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Operating Basics
R&S
®
NGL200/NGM200
42User Manual 1178.8736.02 ─ 09
Figure 5-11: Output performance graph
5.5 Operation Modes
The R&S NGL/NGM operates in three different modes, i.e. the constant voltage (CV),
constant current (CC) and constant resistance (CR). The instrument switches automat-
ically between CV and CC depending on the connected load. When CR is
configured,
the instrument is not switched to CR mode automatically, it will operate in CR mode
when sinking but source in CV or CC mode.
CV mode
Figure 5-12 shows that if the instrument is in the range of voltage regulation, the output
voltage V
out
remains constant while the current may increase to its maximum value I
max
when the connected load is increasing. In CV mode, the font text in the channel display
area changes to green.
See
Figure 5-3.
Figure 5-12: Current limit
CC mode
The current I
max
corresponds to the current setting adjustable in the instrument.
Operation Modes
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