Download 4 - Excalibur Engineering

Chapter 6 Application Programs
Using the APPLy Command
Using the APPLy Command
This program teaches the following concepts:
œ How to use the APPLy command with low-level commands to set up a
burst. By setting the starting phase to 270 degrees and adding an
offset voltage, a bursted “haversine” waveform is generated.
œ How to set up a trigger source and trigger the function generator over
the GPIB interface.
BASIC / GPIB (Program 1)
10 !
20 ! This program sets up a burst waveform with a 270 degree
30 ! starting phase. By adding an offset voltage to the burst,
40 ! a "haversine" is created. This program also shows the use
50 ! of a trigger received over the GPIB interface to
60 ! initiate a single trigger.
70 !
80
CLEAR 7
! Clear interface - send "device clear"
90
ASSIGN @Fgen TO 710
! Assign I/O path to address 710
100
OUTPUT @Fgen;"*RST"
! Reset the function generator
110 !
120
OUTPUT @Fgen;"OUTP:LOAD 50"
! Output termination is 50 ohms
130
OUTPUT @Fgen;"APPL:SIN 5000,5"
! Carrier is 5 kHz sine @ 5 Vpp
140
OUTPUT @Fgen;"BM:NCYC 1"
! Burst count is 1 cycle
150
OUTPUT @Fgen;"BM:PHAS 270"
! Starting phase is 270 degrees
160
OUTPUT @Fgen;"VOLT:OFFS 2.5"
! Offset voltage is 2.5 Vdc
170
OUTPUT @Fgen;"TRIG:SOUR BUS"
! Trigger source is "bus"
180
OUTPUT @Fgen;"BM:STAT ON"
! Turn burst modulation on
190 !
200 ! Trigger the function generator over the GPIB interface
210 !
220
OUTPUT @Fgen;"*TRG"
! or "TRIGGER 710"
230
END
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