Keithley SourceMeter 2400, User Manual, Page: 158 / 594

2400 Series SourceMeter
®
User’s Manual Source-Measure Concepts 6-15
Model 2400 SourceMeter
The general operating boundaries for the Model 2400 are shown in Figure 6-4 . In this
drawing, the 1A, 20V and 100mA, 200V magnitudes are nominal values. The actual max-
imum output magnitudes of the SourceMeter are 1.05A, 21V and 105mA, 210V. Also note
that the boundaries are not drawn to scale.
These operating boundaries are valid only if the SourceMeter is being operated in an envi-
ronment where the ambient temperature is 30˚C or less.
NOTE Above 30˚C, high power operation could overheat the SourceMeter, causing the
output to turn off. See
“Overheating protection,” page 6-6 , and “Power equa-
tions to avoid shutdown,” page 6-7 , for details.
The heavy solid lines show the limits for continuous output operation. Note that in quad-
rants II and IV (sink operation), the limits for the 1A range are derated as follows:
1A Range – Limits linearly derated from: -1A, 20V to -0.6A, 20V
1A, -20V to 0.6A, -20V
If the output duty cycle is decreased to 60% or less, sink operation limits are restored to
normal as shown by the dotted lines in
Figure 6-4 .
Figure 6-4
Model 2400 operating boundaries (T
amb
≤
30°C)
Source
20V
–I
+I
Sink
Sink
Source
(IV)
(I)
(III)
(II)
100mA
600mA
+V –V
= 100% Duty
≤
60% Duty Cycle
-200V
1A
-1A
-600mA
-100mA
-20V
200V
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com