Scanning A Switchbox With A Downloaded Scan List - HP E1351A User Manual

Scanning a Switchbox with a Downloaded Scan List

Chapter 3
This example shows a FET switchbox connected to multimeter with the
analog bus cable and the digital bus cable. The switchbox and multimeter
are separate VXIbus instruments. The multimeter has a secondary address
of 03, and the switchbox has a secondary address of 04. The triggering is
through the digital bus handshake lines, so the scan list is downloaded. The
following program illustrates the procedures:
10 DIM Rdgs(1:16)
20 OUTPUT 70903,"*RST,*OPC?"
30 ENTER 70903;A
40 OUTPUT 70903;"*CLS"
50 OUTPUT 70904;"*RST"
60 OUTPUT 70904;"*CLS"
70 OUTPUT 70903;"CONF:VOLT:DC 58.1"!Configure the multimeter
80 OUTPUT 70903;"TRIG:SOUR EXT" !External trigger source
90 OUTPUT 70903;"TRIG:COUN 16"
100 OUTPUT 70903;"INIT"
110 OUTPUT 70904;"STAT:OPER:ENAB 256"
120 OUTPUT 70904;"TRIG:SOUR DBUS"!Digital bus triggers
130 OUTPUT 70904;"SCAN:MODE VOLT"!Configure for voltage
140 OUTPUT 70904;"SCAN:PORT ABUS"!Enables analog bus
150 OUTPUT 70904;"SETT:TIME MAX,(@100)"
160 OUTPUT 70904;"SCAN (@100:131)"!Enter scan list
170 OUTPUT 70904;"INIT"
180 OUTPUT 70903;"FETC?"
190 ENTER 70903;Rdgs(*)
200 PRINT Rdgs(*)
210 END
Using the HP E1351A/53A FET Multiplexer Modules
!Dimension array to store readings
!Clear the multimeter; *OPC?
ensures reset is completed before
program continues
!Reset multiplexer
!Set for 16 triggers
!Initialize multimeter, wait for
trigger
!Enable operation complete bit
!Delay for signal to settle before
multiplexer enables channel closed
pulse
!Close first channel
!Multimeter retrieves readings
from mainframe memory when
scan completes
!Put readings in array
!Print
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