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22 | Keysight | Photodiode Test Using the Keysight B2980A Series - Technical Overview
Perform LIV Sweep Measurement
After configuring each instrument, execute the following procedures to perform laser
diode LIV sweep measurements.
Initiate the B2985A/87A to receive trigger signals from the B2911A by pressing
,
,
,
.
Initiate the B2911A to start sweeping drive current to the LD and send trigger signals
after each current step by pressing
,
,
,
.
If you prefer to initiate the instruments using SCPI commands, send an ":INIT (@1)" com-
mand to the B2985A/87A first, and then send an ":INIT (@1)" command to the B2911A to
start the LIV sweep measurement.
The measurement results can be seen from the graphical user interfaces of the
B2985A/87A and B2911A as shown in Figure 6. The Graph View function allows you to
quickly examine measurement results.
Figure 6. LD voltage and PD current measurement results
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