3-26
Agilent 4155B/4156B VXIplug&play Driver User’s Guide, Edition 4
Programming Examples Using HP VEE
Multi-Channel Sweep Measurements
Multi-Channel Sweep Measurements
To make multi-channel sweep measurements, use the following functions.
Table 3-10
Functions for Multi-Channel Sweep Measurements
A program example is shown in Figure 3-22 on page 3-27. This program measures
bipolar transistor Ic, Ib-Vbe characteristics. The example uses the User Object of the
HP VEE. See Figure 3-23 on page 3-28 and Figure 3-24 on page 3-29. The
measurement setup is shown in Figure 3-21.
Figure 3-21
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
Integration Time Setup
hp4156b_setInteg
table,time,average
Forces dc bias
hp4156b_force
channel,mode,range,value,compliance,polarity
Sweep Source Setup
hp4156b_setIv
channel,mode,range,start,stop,point,hold,delay,
s_delay,comp,p_comp
Executes measurement
hp4156b_sweepMiv
channel[ ],mode[ ],range[ ],point,source[ ],
value[ ], status[ ]
Disables output
hp4156b_zeroOutput
channel
A
Collector
Base
Emitter
channel: SMU1
mode: V output
value: 0V
range: 2V
comp: 0.1A
polarity: AUTO
channel: SMU2
mode: V output
value: 0V
range: 2V
comp: 0.1A
polarity: AUTO
channel: SMU3
mode: V output
range: 2V
Start: Vstart
Stop: Vstop
point: MeasPoint
hold: 0sec
delay: 0sec
s_delay: 0sec
comp: 0.1A
p_comp: 1W
channel: SMU1
mode: I measure
value: Ic
range: AUTO
status: IcStatus
A
channel: SMU2
mode: I measure
value: Ib
range: AUTO
status: IbStatus
