95x Series Operating Manual - May 17, 2022
Page 86 of 155
Example 2 -
It is required to test that a DUT chassis is bonded to its grounding terminal with no more than 0.1Ω impedance at
40Arms when tested for at least 30 seconds. The source of the test current must be maintained below 5Vrms at all
times to avoid corrosion breakthrough.
This is accomplished in a single step as follows –
Seq 1 Step 1 GB Require a voltage limit, so use GB
LEVEL:40.000A 60.0Hz As required
V CLAMP: 5.0V As required
DWELL: 30.0sec As required
Test: RMS As required
Lim: 0.0u-100.0mΩ As required
DISCHARGE: FAST
ON FAIL: ABORT SEQ
Example 3 –
It is required to test that a line filter inductor is within ±10% of its 1mH nominal inductance and <10mΩ resistance
at both 1A @ 60Hz and 10Arms @ 60Hz. At 60Hz the reactance of 1mH is given by 2.π.F.L = 2*3.1416*60.0*0.001
= 0.37699Ω, which is a voltage drop of nominally 3.7699V at 10A so is within the capabilities of the 95x. It has
been decided to only test the resistance at the 10A level as that test is the most demanding. It is desired to
perform all tests within less than 0.5 second to ensure production throughput.
This is accomplished in three steps as follows –
Seq 1 Step 1 GB Not testing RMS impedance, so use GB
LEVEL: 1.000A 60.0Hz As required, perform the 1A test of inductance first
V CLAMP: 8.0V Not needed, so set to the maximum
DWELL: 0.1sec No timing requirement, so perform a fast test
Test: QUAD Test the inductance
Lim: 339.3m-414.7mΩ As required
DISCHARGE: NONE Don’t discharge before the next test, saves test time
ON FAIL: ABORT SEQ
Seq 1 Step 2 GB Not testing RMS impedance, so use GB
LEVEL:10.000A 60.0Hz As required
V CLAMP: 8.0V Not needed, so set to the maximum
DWELL: 0.1sec No timing requirement, so perform a fast test
Test: QUAD Test the inductance
Lim: 339.3m-414.7mΩ As required
DISCHARGE: NONE Don’t discharge before the next test, saves test time
ON FAIL: ABORT SEQ
Seq 1 Step 3 GB Not testing RMS impedance, so use GB
LEVEL:10.000A 60.0Hz As required
V CLAMP: 8.0V Not needed, so set to the maximum
DWELL: 0.1sec No timing requirement, so perform a fast test
Test: INPHS Test the resistance
Lim: 0.0u-10.00mΩ As required
DISCHARGE: FAST
ON FAIL: ABORT SEQ
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