Power Supply Function
microcontroller. Apply the test pulse simultaneously in figure below to all rele-
vant inputs (connections) and check the reset behavior of the DUT. Decrease
the supply voltage by 5 % from the minimum supply voltage, Us min, to 0.95 Us
min. Hold this voltage for 5 s. Raise the voltage to Us min. Hold Us min for at
least 10 s and perform a functional test. Then decrease the voltage to 0.95 Us
min. Continue with steps of 5 % of Us min, as shown in figure below, until the
lower value has reached 0 V. Then raise the voltage to Us min again.
How to recall this waveform from menu is as below:
1. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en-
ter the function menu.
2. Use the knob or press the Up/Down key to select 3.Road-Vehicles = Off
and press [Enter].
3. Press the Left/Right key to select ISO16750-2 and press [Enter] to confirm.
4. Press the Left/Right key to select Reset-Test, and press [Enter] to confirm.
5. Press the numeric keys to set the Usmin, and press [Enter] to confirm.
The interface returns to the main interface of the system and displays
RESET-TEST.
6. Press [On/Off] on the front panel to turn on the output.
7. According to the selected trigger method (same as the trigger method of the
LIST function), for example, press [Shift]+[On/Off](Trigger) to trigger the
output of the waveform.
Starting Waveform
Simulates the effects of rippled DC voltage on DC power when the car is
started. From the constant voltage line in the original standard DIN40839 volt-
age waveform, the voltage curve in t8 duration is upgraded to a curve containing
a 2Hz AC voltage waveform.
Copyright © Itech Electronic Co., Ltd.
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