3-34
Agilent 4155B/4156B VXIplug&play Driver User’s Guide, Edition 4
Programming Examples Using HP VEE
Pulsed Sweep Measurements
Pulsed Sweep Measurements
To make pulsed sweep measurements, use the following functions.
Table 3-18
Functions for Pulsed Sweep Measurements
A program example is shown in Figure 3-30 on page 3-35. This program measures
MOSFET Id-Vd characteristics. The measurement setup is shown in Figure 3-29.
Figure 3-29
Device Connection and Source Setup for Example Program
Description
Function
Parameters
Output Switch Setup
hp4156b_setSwitch
channel,state
Output Filter Setup
hp4156b_setFilter
channel,state (pulse channel must be set to OFF)
Integration Time Setup
hp4156b_setInteg
table,time,average
Forces dc bias
hp4156b_force
channel,mode,range,value,compliance,polarity
Sweep Source Setup
hp4156b_setPiv
channel,mode,range,base,start,stop,point,hold,
width,period,compliance
Executes measurement
hp4156b_sweepPiv
channel,mode,range,point,source[ ],value[ ],
status[ ]
Disables output
hp4156b_zeroOutput
channel
A
Drain
Substrate
Gate
Source
channel: SMU2
mode: V pulse
range: 20V
base: 0V
start: VdStart
stop: VdStop
point: MeasPoint
hold: 0sec
width: 10msec
period: 20msec
comp: 0.1A
channel: SMU4
mode: V output
value: Vsub
range: 2V
comp: 0.1A
polarity: AUTO
channel: SMU3
mode: V output
value: Vg
range: 20V
comp: 10mA
polarity: AUTO
channel: SMU1
mode: V output
value: Vs
range: 2V
comp: 0.1A
polarity: AUTO
channel: SMU2
mode: I measure
range: 0.1A
point: MeasPoint
source: Vd
value: Id
status: status
