Opp Test Function - Rigol DL3021 User Manual

RIGOL

OPP Test Function

OPP test principle (as shown in Figure 2-32):
When the OPP test starts, after the input voltage reaches Von, the load will delay for
a period, then the DUT starts to work according to the starting power. The power
increases with increasing with incrementing steps at a certain interval. Meanwhile,
the load will compare the detected voltage value with the protection voltage value of
the OPP test. If higher than the protection voltage value, the load proceeds to run
and increases with incrementing steps until reaching the protection voltage.
If OPP occurs to the DUT, judge whether the power under test is within the set
maximum and minimum power range. If yes, the load passes the OPP test; if no, the
load fails the test.
If no OPP occurs to the DUT and the set protection time times out, the load
automatically stops sinking. The OPP test fails, and the test ends.
Operation Procedures:
1. Connect the DUT and the channel input terminals of the load
Turn off the instrument, as shown in Figure 2-2, connect the DUT and the
channel input terminals on the front panel of the load.
CAUTION
While making a connection, the positive polarity of the load should
be connected to the (+) terminal of the channel output, and the
negative polarity of the load to the (-) terminal of the channel
output. A misconnection with the terminals may cause damage to
the instrument or the DUT.
2-52
V V V
P
Starting Power
Step Delay
Figure 2-32 OPP Test Function
Chapter 2 Front Panel Operations
Output Voltage of DUT
Load Power
Step Power
End Power
t
t t
DL3000 User's Guide