Keithley 4200-SCS Reference Manual page 952

Section 11: Pulse Source-Measure Concepts
VgQPoint
VdQPoint
PulseWidth
PulsePeriod
RiseTime
FallTime
Average
GateVPURange
DrainVPURange
GateSMURange
DrainSMURange
11-84
(double) The base value, or bias point, of the pulsed gate sweep. VgQPoint is
range dependent and must be between -5 V to +5 V or -20 V to +20 V.
(double) The base value, or bias point, of the pulsed drain source. VdQPoint
is range dependent and must be between -10 V to +10 V or -40 V to +40 V.
(double) The Vgs and Vds pulse width (PW). The Pulse Width range: 300 ns
to (1 s - 10 ns) in 10 ns resolution steps.
(double) The pulse period for Vgs and Vds. Minimum period is (FallTime/2) +
(RiseTime/2) + PulseWidth + 10 ns. Maximum period is 1 s.
(double) The transition time from the Qpoint to the pulse value for both Vgs
and Vds. The transition time is source range dependent. For the 5 V range
(10 V for Model 4205-PCU) the minimum transition time is 10 ns
(recommended minimum is 50 ns) and for the 20 V range (40 V for the Model
4205-PCU) the minimum transition time is 100 ns. The maximum transition
time is dependent on the pulse width, period, and fall time.
(double) The transition time from the pulse to the Qpoint value for both Vgs
and Vds. The transition time is source range dependent. For the 5 V range
(10 V for Model 4205-PCU) the minimum transition time is 10 ns
(recommended minimum is 50 ns) and for the 20 V range (40 V for the Model
4205-PCU) the minimum transition time is 100 ns. The maximum transition
time is dependent on the pulse width, period, and fall time.
(int) The number of pulses to average (recommend 100 for a reasonable
result, use larger for lower current measurements).
(double) The source range for gate side PG2. Valid ranges are 5 V (High
Speed) and 20 V (High Voltage).
(double) The source range for the drain side Model 4205-PCU. Valid ranges
are 10 V (High Speed) and 40 V (High Voltage).
(int) The current measurement range to be used for the SMU on the DUT
Gate terminal. Values correspond to the table below. Limited Auto means that
the value given is the minimum measurement range used, with automatic
ranging for larger currents:
1 Full Auto
2 Limited Auto 10 pA
3 Limited Auto 100 pA
4 Limited Auto 1 nA
5 Limited Auto 10 nA
6 Limited Auto 100 nA
7 Limited Auto 1 uA
8 Limited Auto 10 uA
9 Limited Auto 100 uA
10 Limited Auto 1 mA
11 Limited Auto 10 mA
12 Limited Auto 100 mA
(int) The current measurement range to be used for the SMU on the DUT
Drain terminal. Values correspond to the table below. Limited Auto means that
the value given is the minimum measurement range used, with automatic
ranging for larger currents:
1 Full Auto
2 Limited Auto 10 pA
3 Limited Auto 100 pA
4 Limited Auto 1 nA
Return to Section Topics
Model 4200-SCS Reference Manual
4200-901-01 Rev. S / May 2017