Making Measurements - Agilent Technologies N6751A User Manual

4 Operating the Power System

Making Measurements

Simultaneous Voltage and Current Measurements
Measurement Ranges
52
Each output channel has its own measurement capability. The output
voltage and current is measured by acquiring a number of samples at
the selected time interval, applying a window function to the
samples, and averaging the samples.
The power-on and *RST time interval and number of samples settings
yield a measurement time of 21 milliseconds per reading (1024 data
points at 20.48 µs intervals). The output windowing function is
Rectangular. Use the following commands to make a measurement:
Front Panel:
Select the Meter key.
Some models have simultaneous voltage and current measurement
capability (Refer to Chapter 1, "Model Differences"). In this case
BOTH voltage and current are acquired on any measurement,
regardless of the parameter that is being measured. To return both
values of a simultaneous measurement:
Front Panel:
Not available.
Some models have two voltage and current measurement ranges.
(Refer to Chapter 1, "Model Differences"). Selecting a lower
measurement range provides greater measurement accuracy,
provided that the measurement does not exceed the range.
Front Panel:
Select Measure\Range.
Select the desired voltage or
current range and press Select.
The maximum current that can be measured is the maximum rating
of the range. Two examples of programming measurement ranges are:
0.1 A range To select, program values ≤ 0.1A.
3 A range To select, program values > 0.1A and ≤ 3A.
SCPI Command:
To measure the average output
voltage or current, use:
MEAS:VOLT?(@1:4)
MEAS:CURR?(@1:4)
SCPI Command:
First, measure the output voltage (or
current):
MEAS:VOLT?(@1:4)
Then Fetch the other parameter:
FETC:CURR?(@1:4)
SCPI Command:
SENS:CURR:RANG 0.1, (@1)
SENS:VOLT:RANG 5, (@1)
Series N6700 User's Guide