Keithley 2520, Руководство пользователя, Страница: 288 / 329

F-4 Measurement Considerations Model 2520 User’s Manual
A comparison of operating conditions is shown in Figure F-2 and Figure F-3 . Figure F-2
shows the settled response for 4A into 1.6
Ω
using 3m of cable. Inductance is excessive in
this case, resulting in the first settled reading at 1.7
µ
s, as opposed to 1.5
µ
s (a 1
µ
s delay
was used before the pulse).
Figure F-3 shows the settled response of 0.45A into 16
Ω
, also using 3m of cable. The
response is clean because di/dt is much lower.
Figure F-2
Rise time of 4A current pulse
4.5
0.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 1 1.5 2 2.5
Current
(A)
Time (
µ
s)