Tektronix Keithley 2651A Reference Manual page 77

Section 2: General operation
Pulse characteristics of the Model 2651A
When combining the outputs of two Model 2651A High Power System SourceMeter
restrict operation to pulse only for all operating areas (both the standard and the extended operating
areas). The following figure and table illustrate the pulse regions for each SMU when used in
combination with another SMU. Refer to the Model 2651A specifications on
latest pulse width and duty cycle information. Measurements are given priority over source and
display operations, so make sure that the measurement time does not exceed the allowable pulse
width and duty cycle in a particular pulse region.
Pulse region specification
Region (quadrant diagram)
2
3
4
5
6
7
2-52
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Figure 16: SMU pulse regions when combining SMUs
Region maximum
30 A at 10 V
20 A at 20 V
10 A at 40 V
50 A at 10 V
50 A at 20 V
50 A at 40 V
Maximum pulse width Maximum duty cycle
1 ms 50%
1.5 ms 40%
1.5 ms 40%
1 ms 35%
330 µs 10%
300 µs 1%
2651A-901-01 Rev. C October 2021
® Instruments,
tek.com/keithley for the