Scanning A Switchbox Without A Downloaded Scan List - HP E1351A User Manual

Scanning a Switchbox without a Downloaded Scan List

40 Using the HP E1351A/53A FET Multiplexer Modules
This example shows a FET switchbox connected to a multimeter with the
analog 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 multiplexer is triggered by
command.
the *TRG OUTPut ON
triggered by the
OUTPut ON
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;"TRIG:SOUR BUS" !Trigger on *TRG command
120 OUTPUT 70904;"SCAN:MODE VOLT"!Configure for voltage
130 OUTPUT 70904;"SCAN:PORT ABUS"!Enables analog bus
140 OUTPUT 70904;"SCAN (@100:115)"!Enter scan list
150 OUTPUT 70904;"OUTP ON"
160 OUTPUT 70904;"INIT"
170 FOR I = 1 TO 16
180 OUTPUT 70904;"*TRG"
190 WAIT .25
200 NEXT I
210 OUTPUT 70903;"FETC?"
220 ENTER 70903;Rdgs(*)
230 PRINT Rdgs(*)
240 END
is enabled, and the multimeter is
trigger to its "External Trigger" port. The
!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 mainframe trig out port
!Close first channel
!16 channels
!Trigger for channel advance
!Allow time for measurement
before next advance
!Increment counter
!Multimeter retrieves readings
from mainframe memory when
scan completes
!Put readings in array
!Print
Chapter 3