Set FILTER field to OFF if you set initial interval to a short time.
Some data may be skipped because measurement takes a long time. Measurement
takes a long time if measurement is performed in a low current range, if many
measurement channels are set up, or if analysis, such as moving a marker, is
performed during measurements.
To solve this problem:
• Measure current using a fixed range that is more than 10 mA. For measurement
ranges 10 mA or less, measurement takes longer than the specified integration
time.
• Decrease measurement channels to reduce measurement time.
Note that the number of measurement channels automatically increases if you do
both the following: force voltage from channels that are connected to R-Box and
display the voltage values or use voltage values in user functions. The channels
automatically measure current, which is used to compensate the voltage values.
• Do not perform analysis operation during measurement state
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