Agilent Technologies 4156C

Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 4 6-39
Programming Examples for VEE Users
Staircase Sweep with Pulsed Bias Measurements
Staircase Sweep with Pulsed Bias Measurements
For staircase sweep with pulsed bias measurements, use the following functions.
Table 6-23 Functions for Staircase Sweep with Pulsed Bias Measurements
A program example is shown in Figure 6-35 on page 6-40. This program measures
bipolar transistor Ic-Vc characteristics. The measurement setup is shown in
Figure 6-34.
Figure 6-34 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
Forces pulse bias hp4156b_setPbias channel,mode,range,base,peak,width,period,
hold,compliance
Sweep Source Setup hp4156b_setIv channel,mode,range,start,stop,point,hold,delay,
s_delay,comp,p_comp
Executes measurement hp4156b_sweepPbias channel,mode,range,point,source[ ],value[ ],
status[ ]
Disables output hp4156b_zeroOutput channel
A
Collector
Base
Emitter
channel: SMU1
mode: V output
range: 20V
start: VcStart
stop: VcStop
point: MeasPoints
hold: 0sec
delay: 0sec
s_delay: 0SEC
comp: 0.1A
p_comp: 1W
channel: SMU2
mode: V pulse
range: 2V
base: 0V
peak: Vb
width: 0.5msec
period: 5msec
hold: 0sec
comp: 50mA
channel: SMU3
mode: V output
range: 2V
value: Ve
comp: 0.1A
polarity: AUTO
channel: SMU1
mode: I measure
value: Ic
range: AUTO