QuadTech 1865, Инструкция по эксплуатации, Страница: 38 / 87

Page 38 of 87 Operation
2.6.2.2 Charge Time
Setup
= 10
= 10 Dwell Time
Measure Time
Voltage = 1000
I/O Utilities
10
Stop on Pass = 0
to Average = 0
#
= 10
Range > >
Limit
= 100 e+ 9
Mode Auto Manual
Charge Time =
Discharge Time
Figure 2-11: Charge Time Entry
Accepts entry of a charge time between 0 and 300 seconds in 1 second intervals (up to 3
digits). If the selection is out of range an error message will be displayed. This marks
the time when the test voltage is first applied and the unit under test is allowed to charge
up to this voltage. Even if the charge time is entered as zero there is still a small delay
during the charge phase. In this case or even with much longer charge times the
possibility exists that full charge voltage may not be reached at the start of the
measurement phase if the DUT has a long time constant.
NOTE
For low voltage measurements (<5V), a minimum charge time of 2 seconds is
recommended to meet the instruments stated accuracy.
2.6.2.3 Dwell Time
Accepts entry of a dwell time (or electrification time) between 0 and 300 seconds in 1
second intervals. This is a time during which the test voltage is applied to the device
under test and prior to any measurement.
2.6.2.4 Measure Time
Accepts entry of a measure time between 0 and 300 seconds in 1 second intervals (0 –
999 seconds on later units). This is the time during which repeated measurements are
made and results displayed as resistance, current, Pass/Fail or no display depending on
the results format selected. The display is updated each time a measurement is made
during this time phase.