User`s manual

Making Multiple Burst Measurements
This program makes multiple burst measurements with a 5 second delay
between bursts. There are three bursts, each consisting of 100 readings,
occurring 1 ms apart.
10 !Dimension a computer array to store the readings.
20 DIM Rdgs(1:300)
30 !
Clear and reset the multimeter.
40 CLEAR 70903
50 OUTPUT 70903;"*RST"
60 !
Configure the multimeter for DC voltage measurements (7.27V range). Set
70 !the aperture time for 100 ms and turn autozero off. Make a total of 3 bursts,
80 !with a 5 second delay between them. Set each burst to 100 readings, with
90 !each reading 1 ms apart. Store the readings in mainframe memory until all
100 !bursts have occurred.
110 OUTPUT 70903;"CONF:VOLT:DC 7.27"
120 OUTPUT 70903;" VOLT:APER 100E-6"
130 OUTPUT 70903;" CAL:ZERO:AUTO OFF"
140 OUTPUT 70903;" TRIG:COUN 3"
150 OUTPUT 70903;" TRIG:DEL 5"
160 OUTPUT 70903;" SAMP:SOUR TIM"
170 OUTPUT 70903;" SAMP:TIM 0.001"
180 OUTPUT 70903;" SAMP:COUN 100"
190 OUTPUT 70903;"INIT"
200 OUTPUT 70903;"FETCH?"
210 !
Enter the readings and display selected measurements.
220 ENTER 70903;Rdgs(*)
230 PRINT Rdgs(100),Rdgs(200),Rdgs(300)
240 END
Comments
• CONFigure sets an aperture time of 16.7 ms or 20 ms depending on
the line frequency. The
VOLTage:APERture command is used to set
aperture times of 10 µs, 100 µs, 2.5 ms, 16.7 ms, 20 ms, 267 ms, and
320 ms. For this program, the 100 µs aperture time is the maximum
that allows the multimeter to sample the readings every 1 ms (see
Chapter 4).
• CONFigure turns autozero on. The command CALibration:ZERO:AUTO
is used to turn it off. Turning autozero off allows the readings in the
burst to occur at more precise, and smaller intervals.
• The trigger count is the number of triggers the multimeter is to
respond to before it returns to an idle state. In this program, the
multimeter responds to three internal triggers.
CONFigure sets the
trigger count to 1. The command
TRIGger:COUNt is used to set up
to 16,777,215 counts.
Chapter 3 Using the HP E1326B/E1411B Multimeter 45