User`s guide

4 Operating the Power System
80 Series N6700 User’s Guide
Seamless Measurements
Seamless voltage and current measurement autoranging is available
on Agilent Models N6781A and N6782A. 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.
Front Panel:
SCPI Command:
Not Available To enable seamless voltage or current
autoranging on channel 1:
SENS:VOLT:RANG:AUTO ON, (@1)
SENS:CURR:RANG:AUTO ON, (@1)
Adjust the Measurement Sample Rate
The following figure illustrates the relationship between
measurement samples (or points), and the time interval between
samples in a typical measurement.
You can vary the measurement data sampling rate as follows:
Front Panel:
SCPI Command:
Select Measure\Sweep.
Enter the number of points and
press Select. Scroll to Time Interval,
enter a value and press Select.
To set the time interval to 60µs* with
4096 samples, use:
SENS:SWE:TINT 60E-6, (@1)
SENS:SWE:POIN 4096, (@1)
The maximum number of sample points that are available for all
measurements is 512 K points (K = 1024). If you specify a voltage
measurement with 500 K points on channel 1 for example, you will
only have 12 K points available for all other measurements.
Time interval values can range from 5.12 microseconds (for one
parameter on Models N678xA SMU) to 40,000 seconds. Note that the
shortest time interval (fastest speed) that can be specified depends
on the number of parameters that are being measured, the model that
is doing the measuring, and the time interval resolution.
5.12 microseconds:
10.24 microseconds:
20.48 microseconds:
20.48 microseconds:
1 parameter (models N678xA SMU only)
1 or 2 parameters (all models)
3 or 4 parameters (all models, with 20 µs resolution)
Up to 8 parameters (all models, with 40 µs resolution)
ACQUISITION TIME
(TIME INTERVAL X #SAMPLES - 1)
TIME INTERVAL BETWEEN SAMPLES
TRIGGER
OCCURS
MEASUREMENT
SAMPLE (POINT)