Keithley 2651A Reference Manual page 135

Section 3: Functions and features
Pulsing in the extended operating area (EOA)
Pulse sweeps can be performed outside of the standard operating area by setting the appropriate
compliance level. Review the specifications for the Model 2651A to determine the maximum current
and voltage values available in pulse mode. When pulsing in the extended operating area (EOA), the
source-measure unit (SMU) will force the pulse to end early if the pulse width exceeds the maximum
value. It will also delay the next source action as necessary to stay within the duty cycle capabilities of
the SMU. The following figure and table illustrate the pulse regions for a SMU when pulsing in the
EOA. Refer to the Model 2651A specifications on the
(http://www.keithley.com) for the latest pulse width and duty cycle information.
Pulse region specification
Region
(quadrant
diagram)
1
1
1
2
3
4
5
6
7
3-28
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Figure 41: Pulsing in the extended operating area (EOA)
+50A
+30A
+20A
+10A
+5A
0A
–5A
–10A
–20A
–30A
–50A
–40V –20V
Region Maximum
maximum pulse width
5 A at 40 V DC, no limit
10 A at 20 V DC, no limit
20 A at 10 V DC, no limit
30 A at 10 V 1 ms
20 A at 20 V 1.5 ms
10 A at 40 V 1.5 ms
50 A at 10 V 1 ms
50 A at 20 V
330 μs
50 A at 40 V
300 μs
Keithley Instruments website
6
5
2
3
1
0V +10V +20V
–10V
Maximum
duty cycle
100%
100%
100%
50%
40%
40%
35%
10%
1%
7
4
DC
Pulse
+40V
2651A-901-01 Rev. A / March 2011