Models 2500 and 2502 User’s Manual Basic Operation 3-5
Source delay
The source delay options are used to set the settling time for the voltage bias source. This
source delay is the delay phase of the source-delay-measure cycle. (See Section 5, “Mea-
surement Concepts,” for more information.)
Auto delay period
The auto delay period depends both on the current range (Table 3-3) and, during sweeps
(Section 9), on the voltage step size. With the source auto delay mode enabled, the total
source delay for both channels will be the sum of the current-range-based-delay in
Table 3-3 and the voltage slew time for the channel that has the greater total delay. Worst-
case voltage slew time, T
VS
, is given by the equation:
For example, with the 2µA range and a voltage step size of 0.5V, the total delay is:
Delay = 12.25ms + (0.5 × 3.07ms)
Delay = 13.785ms
Table 3-3
Auto source delay
I-range
I-range-based
auto delay
2nA
20nA
200nA
2µA
20µA
200µA
2mA
20mA
16ms
16ms
12.25ms
12.25ms
3.55ms
3.55ms
530us
530us
T
VS
3.07ms()V⁄=
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
To Next Page
Loading...
Need help?
General
