4 Operating the Power System
92 Keysight N6700 User’s Guide
If a power module has simultaneous measurements (see chapter 1,
“Model Differences”), you can enable BOTH voltage and current
measurements on the same output channel. Power modules that do not
have simultaneous measurement capability cannot externally log both
voltage and current.
Some power modules also have multiple measurement ranges. Selecting
a lower measurement range provides greater measurement accuracy,
provided that the measurement does not exceed the range. To select
lower measurement ranges, use:
Not Available.
To set the 5 V measurement range:
SENS:ELOG:VOLT:RANG 5,(@1)
To set the 1 A measurement range:
SENS:ELOG:CURR:RANG 1,(@1)
Seamless voltage and current measurement autoranging is available on
Keysight Models N6781A, N6782A, N6785A, and N6786A. This enables a
wide dynamic measurement range with no data lost across ranges.
Autoranging does not include the 10 μA range, which must be selected
manually.
Not Available
To enable seamless elog autoranging:
SENS:ELOG:VOLT:RANG:AUTO ON,(@1)
SENS:ELOG:CURR:RANG:AUTO ON,(@1)
Specify the Integration Period
The integration period can be set from a minimum of 102.4
microseconds to a maximum of 60 seconds.
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To set an integration period of 600 microseconds:
SENS:ELOG:PER 600E-6,(@1)
During the integration period, data log samples are averaged, and the
minimum and maximum values are tracked. At the end of each
integration period the average, minimum, and maximum values are
added to the internal FIFO buffer.
Although the absolute minimum integration period is 102.4
microseconds, the actual minimum varies as a function of the number of
parameters that are being logged. The actual minimum is 102.4
microseconds times the number of parameters being logged at each
interval. Note that you can measure up to 4 parameters with the time
interval resolution set to 20 microseconds, and up t o 8 parameters with
the resolution set to 40 microseconds.
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