Quick Start Guide

Chapter 2 Function and Features SIGLENT
SDL1000X User Manual 39
output. If an OCPT test fails, the interface of the load will pop-up a
messagebox such as “Below limit ,test fail”, “Over limit , Test fail”, etc.
Then the input channel of the load will be closed automatically.
4. View waveform
Press Display key to enter the waveform display interface, as shown in
figure 2-31. The sink current should have a stepped increase in the
waveform when viewing current (I) data. . Press the Display key again
to exit the waveform display interface and return to the main interface
of OCPT test mode.
Figure 2-31 Waveform display interface of OCPT
OPPT Test Function
When the Over Power Protection Test (OPPT) test starts, if the input
voltage is less than the Von value, the load starts to work after a period of
delay time according to the delay setting. The power increases with
incrementing steps set by P_Step. At each step, the load input voltage is
compared to the overpower protection voltage (OPP_V). If higher, it indicates
that OPPT does not occur. The load proceeds to run and increases the sink
power with regular steps until it reaches the protection voltage setting (OPP_V)
or the last power setting (P_End). If the sink power of the load has reached
the stop value (P_End) , the load output will be closed automatically, the OPPT
test fails, and the test ends. If lower, it indicates that OPPT does occur. If the
measured power under test is within the set maximum (P_MAX) and minimum
power range (P_MIN), the load passes the test. If not, the load fails the test.