Keysight Technologies B2980A Series Technical Overview page 10

10 | Keysight | Photodiode Test Using the Keysight B2980A Series - Technical Overview
Performing photodiode dark current measurements
After configuring the instrument, perform the following procedures to execute PD dark
current measurements.
If you are using the front panel, trigger the B2985A/87A to start sweeping the reverse-bias
voltage to the PD by pressing
If you are controlling the instrument remotely using SCPI commands, then send the
":INIT (@1)" command to the instrument to start the dark current measurement.
The measurement results can be displayed on the B2985A/87A's graphical user interface
as shown in Figure 2. The Graph View function allows you examine the measurement
results quickly.
Figure 2. Photodiode dark current measurement results
The APD dark current measurements are performed by the same procedures as shown
in Figure 3.
Figure 3. Avalanche photodiode dark current measurement results
.