95x Series Operating Manual - May 17, 2022
Page 48 of 155
DISCHARGE: AS RAMP
ON FAIL: ABORT SEQ
An example ACCAP menu is as follows –
Seq 1 Step 1 ACCAP
LEVEL:1500.0V 60.0Hz
BREAKDOWN: 49.50mApk
RAMP: 1.00sec
DWELL: 30.0sec
C: 0.488p-1.512pF
DF: 0.0000-0.0005
ARC DETECT:4us 10mA
DISCHARGE: AS RAMP
ON FAIL: ABORT SEQ
• LEVEL. Allows the test voltage level and frequency to be programmed. Values cannot be set which are
beyond the range of possible output voltages and frequencies from the specific 95x or above the
maximum voltage limit set by the user in the CNFG – TEST – USER MAX ACV setting.
• SOURCE. Only available if Opt. AC-30 is installed. Allows the user to select whether to use the standard
internal source at the front panel HV terminal (INT) or the higher voltage source from the external AC-30
(EXT). This selection is automatically made and is not editable if the programmed level or frequency is
beyond the capability of the other source.
• DUT GROUNDED. Only available if option HSS is installed (and INT is selected in the SOURCE line above if
option AC-30 is also installed). This selection allows the user to select either –
o NO. This selection indicates that the DUT is isolated from ground, the 95x will use the current in
the RETURN terminal to measure leakage and detect breakdown. This is as if option HSS were
not installed.
o YES. This selection indicates that the DUT is grounded, and the breakdown and/or leakage
currents are to be measured to ground. The 95x will use the current in the HV terminal to
measure leakage and detect breakdown.
• BREAKDOWN. Not available for the ACez type. Allows breakdown detection to be programmed as a
maximum instantaneous peak current level. Pressing the LIMIT key while this setting is selected causes it
to be set to the maximum value. See Breakdown Current for further details regarding breakdown
currents.
o The minimum value which can be set is 1uA.
o The maximum value which can be set is as specified in the Peak Shutdown Current portion of
Surge Current Limiting and Shutdown.
• RAMP. Allows the ramp time period to be programmed either as a time or rate. The UNIT key toggles the
selection between these two methods.
• DWELL. Allows the dwell time period to be programmed to the desired time, or it may be set to be user
terminated by pressing the LIMIT key while this setting is selected.
• Test 1 and Test 2. Only available for the ACW type (the ACez type has a single leakage limit range, which is
always enabled and is always the RMS leakage current, the ACCAP type has limits set in different units to
ACez and ACW). These allow the user to define none, 1 or 2 leakage measurements to be checked against
limits. For the test step to successfully pass when run, both the Test 1 and Test 2 measurements must
pass their respective range checks or be disabled. The available selections for each are –
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