06 | Keysight | Low Current Semiconductor Measurements Using the B2980A Series Ammeter - Technical Overview
4. Histogram View enables real-time data distribution analysis
(continued)
conjunction with the Histogram View to improve data quality
-
tion and data averaging.
Measurement steps on B2985A/87A front panel operation
This section gives step-by-step instructions on how to use the B2980A’s Femto/Picoam-
voltage to the LED.
Figure 5 shows the proper connections to measure the I/V charac-
teristics of an LED. Note that it is important to connect the ammeter
common to the chassis ground using the banana to lug cable as
then this ground connection is not necessary.
(a) 0.1 PLC speed measurement. (b) Normal speed measurement using the data averaging.
Measurement condition:
- Speed: 0.1 PLC
- Filtering: None
Measurement condition:
- Speed: Normal
- Filtering: Moving average (100 points)
9.5X improvement
in noise distribution
Figure 4. Using histogram view and other functions to improve measurement data.
A
A
+
+
Vs
VsHigh
Ammeter
Common
LED
Test Fixture (N1295A)
J1
B2980A Series
Triax cable
Connect with the
Banana to lug cable
Chassis ground
Vs Low
N1254A-101
adapter
Coax
cable
adapter
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