Section 7: Theory of operation Model 2601B-PULSE System SourceMeter Instrument Reference Manual
7-14 2601B-PULSE-901-01A April 2020
Current source operating boundaries
The following figures show the operating boundaries for the current source when the pulser is
disabled. Only the first quadrant of operation is shown; operation in the other quadrants is similar.
The first figure shows the output characteristics for the current source. As shown, the 2601B-PULSE
can output up to 1.01 A at 20 V or 3.03 A at 6 V. Note that when sourcing more than 1.01 A, voltage
is limited to 6 V.
Figure 110: I-source output characteristics
The following figure shows the limit lines for the I-source. The current source limit line represents the
maximum source value possible for the presently selected current source range. The voltage
compliance limit line represents the actual compliance that is in effect (see Limits (on page 4-2)).
These limit lines are boundaries that represent the operating limits of the instrument for this quadrant
of operation. The operating point can be anywhere inside (or on) these limit lines. The limit line
boundaries for the other quadrants is similar.
Figure 111: I-source limit lines
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