8-32 Source-Measure Concepts
Series 2600 System SourceMeters Reference Manual
2600S-901-01 Rev. A / May 2006
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Pulse concepts
Using factory scripts, the Series 2600 can perform fixed, linear staircase, and
logarithmic staircase pulse sweeps (see “
for more
information). The following paragraphs discuss pulse period, rise and fall times,
and duty cycle. See the specifications in
for details on source
transient response and settling times. Additional settling time considerations are
discussed in “
” later in this section.
Pulse period
As shown in
, the pulse period is the sum of the pulse on time (pulse
width) and the pulse off time. When the pulse is off, the output assumes a 0V or
0A level, depending on the function used. When the pulse is on, the output
assumes the programmed current or voltage source value. For the fixed pulse
sweep, the amplitude of each pulse is the same. For the staircase sweeps, each
pulse assumes the programmed sweep step value. Pulse on and off times can be
separately programmed for each type of pulse sweep.
Figure 8-16
Pulse period
Pulse Period
0V or 0A
Off-Time
Pulse Width
(On-Time)
Pulse rise and fall times
As shown in
, the pulse rise time is the interval it takes the pulse to go
from 10% of maximum value to 90% of maximum value. For the Series 2600,
pulse rise and fall times depend on the transient response and source output
settling times, which are in turn affected by the selected source range. See the
specifications in
for details on transient response and source settling
times.
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