Example Programs
The following is an example program using SCPI compatible
instruments. The example is written in HP BASIC.
This example is a stimulus and response application. It uses a source
and counter to test a voltage controlled oscillator.
Example Program
Description.
This example demonstrates how several SCPI
instruments work together to perform a stimulus/response
measurement. This program measures the linearity of a voltage
controlled oscillator (VCO). A VCO is a device that outputs a
frequency proportional to an input signal level. Figure 1-28 shows
how the hardware is configured.
Unit Under Test
Stimulus
Source
.
v c o
.
Response
Counter
H P - 1 8
HP BASIC
Controller
Figure l-28. Voltage Controlled Oscillator Test
Program Listing.
20
!
30
INTEGER First,Last,Testpoint,Dummy
40
DIM
50
ASSIGN @Stimulus TO 717
60
ASSIGN @Response TO 718
70
!
80
90
Last=100
100 !
110
CLEAR @Stimulus
120
CLEAR @Response
130 !
140
OUTPUT
150
OUTPUT
160 !
170
PRINT "Voltage Controlled Oscillator Test"
180
190 !
200
PRINT "Source Used .
Getting Started Programming 1-77