Agilent Technologies B1542A, User Manual

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5- 8 Agilent B1542A User’s Guide, Edition 4
PLSDIV Test Definitions
PLSDIV DC IdVd
• VdStart, VdStop, VdStep
The parameters set the primary sweep source used to apply the drain voltage.
The number of sweep points is given by the following formula. Then ignore the
numbers after the decimal point.
Number of sweep points = (VdStop - VdStart) / 1
• VgStart, VgStop, VgStep
The parameters set the secondary sweep source used to apply the gate voltage.
The number of sweep points is given by the following formula. Then ignore the
numbers after the decimal point.
Number of sweep points = (VgStop
-
VgStart) / 1
• Gate voltage
To apply the specified voltage (Vg) to the gate terminal, the SMU output voltage
(VgSet) will be set to the following value.
VgSet = Vg * (TermR+CableR) / TermR
Extended Test
Parameters The following parameters are available to set the test condition.
IgLimit Gate current compliance, in A. 1 nA to 100 mA, 3 digits or 1 nA
resolution. Set the value that covers current to the terminator.
For example, the current is 100 mA for TermR=50
Ω
with
Vg=5 V.
IntegTime Integration time. SHORT, MEDIUM, or LONG.
HoldTime Hold time, in s. 0 to 655.35. 5 digits or 10 ms resolution.
DelayTime Delay time, in s. 0 to 655.35. 5 digits or 100
μ
s resolution.
DcSwitch Availability of the pulse/dc switch units. Yes (exists, DC IV
measurement connection will be made) or No (none).
SWAddress GPIB address of the 11713A switch controller. Integer, 1 to 32.
Test Output
The following output parameters are displayed after the test.
VgSet Gate voltage, in V. SMU output value.
Vg Gate voltage, in V. Target value at the gate terminal.
Vdrain Drain voltage, in V. SMU output value.
Id Drain current, in A.
IdPerWg Drain current per unit gate width, in A/
μ
m. IdPerWg = Id / Wg