EM TEST (Switzerland) GmbH
PFM 200N100.1
User’s Guide
Ver. 1.12
25 / 43
7.2.
Test Case 2 S1 Switched, S2 Negated to S1
At the same as S1 switches open, S2 discharges
the DUT in the µs range. Any capacitance present
at the DUT input will be very quickly discharged.
This is the most severe case for interruptions
because the voltage stored is rapidly discharged.
Figure 7.7: Test Setup for Test Case 2
Switch S2 is integrated in the PFM 200N100.1 and discharges the DUT through a low impedance of <
< 100 m
Ω (consisting of only the switch and associated interconnections).
7.2.1. Testing with the AutoWave.control Software
Select from the Standard Library the path
-
Open / Automotive / OEM / LV 124 / (2013-02) / 12V System / E-10 Short Interrupts from the
list, select Test Case 2
– tmin to tmax tmin to tmax, for example, “Test Case 2 – 10µs to 2s“ (all
tests in one sequence)
-
Open the file with
Select
Figure 7.8 shows the test window for E-10 Test
Case 2 with a sequence from 100ms to 2s for the
interruptions.
Sequence 1
: One second of 11.0 VDC
Sequence 2
: Sequence with interruptions from
10µs to 90µs in 10µs steps
Sequence 3
: Highlighted
sequence
with
interruptions from 100µs to 900µs in
100µs steps
Sequence 4-6
: Remaining sequences with
interruptions from 1 ms to 2s with
increasing step sizes
Checking the Settings:
1
Sequence 3 with the necessary settings and
parameters
2
Discharge Switch <100m
Ω
(S2) that is
negated to S1P. All other switches remain
open.
Figure 7.8: Test Window for E-10 Test Case 2
