LT-101A User’s Manual
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5.3 Start-up characteristic test
5.3.1 Measurement parameters
(1) Input: It can measure input peak values of voltage and current (impulsion) at
0~40ms when starting the LED driver. The test software can draw the curves of
voltage and current during this time, and calculate the start time according to related
standards and display it.
(2) Output: It can measure output peak RMS values of voltage and current, and the
time of current to get the maximum value at 0~3s when starting the LED driver. The
test software can draw the curves of voltage and current during this time.
Notes: Please pay attention to the difference between start-up time and the time being
displayed after the starting-up. The time being displayed by the instrument is the time
for current to get the maximum value, and start-up time is displayed by the test
software.
5.3.2 Start the start-up characteristic testing
Press "START" to start the start-up characteristic test when it is under the state of
"RUNNING" or "START".
Steps:
1. Press "START" to start the test;
2. If the load switch on front panel is on, input display window will display "PLEASE
TURN OFF" which prompts turning off the load switch. Or else go to step 4;
3. Turn off the load switch;
4. Input display window displays "PLEASE TURN ON", which prompts turning on
the load switch;
5. Turn on the load switch when LED lamp is cooled down;
6.It will sample for 3s when the output display window shows "PLEASE WAIT"
meanwhile the keys are invalid;
7. When " ---- ---- ---- ----" is displayed in output display window , it means there is
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