Power Supply Function
equipment for a supply voltage of 42V - Electrical loads. The user can directly
and quickly recall this function during test.
ISO21848 Simulate the curve of “Electrical and electronic equipment
for a supply voltage of 42 V — Electrical loads”
U
max,dyn
U
max,dyn
Test pulse
Momentary-Drop Transit voltage drop
Reset Reset test supply voltage
Ulow Set supply voltage
Start Startup pulse
Recall the Waveform
Take Momentary-Drop as an example to introduce the procedures as follows:
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 ISO21848, and press [Enter] to confirm.
4. Press the Left/Right key to select Momentary-Drop, and press [Enter] to
confirm.
The interface returns to the main interface of the system and displays
MOMENTARY-DROP.
5. Press [On/Off] on the front panel to turn on the output.
6. 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.
U
max,dyn
Test Pulse
Detect the function when the DUT is under maximum dynamic Voltage U
max,dyn
,
and simulate the maximum dynamic Voltage of high-energy pulse raised from
throw load in 42V electrical system, where the upper limit is the protection volt-
age of throw load.
After turning on [On/Off] and triggering the waveform output, the instrument will
apply a test pulse to the DUT, as shown below:
Copyright © Itech Electronic Co., Ltd.
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